Ordering number:ENN2622B
Monolithic Linear IC
L78LR05
150mA, 5V 5-Pin Voltage Regulator
with Reset Function
Overview
Package Dimensions
The L78LR05 is voltage regulator IC that performs the reset signal generating function when the power supply of a
microcomputer system is turned ON/OFF. The L78LR05
is convenient for battery backup system at the time of power
failure. The reset threshold voltage VRT is ranked as shown
below.
unit:mm
3103
C
D
E
F
G
4.5
4.2
3.9
3.6
3.3
1.5
H
4.8
3.0
1.2
0.6
• Prevention of malfunction that may occur when the power
supply of a microcomputer is turned ON/OFF.
• Measures taken against abnormal operations that may
occur at the time of instantaneous break of power supply.
• Direct battery backup for SRAM.
7.5
Applications
0.5
7.0
B
VRT (V)
2.3
5.5
VRT rank
[L78LR05]
6.5
5.0
0.5
0.5
1.3 1.3 1.3 1.3
1 : INPUT
2 : DELAY CAPACITOR
3 : GND
4 : RESET OUTPUT
5 : OUTPUT
SANYO : TP-5H
Features
• 5V, 150mA output.
• Capable of generating a microcomputer reset signal.
• No battery-regulator switching circuit required at the battery backup mode (Output leakage current : 2µA or less).
• An external capacitor can be used to set the reset output
delay time.
• Applicable to the power supply of CMOS, NMOS microcomputers.
• Especially suited for use as an on-board regulator for a
microcomputer system.
• Small-sized power package TP-5H permitting the equipment to be made compact.
• The allowable power dissipation can be increased by being surface-mounted on the board.
• Capable of being mounted in a variety of methodes because of various lead forming versions available.
• On-chip protectors (overcurrent limiter, ASO protector,
thermal protector).
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
D1599TH (KT)/61093TS/8039YT/5178TA/7067TA, TS No.2622–1/6
