CAT6218 Series

LDO Regulator, 300 mA, with Quick Start

Catalog

LDO Regulator, 300 mA, with Quick Start

Part	Voltage Dropout (Max) [Max]	Protection Features	Current - Output	Output Configuration	Number of Regulators	Package / Case	Control Features	Current - Quiescent (Iq)	Mounting Type	Voltage - Output (Min/Fixed)	Output Type	Voltage - Input (Max) [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Current - Supply (Max) [Max]
ON Semiconductor CAT6218-250TDGT3	0.3 V	Over Temperature	300 mA	Positive	1	SOT-23-5 Thin TSOT-23-5	Enable	75 µA	Surface Mount	2.5 V	1.81 mOhm	5.5 V	125 °C	-40 °C	90 µA
ON Semiconductor CAT6218-300TDGT3	0.3 V	Over Temperature	300 mA	Positive	1	SOT-23-5 Thin TSOT-23-5	Enable	75 µA	Surface Mount		1.81 mOhm	5.5 V	125 °C	-40 °C	90 µA

Catalog

LDO Regulator, 300 mA, with Quick Start

Key Features

• Guaranteed 300 mA output current

• Low dropout voltage of 180 mV typical at 300 mA

• Stable with 1 µF ceramic output capacitor

• External 10 nF bypass capacitor for low noise

• Quick-start feature

• No-load ground current of 55 µA typical

• Full-load ground current of 80 µA typical

• ±1.0% initial accuracy (VOUT≥ 2.0V)

• ±2.0% accuracy over temperature (VOUT≥ 2.0V)

• "Zero" current shutdown mode

• Fold-back current limit and undervoltage lockout

• Thermal protection

• Thin SOT23-5 package

Description

The CAT6218 is a 300 mA CMOS low dropout regulator that provides fast response time during load current and line voltage changes.The quick-start feature allows the use of an external bypass capacitor to reduce the overall output noise without affecting the turn-on time of just 150 µs.With zero shutdown current and low ground current of 55 µA typical, the CAT6218 is ideal for battery-operated devices with supply voltages from 2.3 V to 5.5 V. An internal under voltage lockout circuit disables the output at supply voltages under 2.1 V typical.The CAT6218 offers 1% initial accuracy and low dropout voltage, 180 mV typical at 300 mA. Stable operation is provided with a small value ceramic capacitor, reducing required board space and component cost.Other features include fold-back current current limit and thermal protection.The device is available in the low profile (1 mm max height) 5-lead thin SOT23 package.