# CN3162

**ShangHai Consonance Elec** · Battery Management ICs · SOP-8-EP

CN3162 from ShangHai Consonance Elec, in a SOP-8-EP. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | TEMP | input | Battery NTC temperature input: charging is suspended when TEMP is below 45% or above 80% of VIN, and tying TEMP to GND disables temperature monitoring. |
| 2 | ISET | passive | Constant-charge-current programming pin: an external resistor to GND sets the current via ICH = 1218V/RISET, with 0.12V in precharge and 1.205V in constant-current mode. |
| 3 | GND | power_in | Ground reference for the charger circuit. |
| 4 | VIN | power_in | Positive input supply for the internal circuitry, specified at 3.8V to 6V; the charger enters sleep mode when VIN is within 10mV of BAT. |
| 5 | BAT | power_out | Battery connection that supplies charge current and the constant-voltage charge voltage (4.2V nominal, ±1%); BAT leakage is below 3µA in sleep or under-voltage lockout. |
| 6 | DONE | output | Open-drain charge-complete indicator that is pulled low at end of charge and is high-impedance otherwise, with 10mA pull-down capability. |
| 7 | CHRG | output | Open-drain charge-status indicator that is pulled low while the charger is charging and is high-impedance otherwise, with 10mA pull-down capability. |
| 8 | FB | input | Battery-voltage Kelvin sense input that regulates the constant-voltage charge level; a resistor between FB and BAT raises the regulated voltage. |
| 9 | EP | power_in | Exposed thermal pad that must be connected to ground and soldered to the PCB ground copper for maximum heat dissipation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ShangHai Consonance Elec |
| Package | SOP-8-EP |
| Category | Power Management ICs |
| Pins | 9 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input supply voltage | VIN | 3.8 |  | 6 | V |  | 5 |
| Operating current | IVIN | 300 | 450 | 600 | µA | BAT端无负载 | 5 |
| Undervoltage lockout threshold | Vuvlo | 3.2 |  | 3.8 | V | VIN上升 | 5 |
| Constant-voltage charge voltage | VREG | 4.158 | 4.2 | 4.242 | V | FB端连接到BAT端 | 5 |
| Battery terminal current, constant-current mode | IBAT | 850 | 1000 | 1150 | mA | RISET=1.22K, 恒流充电模式 | 5 |
| Battery terminal current, precharge | IBAT | 75 | 100 | 125 | mA | RISET=1.22K, VBAT＝2.4V | 5 |
| Battery terminal current, sleep mode | IBAT |  |  | 3 | µA | VIN=0V, 睡眠模式 | 5 |
| Precharge threshold | VPRE | 2.83 | 2.93 | 3.03 | V | FB管脚电压上升 | 5 |
| Precharge threshold hysteresis | HPRE |  | 0.24 |  | V |  | 5 |
| Termination threshold | Vterm | 0.096 | 0.12 | 0.144 | V | 测量ISET管脚的电压 | 5 |
| Sleep mode threshold | VSLP |  | 10 |  | mV | VIN下降, 测量电压差(VIN－VBAT) | 5 |
| Sleep mode exit threshold | VSLPR |  | 60 |  | mV | VIN上升, 测量电压差(VIN－VBAT) | 5 |
| TEMP high threshold | VHIGH | 77.5 | 80 | 82.5 | %VIN | TEMP管脚电压上升 | 5 |
| TEMP low threshold | VLOW | 42.5 | 45 | 47.5 | %VIN | TEMP管脚电压下降 | 5 |
| TEMP input current |  |  | 0.5 |  | µA | TEMP到VIN或到地端的电流 | 5 |
| ISET pin voltage, precharge | VISET |  | 0.12 |  | V | VBAT<2.93V，预充电模式 | 5 |
| ISET pin voltage, constant-current | VISET |  | 1.205 |  | V | 恒流充电模式 | 5 |
| FB input current 1 | IFB1 | 1.3 | 2.5 | 5 | µA | VFB=3.6V，正常充电状态 | 5 |
| FB input current 2 | IFB2 |  | 1 |  | µA | VIN<Vuvlo或VIN<VBAT | 5 |
| CHRG pull-down current | ICHRG |  | 10 |  | mA | VCHRG=0.3V，充电状态 | 5 |
| CHRG leakage current | ICHRG |  | 1 |  | µA | VCHRG=6V，充电结束状态 | 5 |
| DONE pull-down current | IDONE |  | 10 |  | mA | VDONE=0.3V，充电结束状态 | 5 |
| DONE leakage current | IDONE |  | 1 |  | µA | VDONE=6V，充电状态 | 5 |
| Pin voltage |  | -0.3 |  | 6.5 | V | 管脚电压 | 4 |
| Maximum junction temperature |  |  |  | 150 | ℃ | 最高结温 | 4 |
| Operating temperature |  | -40 |  | 85 | ℃ | 工作温度 | 4 |
| Storage temperature |  | -65 |  | 150 | ℃ | 存储温度 | 4 |
| ESD HBM |  |  | 2 |  | kV | 静电放电(HBM) | 4 |

## CAD (KiCad official)

- Symbol: `CN3162`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm`
- 3D model: SOP-8-EP (KiCad packages3D, STEP)
- 3D model files: `cn3162-etched.step` / `cn3162-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cn3162.step` / `cn3162.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [ShangHai Consonance Elec datasheet](docs/cn3162-datasheet.pdf) (11 pp, sha256 `3182dba4e80ed9d6`, retrieved 2026-10-28, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/cn3162-datasheet.pdf)