HSMC H78M08BT, H78M08AT Datasheet

HI-SINCERITY

MICROELECTRONICS CORP.

Spec. No. : Preliminary Data
Issued Date : 2001.01.01
Revised Date : 2001.05.21
Page No. : 1/3

H78M08AT
H78M08BT

3-TERMINAL POSITIVE VOLTAGE REGULATOR

Description

The H78M08_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

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

VoutVin

H78M08_T

(Ta=25°C)

1

Input

Current

Generator

Series pass

SOA

Protection

Element

3

Output

C1 C2

Note :
C1 and C2 are required if regulator is
located far from power supply filter
and load, or oscillation may induced
on the loop.

H78M08AT, H78M08BT HSMC Product Specification

Starting

Circuit

Reference

Voltage

Error

Amplifier

Thermal

Protection

2

GND

HI-SINCERITY

MICROELECTRONICS CORP.

Spec. No. : Preliminary Data
Issued Date : 2001.01.01
Revised Date : 2001.05.21
Page No. : 2/3

Electrical Characteristics

H78M08AT

•

Vin=14V, Io=350mA, 0°C≤Tj≤125°C, PD≤5W, unless otherwise specified

Symbol Characteristic Min Typ Max Units

Vo
Vo

Regline

Regload

IB

IB

∆

RR

Vi-Vo

VN
Isc

Imax

TCVo Average Temperature Coefficient of Output Voltage, Io=5mA - -0.5 -

Output Voltage (Tj=25°C)
Output Voltage (10.5V≤Vin≤23V, 5mA≤Io≤350mA)
Line Regulation (Tj=25°C, Io=200mA), 10.5V≤Vin≤25V
Line Regulation (Tj=25°C, Io=200mA), 11V≤Vin≤25V
Load Regulation (Tj=25°C), 5mA≤Io≤500mA
Load Regulation (Tj=25°C), 5mA≤Io≤200mA
Quiescent Current (Tj=25°C)
Quiescent Current Change (Tj=25°C), 10.5V≤Vin≤25V, I o=200mA
Quiescent Current Change (Tj=25°C), 5mA≤Io≤350mA
Ripple Rejection, 11.5V≤Vin≤21.5V, Io=300mA, f=120Hz
Dropout Voltage (Io=500mA, Tj=25°C)
Output Noise Voltage (Tj=25°C), 10Hz≤f≤100KHz
Short Circuit Current Limit (Tj=25°C), Vin=35V
Peak Output Current (Tj=25°C)

7.76 8 8.24 V

7.68 8 8.32 V

- 5 100

-550

- - 150

--75

-3.26 mA

--0.8

--0.5

56 - - dB

-2- V

- 40 100 uV

- 300 - mA

- 700 - mA

mV

mV

mA

mV/°C

H78M08BT

•

Vin=14V, Io=350mA, 0°C≤Tj≤125°C, PD≤5W, unless otherwise specified

Symbol Characteristic Min Typ Max Units

Vo
Vo

Regline

Regload

IB

IB

∆

RR

Vi-Vo

VN
Isc

Imax

TCVo Average Temperature Coefficient of Output Voltage, Io=5mA - -0.5 -

Output Voltage (Tj=25°C)
Output Voltage (10.5V≤Vin≤23V, 5mA≤Io≤350mA)
Line Regulation (Tj=25°C, Io=200mA), 10.5V≤Vin≤25V
Line Regulation (Tj=25°C, Io=200mA), 11V≤Vin≤25V
Load Regulation (Tj=25°C), 5mA≤Io≤500mA
Load Regulation (Tj=25°C), 5mA≤Io≤200mA
Quiescent Current (Tj=25°C)
Quiescent Current Change (Tj=25°C), 10.5V≤Vin≤25V, I o=200mA
Quiescent Current Change (Tj=25°C), 5mA≤Io≤350mA
Ripple Rejection, 11.5V≤Vin≤21.5V, Io=300mA, f=120Hz
Dropout Voltage (Io=500mA, Tj=25°C)
Output Noise Voltage (Tj=25°C), 10Hz≤f≤100KHz
Short Circuit Current Limit (Tj=25°C), Vin=35V
Peak Output Current (Tj=25°C)

7.6 8 8.4 V

7.6 8 8.4 V

- 5 120

-560

- - 170

--85

-3.26 mA

--1

--0.6

56 - - dB

-2- V

- 40 120 uV

- 300 - mA

- 700 - mA

mV

mV

mA

mV/°C

H78M08AT, H78M08BT HSMC Product Specification