Richtek USA Inc. RT9043GB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.67 | $0.67 |
| 15+ | $0.65 | $9.75 |
| 25+ | $0.64 | $16.00 |
| 50+ | $0.60 | $30.00 |
| 100+ | $0.53 | $53.00 |
| N+ | $0.11 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Richtek USA Inc. |
| Product Series | |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | 1.2V |
| Voltage - Output (Max) | 5V |
| Voltage Dropout (Max) | 0.35V @ 400mA |
| Current - Output | 400mA |
| Current - Quiescent (Iq) | 50 µA |
| Current - Supply (Max) | - |
| PSRR | 67dB ~ 56dB (1kHz ~ 10kHz) |
| Control Features | Enable |
| Protection Features | Over Current |
| Operating Temperature | -40°C ~ 85°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | SC-74A, SOT-753 |
| Supplier Device Package | SOT-23-5 |
| ROHS |  |
The RT9043GB from Richtek is a fixed 5V LDO regulator offering 400mA output current. It features an ultra-low dropout of 0.35V at full load and a quiescent current of 50µA. With PSRR of 67dB at 1kHz, it provides excellent noise rejection. The SOT-23-5 package is ideal for space-constrained applications.
- Ultra-Low Dropout: 0.35V at 400mA enables operation from 5V rails with minimal headroom.
- Low Quiescent Current: 50µA extends battery life in portable devices.
- High PSRR: 67dB at 1kHz filters switching noise from DC-DC converters.
- Compact Package: SOT-23-5 fits tight PCB layouts.
USB Peripheral Power
Converts 5V USB to a stable 5V rail with 0.35V dropout, ensuring clean power for peripherals even with voltage drops in cables.
FPGA Core Supplies
Provides a low-noise 5V rail for FPGA I/O banks, with 67dB PSRR at 1kHz reducing switching noise.
Portable Audio DACs
The 50µA quiescent current and low dropout make it ideal for battery-powered audio devices requiring a clean 5V supply.
Automotive Sensors
Stable 5V output for pressure and temperature sensors, with SOT-23-5 package fitting compact ECU designs.
LED Driver Bias
Supplies a regulated 5V bias rail for LED drivers, ensuring consistent brightness across temperature.
- Q: What is the output voltage?
- A: The RT9043GB provides a fixed 5V output.
- Q: What is the maximum output current?
- A: It can deliver up to 400mA.
- Q: What is the input voltage range?
- A: The input voltage range is up to 1.2V (refer to datasheet for minimum).
- Q: What is the dropout voltage?
- A: Dropout is 0.35V at 400mA load.
- Q: What is the quiescent current?
- A: Quiescent current is 50µA.
- Q: What package is available?
- A: It comes in a SOT-23-5 package.
RT9043GB.pdf
- Q: What is the output voltage?
- A: The RT9043GB provides a fixed 5V output.
- Q: What is the maximum output current?
- A: It can deliver up to 400mA.
- Q: What is the input voltage range?
- A: The input voltage range is up to 1.2V (refer to datasheet for minimum).
- Q: What is the dropout voltage?
- A: Dropout is 0.35V at 400mA load.
- Q: What is the quiescent current?
- A: Quiescent current is 50µA.
- Q: What package is available?
- A: It comes in a SOT-23-5 package.
