ASM805LCSA datasheet(4/12 Pages) ONSEMI

Part #	ASM805LCSA

Description	Power Supply Supervisor

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Manufacturer	ONSEMI [ON Semiconductor]

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ASM690A/692A, ASM802L/802M, ASM805L

http://onsemi.com

4

Table 3. ELECTRICAL CHARACTERISTICS (Unless otherwise noted, VCC = 4.75 V to 5.5 V for the ASM690A / ASM802L /

ASM805L and VCC = 4.5 V to 5.5 V for the ASM692A / ASM802M; VBATT = 2.8 V; and TA = TMIN to TMAX.) (continued)

Parameter

Unit

Max

Typ

Min

Conditions

Symbol

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

Reset Threshold

Hysteresis

40

mV

Reset Pulse Width

tRS

140

200

280

ms

Reset Output

Voltage

ISOURCE = 800 mA

VCC − 1.5

V

ISINK = 3.2 mA

0.4

ASM69_AC, ASM802_C, VCC = 1.0 V, ISINK = 50 mA

0.3

ASM69_AE, ASM802_E, VCC = 1.2 V, ISINK = 100 mA

0.3

ASM805LC, ISOURCE = 4 mA, VCC = 1.1 V

0.8

ASM805LE, ISOURCE = 4 mA, VCC = 1.2 V

0.9

ASM805L, ISOURCE = 800 mA

VCC − 1.5

ASM805L, ISINK = 3.2 mA

0.4

Watchdog Timeout

tWD

1.00

1.60

2.25

sec

WDI Pulse Width

tWP

VIL = 0.4 V, VIH = 0.8 VCC

50

ns

WDI Input Current

WDI = VCC

50

150

mA

WDI = 0 V

−150

−50

WDI Input Threshold

(Note 4)

VCC = 5 V, Logic LOW

0.8

V

VCC = 5 V, Logic HIGH

3.5

PFI Input Threshold

ASM69_A, ASM805L, VCC = 5 V

1.20

1.25

1.30

V

ASM802_C/E, VCC = 5 V

1.225

1.250

1.275

PFI Input Current

−25

0.01

25

nA

PFO Output Voltage

ISOURCE = 800 mA

VCC − 1.5

V

ISINK = 3.2 mA

0.4

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

3. Battery charging−current is “−”. Battery discharge current is “+”.

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

NOTE: WDI input impedance is 50 kW. WDI is biased to 0.3 VCC.

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