HA17L431 Series

High-Precision Variable Shunt Regulators

ADE-204-029B (Z)

3rd Edition

Apr. 1999

Description

The HA17L431LP(MPAK-5) / P(TO-92) / UP(UPAK) are temperature-compensated variable shunt

regulators. These ICs can operate at about half voltage in comparison with HA17431V series. They can be

replaced for simple Zener diode and they can also be used for switching power supply secondary-side error

amplification circuit. MPAK-5, TO-92 and UPAK packages are available. The MPAK-5 package, in

particular, is suitable for high-density mounting, with a mounting area approximately half that of Hitachi’s

UPAK products.

K

REF

A

UPAK

4.5 mm

2.5 mm

MPAK-5

K

REF

A

2.9 mm

1.6 mm

NC

NC

Mounting area

reduced by

approx 50%

Features

• On-chip high-precision reference voltage source: 1.240 V ± 1.5% (Ta = 25°C)

• Small reference voltage temperature coefficient: 30 ppm/°C Typ

• Maximum cathode voltage: 16 V

• Maximum cathode current: 50 mA

• Minimum cathode current: 200 µA Typ

• Operating temperature range: –20 to +85°C

Application Example

• Reference voltage generation circuits, etc.