Sanyo L88R05_SERIES Specifications

Ordering number: EN3892B

Monolithic Linear IC

L88R05 Series

5 V, 1 A Voltage-regulator ICs

with Reset Function

Overview

The L88R05 Series is a series of low-saturation voltage
regulator ICs that are equipped with a function that generates a
reset signal when the power supply for a microcontroller
system is turned on or off.

Applications

.

Prevents malfunction when the microcontroller power supply
is turned on or off.

.

Designed to handle malfunction caused by momentary power
interruptions.

.

Suited for portable electronic equipment, mobile electronic
equipment, and other battery-powered equipment with little
capacity to handle fluctuation in input voltage; also suited
for equipment with large fluctuations in the primary power
supply.

Functions

.

Power supply reset generation function; the reset threshold
voltages are ranked.

L88R05C: V
L88R05D: V
L88R05E: V

.

5 V, 1 A output characteristics

RT
RT
RT

= 4.5 V
= 4.2 V
= 3.9 V

Package Dimensions

unit : mm

3079-T0220-5H

[L88R05 Series]

SANYO : TO220-5H

Features

.

Minimum I/O voltage difference is small (0.5 V typ.), making power conservation possible, and makes smaller heatsink and
transformers possible.

.

External capacitor for reset signal output delay time adjustment.

.

Sink/source reset output provides compatibility with logic circuitry that has an internal pull-down resistor. Active pull-up
facilitates noise suppression.

.

Various types of protective circuits on chip (fold back current limiting, thermal protection).

.

The package is the TO220-5H; this package facilitates designs for the radiation of heat during the mounting process.

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 Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

O1596HA(II)/5272TS No.3892-1/6

L88R05 Series

Specifications

Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Maximum input voltage
Reset pin voltage

Allowable power dissipation Pd max

Junction-to-ambiet thermal
resistance

Junction-to-case thermal
resisitance

Operating temperature Topr –40 to +85 °C
Storge temperature Tstg –55 to +150 °C

V

max

IN

V

max

RES

Ta % 25°C, independent IC 1.75 W
Tc % 50°C, ideal radiation of heat 20 W

Uj-a 71.4 °C/W

Uj-c 5 °C/W

Operating Conditions atTa=25°C

Parament Symbol Conditions Ratings Unit

Input voltage
Output current
Reset output source current
Reset output sink current

V

l

OUT

l

ORH

l

ORL

IN

18 V
18 V

5.6 to 17 V
0to1 A

0 to 200 µA

0to2 mA

Operating Characteristics at Tj = 25 °C, VIN=8V,I

Parameter Symbol Condition min typ max Unit
[Power Supply]
Output voltage V

Dropout voltage
Line regulation ∆V

Load regulation ∆V
Peak output current l
Output short-circuit current l

Current drain
Output noise voltage V

Output voltage temperature
coefficient

Ripple rejection ratio Rrej f = 120 Hz, 6 V % V
[Reset]
High-level reset output voltage V
Low-level reset output voltage V

Reset threshold voltage V

Reset hysteresis voltage V
Output delay time t

OUT

V

DROP1

V

DROP2lOUT

OLN
OLD

OP

OSC

I

Q1

I

Q2

NO

∆Vo/∆Ta Tj =25 to 125 °C –0.5 mV/°C

ORH

ORL

RT

hys

d

= 300 mA 0.25 0.50 V

5.6 V % VIN% 17 V 10 70 mV
5mA%I

I

= 0 2.1 4 mA

OUT

10 Hz % f % 100 kHz 70 µVrms

l

= 200 µA, CD open 4.83 4.98 5.13 V

ORH

l

= 2 mA, CD grounded 100 200 mV

ORL

C-rank 4.3 4.5 4.7 V
D-rank 4.0 4.2 4.4 V
E-rank 3.7 3.9 4.1 V

Cd = 0.1 µF 7.5 10 12.5 ms

% 1 A 50 150 mV

OUT

IN

= 1 A, C

OUT

% 17 V 60 dB

= 47 µA for specified circuits

OUT

4.85 5.0 5.15 V

0.5 1.0 V

1 1.8 A

0.3 1.2 A

32 80 mA

50 100 200 mV

Pin Assignments

Top view

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