component
CN3303
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ShangHai Consonance Elec DC-DC Controllers, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownCN3303
ShangHai Consonance Elec · DC-DC Controllers · SOP-8
CN3303 from ShangHai Consonance Elec, in a SOP-8. 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 | STAT | output | CMOS charge-status output that is high while charging and low when charging is finished, and can drive an LED or interface with an MCU. |
| 2 | CE | input | Chip-enable input: a high level gives normal operation and a low level disables the device, with input low at or below 0.7 V and input high at or above 2.2 V, and voltages between 0.7 V and 2.2 V must be avoided. |
| 3 | BAT | input | Battery-voltage feedback input connected directly to the battery positive terminal, where the charge-termination threshold is 12.6 V typical. |
| 4 | GND | power_in | Power ground that connects to the negative terminals of the input supply and the battery, and should be routed to system ground separately from the power-stage copper. |
| 5 | LDRV | output | Gate-drive output for the external N-channel power MOSFET, with output current of 0.65 A typical and output high level of VCC-0.3 V minimum. |
| 6 | HDRV | output | Gate-drive output for the external P-channel MOSFET, needed only when low-battery or battery-short protection is required and left floating otherwise, with output current of 0.8 A typical. |
| 7 | VIN | power_in | Positive supply input that powers the internal circuits and is the positive sense input for inductor current; operating range is 2.7 V to 6.5 V and the absolute maximum is 7.0 V. |
| 8 | CSN | input | Inductor-current sense negative input, with the sense resistor connected between VIN and CSN and the normal (VIN-CSN) limits of 125 mV typical upper and 85 mV typical lower. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ShangHai Consonance Elec |
| Package | SOP-8 |
| Category | Power Supply Chip |
| Pins | 8 |
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 voltage range | VIN | 2.7 | 6.5 | V | 5 | ||
| Operating ambient temperature range | -40 | 85 | ℃ | 4 | |||
| VIN, CSN and CE pin voltage | -0.3 | 7 | V | 4 | |||
| BAT pin voltage | -0.3 | 18 | V | 4 | |||
| CSN to VIN pin voltage | -0.3 | 0.3 | V | 4 | |||
| STAT, LDRV and HDRV pin voltage (upper limit printed as VIN) | -0.3 | V | 4 | ||||
| Maximum junction temperature | 150 | ℃ | 4 | ||||
| Storage temperature range | -65 | 150 | ℃ | 4 | |||
| Operating current | IVIN | 200 | 280 | 360 | 微安 | VBAT=12.9V, No Switching | 5 |
| Shutdown current | Ioff | 2 | 微安 | CE pin low level | 5 | ||
| Switching frequency | fSW | 200 | 1000 | KHz | 5 | ||
| Current-sense high threshold, constant current mode | VCSHI | 113 | 123 | 133 | 毫伏 | (VIN-VCSN) rising from 0V until VLDRV<0.5V | 5 |
| Current-sense high threshold, quasi-CV mode | VCSHI | 65 | 75 | 85 | 毫伏 | 5 | |
| Current-sense low threshold, constant current mode | VCSLO | 77 | 87 | 97 | 毫伏 | (VIN-VCSN) falling from 0.2V until VLDRV>(VCC-0.5V) | 5 |
| Current-sense low threshold, quasi-CV mode | VCSLO | 32 | 42 | 52 | 毫伏 | 5 | |
| Charge termination threshold voltage | Vterm | 12.478 | 12.6 | 12.726 | 伏特 | BAT pin voltage rising | 5 |
| Recharge threshold voltage | Vrech | 11.95 | 12.14 | 12.33 | 伏特 | BAT pin voltage falling | 5 |
| BAT pin current | IBAT | 10 | 14 | 18 | 微安 | VBAT=12.6V | 5 |
| Battery overvoltage protection threshold | VOV | 1.044 | 1.0663 | 1.088 | %Vterm | BAT pin voltage rising | 5 |
| Battery overvoltage release threshold | VOVRLS | 1.003 | 1.0249 | 1.047 | %Vterm | BAT pin voltage falling | 5 |
| LDRV output current | 0.65 | 安培 | VCSN=VIN, VDRV=0.5×VCC | 5 | |||
| LDRV pull-down current | 0.65 | 安培 | VCSN=VIN-0.2V, VLDRV=0.5×VCC | 5 | |||
| LDRV output low level voltage | VOL | 0.3 | 伏特 | ILDRV=-5mA | 5 | ||
| HDRV output current | 0.8 | 安培 | VCSN=VIN, VDRV=0.5×VCC | 5 | |||
| HDRV pull-down current | 0.8 | 安培 | VCSN=VIN-0.2V, VHDRV=0.5×VCC | 5 | |||
| HDRV output low level voltage | VOL | 0.3 | 伏特 | IHDRV=-5mA | 5 | ||
| CE input low level voltage | VCEL | 0.7 | V | CE voltage falling | 5 | ||
| CE input high level voltage | VCEH | 2.2 | V | CE voltage rising | 5 | ||
| CE input current (low) | ICEL | -1 | 微安 | CE=GND, VIN=6V | 5 | ||
| CE input current (high) | ICEH | 1 | 微安 | CE=VIN=6V | 5 | ||
| STAT pull-down current | ISINK | 10 | mA | VSTAT=0.3V, end mode | 5 | ||
| STAT output (source) current | ISRC | 10 | mA | VSTAT=4.7V, charge mode | 5 | ||
| CSN pin input current | ICSN | 1 | 微安 | 5 | |||
| Output high-level propagation delay | tDPDH | 72 | 纳秒 | (VIN-VCSN): 0.15V to 0.075V | 5 | ||
| Output low-level propagation delay | tDPDL | 66 | 纳秒 | (VIN-VCSN): 0.06V to 0.135V | 5 |
CAD (KiCad official)
- Symbol:
CN3303 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
cn3303-etched.step/cn3303-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cn3303.step/cn3303.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ShangHai Consonance Elec datasheet (13 pp, sha256
c222bff8175062f1, retrieved 2026-10-21, 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, primaryclaude-haiku-5-5(text), consensusclaude-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).