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.
Monolithic Linear IC
Voltage Regulator Driver with Watchdog Timer
Ordering number:ENN2895A
LA5690D, 5690S
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Overview
The LA5690 is a single-chip voltage regulator for microcomputer system monitor use that performs the functions
of 5V output voltage control, watchdog timer, and voltage
detector. The LA5690 uses a minimum number of parts to
provide the basic functions.
Applications
• Microcomputer system for car equipment, refrigeration/
heating equipment, office automation equipment.
Functions
• Output voltage 5V control.
• W atchdog timer .
• Power-ON reset function.
• Positive/negative logic output for reset.
Features
• An external PNP transistor can be used to provide a lowsaturation voltage regulator.
• CK input with edge detector.
• Variable detection voltage.
• Reset output with pull-up resistor of 10kΩ.
Package Dimensions
unit:mm
3001B-DIP8
8
1
9.4
0.5
0.89 2.54
unit:mm
3017C-SIP9
1.5
[LA5690D]
5
4
1.4
[LA5690S]
22.3
3.0
0.51min
7.62
3.9max
3.2
6.4
0.25
SANYO : DIP8
3.0
4.8
1.0
1
0.99
2.54
40500TN (KT)/D219YT/8099YT/9088YT, TS No.2895–1/6
0.5
9
1.3
0.51min
5.7max
3.2
0.25
1.35
SANYO : SIP9
LA5690D, 5690S
Specifications
Maximum Ratings at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovniplortnoC
egatlovniplortnoC
tnerrucniplortnoC
egatlovtupniKCV
egatlovnipteseR
noitapissidrewopelbawollAxamdP 005Wm
erutarepmetgnitarepOrpoT 58+ot04–
erutarepmetegarotSgtsT 051+ot55–
V
V
I
V
V
* : A PNP transistor is connected to the LA5690D, 5690S externally to provide a low-saturation voltage regulator.
Therefore, I
≈100mA will flow, as starting current, in the VCC range where the output cannot be regulated.
CONT
Operating Conditions at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovniplortnoCV
tnerrucniplortnoC
tnerructuptuoteseR
egatlovnoitcetedteseR
I
xam
s1 06V
TNOC
xam
TNOC
xam
V*CC≥ V611Am
TNOC
xam 52V
KC
,xam
SER
xam
SER
TNOC
xam
TNOC
I
,xam
I
SER
SER
VSnim
xam
pu-llupRlanretxE 8Am
14V
14V
04ot6V
01Am
4V
˚C
˚C
Operating Characteristics at Ta = 25˚C, VCC=14V, IO=50mA, unless otherwise specified.
retemaraPlobmySsnoitidnoC
egatlovtuptuOV
noitalugereniL
noitalugerdaoL
niardtnerruCI
egatlovesiontuptuOV
egatlovtuptuofotneiciffeocerutarepmeT
egatlovecnerefeRV
egatlovtupniKClevel-HV
egatlovtupniKClevel-LV
tnerructupniKClevel-HI
tnerructupniKClevel-LI
egatlovtuptuoteserlevel-H
egatlovtuptuoteserlevel-L
egatlovtuptuoteserlevel-L
htdiwesluptupniKCt
emityaledtuptuoteseRt
emitgodhctaWt
emittesergodhctaWt
egatlovsiseretsyhteseRsyhVVSV5.4=001002003Vm
O
∆V
∆V
∆V
CC
ON
∆VO/∆ aT
HI
LI
HI
LI
V
V
V
V
V
V
WKC
d
DW
RW
V9 ≤VCC≤ V61201Vm
1NLO
V6 ≤VCC≤ V04403Vm
2NLO
Am1 ≤IO≤ Am05403Vm
DLO
IO0=9.45.6Am
zH01 ≤f≤ V,zHk001
=5mA, –40°C≤Ta≤+85°C
I
O
FER
VKCV5=3.07.0Am
VKC0=0.1–1.0–Aµ
/HRO
HRO
/1LRO
1LRO
/2LRO
I
I=
SER
2LRO
VKCV5=3sµ
CtFµ1=5.7015.21sm
CtFµ1=8.30.52.6sm
CtFµ1=1.052.04.0sm
SER
0=002Vµ
KC
Am8=61.08.0V
sgnitaR
nimpytxam
8.40.52.5V
2.0±
31.181.132.1V
2V
8.40.52.5V
04002Vm
tinU
mV/˚C
8.0V
Pin Assignments
Top view
The NC pin, which is left open, must not be used for wiring.
No.2895–2/6