LA5693S
LA5693D, 5693S, 5693M
Ordering number : EN2769B
Voltage Regulator Driver
with Watchdog Timer
Monolithic Linear IC
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
D0597HA (KT)/8199YT/4268TA, TS No.2769-1/6
Overview
The LA5693 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. Since the LA5693 can hold the reset
output, it is especially suited for use in peripheral control
and monitor output applications (example : valves used in
refrigeration equipment, hot water supply system).
Applications
• Microcomputer system for car equipment, refrigeration/
heating equipment, office automation equipment.
Functions
• Output voltage 5V control.
• Watchdog timer.
• Power-ON reset function.
• Reset hold output [RES (2)] (Cleared with CK reinput).
Features
• An external PNP transistor can be used to provide a lowsaturation voltage regulator.
• Since the CK input has no edge detector, a high degree of
flexibility is allowed in applications.
• Variable detection voltage.
• The watchdog time can be made longer.
Package Dimensions
unit: mm
3001B-DIP8
[LA5693D]
SANYO : DIP8
1
4
8
5
3.0
3.2
0.25
7.62
6.4
3.9max
0.51min
9.4
0.89 2.54
1.4
0.5
unit: mm
3017B-SIP9
[LA5693S]
SANYO : SIP9
0.99
0.25
1.35
3.0
22.3
0.51min
5.7max
3.2
1.5
4.8
1.0
2.54
1.3
0.5
1
9
unit: mm
3032B-MFP8
[LA5693M]
SANYO : MFP8
1
8
4
5
0.645
1.270.35
5.1
0.15
1.8max
1.50.1
0.625
4.4
5.15
6.4
Specifications
Maximum Ratings
at Ta=25°C
Parameter Symbol Conditions Ratings Unit
Control pin voltage V
CONT
max 1s 60 V
Control pin voltage V
CONT
max 41 V
Control pin current I
CONT
max *VCC≥6V 11 mA
CK input voltage V
CK
max 25 V
Reset pin voltage V
RES(1)
max, 41 V
V
RES(2)
max
Allowable power dissipation Pd max LA5693D, 5693S 500 mW
LA5693M 370 mW
Operating temperature Topr –40 to +85 °C
Storage temperature Tstg –55 to +150 °C
* : A PNP transistor is connected to the LA5693D, 5693S externally to provide a low-saturation voltage regulator.
Therefore, I
CONT
≈100mA will flow, as starting current, in the VCCrange where the output cannot be regulated.
Operating Conditions at Ta=25°C
Parameter Symbol Conditions Ratings Unit
Control pin voltage V
CONT
6 to 40 V
Control pin current I
CONT
max 10 mA
Reset output current I
RES(1)
max, External R pull-up 8 mA
I
RES(2)
max
Reset detection voltage V
S
min 4 V
Operating Characteristics at Ta=25°C, V
CC
=14V, IO=50mA, unless otherwise specified.
Parameter Symbol Conditions
Ratings
min typ max
Unit
Output voltage V
O
4.8 5.0 5.2 V
Line regulation1 ∆V
OLN
1 9V≤VCC≤16V 2 10 mV
Line regulation2 ∆V
OLN
2 6V≤VCC≤40V 4 30 mV
Load regulation ∆V
OLD
1mA≤IO≤50mA 4 30 mV
Current dissipation I
CC
IO=0 4.4 6.5 mA
Output noise voltage V
NO
10Hz≤f≤100kHz, VCK=0 150 µV
Temperature coefficient ∆V
O
/∆Ta IO=5mA, –40°C≤Ta≤+85°C ±0.2 mV/°C
of output voltage
Reference voltage V
REF
1.13 1.18 1.23 V
‘H’-level CK input voltage V
IH
2 V
‘L’-level CK input voltage V
IL
0.8 V
‘H’-level CK input current I
IH
VCK=5V 0.3 0.7 mA
‘L’-level CK input current I
IL
VCK=0V –1.0 –0.1 µA
‘H’-level reset output voltage V
ORH(1)
/ RES(2) : 10kΩ pull-up 4.8 5.0 5.2 V
V
ORH(2)
‘L’-level reset output voltage1 V
ORL(1)
1/ RES(2) : 10kΩ pull-up 40 200 mV
V
ORL(2)
1
‘L’-level reset output voltage2 V
ORL(1)
2/ I
RES(1)=IRES(2)
=8mA 0.16 0.8 V
V
ORL(2)
2
CK input pulse width t
CKW
VCK=5V 3 µs
Reset output delay time t
d
Ct=1µF 7.5 10 12.5 ms
Watchdog time t
WD
Ct=1µF 30 40 50 ms
Watchdog reset time t
WR
Ct=1µF 0.1 0.25 0.4 ms
Reset hysteresis voltage Vhys V
S
=4.5V 100 200 300 mV
LA5693D, 5693S, 5693M
No.2769-2/6
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