CN206524658U - Portable power source pin multiplexing circuit - Google Patents
Portable power source pin multiplexing circuit Download PDFInfo
- Publication number
- CN206524658U CN206524658U CN201720235278.6U CN201720235278U CN206524658U CN 206524658 U CN206524658 U CN 206524658U CN 201720235278 U CN201720235278 U CN 201720235278U CN 206524658 U CN206524658 U CN 206524658U
- Authority
- CN
- China
- Prior art keywords
- input
- power source
- portable power
- battery capacity
- capacity indication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of portable power source pin multiplexing circuit, external equipment includes LED battery capacity indication lamps and adjustable resistance, the portable power source pin multiplexing circuit is mainly integrated with LED battery capacity indication lamps drive module, functional parameter detection module, enables switch and voltage comparator, the input of LED battery capacity indication lamp drive modules is electrically connected to dc source, after the output end of LED battery capacity indication lamp drive modules is connected with the first end of functional parameter detection module, the input/output terminal pin KEY of the portable power source pin multiplexing circuit is formed；Enable switch can switch on and off constant current and come from input/output terminal pin KEY, and the input in the same direction of voltage comparator is electrically connected to the input/output terminal pin KEY, and the incorgruous input of voltage comparator connects default reference voltage signal；LED battery capacity indication lamps drive module and functional parameter detection module share an input/output terminal pin KEY in the utility model, effectively reduce portable power source managing chip IC cost.
Description
Technical field
The utility model is related to electronic circuit technology field, specifically provides a kind of portable power source function selection pin and electricity
The multiplex circuit of light pin multiplexing.
Background technology
In recent years, with the fast development of smart mobile phone, portable power source industry is also rapidly popularized, corresponding portable power source
Function is also increasingly enriched, and corresponding specifications parameter is also more and more.For the specification demands of compatible different clients, it is required to make use of momentum
The more pins of portable power source IC are wanted to realize the selection of different size parameter, so as to add portable power source IC cost.Ginseng
Read shown in accompanying drawing 1, it is that existing portable power source function selects pin circuitry figure, and working method is：By electricity inside portable power source IC
Pressure is divided into several intervals, and every kind of interval corresponds to a kind of specifications parameter, and compares the voltage of pin by internal comparator, to sentence
Which kind of specifications parameter is disconnected customer selecting be；And client can select required specification by the divider resistance outside regulation.But
Existing portable power source function selection pin circuitry certainly will need multiple pins to select different specifications parameters, so as to add shifting
Dynamic power supply IC pin and cost.
In view of this, it is special to propose the utility model.
The content of the invention
In order to overcome drawbacks described above, the utility model provides a kind of portable power source pin multiplexing circuit, can realize and draw
Pin is multiplexed, and significantly reduces portable power source managing chip IC cost.
The utility model is to solve the technical scheme that its technical problem is used：A kind of portable power source pin multiplexing electricity
Road, external equipment includes LED battery capacity indication lamps and adjustable resistance, and the portable power source pin multiplexing circuit is mainly integrated with one and is used to
Control the LED battery capacity indication lamps drive module of LED battery capacity indication lamps work, one to portable power source system operating mode
Functional parameter detection module, an enable switch and the voltage comparator for being detected and being judged, wherein, the LED electricity
The input of indicator lamp drive module is electrically connected to dc source, the output end of the LED battery capacity indication lamps drive module and institute
State functional parameter detection module first end be connected after, the input/output terminal for forming the portable power source pin multiplexing circuit is drawn
Pin KEY, and the second end ground connection of the functional parameter detection module；The enable switch can switch on and off constant current and come from institute
Input/output terminal pin KEY is stated, the input in the same direction of the voltage comparator is electrically connected to the input/output terminal pin
KEY, and the incorgruous input of the voltage comparator connects default reference voltage signal.
It is used as further improvement of the utility model, the positive pole of the LED battery capacity indication lamps and the of the adjustable resistance
One end is connected in parallel in the input/output terminal pin KEY, the negative poles of the LED battery capacity indication lamps and the adjustable resistance
Second end is grounded.
As further improvement of the utility model, the magnitude of voltage of the constant-current source is less than the LED battery capacity indication lamps
Operational voltage value.
The beneficial effects of the utility model are：Compared to prior art, LED battery capacity indication lamps described in the utility model drives
Dynamic model block EN1 and functional parameter detection module EN2 shares an input/output terminal pin KEY, significantly reduces portable power source
Managing chip IC cost.
Brief description of the drawings
Fig. 1 is that existing portable power source function selects pin circuitry figure；
Fig. 2 is the circuit diagram of portable power source pin multiplexing circuit described in the utility model；
Fig. 3 is the timing diagram of portable power source pin multiplexing circuit described in the utility model.
Embodiment
Illustrate embodiment of the present utility model by particular specific embodiment below, people skilled in the art can be by
Content disclosed in the present specification understands other advantages of the present utility model and effect easily.
Embodiment 1：
Refering to shown in accompanying drawing 2, it is the circuit diagram of portable power source pin multiplexing circuit described in the utility model.External equipment
Including LED battery capacity indication lamps and adjustable resistance R, it is described to control that the portable power source pin multiplexing circuit is mainly integrated with one
The LED battery capacity indication lamp drive modules EN1 of LED battery capacity indication lamps work, one to portable power source system operating mode to carry out
Detection and the functional parameter detection module EN2 judged, an enable switch EN3 and a voltage comparator, wherein, the LED electricity
Amount instruction lamp drive module EN1 input is electrically connected to dc source BAT, the LED battery capacity indication lamps drive module EN1's
After output end is connected with the first end (sensing end) of the functional parameter detection module EN2, the portable power source pin is formed
The input/output terminal pin KEY of multiplex circuit, and the second end ground connection of the functional parameter detection module EN2；The enable is opened
Pass EN3 can switch on and off constant current and come from the input/output terminal pin KEY, the input in the same direction of the voltage comparator
The input/output terminal pin KEY is electrically connected to, and the incorgruous input of the voltage comparator connects default reference voltage
Signal.
In the present embodiment, the positive pole of the LED battery capacity indication lamps and the adjustable resistance R first end are connected in parallel in
The input/output terminal pin KEY, the negative pole of the LED battery capacity indication lamps and the adjustable resistance R the second end are grounded.
In the present embodiment, the magnitude of voltage of the constant-current source is less than the operational voltage value of the LED battery capacity indication lamps.
The operation principle also to portable power source pin multiplexing circuit described in the utility model is described in detail below.
Embodiment 2：
Refering to shown in accompanying drawing 3, it is the timing diagram of portable power source pin multiplexing circuit described in the utility model.Movement electricity
The operation principle of source pin multiplex circuit is：1) the t1 periods be portable power source managing chip IC start shooting after system start when
Between, within the t1 periods, portable power source managing chip IC controls the functional parameter detection module EN2 to start, to described defeated
Enter/output pin KEY state detected and judged, i.e.,：If being judged as high level, show that external equipment is abnormal, it is mobile
Power management chip IC controls the LED battery capacity indication lamps drive module EN1 and enable switch EN3 to be in off working state；
And if be judged as low level, show that external equipment is normal, portable power source managing chip IC will be corresponding according to setting program
To control the LED battery capacity indication lamps drive module EN1 and enable switch EN3 work.
2) in the t2 periods, portable power source managing chip IC controls the LED battery capacity indication lamps drive module EN1 and described
Functional parameter detection module EN2 is turned off and controlled the switch EN3 that enables to start, and the electric current of the constant-current source is just through institute
Input/output terminal pin KEY is stated to export to the adjustable resistance R (because the magnitude of voltage of the constant-current source is less than the LED electricity
The operational voltage value of indicator lamp, therefore the constant-current source will not be diverted in LED battery capacity indication lamps), now, can be by adjusting
Adjustable resistance R resistance size is stated, to adjust the magnitude of voltage of the input/output terminal pin KEY；And then pass through the voltage again
Comparator is acquired come the magnitude of voltage to the input/output terminal pin KEY, comparative analysis, the rule that the system of drawing is locked
Lattice parameter.
3) in the t3 periods, portable power source managing chip IC controls the LED battery capacity indication lamps drive module EN1 to start,
The LED battery capacity indication lamps conducting is shinny, carries out electricity and shows, until system closedown.
In summary, the utility model is innovated by circuit, by the LED battery capacity indication lamps drive module EN1 and function
Parameter detection module EN2 shares an input/output terminal pin KEY, significantly reduce portable power source managing chip IC into
This.
Described above is only preferred embodiment of the present utility model, but is not limited to the utility model, should be referred to
Go out, for those skilled in the art, can be with the premise of the utility model technical principle is not departed from
Some improvement and modification are made, these improvement and modification also should be regarded as in protection domain of the present utility model.
Claims (3)
1. a kind of portable power source pin multiplexing circuit, external equipment includes LED battery capacity indication lamps and adjustable resistance (R), its feature
It is：The portable power source pin multiplexing circuit is mainly integrated with a LED electricity to control the LED battery capacity indication lamps work
Indicator lamp drive module (EN1), a functional parameter detection portable power source system operating mode is detected and judged
Module (EN2), one enable switch (EN3) and a voltage comparator, wherein, the LED battery capacity indication lamps drive module
(EN1) input is electrically connected to dc source (BAT), the output end of the LED battery capacity indication lamps drive module (EN1) and institute
State functional parameter detection module (EN2) first end be connected after, form the input/output of the portable power source pin multiplexing circuit
Hold pin KEY, and the second end ground connection of the functional parameter detection module (EN2)；It is described enable switch (EN3) can connect and
Disconnect constant current and come from the input/output terminal pin KEY, the input in the same direction of the voltage comparator is electrically connected to described defeated
Enter/output pin KEY, and the incorgruous input of the voltage comparator connects default reference voltage signal.
2. portable power source pin multiplexing circuit according to claim 1, it is characterised in that：The LED battery capacity indication lamps
The first end of positive pole and the adjustable resistance (R) is connected in parallel in the input/output terminal pin KEY, the LED battery capacity indications
Second end of the negative pole of lamp and the adjustable resistance (R) is grounded.
3. portable power source pin multiplexing circuit according to claim 1, it is characterised in that：The magnitude of voltage of the constant-current source is small
In the operational voltage value of the LED battery capacity indication lamps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720235278.6U CN206524658U (en) | 2017-03-10 | 2017-03-10 | Portable power source pin multiplexing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720235278.6U CN206524658U (en) | 2017-03-10 | 2017-03-10 | Portable power source pin multiplexing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206524658U true CN206524658U (en) | 2017-09-26 |
Family
ID=59902784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720235278.6U Active CN206524658U (en) | 2017-03-10 | 2017-03-10 | Portable power source pin multiplexing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206524658U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110071556A (en) * | 2019-06-04 | 2019-07-30 | 南京矽力杰半导体技术有限公司 | Battery capacity indication circuit and indicating means |
| CN110662325A (en) * | 2018-06-29 | 2020-01-07 | 广东金莱特电器股份有限公司 | Display and detection common scanning type control circuit |
| CN111225472A (en) * | 2020-01-20 | 2020-06-02 | 珠海智融科技有限公司 | Temperature detection and LED drive pin multiplexing circuit, power supply chip and working method of pin multiplexing circuit |
| CN114336813A (en) * | 2020-09-30 | 2022-04-12 | 深圳英集芯科技股份有限公司 | Charging control circuit, charging chip and charging equipment |
-
2017
- 2017-03-10 CN CN201720235278.6U patent/CN206524658U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110662325A (en) * | 2018-06-29 | 2020-01-07 | 广东金莱特电器股份有限公司 | Display and detection common scanning type control circuit |
| CN110071556A (en) * | 2019-06-04 | 2019-07-30 | 南京矽力杰半导体技术有限公司 | Battery capacity indication circuit and indicating means |
| CN110071556B (en) * | 2019-06-04 | 2021-06-22 | 南京矽力微电子技术有限公司 | Electric quantity indicating circuit and indicating method |
| CN111225472A (en) * | 2020-01-20 | 2020-06-02 | 珠海智融科技有限公司 | Temperature detection and LED drive pin multiplexing circuit, power supply chip and working method of pin multiplexing circuit |
| CN111225472B (en) * | 2020-01-20 | 2021-01-05 | 珠海智融科技有限公司 | Temperature detection and LED drive pin multiplexing circuit, power supply chip and working method of pin multiplexing circuit |
| CN114336813A (en) * | 2020-09-30 | 2022-04-12 | 深圳英集芯科技股份有限公司 | Charging control circuit, charging chip and charging equipment |
| CN114336813B (en) * | 2020-09-30 | 2023-06-20 | 深圳英集芯科技股份有限公司 | Charging control circuit, charging chip and charging equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206524658U (en) | Portable power source pin multiplexing circuit | |
| CN105162228A (en) | Intelligent charger and charging control circuit thereof | |
| CN104345867B (en) | Field device | |
| CN104007392B (en) | Battery electric quantity detecting and displaying method | |
| CN202533789U (en) | Field device used in industrial process control system | |
| CN110870158A (en) | Charging detection method, charger and storage medium | |
| CN104319564A (en) | Lightning charging data line capable of displaying charging state | |
| CN107147318B (en) | A kind of parallel operation system output power balance control system | |
| CN103546114B (en) | Circuit according to pull-up voltage in the pull-up Voltage Cortrol bus of equipment and method thereof | |
| WO2016074388A1 (en) | Charging method and apparatus | |
| CN203444378U (en) | Output voltage regulation self-adaptive load circuit | |
| CN104159359A (en) | Electric torch drive circuit and mobile terminal | |
| CN209298922U (en) | A kind of charging circuit and charging system | |
| CN204559954U (en) | Automobile room lamp | |
| CN209642338U (en) | Mobile power source circuit and mobile power source | |
| CN106329482A (en) | Power management circuit and power management method | |
| CN103108081A (en) | Subscriber identity module (SIM) card detection control device of mobile terminal | |
| CN104656724B (en) | Electronic installation | |
| CN203378106U (en) | LED emergency illuminating device | |
| CN103491250B (en) | The method to set up of mobile terminal and flashlight module drive current thereof | |
| CN205004816U (en) | Intelligent charging ware and control circuit charges thereof | |
| CN106655375A (en) | Wireless sensor power management system and method based on multi-stage and multi-path control | |
| CN211318588U (en) | Intelligent electric energy meter with low-frequency load shedding function | |
| CN103107591B (en) | A kind of electric supply installation of portable digital equipment and method | |
| CN203241994U (en) | Hot-plug control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 3104, block a, building 8, Shenzhen International Innovation Valley, Dashi 1st Road, Xili community, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: Shenzhen yingjixin Technology Co.,Ltd. Address before: 518000 Room 101, 5 / F, Dongfang Science and technology building, No. 16, Keyuan Road, Yuehai street, Nanshan District, Shenzhen, Guangdong Province Patentee before: SHENZHEN INJOINIC TECHNOLOGY Co.,Ltd. |