FEATURES
High accuracy over line and load ±0.8% at +25°C, ±1.4% over temperature Ultralow dropout voltage: 180 mV (typical) at 200 mA Requires only CO = 0.47 μF for stability anyCAP = stable with all types of capacitors (including MLCC) 3.2 V to 12 V supply range Current and thermal limiting Low noise Dropout detector Low shutdown current: < 1 μA Thermally enhanced SOIC_N package Excellent Line and Load Regulation Performance APPLICATIONS
Cellular telephones Notebook, palmtop computers Battery powered systems Portable instruments Post regulator for switching supplies Bar code scanners FUNCTIONAL BLOCK DIAGRAMS IN ERR Q2 SD Q1 THERMAL PROTECTION DRIVER ADP3303 CC gm BANDGAP REF GND Figure 1. Functional Block Diagram OUT R1 R2 VIN C1 0.47µF NR 3 ADP3303-5.0 7 IN 8 1 OUT 2 SD 5 ON OFF ERR 6 GND 4 330kΩ EOUT VOUT = +5V C2 0.47µF SD Figure 2. Typical Application Circuit GENERAL DESCRIPTION
This device is insensitive to capacitor Equivalent Series Resistance (ESR) and is stable with any good quality capacitor, including ceramic types (MLCC) for space restricted applications.