HI-SINCERITY
MICROELECTRONICS CORP.
Spec. No. : Preliminary Data
Issued Date : 2001.01.01
Revised Date : 2001.05.21
Page No. : 1/3
H78M24AT
H78M24BT
3-TERMINAL POSITIVE VOLTAGE REGULATOR
Description
The H78M24_T series of three-terminal positive regulators are available in
the TO-126 package. This regulator can provide local on-card regulation,
eliminating the distribution problems associated with single point regulation. Each device employs internal
current limiting, thermal shut-down and safe operating area protection, making it essentially indestructible.
If adequate heat sinking is provided, they can deliver over 0.5A output current. Although designed primarily
as fixed voltage regulators, this device can be used with external components to obtain adjustable
voltages and currents.
Description
•
Output current up to 500mA is available.
•
Eliminates external compensating circuit.
•
Built-in current limiter prevents elements from destruction when load is short circuit.
•
Built-in chip junction temperature limiting circuit protects elements against thermal destruction.
•
Built-in internal power dissipation limiting circuit protects transistors at output driver.
Absolute Maximum Ratings
(Ta=25°C)
•
Input Voltage ................................................................................................................................... 35 V
•
Total Power Dissipation (Tc=25°C) ................................................................................ Internally limited
•
Operating Junction Temperature ...................................................................................... 0
°C
to 125
°C
•
Output Current (Tc=25°C) .............................................................................................................. 0.5 A
•
Lead Temperature (Soldering 10S) .............................................................................................. 230
°C
Typical Application
Block Diagram
Vin
1
H78M24_T
2
3
Vout
1
Input
Current
Generator
Series pass
Element
SOA
Protection
Error
Amplifier
Thermal
Protection
3
Output
C1
C2
Starting
Circuit
Reference
Voltage
Note :
C1 and C2 are required if regulator is
located far from power supply filter
and load, or oscillation may induced
on the loop.
2
GND
H78M15AT, H78M15BT
HSMC Product Specification
HSMC [ HI-SINCERITY MOCROELECTRONICS ]
