X55060 datasheet(2/23 Pages) INTERSIL

No. de pieza	X55060

Descripción Electrónicos	Dual Voltage Monitor with Integrated System Battery Switch and EEPROM

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Fabricante Electrónico	INTERSIL [Intersil Corporation]

Página de inicio	http://www.intersil.com/cda/home

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2

FN8133.0

March 28, 2005

A system battery switch circuit compares VCC (V1MON)

with VBATT input and connects VOUT to whichever is

higher. This provides voltage to external SRAM or other

circuits in the event of main power failure. The X55060

can drive 50mA from VCC and 250µA from VBATT. The

device switches to VBATT when VCC drops below the

low VCC voltage threshold and VBATT > VCC.

The Watchdog Timer provides an independent protec-

tion mechanism for microcontrollers. When the micro-

controller fails to restart a timer within a selectable

time out interval, the device activates the WDO signal.

The user selects the interval from three preset values.

Once selected, the interval does not change, even

after cycling the power.

The device’s low VCC detection circuitry protects the

user’s system from low voltage conditions, resetting the

system when VCC (V1MON) falls below the minimum

VCC trip point (VTRIP1). RESET/RESET is asserted until

VCC returns to proper operating level and stabilizes. A

second voltage monitor circuit tracks the unregulated

supply or monitors a second power supply voltage to

provide a power fail warning. Intersil’s unique circuits

allow the threshold for either voltage monitor to be

reprogrammed to meet special needs or to fine-tune the

threshold for applications requiring higher precision.

ORDERING INFORMATION

X55060

PIN CONFIGURATION

Suffix

Vtrip1

Vtrip2

Temp Range

V20-4.5A

4.6

2.6

0°C to 70°C

V20I-4.5A

-40°C to 85°C

V20-4.5

4.6

2.9

0°C to 70°C

V20I-4.5

-40°C to 85°C

V20-2.7A

2.9

1.65

0°C to 70°C

V20I-2.7A

-40°C to 85°C

V20-2.7

2.6

1.65

0°C to 70°C

V20I-2.7

-40°C to 85°C

20-Pin TSSOP

CS/WDI

SO

NC

1

2

3

4

RESET/MR

VCC (V1MON)

BATT-ON

VOUT

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

RESET

LOWLINE

V2FAIL

V2MON

WP

NC

VSS

VBATT

SCK

NC

SI

WDO

X55060

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X55060 Datasheet(PDF) 2 Page - Intersil Corporation

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