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IP5508_BZ_188
Public Made by Adomby adom
INJOINIC Battery Management, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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Symbol & Footprint
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README
markdownIP5508_BZ_188
INJOINIC · Battery Management · QFN-32-EP(5x5)
IP5508_BZ_188 from INJOINIC, in a QFN-32-EP(5x5). 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 | LED1 | output | Digit/LED display driver pin 1 for the battery-level indicator, wired to VCC through 100R resistors in the LED display configuration. |
| 2 | VSET1 | input | Battery voltage setting pin 1; together with VSET2 it selects the 4.20 V, 4.30 V, 4.35 V or 4.40 V constant-voltage charge level through the Vset[2:1] coding. |
| 3 | IO8 | bidirectional | General-purpose GPIO pin with a stated IO port drive current of 4 mA to 8 mA (5 mA typical). |
| 4 | MODE1 | input | Key mode selection pin 1; together with MODE2 it selects one of four key operating modes (power on/off, flashlight or lamp control). |
| 5 | MODE2 | input | Key mode selection pin 2; together with MODE1 it selects one of four key operating modes. |
| 6 | DP | bidirectional | DCP function pin (shown as DP in the pin list and application circuit) for USB dedicated charging port detection. |
| 7 | DM | bidirectional | DCP function pin (shown as DM in the pin list and application circuit) for USB dedicated charging port detection. |
| 8 | ADC1 | input | ADC1 analog input to the IC's internal 14-bit ADC. |
| 9 | ADC2 | input | ADC2 analog input to the IC's internal 14-bit ADC. |
| 10 | ADCGND | power_in | System ground for the ADC and analog circuitry. |
| 11 | FSEL | input | Battery initial capacity setting pin; the external resistor R19 sets capacity as R19 x 0.2 mAh, up to 25000 mAh. |
| 12 | NTC | input | NTC function pin for temperature sensing; the application circuit uses a 100K at 25 °C NTC. |
| 13 | VSET2 | input | Battery voltage setting pin 2; together with VSET1 it selects the constant-voltage charge level. |
| 14 | AGND | power_in | System ground pin. |
| 15 | VCC | power_out | Always-on 3.1 V LDO output with 50 mA load capability; the datasheet gives VCC as 3.05 V to 3.15 V at VBAT = 3.7 V. |
| 16 | BAT | input | Battery voltage sampling pin; the battery operating voltage range is stated as 3 V to 4.4 V. |
| 17 | CSIN | power_in | System power supply and battery voltage sampling pin. |
| 18 | PGND | power_in | Power ground pin for the DC-DC converter. |
| 19 | LX | passive | DC-DC switching node that connects to the 1 uH inductor. |
| 20 | LX | passive | DC-DC switching node that connects to the 1 uH inductor. |
| 21 | LX | passive | DC-DC switching node that connects to the 1 uH inductor. |
| 22 | VOUT | power_out | DC-DC 5 V boost output; rated for 2.4 A output current with 5.0 V typical at 2.4 A from a 3.7 V battery. |
| 23 | VOUT | power_out | DC-DC 5 V boost output; rated for 2.4 A output current with 5.0 V typical at 2.4 A from a 3.7 V battery. |
| 24 | VIN | power_in | DC-DC 5 V charge input; recommended input voltage is 4.5 V to 5.8 V and absolute maximum is -0.3 V to 12 V. |
| 25 | VIN | power_in | DC-DC 5 V charge input; recommended input voltage is 4.5 V to 5.8 V and absolute maximum is -0.3 V to 12 V. |
| 26 | KEY | bidirectional | Button input and flashlight driver pin; flashlight drive current is stated as 5 mA to 15 mA. |
| 27 | LED6 | output | Digit/LED display driver pin 6 for the battery-level indicator. |
| 28 | LED5 | output | Digit/LED display driver pin 5 for the battery-level indicator. |
| 29 | LED4 | output | Digit/LED display driver pin 4 for the battery-level indicator. |
| 30 | IO6 | bidirectional | General-purpose GPIO pin with a stated IO port drive current of 4 mA to 8 mA (5 mA typical). |
| 31 | LED3 | output | Digit/LED display driver pin 3 for the battery-level indicator. |
| 32 | LED2 | output | Digit/LED display driver pin 2 for the battery-level indicator. |
| 33 | EPAD/PGND | power_in | Exposed pad for power ground and heat dissipation; it must be kept in good contact with GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | INJOINIC |
| Package | QFN-32-EP(5x5) |
| Category | Power Management (PMIC) |
| Pins | 33 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 端口输入电压范围 | VIN | -0.3 | 12 | V | 4 | ||
| 结温范围 | TJ | -40 | 150 | ℃ | 4 | ||
| 存储温度范围 | Tstg | -60 | 150 | ℃ | 4 | ||
| 输入电压 | VIN | 4.5 | 5 | 5.8 | V | 5 | |
| 工作环境温度 | TA | 0 | 70 | ℃ | 5 | ||
| 输入电压 | VIN | 4.5 | 5 | 5.8 | V | VBAT=3.7V | 5 |
| 输入过压 | VINOV | 5.6 | 5.8 | 6 | V | 5 | |
| 输入欠压保护 | VINUV | 4.4 | 4.5 | 4.6 | V | 5 | |
| CV 恒压充电电压 (CV4.2V) | 4.18 | 4.21 | 4.24 | V | VSET[2:1]=2b00 | 5 | |
| CV 恒压充电电压 (CV4.30V) | 4.28 | 4.31 | 4.34 | V | VSET[2:1]=2b01 | 5 | |
| CV 恒压充电电压 (CV4.35V) | 4.33 | 4.36 | 4.4 | V | VSET[2:1]=2b10 | 5 | |
| CV 恒压充电电压 (CV4.4V) | 4.38 | 4.41 | 4.44 | V | VSET[2:1]=2b11 | 5 | |
| 充电截止电流 | Ivinstop | 200 | 300 | 500 | mA | 输入 Vin=5V | 5 |
| 充电电流 | IVIN | 1.7 | 2 | 2.3 | A | VBAT=3.7V | 5 |
| 涓流充电电流 | ITRKL | 100 | 200 | 300 | mA | VIN=5v，BAT=2.7v | 5 |
| 涓流截止电压 | VTRKL | 2.9 | 3 | 3.1 | V | 5 | |
| 再充电阈值 | VRCH | 4.07 | 4.1 | 4.13 | V | 5 | |
| 充电截止时间 | TEND | 20 | 24 | 28 | Hour | 5 | |
| 电池工作电压 | VBAT | 3 | 3.7 | 4.4 | V | 5 | |
| 低电关机电压 | VBATLOW | 2.9 | 2.95 | 3 | V | IOUT=2A | 5 |
| 开关工作电池输入电流 | IBAT | 2 | 6 | mA | VBAT=3.7V，VOUT=5.1V，fs=500KHz (无数码管、无led显示、Vout无负载) | 5 | |
| DC 输出电压 | VOUT | 5 | 5.12 | 5.25 | V | VBAT=3.7V @0A | 5 |
| DC 输出电压 | VOUT | 4.85 | 5 | 5.35 | V | VBAT=3.7V @2.4A | 5 |
| 输出电压纹波 | ΔVOUT | 50 | 100 | 150 | mV | VBAT=3.0V~4.4V | 6 |
| 升压系统供电电流 | Ivout | 0 | 2.4 | A | VBAT=3.0V~4.4V | 6 | |
| 升压系统过流关断电流 | Ivout | 2.45 | 2.8 | 3.2 | A | VBAT=3.0V~4.4V | 6 |
| 放电开关频率 | fs | 450 | 500 | 550 | KHz | 6 | |
| 充电开关频率 | fs | 450 | 500 | 550 | KHz | 6 | |
| 电池输入待机电流 | ISTB | 80 | 120 | uA | VIN=0V，VBAT=3.7V | 6 | |
| LED 照明驱动电流 | Ilight | 5 | 10 | 15 | mA | 6 | |
| IO 口驱动电流 | IGpio | 4 | 5 | 8 | mA | 6 | |
| 无负载自动关机时间 | TloadD | 27 | 30 | 33 | s | 负载电流持续小于 50mA | 6 |
| 轻载关机电流 | Iplout | 20 | 50 | 70 | mA | VBAT=3.7V | 6 |
| 短按按键时间 | TOnDebounce | 100 | 300 | ms | 6 | ||
| 长按按键时间 | TKeylight | 2 | 3 | s | 6 | ||
| 热关断结温 | TOTP | 130 | 140 | 150 | ℃ | 上升温度 | 6 |
| 热关断迟滞 | ΔTOTP | 30 | 40 | 50 | ℃ | 6 | |
| 人体模型（HBM） | ESD | 4 | KV | 4 | |||
| 热阻（结温到环境） | θJA | 40 | ℃/W | 4 | |||
| PMOS 导通电阻 | rDSON | 40 | mΩ | 6 | |||
| NMOS 导通电阻 | 35 | mΩ | 6 | ||||
| VIN和VOUT PMOS导通电阻 | 90 | mΩ | VIN=5V | 6 | |||
| VIN和VOUT PMOS过流保护 | IIDOCP | 3 | A | VIN=5V | 6 | ||
| VCC 电压 | VCC | 3.05 | 3.1 | 3.15 | V | Vbat=3.7V | 6 |
| 负载过流检测时间 | TUVD | 30 | ms | 输出电压持续低于 4.2V | 6 |
CAD (KiCad official)
- Symbol:
IP5508_BZ_188 - Footprint:
Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm - 3D model: QFN-32-EP(5x5) (KiCad packages3D, STEP)
- 3D model files:
ip5508-bz-188-etched.step/ip5508-bz-188-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ip5508-bz-188.step/ip5508-bz-188.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: INJOINIC datasheet (18 pp, sha256
144b9e53f90597fc, 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).