NCP551 Series

LDO Regulator, 150 mA, Ultra-Low Dropout, Ultra-Low Iq

Catalog

LDO Regulator, 150 mA, Ultra-Low Dropout, Ultra-Low Iq

Part	Voltage - Input (Max) [Max]	Current - Quiescent (Iq)	Package / Case	Mounting Type	Output Type	Number of Regulators	Current - Output	Voltage - Output (Min/Fixed)	Protection Features	Voltage Dropout (Max) [Max]	Output Configuration	Operating Temperature [Max]	Operating Temperature [Min]	Current - Supply (Max) [Max]	Control Features	Supplier Device Package
ON Semiconductor NCP551SN27T1	12 V	8 ÁA	SOT-23-5 Thin TSOT-23-5	Surface Mount	1.81 mOhm	1	150 mA	2.7 V	Over Current Over Temperature	0.15 V	Positive	85 °C	-40 °C	8 µA	Enable	5-TSOP
ON Semiconductor NCP551SN50T1	12 V	8 ÁA	SOT-23-5 Thin TSOT-23-5	Surface Mount	1.81 mOhm	1	150 mA	5 V	Over Current Over Temperature	0.15 V	Positive	85 °C	-40 °C	8 µA	Enable	5-TSOP
ON Semiconductor NCP551SN32T1G	12 V	8 ÁA	SOT-23-5 Thin TSOT-23-5	Surface Mount	1.81 mOhm	1	150 mA	3.2 V	Over Current Over Temperature	0.15 V	Positive	85 °C	-40 °C	8 µA	Enable	5-TSOP
ON Semiconductor NCP551SN18T1G	12 V	8 ÁA	SOT-23-5 Thin TSOT-23-5	Surface Mount	1.81 mOhm	1	150 mA	1.8 V	Over Current Over Temperature	0.22 V	Positive	85 °C	-40 °C	8 µA	Enable	5-TSOP
ON Semiconductor NCP551SN31T1G	12 V	8 ÁA	SOT-23-5 Thin TSOT-23-5	Surface Mount	1.81 mOhm	1	150 mA	3.1 V	Over Current Over Temperature	0.15 V	Positive	85 °C	-40 °C	8 µA	Enable	5-TSOP
ON Semiconductor NCP551SN25T1	12 V	8 ÁA	SOT-23-5 Thin TSOT-23-5	Surface Mount	1.81 mOhm	1	150 mA	2.5 V	Over Current Over Temperature	0.22 V	Positive	85 °C	-40 °C	8 µA	Enable	5-TSOP
ON Semiconductor NCP551SN15T1G	12 V	8 ÁA	SOT-23-5 Thin TSOT-23-5	Surface Mount	1.81 mOhm	1	150 mA	1.5 V	Over Current Over Temperature	0.22 V	Positive	85 °C	-40 °C	8 µA	Enable	5-TSOP
ON Semiconductor NCP551SN33T1G	12 V	8 ÁA	SOT-23-5 Thin TSOT-23-5	Surface Mount	1.81 mOhm	1	150 mA	3.3 V	Over Current Over Temperature	0.15 V	Positive	85 °C	-40 °C	8 µA	Enable	5-TSOP
ON Semiconductor NCP551SN27T1G	12 V	8 ÁA	SOT-23-5 Thin TSOT-23-5	Surface Mount	1.81 mOhm	1	150 mA	2.7 V	Over Current Over Temperature	0.15 V	Positive	85 °C	-40 °C	8 µA	Enable	5-TSOP
ON Semiconductor NCP551SN29T1G	12 V	8 ÁA	SOT-23-5 Thin TSOT-23-5	Surface Mount	1.81 mOhm	1	150 mA	2.9 V	Over Current Over Temperature	0.15 V	Positive	85 °C	-40 °C	8 µA	Enable	5-TSOP

Catalog

LDO Regulator, 150 mA, Ultra-Low Dropout, Ultra-Low Iq

Key Features

• Low quiescent current of 4.0 µA typical

• Maximum Operating Voltage of 12 V

• Low Output Voltage Option

• High Accuracy Output Voltage of 2.0%

• Industrial Temperature Range of –40° C to 85° C

Description

The NCP551 series of fixed output low dropout (LDO) linear voltage regulators are designed for applications which require low quiescent current. The NCP551 series features an ultra-low quiescent current of 4.0 µA. Each device contains a voltage reference unit, an error amplifier, a PMOS power transistor, resistors for setting output voltage, current limit, and temperature limit protection circuits.The NCP551 has been designed to be used with low cost ceramic capacitors and requires a minimum output capacitor of 0.1 µF. The device is housed in the micro miniature TSOP-5 surface mount package. Standard voltage versions are 1.4, 1.5, 1.8, 2.5, 2.7, 2.8, 3.0, 3.3, and 5.0 V. Other voltages are available in 100 mV steps.