SANYO LA5692M, LA5692D, LA5692S Datasheet

Ordering number : EN2770B

Monolithic Linear IC

LA5692D, 5692S, 5692M

Voltage Regulator Driver

with Watchdog Timer

Overview

The LA5692 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 LA5692 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.

•Reset generation at power-ON mode.

•Reset hold output [RES (2)] (Cleared with CK reinput).

Features

•An external PNP transistor can be used to provide a lowsaturation voltage regulator.

•CK input with edge detector.

•Variable detection voltage.

•The watchdog time can be made longer.

Package Dimensions

unit: mm

3001B-DIP8

[LA5692D]

	8	5
			7.62	6.4
				0.25
	1	4
	9.4
		3.0	3.9max
		0.51min	3.2
	0.5	1.4
0.89	2.54			SANYO : DIP8

unit: mm

3017B-SIP9

[LA5692S]

	1.5	22.3	3.0
4.8	1.0	0.51 min	5.7 max

				3.2
	1		9
0.99	2.54	0.5	1.3	0.25
				1.35

SANYO : SIP9

unit: mm

3032B-MFP8

[LA5692M]

8

5

0.625

4.4

5.15

6.4

1	4	1.8max
	5.1
		1.5
		0.1
0.35	1.27	0.645

0.15

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	VCONTmax				41	V
Control pin current	ICONTmax			*VCC≥6V	11	mA
CK input voltage	VCKmax				25	V
Reset pin voltage	V				41	V
		RES(1)max,
	V
		RES(2)max
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		Conditions	Ratings	Unit
Control pin voltage	VCONT					6 to 40	V
Control pin current	ICONTmax					10	mA
Reset output current	I				External R pull-up	8	mA
			RES(1)max,
	I
		RES(2)max
Reset detection voltage	VS min					4	V

Operating Characteristics at Ta=25°C, VCC=14V, IO=50mA, unless otherwise specified.

Parameter

Symbol

Conditions

Ratings

Unit

min

typ

max

Output voltage

VO

4.8

5.0

5.2

V

Line regulation1

VOLN1

9V≤ VCC≤ 16V

2

10

mV

Line regulation2

VOLN2

6V≤ VCC≤ 40V

4

30

mV

Load regulation

VOLD

1mA≤ IO≤ 50mA

4

30

mV

Current dissipation

ICC

IO=0

4.4

6.5

mA

Output noise voltage

VNO

10Hz≤ f≤ 100kHz, VCK=0

150

µV

Temperature coefficient

VO / Ta

IO=5mA, –40°C≤ Ta≤ +85°C

±0.2

mV/°C

of output voltage

Reference voltage

VREF

1.13

1.18

1.23

V

‘H’-level CK input voltage

VIH

2

V

‘L’-level CK input voltage

VIL

0.8

V

‘H’-level CK input current

IIH

VCK=5V

0.3

0.7

mA

‘L’-level CK input current

IIL

VCK=0V

–1.0

–0.1

µA

‘H’-level reset output voltage

V

4.8

5.0

5.2

V

RES(2) : 10kΩ pull-up

ORH(1)/

V

ORH(2)

‘L’-level reset output voltage1

V

40

200

mV

RES(2) : 10kΩ pull-up

ORL(1)1/

V

ORL(2)1

‘L’-level reset output voltage2

V

I

0.16

0.8

V

ORL(1)2/

RES(1)=IRES(2)=8mA

V

ORL(2)2

CK input pulse width

tCKW

VCK=5V

3

µs

Reset output delay time

td

Ct=1µF

7.5

10

12.5

ms

Watchdog time

tWD

Ct=1µF

30

40

50

ms

Watchdog reset time

tWR

Ct=1µF

0.1

0.25

0.4

ms

Reset hysteresis voltage

Vhys

VS=4.5V

100

200

300

mV

No.2770-2/6