ADP3308

Features:

±1.2% Accuracy Over Line and Load Regulations @ 25
Ultralow Dropout Voltage: 80 mV Typical @ 50 mA
Requires Only C_O= 0.47 F for Stability
anyCAP = Stable with All Types of Capacitors
(Including MLCC)
Current and Thermal Limiting
Low Noise
Low Shutdown Current: 1 mA
3.0 V to 12 V Supply Range
-20 to +85 Ambient Temperature Range
Several Fixed Voltage Options
Ultrasmall SOT-23-5 Package
Excellent Line and Load Regulations




Application

Cellular Telephones
Notebook, Palmtop Computers
Battery Powered Systems
PCMCIA Regulator
Bar Code Scanners
Camcorders, Cameras




Pinout






Specifications

Input Supply Voltage . . . . . . . . . . . . . . . . . . .....-0.3 V to +16
Shutdown Input Voltage . . . . . . . . . . . . . . ..... .-0.3 V to +16
Power Dissipation . . . . . . . . . . . . . . . . . . . .Internally Limited
Operating Ambient Temperature Range . . . ..-55 to +125
Operating Junction Temperature Range . . ....-55 to +125
_JA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....165/W
_JC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....92/W
Storage Temperature Range . . . . . . . . . . . ....-65 to +150
Lead Temperature Range (Soldering 10 sec) . . . . . . . .+300
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . ...+215
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . ..+220




Description

The ADP3308 is a member of the ADP330x family of precision low dropout anyCAP voltage regulators. It is pin-for-pin and functionally compatible with National's LP2980, but offer performance advantages. The product stands out from the conventional LDOs with a novel architecture and an enhanced process. Its patented design requires only a 0.47 F output capacitor for stability. This device is stable with any type of capacitor regardless of its ESR (Equivalent Serial Resistance) value, including ceramic types for space restricted applications. The ADP3308 achieves ±1.2% accuracy at room temperature and ±2.2% overall accuracy over temperature, line and load regulations. The dropout voltage of the ADP3308 is only 80 mV (typical) at 50 mA. This device also includes a current limit and a shutdown feature. In shutdown mode, the ground current is reduced to ~1 A.

The product operates with a wide input voltage range from 3.0 V to 12 V and delivers a load current in excess of 100 mA. The ADP3308 anyCAP LDO offers a wide range of output voltages. For 100 mA version, refer to the ADP3309 data sheet.