Rev. 1.00

1

August, 9, 2011

Rev. 1.00

PB

August 17, 2011

HT75Bxx

High PSRR 150mA LDO Regulator

Features

● Output Voltage:

1.5V/1.8V/2.5V/2.8V/3.0V/3.3V/5V

● High Output Voltage Accuracy: ±2%

● Low Voltage Drop: 330mV(Typ.)

● Maximum Input Voltage: 7.0V

● Guaranteed Output Current: 150mA

● Power-Saving Shutdown Mode

● Current limiting

● SOT23-5 and SOT89 Package

Applications

● Portable communication equipment

● Portable music player

● Electrical appliances such as cameras,

VCRs and camcorders

● Battery-powered equipment

General Description

The HT75Bxx series are CMOS-based voltage

regulator devices with high output voltage accuracy,

low quiescent current, low on-resistance, and high

ripple rejection. Each of the devices includes a voltage

reference, error amplifier, resistor-network for voltage

setting, current limit circuit, chip enable circuit and so

on.

The HT75Bxx’s current limiters' fold back circuit

also operates as a short circuit protect function for the

output current limiter.

These devices offer the benefits of low dropout

voltage as well as possessing a chip-enable function.

Additional features include an exceptionally low

and load transient response characteristics. With these

features the devices will be appropriate for use in a

wide range of application among which would include

hand-held communication equipment.

The space-saving SOT23-5, SOT89 package will be

an attractive additional feature for pocket and hand-

held applications.

Selection Table

Part No.

Output Voltage

Tolerance

Package

HT75B15

1.5V

±2%

SOT23-5

SOT89

HT75B18

1.8V

HT75B25

2.5V

HT75B28

2.8V

HT75B30

3.0V

HT75B33

3.3V

HT75B50

5.0V