component
RT9527GQW
Public Made by Adomby adom
Richtek Tech Battery Management, WDFN-8-EP(2x2). 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
markdownRT9527GQW
Richtek Tech · Battery Management · WDFN-8-EP(2x2)
RT9527GQW from Richtek Tech, in a WDFN-8-EP(2x2). 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 | VIN | power_in | Supply voltage input that can withstand up to 28V (recommended operating range 4.4V to 6V). |
| 2 | PGOOD | output | Power good status output, active-low open-drain, asserts low when VIN is in the proper working range (abs max -0.3V to 28V). |
| 3 | CHG | output | Charger status output, active-low open-drain, low while charging and high impedance when termination current is reached or on timer fault (abs max -0.3V to 28V). |
| 4 | GND | power_in | Ground; shared with the exposed pad, which must be soldered to a large PCB ground plane for maximum power dissipation. |
| 5 | ISET | passive | Charge current setting pin; a resistor RISET to GND sets the fast-charge current (ICHG = KCHG/RISET, 10mA to 600mA). |
| 6 | TIMER | passive | Safe-charge timer setting pin; a capacitor to GND sets fast-charge fault time tFCHG = 14400 x CTIMER (s, CTIMER in uF). |
| 7 | TS | input | Temperature sense input connected to the battery thermistor; charging pauses when the battery is too hot or too cold until it re-enters the valid range (abs max -0.3V to 28V). |
| 8 | BAT | power_out | Charge current output to the battery, regulated to 4.2V (4.158V to 4.242V). |
| 9 | GND | power_in | Exposed pad, ground; must be soldered to a large PCB ground plane for maximum power dissipation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Richtek Tech |
| Package | WDFN-8-EP(2x2) |
| Category | Power Management (PMIC) |
| Pins | 9 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Input Voltage (absolute max) | VIN | -0.3 | 28 | V | 4 | ||
| CHG, PGOOD, TS voltage | -0.3 | 28 | V | 4 | |||
| Other pins voltage | -0.3 | 6 | V | 4 | |||
| Power Dissipation | PD | 2.19 | W | TA = 25°C, WDFN-8L 2x2 | 4 | ||
| Lead Temperature | 260 | °C | Soldering, 10 sec. | 4 | |||
| Junction Temperature | TJ | 150 | °C | 4 | |||
| Storage Temperature | -65 | 150 | °C | 4 | |||
| ESD HBM | 2 | kV | HBM | 4 | |||
| Thermal resistance junction to ambient | θJA | 45.5 | °C/W | WDFN-8L 2x2, JEDEC 51-7 four-layer board, TA = 25°C | 4 | ||
| Thermal resistance junction to case | θJC | 11.5 | °C/W | WDFN-8L 2x2, at exposed pad | 4 | ||
| Supply Input Voltage (recommended) | VIN | 4.4 | 6 | V | 4 | ||
| Junction Temperature Range | TJ | -40 | 125 | °C | 4 | ||
| Ambient Temperature Range | TA | -40 | 85 | °C | 4 | ||
| VIN Under Voltage Lockout Threshold | VUVLO | 3.1 | 3.3 | 3.5 | V | VIN = 0V to 5V | 4 |
| VIN − BAT VOS Rising | VOS_H | 100 | 200 | mV | 4 | ||
| VIN − BAT VOS Falling | VOS_L | 10 | 50 | mV | 4 | ||
| VIN Standby Current | ISTANDBY | 1 | 2 | mA | VBAT = 4.5V | 4 | |
| BAT Sleep Leakage Current | ISLEEP | 1 | μA | VIN = 0V | 4 | ||
| Battery Voltage Regulation | VREG | 4.158 | 4.2 | 4.242 | V | TJ = 0°C to 85°C | 4 |
| Re-Charge Threshold | ΔVREGCHG | 60 | 100 | 140 | mV | Battery Regulation − Recharge Level | 4 |
| VIN Charge Setting Range | ICHG | 10 | 600 | mA | 4 | ||
| Fast-Charge Current Factor 1 | KCHG_F1 | 510 | 600 | 690 | AΩ | ICHG_F1 = KCHG_F1 / RISET, ICHG_F1 = 10mA to 50mA | 4 |
| Fast-Charge Current Factor 2 | KCHG_F2 | 570 | 600 | 630 | AΩ | ICHG_F2 = KCHG_F2 / RISET, ICHG_F2 = 50mA to 600mA | 4 |
| Pre-Charge Current Factor | KCHG_P | 30 | 60 | 90 | AΩ | ICHG_P = KCHG_P / RISET | 5 |
| BAT Pre-Charge Threshold | VPRECH | 2.7 | 2.8 | 2.9 | V | VBAT Falling | 5 |
| Termination Current Ratio | ITERMI | 5 | 10 | 15 | % | VBAT > VPREC, ICHG < ITERMI, CHG = L to H | 5 |
| Over Voltage Protection | VOVP | 6.2 | 6.5 | 6.8 | V | 5 | |
| ISET Pin Short Protection | RSHORT | 375 | 500 | 625 | Ω | 5 | |
| Cold Temperature Fault Threshold Voltage | VCOLD | 60 | 61 | 62 | %VIN | Rising Threshold | 5 |
| Hot Temperature Fault Threshold Voltage | VHOT | 29 | 30 | 31 | %VIN | Falling Threshold | 5 |
| Pre-Charge Fault Time | tPCHG | 1440 | 1800 | 2160 | s | CTIMER = 1μF (1 / 8 x tFCHG) | 5 |
| Fast-Charge Fault Time | tFCHG | 11520 | 14400 | 17280 | s | CTIMER = 1μF | 5 |
| VIN Under Voltage Lockout Hysteresis | ΔVUVLO | 240 | mV | VIN = 5V to 0V | 4 | ||
| VIN Power FET On-Resistance | RDS(ON) | 0.8 | Ω | IBAT = 450mA | 4 | ||
| Thermal Regulation | TREG | 125 | °C | 5 | |||
| PGOOD Pull Down Voltage | VPGOOD | 200 | mV | IPGOOD = 5mA | 5 | ||
| CHG Pull Down Voltage | VCHG | 200 | mV | ICHG = 5mA | 5 |
CAD (KiCad official)
- Symbol:
RT9527GQW - Footprint:
Package_DFN_QFN:WDFN-8-1EP_2x2mm_P0.5mm_EP0.8x1.2mm - 3D model: WDFN-8-EP(2x2), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.75 mm nominal WSON height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
rt9527gqw-etched.step/rt9527gqw-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rt9527gqw.step/rt9527gqw.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Richtek Tech datasheet (19 pp, sha256
e4797cc9f6516a05, retrieved 2026-10-26, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).