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CN3304
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ShangHai Consonance Elec DC-DC Converters, 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
markdownCN3304
ShangHai Consonance Elec · DC-DC Converters · SOP-8
CN3304 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 at end-of-charge; it can drive an LED or an MCU input, and its voltage is limited to -0.3 V to VIN. |
| 2 | CE | input | Chip enable input: above 2.2 V the device operates normally and below 0.7 V it is disabled, and 0.7 V to 2.2 V must not be applied because it leaves the chip in an undefined state with high current draw; CE is rated -0.3 V to 7.0 V. |
| 3 | BAT | input | Battery voltage feedback input connected directly to the battery positive terminal for battery voltage sensing; BAT is rated -0.3 V to 18 V. |
| 4 | GND | power_in | Power ground, serving as the return for the input supply and the battery negative terminal, to be routed separately from the power ground copper per the PCB guidance. |
| 5 | LDRV | output | Gate drive output for the external N-channel power MOSFET, with a 0.65 A drive/pull-down current rating and voltage limited to -0.3 V to VIN. |
| 6 | HDRV | output | Gate drive output for the external P-channel MOSFET used only when low-battery or battery-short protection is needed; leave floating if that protection is not used, and voltage is limited to -0.3 V to VIN. |
| 7 | VIN | power_in | Positive supply input (2.7 V to 6.5 V operating range) that powers the internal circuits and is the positive sense input for inductor current detection; rated -0.3 V to 7.0 V. |
| 8 | CSN | input | Negative sense input for the inductor-current sense resistor RCS placed between VIN and CSN; the normal (VIN−CSN) sense window is 85 mV (typ) to 125 mV (typ), and CSN/VIN voltage is rated -0.3 V to 0.3 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ShangHai Consonance Elec |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| 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 | 伏特 | 5 | ||
| Operating current | IVIN | 200 | 280 | 360 | 微安 | VBAT＝17.2V, No Switching | 5 |
| Shutdown current | Ioff | 0 | 2 | 微安 | CE管脚低电平 | 5 | |
| Switching frequency | fSW | 200 | 1000 | KHz | 5 | ||
| Inductor current sense high threshold, constant current mode | VCSHI | 113 | 123 | 133 | 毫伏 | 恒流 (VIN－VCSN) 从0V上升，直到 VLDRV＜0.5V | 5 |
| Inductor current sense high threshold, quasi-CV mode | VCSHI | 65 | 75 | 85 | 毫伏 | 准恒压 | 5 |
| Inductor current sense low threshold, constant current mode | VCSLO | 77 | 87 | 97 | 毫伏 | 恒流 (VIN－VCSN) 从0.2V下降，直到 VLDRV＞(VCC－0.5V) | 5 |
| Inductor current sense low threshold, quasi-CV mode | VCSLO | 32 | 42 | 52 | 毫伏 | 准恒压 | 5 |
| BAT charge termination threshold | Vterm | 16.639 | 16.8 | 16.968 | 伏特 | BAT管脚电压上升 | 5 |
| BAT recharge threshold | Vrech | 15.94 | 16.19 | 16.44 | 伏特 | BAT管脚电压下降 | 5 |
| BAT pin current | IBAT | 13 | 18 | 23 | 微安 | VBAT＝16.8V | 5 |
| Battery overvoltage protection threshold | VOV | 1.044 | 1.0663 | 1.088 | %Vterm | BAT管脚电压上升 | 5 |
| Battery overvoltage release threshold | VOVRLS | 1.003 | 1.0249 | 1.047 | %Vterm | BAT管脚电压下降 | 5 |
| Input voltage range pin voltage (VIN, CSN, CE) | -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 | -0.3 | V | 4 | ||||
| Maximum junction temperature | 150 | ℃ | 4 | ||||
| Operating temperature range | -40 | 85 | ℃ | 4 | |||
| Storage temperature | -65 | 150 | ℃ | 4 | |||
| Propagation delay, output high (tDPDH) | tDPDH | 72 | 纳秒 | (VIN－VCSN)：0.15V到0.075V | 5 | ||
| Propagation delay, output low (tDPDL) | tDPDL | 66 | 纳秒 | (VIN－VCSN)：0.06V到0.135V | 5 | ||
| CSN pin input current | ICSN | 1 | 微安 | 5 | |||
| LDRV pin output current | 0.65 | 安培 | VCSN＝VIN, VDRV＝0.5×VCC | 5 | |||
| LDRV pin pull-down current | 0.65 | 安培 | VCSN＝VIN－0.2V，VLDRV＝0.5×VCC | 5 | |||
| LDRV output low level | VOL | 0.3 | 伏特 | ILDRV＝－5mA | 5 | ||
| HDRV pin output current | 0.8 | 安培 | VCSN＝VIN, VDRV＝0.5×VCC | 5 | |||
| HDRV pin pull-down current | 0.8 | 安培 | VCSN＝VIN－0.2V，VHDRV＝0.5×VCC | 5 | |||
| HDRV output low level | VOL | 0.3 | 伏特 | IHDRV＝－5mA | 5 | ||
| CE input low level | VCEL | 0.7 | V | CE电压下降 | 5 | ||
| CE input high level | VCEH | 2.2 | V | CE电压上升 | 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，结束模式 | 5 | ||
| STAT output source current | ISRC | 10 | mA | VSTAT=4.7V，充电模式 | 5 |
CAD (KiCad official)
- Symbol:
CN3304 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
cn3304-etched.step/cn3304-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cn3304.step/cn3304.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ShangHai Consonance Elec datasheet (13 pp, sha256
baa5859a1f372643, retrieved 2026-10-17, 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: 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).