ASM690A datasheet(9/13 Pages) ALSC

Part #	ASM690A

Description	UP Power Supply Supervisor With Battery Backup Switch

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Manufacturer	ALSC [Alliance Semiconductor Corporation]

Direct Link	https://www.alliancememory.com

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Notice: The information in this document is subject to change without notice

ASM690A / 692A

ASM802L / 802M

ASM805L

µP Power Supply Supervisor With Battery Backup Switch

rev 1.0

October 2003

Electrical Characteristics:

Unless other wise noted, VCC = 4.75V to 5.5V for the ASM690A / ASM802L / ASM805L and VCC = 4.5V to 5.5V for the ASM692A / ASM802M;

VBATT = 2.8V; and TA = TMIN to TMAX.

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

VCC, VBATT Voltage

Range (Note 1)

ASM69_AC, ASM802_C

1.1

5.5

V

ASM805LC

1.1

5.5

ASM69_AE, ASM80__E

1.1

5.5

Supply Current

Excluding IOUT

IS

ASM69_AC, ASM80__E

35

100

µA

ASM69_AC, ASM802_C

35

100

ISUPPLY in Battery

Backup Mode

(Excluding IOUT)

VCC = 0V, VBATT=2.8V

TA = 25°C

TA = TMIN to TMAX

1.0

5.0

µA

VBATT Standby

Current (Note 2)

5.5V>VCC>VBATT-0.2V

TA = 25°C

TA = TMIN to TMAX

-0.1

-1.0

0.02

µA

VOUT Output

IOUT = 5mA

VCC-

0.025

VCC-0.010

V

IOUT = 50mA

VCC-0.25

VCC-0.10

VOUT in Battery

Backup Mode

IOUT=250µA, VCC < VBATT-0.2V

VBATT-0.1

VBATT-0.001

V

Battery Switch

Threshold,

VCC to VBATT

VCC < VRT

Power Up

Power Down

20

-20

mV

Battery Switch over

Hysteresis

40

mV

Reset Threshold

VRT

ASM690A/802L/805L

4.50

4.65

4.75

V

ASM692A, ASM802M

4.25

4.40

4.50

ASM802L, TA = 25°C, VCC falling

4.55

4.70

ASM802M, TA=25°C, VCC falling

4.30

4.45

Notes:

1. If VCC or VBATT is 0V, the other must be greater than 2.0V.

2. Battery charging-current is “-”. Battery discharge current is “+”.

3. WDI is guaranteed to be in an intermediate level state if WDI is floating and VCC is within the operating voltage range. WDI

input impedance is 50 k

Ω. WDI is biased to 0.3VCC.

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