IC
Low Dropout Linear Regulator
uP8808PQ
Ultra Low Noise, Fast Response, High PSRR 1.5A Low Dropout Linear Regulator
Datasheets PDF
General Description
The uP8808P/Q is an ultra low noise, fast response, high power supply rejection ratio (PSRR) low dropout regulator specifically designed to continuously deliver up to 1.5A output current. Designed with a P-channel MOSFET series pass transistor, the uP8808P/Q yields extremely low dropout voltage (e.g. 240mV at 1A) and maintains very low ground current (200uA).The uP8808P/Q is designed and optimized to work with low-value, low-cost ceramic capacitors. Only a 4.7uF ceramic output capacitor is required for stable operation for any load conditions, ideal suitable for portable RF and wireless applications where PCB size are specially concerned. A bypass pin is provided to reduce output noise voltage and improve PSRR to 35dB at 100kHz.
Other features include foldback overcurrent protection, quick soft start, and overtemperature protection. The uP8808P/Q is available in fixed output voltage from 0.8V to 3.3V with 0.1V per step. The device comes in SOT223- 3L and TO252-3L packages.
Pin Configuration & Typical Application Circuit
SOT223-3L(uP8808P)
SOT223-3L(uP8808Q)
TO-252-3L(uP8808P)
Feature
- Wide Input Voltage Range from 2.2 to 5.5V
- Ultra Low Dropout Voltage: 240mV @ 1A
- High Power Supply Rejection Ratio
- 60dB at 100Hz
- 35dB at 100kHz
- Ultra Low Output Noise Voltage: 50uV(RMS)
- Ultra Fast Response to Line/Load Transient
- Stable with 4.7uF Ceramic Output Capacitor
- Low Ground Current: 200uA
- Low Shutdown Current: < 1uA
- Foldback Output Current Limit
- High Output Accuracy
- 1.5% Initial Accuracy
- Fixed Output Voltages: 0.8V to 3.3V with 0.1V Per Step
- Over-Temperature Protection
- RoHS Compliant and Halogen Free
Application
- Cellular and Cordless Phones
- Bluetooth Portable Radios and Accessaries
- Battery-Powered Equipments
- Laptop, Palmtops, Notebook Computers
- Hand-Held Instruments
- PCMCIA Cards
- Portable Information Appliances