Low Dropout Linear Regulator
Single Output LDO
uP8806
Ultra Low Noise, Fast Response, High PSRR 300/500mA Low Dropout Linear Regulator
Datasheets PDF
General Description
The uP8806 is an ultra low noise, fast response, high power supply rejection ratio (PSRR) low dropout regulator specifically designed to continuously deliver up to 300mA output current. Designed with a P-channel MOSFET series pass transistor, the uP8806 yields extremely low dropout voltage (e.g. 300mV at 300mA).
The uP8806 does not require a bypass capacitor, hence achieving the smallest PCB area. This device reduces output voltage noise under 70uV(RMS) and improves PSRR to 40dB at 100kHz.
The uP8806 is designed and optimized to work with lowvalue, low-cost ceramic capacitors. Only a 1uF ceramic output capacitor is required for stable operation for any load conditions.
Other features include foldback overcurrent protection, quick soft start, and overtemperature protection. The uP8806 is available in fixed output voltage from 0.8V to 4.75V with 0.1V per step. The device comes in SC70 – 5L,SC82 – 4L, (T)SOT23 – 3L/5L, SOT223 – 3L, WDFN1.6×1.6 – 6L SOT89 – 3L and TO252 – 3L packages.
Pin Configuration & Typical Application Circuit
(T)SOT23-5L / SC70-5L
SC82-4L
WDFN1.6×1.6-6L
TO-252-3L
SOT89-3L (AKA3)
SOT89-3L (BKA3)
SOT223-3L
SOT23-3L
Feature
- Wide Input Voltage Range from 2.4 to 6V.
- Ultra Low Dropout Voltage: 300mV @ 300mA.
- High Power Supply Rejection Ratio Up to 74dB @1kHz.
- Ultra Fast Response in Line/Load Transient.
- Stable with 1uF Ceramic Output Capacitor.
- Low Shutdown Current: < 1uA.
- Foldback Output Current Limit.
- High Output Accuracy.
- 1.5% Initial Accuracy.
- Fixed Output Voltages: 0.8V to 4.75V 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 Equipment.
- Laptop, Palmtops, Notebook Computers.
- Hand-Held Instruments.
- PCMCIA Cards.
- Portable Information Appliances