# CN1185

**ShangHai Consonance Elec** · Supervisor and Reset ICs · TSSOP-16

CN1185 from ShangHai Consonance Elec, in a TSSOP-16. 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 | IN1 | input | Comparator 1 negative input. Connect directly to the monitored voltage or via an external resistor divider to set the trip threshold. Typical trip threshold 1.22V or 1.256V depending on CHRG. |
| 2 | OUT1 | output | Comparator 1 open-drain output. Pulls low (internal NMOS to GND) when IN1 rises above the upper trip threshold; goes high-impedance when IN1 falls below the lower trip threshold. Pull-down current ≥10mA at OUTx=0.3V. |
| 3 | IN2 | input | Comparator 2 negative input. Connect directly to the monitored voltage or via an external resistor divider to set the trip threshold. |
| 4 | OUT2 | output | Comparator 2 open-drain output. Pulls low when IN2 rises above the upper trip threshold; high-impedance when IN2 falls below the lower trip threshold. |
| 5 | IN3 | input | Comparator 3 negative input. Connect directly to the monitored voltage or via an external resistor divider to set the trip threshold. |
| 6 | OUT3 | output | Comparator 3 open-drain output. Pulls low when IN3 rises above the upper trip threshold; high-impedance when IN3 falls below the lower trip threshold. |
| 7 | IN4 | input | Comparator 4 negative input. Connect directly to the monitored voltage or via an external resistor divider to set the trip threshold. |
| 8 | OUT4 | output | Comparator 4 open-drain output. Pulls low when IN4 rises above the upper trip threshold; high-impedance when IN4 falls below the lower trip threshold. |
| 9 | CHRG | input | Comparator trip-threshold control logic input. High: falling trip threshold typ 1.22V. Low: falling trip threshold typ 1.256V (≈3% higher, for charge-state compensation). Affects all four comparators simultaneously. |
| 10 | NC | unconnected | No connection. |
| 11 | HYS1 | input | Comparator hysteresis setting logic input (LSB). Together with HYS2 selects hysteresis of 1%, 3%, 6%, or 10% of the falling trip threshold. VIL≤0.6V, VIH≥0.7×VDD. |
| 12 | HYS2 | input | Comparator hysteresis setting logic input (MSB). Together with HYS1 selects hysteresis of 1%, 3%, 6%, or 10% of the falling trip threshold. VIL≤0.6V, VIH≥0.7×VDD. |
| 13 | GND | power_in | Negative supply / ground reference. |
| 14 | BLINK | input | Blink control logic input. When a comparator output is low, CHRG=low, and BLINK=high, that output toggles at ~2Hz (50% duty, ~500ms per state) - used to indicate charging in progress via the LED indicator. |
| 15 | NC | unconnected | No connection. |
| 16 | VDD | power_in | Positive supply input, 2.7V to 6V operating range (absolute max 6.5V). Typical supply current 7.3µA at VDD=3.7V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ShangHai Consonance Elec |
| Package | TSSOP-16 |
| Category | PMIC |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `CN1185`
- Footprint: `Package_SO:TSSOP-16_4.4x5mm_P0.65mm`
- 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files: `cn1185-etched.step` / `cn1185-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cn1185.step` / `cn1185.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ShangHai Consonance Elec datasheet](docs/cn1185-datasheet.pdf) (10 pp, sha256 `aeec55518128be10`, 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/cn1185-datasheet.pdf)