# CN3387

**ShangHai Consonance Elec** · DC-DC Converters · SSOP-10

CN3387 from ShangHai Consonance Elec, in a SSOP-10. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | STAT | output | Charge status indicator output (CMOS). Drives high while charging and low when charging has terminated. Can sink/source approximately 10 mA to drive a status LED directly or interface to an MCU input. |
| 2 | CE | input | Chip enable input. A high level (>=2.2V) puts CN3387 in normal operation; a low level (<0.7V) disables the chip. Compatible with TTL and CMOS logic levels; do not leave in the 0.7V-2.2V undefined region. |
| 3 | FB | input | Battery voltage feedback input. Connects to an external resistor divider (R1/R2) to sense battery voltage per VBAT = VFB x (1 + R1/R2). Constant-current termination threshold Vcct = 1.125V typ; over-voltage / peak threshold 1.205V typ; recharge threshold 1.105V typ. |
| 4 | BAT | input | Battery positive-terminal sense input. Connects directly to the battery pack positive terminal for over-voltage protection (Vov = 1.285V typ threshold referred internally). Draws ~5.8 uA typical at VBAT = 12V. |
| 5 | GND | power_in | Device ground and return for both the input supply and the battery negative terminal. |
| 6 | LDRV | output | External low-side N-channel power MOSFET gate driver output. Sources/sinks up to ~0.65 A peak to switch the boost inductor low-side FET; VOH >= VCC-0.3V at 5 mA, VOL <= 0.3V at -5 mA. |
| 7 | HDRV | output | External high-side P-channel power MOSFET gate driver output for battery-short / low-battery protection topology (Figure 2). Sources/sinks up to ~0.8 A peak; VOH >= VCC-0.3V at 5 mA, VOL <= 0.3V at -5 mA. Leave unconnected when the external PMOS is not used (Figure 1 topology). |
| 8 | VIN | power_in | Positive supply input for the internal circuitry (2.7V to 6.5V) and also the positive input for the inductor current sense comparator. Quiescent current 300 uA typ (no switching); shutdown current 0 uA typ when CE is low. |
| 9 | CSN | input | Negative input of the inductor (input) current sense comparator. An external sense resistor Rcs is placed between VIN and CSN. In constant-current mode the upper (VIN-CSN) threshold is 125 mV typ and the lower threshold is 85 mV typ. |
| 10 | CT | passive | Timing-capacitor connection. A capacitor C2 (>1 nF) from CT to GND sets the maintenance-charge timeout per T(s) = 12.18e9 x C2. Timer starts when CN3387 enters top-off/maintenance mode and terminates charging on expiry. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ShangHai Consonance Elec |
| Package | SSOP-10 |
| Category | PMIC |
| Pins | 10 |

## Ordering variants

Same part, different packaging or reel option.

- `CN3387`

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 输入电压范围 | VIN | 2.7 |  | 6.5 | 伏特 |  | 5 |
| 工作温度范围 | TA | -40 |  | 85 | ℃ |  | 4 |
| 工作电流 | IVIN | 230 | 300 | 370 | 微安 | VFB＝1.5V，No Switching | 5 |
| 关断电流 | Ioff | 0 |  | 2 | 微安 | CE管脚低电平 | 5 |
| 开关频率 | fSW | 200 |  | 1000 | KHz |  | 5 |
| 检测电压高端阈值 恒流 | VCSHI | 113 | 123 | 133 | 毫伏 | 恒流 (VIN－VCSN) 从0V上升，直到VLDRV＜0.5V | 5 |
| 检测电压高端阈值 维持充电 | VCSHI | 62 | 72 | 82 | 毫伏 | 维持充电 | 5 |
| 检测电压低端阈值 恒流 | VCSLO | 77 | 87 | 97 | 毫伏 | 恒流 (VIN－VCSN) 从0.2V下降，直到VLDRV＞(VCC－0.5V) | 5 |
| 检测电压低端阈值 维持充电 | VCSLO | 35 | 45 | 55 | 毫伏 | 维持充电 | 5 |
| 输出高电平传输延时 | tDPDH |  | 72 |  | 纳秒 | (VIN－VCSN)：0.15V到0.075V | 5 |
| 输出低电平传输延时 | tDPDL |  | 66 |  | 纳秒 | (VIN－VCSN)：0.06V到0.135V | 5 |
| CSN管脚输入电流 | ICSN |  |  | 100 | 纳安 |  | 5 |
| FB管脚最高电压 | Vhigh | 1.193 | 1.205 | 1.217 | 伏特 | FB管脚电压上升 | 5 |
| FB恒流充电终止电压 | VCCT | 1.1 | 1.125 | 1.15 | 伏特 | FB管脚电压上升 | 5 |
| FB管脚再充电阈值 | Vrech | 1.08 | 1.105 | 1.13 | 伏特 | FB管脚电压下降 | 5 |
| FB管脚电流 | IFB | 0 |  | 100 | 纳安 | VFB＝5.5V | 5 |
| 过压保护阈值 | VOV | 1.255 | 1.285 | 1.315 | 伏特 | BAT管脚电压上升 | 5 |
| 过压释放阈值 | VOVRLS | 1.205 | 1.235 | 1.265 | 伏特 | BAT管脚电压下降 | 5 |
| BAT管脚流入电流 | IBAT | 4.6 | 5.8 | 7 | 微安 | VBAT＝12V | 5 |
| LDRV管脚输出电流 |  | 0.65 |  |  | 安培 | VCSN＝VIN, VDRV＝0.5×VCC | 5 |
| LDRV管脚下拉电流 |  | 0.65 |  |  | 安培 | VCSN＝VIN－0.2V，VLDRV＝0.5×VCC | 5 |
| LDRV输出低电平 | VOL |  |  | 0.3 | 伏特 | ILDRV＝－5mA | 5 |
| HDRV管脚输出电流 |  | 0.8 |  |  | 安培 | VCSN＝VIN, VDRV＝0.5×VCC | 5 |
| HDRV管脚下拉电流 |  | 0.8 |  |  | 安培 | VCSN＝VIN－0.2V，VHDRV＝0.5×VCC | 5 |
| HDRV输出低电平 | VOL |  |  | 0.3 | 伏特 | IHDRV＝－5mA | 5 |
| CE输入低电平 | VCEL |  |  | 0.7 | 伏特 | CE电压下降 | 6 |
| CE输入高电平 | VCEH | 2.2 |  |  | 伏特 | CE电压上升 | 6 |
| CE输入电流 ICEL | ICEL | -1 |  |  | 微安 | CE=GND，VIN=6V | 6 |
| CE输入电流 ICEH | ICEH |  |  | 1 | 微安 | CE=VIN=6V | 6 |
| STAT管脚下拉电流 | ISINK | 10 |  |  | 毫安 | VSTAT=0.3V，结束模式 | 6 |
| STAT管脚输出电流 | ISRC | 10 |  |  | 毫安 | VSTAT=4.7V，充电模式 | 6 |
| VIN、CSN、CE管脚电压 | VIN, CSN, CE | -0.3 |  | 6.5 | V |  | 4 |
| BAT管脚电压 | VBAT | -0.3 |  | 18 | V |  | 4 |
| CSN与VIN管脚电压 |  | -0.3 |  | 0.3 | V |  | 4 |
| STAT、LDRV和HDRV管脚电压 |  | -0.3 |  |  | V |  | 4 |
| FB和CT管脚电压 |  | -0.3 |  |  | V |  | 4 |
| 最大结温 |  |  |  | 150 | ℃ |  | 4 |
| 存储温度 |  | -65 |  | 150 | ℃ |  | 4 |

## CAD (KiCad official)

- Symbol: `CN3387`
- Footprint: `Package_SO:SSOP-10_3.9x4.9mm_P1.00mm`
- 3D model: SSOP-10 (KiCad packages3D, STEP)
- 3D model files: `cn3387-etched.step` / `cn3387-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cn3387.step` / `cn3387.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ShangHai Consonance Elec datasheet](docs/cn3387-datasheet.pdf) (13 pp, sha256 `f6116a5972c222f1`, retrieved 2026-08-17, 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:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/cn3387-datasheet.pdf)