component
RT9167A-33GB
Public Made by Adomby adom
Richtek Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. 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
markdownRT9167A-33GB
Richtek Tech · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
RT9167A-33GB from Richtek Tech, in a SOT-23-5. 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 | Power input; the datasheet specifies an input voltage range of 2.9V to 7V (absolute maximum 8V), and the input capacitor should be a 1µF or larger low-ESR capacitor placed close to this pin. |
| 2 | GND | power_in | Ground connection that also conducts heat away from the die, so it should be connected to a large pad or ground plane. |
| 3 | EN | input | Active-high chip enable that turns the regulator on when driven high and shuts it down when pulled low; it must not be left floating and should be tied to VIN if the shutdown feature is unused, with EN input high level not exceeding the absolute maximum rating. |
| 4 | BP | passive | Reference noise bypass pin where a 10nF capacitor, with very low leakage, forms an 80Hz low-pass filter with an internal 200kΩ resistor to reduce output noise. |
| 5 | VOUT | power_out | Regulated output that is stable with a low-ESR ceramic capacitor of at least 1µF with ESR greater than 5mΩ, and should be located no more than 0.5 inch from this pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Richtek Tech |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
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 | 2.9 | 7 | V | 3 | ||
| Input Voltage Range | VIN | 2.7 | 7 | V | IL = 50mA | 3 | |
| Output Voltage Accuracy | ΔVOUT | -2 | 2 | % | IL = 1mA | 3 | |
| Maximum Output Current (RT9167A) | IMAX | 500 | mA | 3 | |||
| Current Limit (RT9167A) | ILIM | 500 | 700 | mA | RLOAD = 1Ω | 3 | |
| Quiescent Current | IG | 80 | 150 | μA | No Load | 3 | |
| Quiescent Current | IG | 90 | 150 | μA | IOUT = 300mA | 3 | |
| Quiescent Current (RT9167A) | IG | 90 | 150 | μA | IOUT = 500mA | 3 | |
| Quiescent Current | IG | 1.1 | 5 | μA | IOUT = 1mA | 3 | |
| Quiescent Current | IG | 55 | 100 | μA | IOUT = 50mA | 3 | |
| Dropout Voltage (300mA) | VDROP | 350 | 450 | mV | VOUT(Normal) = 3.0V Version; IOUT = 300mA; VOUT(Normal) − 100mV | 3 | |
| Dropout Voltage (RT9167A, 500mA) | VDROP | 600 | 750 | mV | VOUT(Normal) = 3.0V Version; IOUT = 500mA; VOUT(Normal) − 100mV | 3 | |
| Line Regulation | ΔVLINE | 6 | mV/V | VIN = (VOUT+0.15) to 7V, IOUT = 1mA | 3 | ||
| Load Regulation | ΔVLOAD | 30 | mV | IOUT = 0mA to 300mA | 3 | ||
| Load Regulation (RT9167A) | ΔVLOAD | 35 | mV | IOUT = 0mA to 500mA | 3 | ||
| EN Input High Threshold | VIH | 1.6 | V | VIN = 3V to 5.5V | 3 | ||
| EN Input Low Threshold | VIL | 0.4 | V | VIN = 3V to 5.5V | 3 | ||
| EN Bias Current | ISD | 100 | nA | 3 | |||
| Shutdown Supply Current | IGSD | 0.01 | 1 | μA | VOUT = 0V | 3 | |
| Thermal Shutdown Temperature | TSD | 155 | °C | 3 | |||
| Output Noise | eNO | 350 | nV/Hz | CBP = 10nF, COUT = 10μF | 4 | ||
| Ripple Rejection | PSRR | 58 | dB | F = 100Hz, CBP = 10nF, COUT = 10μF | 4 | ||
| Input Voltage | VIN | 8 | V | 3 | |||
| Power Dissipation, SOT-23-5 | PD | 0.4 | W | TA = 25°C | 3 | ||
| Package Thermal Resistance, SOT-23-5 junction to ambient | θJA | 250 | °C/W | Note 1: JEDEC 51-3 natural convection, TA = 25°C | 3 | ||
| Package Thermal Resistance, SOT-23-5 junction to case | θJC | 130 | °C/W | 3 | |||
| Operating Junction Temperature Range | TJ | -40 | 125 | °C | 3 | ||
| Storage Temperature Range | TSTG | -65 | 150 | °C | 3 | ||
| Lead Temperature (Soldering) | 260 | °C | 10 sec. | 3 |
CAD (KiCad official)
- Symbol:
RT9167A-33GB - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
rt9167a-33gb-etched.step/rt9167a-33gb-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rt9167a-33gb.step/rt9167a-33gb.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Richtek Tech datasheet (13 pp, sha256
df5f7c644e9742e0, retrieved 2026-10-18, tier: lcsc) - 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).