AP2218

Preliminary Datasheet 1A LOW DROPOUT LINEAR REGULATOR General Description The AP2218 is a low dropout linear regulator with a typical dropout of 300mV at 1A output current. The AP2218 provides current limit and thermal shutdown. On-chip thermal shutdown provides protection against any combination of high current and ambient temperature that would create excessive junction temperatures. The AP2218 has 3.3V and 5.0V versions. The AP2218 is available in the industry standard TO220F-4 package. AP2218 Features · · · · · · · Minimum Guaranteed Output Current: 1A Dropout Voltage at IOUT=1A: 300mV Output Accuracy: ± 1% Low Ground Current Internal Current Limit and Thermal Protection Reversed-battery and Reversed-lead Insertion Protection Fast Transient Response Applications · · · · · Power Module Set Top Box LCD TV PDP TV Cordless Phone www.DataSheet4U.com TO-220F-4 Figure 1. Package Type of AP2218 Aug. 2005 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 1 Preliminary Datasheet 1A LOW DROPOUT LINEAR REGULATOR Pin Configuration AP2218 T Package (TO-220F-4) 4 3 2 1 EN GND VOUT VIN Figure 2. Pin Configuration of AP2218 (Top View) Pin Description Pin Number 1 2 3 4 Pin Name VIN VOUT GND EN Unregulated Input. Regulated Output. Function Ground pin. This pin and TAB are internally connected. Logic high enable input. Aug. 2005 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 2 Preliminary Datasheet 1A LOW DROPOUT LINEAR REGULATOR Functional Block Diagram AP2218 VI...