L78M00T Series

No.2609-7/8

[L78M24T]

Recommended Operating Conditions at Ta=25°C

Parameter

Symbol

Conditions

Ratings

Unit

Input voltage

VIN

27 to 35

V

Output current

IOUT

5 to 500

mA

Operating Characteristics at Ta=25°C, VIN=33V, IOUT=350mA, See specified Test Circuit.

Ratings

Parameter

Symbol

Conditions

min

typ

max

Unit

Output voltage

VOUT

Tj=25°C

23.0

24.0

25.0

V

Line regulation

ΔVO Iine

Tj=25°C, 27V≤VIN≤35V, IOUT=200mA

10.0

100

mV

Tj=25°C, 28V≤VIN≤35V, IOUT=200mA

5.0

50

mV

Load regulation

ΔVO Ioad

Tj=25°C, 5mA≤IOUT≤500mA

480

mV

Tj=25°C, 5mA≤IOUT≤200mA

240

mV

Output voltage

VOUT

27V≤VIN≤35V, 5mA≤IOUT≤350mA

22.8

25.2

V

Current dissipation

ICC

Tj=25°C

5.0

6.0

mA

Current dissipation variation (Line)

ΔICC Iine

27V≤VIN≤35V, IOUT=200mA

0.8

mA

Current dissipation variation (Load)

ΔICC Ioad

5mA≤IOUT≤350mA

0.5

mA

Output noise voltage

VNO

10Hz≤f≤100kHz

170

μV

Ripple rejection

Rrej

f=120Hz, 28V≤VIN≤35V, Tj=25°C, IOUT=100mA

50

dB

f=120Hz, 28V≤VIN≤35V, Tj=25°C, IOUT=300mA

50

70

dB

Minimum input-output voltage dropout

Vdrop

IOUT=350mA

2.0

V

Short current

IOS

Tj=25°C, VIN=35V, to GND

300

mA

Peak output current

IOP

Tj=25°C

0.7

A

Package Dimensions

Equivalent Circuit

unit : mm

3110A

Specified Test Circuit (Common to L78M00T series)

6.5

5.0

12

3

0.5

2.6

(0.65)

1.2

0.5

0.5

2.3

0.6

SANYO : TP3H

INPUT

GND

OUTPUT

Overcurrent

limiter

Starter

ASO

protector

Thermal

protector

Error amp

Reference

voltage

IL00021

1

2

3

INPUT

OUTPUT

L78MOOT

Series

IL00022

3

1

2