HA17L431 Series
High-Precision Variable Shunt Regulators
ADE-204-029B (Z) 3rd Edition Apr. 1999 Description
The HA17L43...
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.
4.5 mm A Mounting area reduced by approx 50% NC NC REF A UPAK K MPAK-5 K 2.9 mm REF
2.5 mm
1.6 mm
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.
HA17L431 Series
Block Diagram
K REF 1.240 V + −
A
Application Circuit Example
Switching Power Supply Secondary-Side Error Amplification Circuit
Vout R + − K A REF R2 GND R1
HA17L431
Product Lineup
Product Name HA17L431LP HA17L431P HA17L431UP HA17L432UP Package MPAK-5 TO-92 UPAK Application Industrial use
2
HA17L431 Series
Pin Arrangement
HA17L431P
Marking side 1 2 3
HA17L431LP A REF
HA17L431UP
H...