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CN3306
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ShangHai Consonance Elec Battery Management, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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CN3306
ShangHai Consonance Elec · Battery Management · TSSOP-16
CN3306 from ShangHai Consonance Elec, in a TSSOP-16. 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 | FB | input | Battery voltage feedback pin, normally connected to a resistor divider from the battery to set the constant-voltage charge level (VREG = 1.205 V at FB in constant-voltage mode). |
| 2 | COMP | passive | Loop frequency compensation pin, with the compensation network connected between this pin and GND. |
| 3 | MPPT | input | Solar panel maximum power point tracking pin, normally connected to a resistor divider on the panel voltage, regulated to 1.205 V (typical) in MPPT mode; it can also limit input current from a weak source. |
| 4 | NC | unconnected | No connection. |
| 5 | SHDN | input | Active-high chip shutdown pin: a high level puts the IC into shutdown with all internal circuits including the 5 V regulator disabled, and a low level enables normal operation. |
| 6 | CHRG | output | Open-drain charge status output that is pulled low during constant-current and constant-voltage charging and is high-impedance otherwise. |
| 7 | DONE | output | Open-drain charge-complete indicator output that is pulled low in the charge-complete state and is high-impedance otherwise. |
| 8 | CSP | input | Positive input for charge current sensing, measuring the voltage across the sense resistor RCS together with the BAT pin. |
| 9 | BAT | passive | Battery positive connection and negative input for charge current sensing, connected to the battery positive terminal and used with CSP to sense the voltage across RCS. |
| 10 | VIN | power_in | Input supply positive pin with an input range of 4.5 V to 32 V, requiring a filter capacitor to GND. |
| 11 | VCC | power_out | 5 V regulator output, to be tied together with pin 12 and bypassed to GND with at least 4.7 µF; it outputs 5 V when VIN is between 5.5 V and 32 V and may fall below 5 V at lower input voltage. |
| 12 | VCC | power_out | 5 V regulator output, to be tied together with pin 11 and bypassed to GND with at least 4.7 µF; it outputs 5 V when VIN is between 5.5 V and 32 V and may fall below 5 V at lower input voltage. |
| 13 | DRV | output | Gate drive output for the external N-channel MOSFET, sourcing up to 0.8 A and sinking up to 1.5 A, with a 5 V high level. |
| 14 | GND | power_in | Ground, the input supply negative; to be tied together with pin 15. |
| 15 | GND | power_in | Ground, the input supply negative; to be tied together with pin 14. |
| 16 | ISW | input | Inductor current sense pin used for current control and cycle-by-cycle overcurrent protection, with an overcurrent threshold of 200 mV typical. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ShangHai Consonance Elec |
| Package | TSSOP-16 |
| Category | Power Management (PMIC) |
| Pins | 16 |
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 | 4.5 | 32 | 伏特 | 4 | ||
| Operating current | IVIN | 700 | 825 | 950 | 微安 | VFB＝1.3V，VSHDN=0V | 4 |
| Shutdown current | IVINSD | 3.6 | 5.2 | 6.8 | 微安 | SHDN＝3V，VIN＝12V | 4 |
| Shutdown current | IVINSD | 9 | 13 | 17 | 微安 | SHDN＝3V，VIN＝30V | 4 |
| FB pin feedback voltage | VREG | 1.193 | 1.205 | 1.217 | 伏特 | 恒压充电模式 | 4 |
| FB pin bias current | IFB | 60 | 300 | 纳安 | VFB＝1.2V | 4 | |
| Current sense voltage | VCS | 108 | 120 | 132 | 毫伏 | 恒流充电模式，VCSP－VBAT | 4 |
| Overvoltage threshold | Vov | 1.05 | 1.083 | 1.116 | BAT 管脚电压上升 | 4 | |
| VREG overvoltage release threshold | Vclr | 1.006 | 1.028 | 1.05 | BAT 管脚电压下降 | 4 | |
| Inductor current overcurrent threshold | VISW(OC) | 180 | 200 | 200 | 毫伏 | 测量ISW管脚电压 | 4 |
| SHDN input high level | VIH | 2.3 | 6 | 伏特 | 4 | ||
| SHDN input low level | VIL | 0 | 0.5 | 伏特 | 4 | ||
| SHDN pin bias current | ISHDN | -100 | 0 | 100 | 纳安 | 4 | |
| MPPT modulation voltage | VMPPT | 1.18 | 1.205 | 1.23 | V | 最大功率点跟踪 | 4 |
| MPPT bias current | IMPPT | -100 | 0 | 100 | nA | 4 | |
| VCC output voltage | VCC | 4.75 | 5.39 | 伏特 | IVCC＝0.1mA to 4mA, VIN＝5.5V to 32V | 4 | |
| Oscillator frequency | fosc | 285 | 330 | 375 | KHz | 4 | |
| Maximum duty cycle | Dmax | 93 | % | 4 | |||
| CHRG pin pull-down current | ICHRG | 7 | 12 | 18 | mA | VCHRG=1V，恒流充电 | 5 |
| DONE pin pull-down current | IDONE | 7 | 12 | 18 | mA | VDONE=1V，充电结束 | 5 |
| Absolute maximum VIN, CSP, BAT pin voltage | -0.3 | 36 | V | 3 | |||
| Absolute maximum other pin voltage | -0.3 | 6.5 | V | 3 | |||
| Absolute maximum operating ambient temperature | -40 | 85 | ℃ | 3 | |||
| Absolute maximum storage temperature | -65 | 150 | ℃ | 3 | |||
| Absolute maximum junction temperature | 150 | ℃ | 3 | ||||
| UVLO low-voltage latch threshold | UVLO | 4.4 | 伏特 | 4 | |||
| Charge termination threshold | Iterm | 16.6 | %ICC | 充电电流下降 | 4 | ||
| Recharge threshold | VRE | 95.8 | %VREG | 电池电压下降 | 4 | ||
| Soft-start time | 10 | 毫秒 | 4 | ||||
| Battery pin bias current | IBAT | 80 | 微安 | 关断状态或充电结束状态 | 4 | ||
| DRV output (source) current | 0.8 | 安培 | VDRV＝4V | 4 | |||
| DRV sink current | 1.5 | 安培 | VDRV＝1V | 4 | |||
| DRV fall time | tf | 25 | 纳秒 | CDRV＝2nF | 4 | ||
| DRV rise time | tr | 32 | 纳秒 | CDRV＝2nF | 4 | ||
| VCC load regulation | 5 | 毫伏 | IVCC＝0.1mA to 4mA | 4 | |||
| VCC line regulation | 6 | 毫伏 | VIN＝6V to 32V, IVCC＝3mA | 4 | |||
| Power supply rejection ratio | PSRR | -35 | dB | IVCC＝3mA，f＝10kHz | 4 | ||
| VCC startup time | tSTART | 5 | 毫秒 | VCC＝0 to 4.5V，COUT＝4.7uF | 4 | ||
| CHRG pin leakage current | ILK1 | 1 | uA | VCHRG=25V，充电结束 | 5 | ||
| DONE pin leakage current | ILK2 | 1 | uA | VDONE=25V，恒流充电 | 5 | ||
| Thermal resistance junction to case | 200 | ℃/W | Junction to Case | 3 |
CAD (KiCad official)
- Symbol:
CN3306 - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
cn3306-etched.step/cn3306-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cn3306.step/cn3306.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ShangHai Consonance Elec datasheet (13 pp, sha256
c26cc04abe03a526, retrieved 2026-10-18, 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).
# CN3306
**ShangHai Consonance Elec** · Battery Management · TSSOP-16
CN3306 from ShangHai Consonance Elec, in a TSSOP-16. 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 | FB | input | Battery voltage feedback pin, normally connected to a resistor divider from the battery to set the constant-voltage charge level (VREG = 1.205 V at FB in constant-voltage mode). |
| 2 | COMP | passive | Loop frequency compensation pin, with the compensation network connected between this pin and GND. |
| 3 | MPPT | input | Solar panel maximum power point tracking pin, normally connected to a resistor divider on the panel voltage, regulated to 1.205 V (typical) in MPPT mode; it can also limit input current from a weak source. |
| 4 | NC | unconnected | No connection. |
| 5 | SHDN | input | Active-high chip shutdown pin: a high level puts the IC into shutdown with all internal circuits including the 5 V regulator disabled, and a low level enables normal operation. |
| 6 | CHRG | output | Open-drain charge status output that is pulled low during constant-current and constant-voltage charging and is high-impedance otherwise. |
| 7 | DONE | output | Open-drain charge-complete indicator output that is pulled low in the charge-complete state and is high-impedance otherwise. |
| 8 | CSP | input | Positive input for charge current sensing, measuring the voltage across the sense resistor RCS together with the BAT pin. |
| 9 | BAT | passive | Battery positive connection and negative input for charge current sensing, connected to the battery positive terminal and used with CSP to sense the voltage across RCS. |
| 10 | VIN | power_in | Input supply positive pin with an input range of 4.5 V to 32 V, requiring a filter capacitor to GND. |
| 11 | VCC | power_out | 5 V regulator output, to be tied together with pin 12 and bypassed to GND with at least 4.7 µF; it outputs 5 V when VIN is between 5.5 V and 32 V and may fall below 5 V at lower input voltage. |
| 12 | VCC | power_out | 5 V regulator output, to be tied together with pin 11 and bypassed to GND with at least 4.7 µF; it outputs 5 V when VIN is between 5.5 V and 32 V and may fall below 5 V at lower input voltage. |
| 13 | DRV | output | Gate drive output for the external N-channel MOSFET, sourcing up to 0.8 A and sinking up to 1.5 A, with a 5 V high level. |
| 14 | GND | power_in | Ground, the input supply negative; to be tied together with pin 15. |
| 15 | GND | power_in | Ground, the input supply negative; to be tied together with pin 14. |
| 16 | ISW | input | Inductor current sense pin used for current control and cycle-by-cycle overcurrent protection, with an overcurrent threshold of 200 mV typical. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ShangHai Consonance Elec |
| Package | TSSOP-16 |
| Category | Power Management (PMIC) |
| Pins | 16 |
## 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 | 4.5 | | 32 | 伏特 | | 4 |
| Operating current | IVIN | 700 | 825 | 950 | 微安 | VFB＝1.3V，VSHDN=0V | 4 |
| Shutdown current | IVINSD | 3.6 | 5.2 | 6.8 | 微安 | SHDN＝3V，VIN＝12V | 4 |
| Shutdown current | IVINSD | 9 | 13 | 17 | 微安 | SHDN＝3V，VIN＝30V | 4 |
| FB pin feedback voltage | VREG | 1.193 | 1.205 | 1.217 | 伏特 | 恒压充电模式 | 4 |
| FB pin bias current | IFB | | 60 | 300 | 纳安 | VFB＝1.2V | 4 |
| Current sense voltage | VCS | 108 | 120 | 132 | 毫伏 | 恒流充电模式，VCSP－VBAT | 4 |
| Overvoltage threshold | Vov | 1.05 | 1.083 | 1.116 | | BAT 管脚电压上升 | 4 |
| VREG overvoltage release threshold | Vclr | 1.006 | 1.028 | 1.05 | | BAT 管脚电压下降 | 4 |
| Inductor current overcurrent threshold | VISW(OC) | 180 | 200 | 200 | 毫伏 | 测量ISW管脚电压 | 4 |
| SHDN input high level | VIH | 2.3 | | 6 | 伏特 | | 4 |
| SHDN input low level | VIL | 0 | | 0.5 | 伏特 | | 4 |
| SHDN pin bias current | ISHDN | -100 | 0 | 100 | 纳安 | | 4 |
| MPPT modulation voltage | VMPPT | 1.18 | 1.205 | 1.23 | V | 最大功率点跟踪 | 4 |
| MPPT bias current | IMPPT | -100 | 0 | 100 | nA | | 4 |
| VCC output voltage | VCC | 4.75 | | 5.39 | 伏特 | IVCC＝0.1mA to 4mA, VIN＝5.5V to 32V | 4 |
| Oscillator frequency | fosc | 285 | 330 | 375 | KHz | | 4 |
| Maximum duty cycle | Dmax | | | 93 | % | | 4 |
| CHRG pin pull-down current | ICHRG | 7 | 12 | 18 | mA | VCHRG=1V，恒流充电 | 5 |
| DONE pin pull-down current | IDONE | 7 | 12 | 18 | mA | VDONE=1V，充电结束 | 5 |
| Absolute maximum VIN, CSP, BAT pin voltage | | -0.3 | | 36 | V | | 3 |
| Absolute maximum other pin voltage | | -0.3 | | 6.5 | V | | 3 |
| Absolute maximum operating ambient temperature | | -40 | | 85 | ℃ | | 3 |
| Absolute maximum storage temperature | | -65 | | 150 | ℃ | | 3 |
| Absolute maximum junction temperature | | | | 150 | ℃ | | 3 |
| UVLO low-voltage latch threshold | UVLO | | 4.4 | | 伏特 | | 4 |
| Charge termination threshold | Iterm | | 16.6 | | %ICC | 充电电流下降 | 4 |
| Recharge threshold | VRE | | 95.8 | | %VREG | 电池电压下降 | 4 |
| Soft-start time | | | 10 | | 毫秒 | | 4 |
| Battery pin bias current | IBAT | | 80 | | 微安 | 关断状态或充电结束状态 | 4 |
| DRV output (source) current | | | 0.8 | | 安培 | VDRV＝4V | 4 |
| DRV sink current | | | 1.5 | | 安培 | VDRV＝1V | 4 |
| DRV fall time | tf | | 25 | | 纳秒 | CDRV＝2nF | 4 |
| DRV rise time | tr | | 32 | | 纳秒 | CDRV＝2nF | 4 |
| VCC load regulation | | | 5 | | 毫伏 | IVCC＝0.1mA to 4mA | 4 |
| VCC line regulation | | | 6 | | 毫伏 | VIN＝6V to 32V, IVCC＝3mA | 4 |
| Power supply rejection ratio | PSRR | | -35 | | dB | IVCC＝3mA，f＝10kHz | 4 |
| VCC startup time | tSTART | | 5 | | 毫秒 | VCC＝0 to 4.5V，COUT＝4.7uF | 4 |
| CHRG pin leakage current | ILK1 | | 1 | | uA | VCHRG=25V，充电结束 | 5 |
| DONE pin leakage current | ILK2 | | 1 | | uA | VDONE=25V，恒流充电 | 5 |
| Thermal resistance junction to case | | | 200 | | ℃/W | Junction to Case | 3 |
## CAD (KiCad official)
- Symbol: `CN3306`
- Footprint: `Package_SO:TSSOP-16_4.4x5mm_P0.65mm`
- 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files: `cn3306-etched.step` / `cn3306-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cn3306.step` / `cn3306.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [ShangHai Consonance Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588885215603806208) (13 pp, sha256 `c26cc04abe03a526`, retrieved 2026-10-18, 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/cn3306-datasheet.pdf)