|
Sanyo |
Ordering number : EN2770B
Monolithic Linear IC
LA5692D, 5692S, 5692M
Voltage Regulator Driver
with Watchdog Timer
Overview
Package Dimensions
The LA5692 is a single-chip voltage regulator for unit: mm
microcomputer system monitor use that performs the 3001B-DIP8
functions of 5V output voltage control, watchdog timer,
and voltage detector. Since the LA5692 can hold the reset
output, it is especially suited for use in peripheral control
[LA5692D]
85
and monitor output applications (example : valves used in
refrigeration equipment, hot water supply system).
Applications
14
9.4
• Microcomputer system for car equipment, refrigeration/
heating equipment, office automation equipment.
Functions
• Output voltage 5V control.
• Watchdog timer.
0.5 1.4
0.89 2.54
unit: mm
3017B-SIP9
• Reset generation at power-ON mode.
• Reset hold output [RES (2)] (Cleared with CK reinput).
Features
[LA5692S]
22.3
1.5
• An external PNP transistor can be used to provide a low-
saturation voltage regulator.
• CK input with edge detector.
• Variable detection voltage.
1
0.99 2.54
0.5
9
1.3
• The watchdog time can be made longer.
unit: mm
3032B-MFP8
[LA5692M]
85
SANYO : DIP8
3.0
0.25
1.35
SANYO : SIP9
14
5.1
0.15
0.35 1.27 0.645
SANYO : MFP8
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
D0597HA (KT)/8099YT/8037TA, TS No.2770-1/6
LA5692D, 5692S, 5692M
Specifications
Maximum Ratings at Ta=25°C
Parameter
Symbol
Conditions
Ratings
Unit
Control pin voltage
VCONTmax 1s
60 V
Control pin voltage
Control pin current
VCONTmax
ICONTmax *VCC≥6V
41 V
11 mA
CK input voltage
VCKmax
25 V
Reset pin voltage
VRES(1)max,
VRES(2)max
41 V
Allowable power dissipation Pd max
LA5692D, 5692S
500 mW
LA5692M
370 mW
Operating temperature
Topr
–40 to +85 °C
Storage temperature
Tstg
–55 to +150 °C
* : A PNP transistor is connected to the LA5692D, 5692S externally to provide a low-saturation voltage regulator.
Therefore, ICONT≈100mA will flow, as starting current, in the VCC range where the output cannot be regulated.
Operating Conditions at Ta=25°C
Parameter
Symbol
Control pin voltage
Control pin current
VCONT
ICONTmax
Reset output current
Reset detection voltage
IRES(1)max,
IRES(2)max
VS min
Conditions
External R pull-up
Ratings
6 to 40
10
8
Unit
V
mA
mA
4V
Operating Characteristics at Ta=25°C, VCC=14V, IO=50mA, unless otherwise specified.
Parameter
Symbol
Conditions
Ratings
min typ max
Output voltage
Line regulation1
Line regulation2
Load regulation
Current dissipation
Output noise voltage
Temperature coefficient
VO
∆VOLN1
∆VOLN2
∆VOLD
ICC
VNO
∆VO /∆Ta
9V≤VCC≤16V
6V≤VCC≤40V
1mA≤IO≤50mA
IO=0
10Hz≤f≤100kHz, VCK=0
IO=5mA, –40°C≤Ta≤+85°C
4.8 5.0
2
4
4
4.4
150
±0.2
5.2
10
30
30
6.5
of output voltage
Reference voltage
VREF
1.13 1.18 1.23
‘H’-level CK input voltage
‘L’-level CK input voltage
‘H’-level CK input current
VIH
VIL
IIH
VCK=5V
2
0.8
0.3 0.7
‘L’-level CK input current
IIL
‘H’-level reset output voltage VORH(1)/
VCK=0V
RES(2) : 10kΩ pull-up
–1.0 –0.1
4.8 5.0
5.2
VORH(2)
‘L’-level reset output voltage1 VORL(1)1/
RES(2) : 10kΩ pull-up
40 200
VORL(2)1
‘L’-level reset output voltage2 VORL(1)2/
VORL(2)2
IRES(1)=IRES(2)=8mA
0.16 0.8
CK input pulse width
Reset output delay time
tCKW
td
VCK=5V
Ct=1µF
3
7.5 10 12.5
Watchdog time
Watchdog reset time
tWD
tWR
Ct=1µF
Ct=1µF
30 40
0.1 0.25
50
0.4
Reset hysteresis voltage
Vhys
VS=4.5V
100 200 300
Unit
V
mV
mV
mV
mA
µV
mV/°C
V
V
V
mA
µA
V
mV
V
µs
ms
ms
ms
mV
No.2770-2/6
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