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X55060 Datasheet(PDF) 2 Page - Intersil Corporation

Part No. X55060
Description  Dual Voltage Monitor with Integrated System Battery Switch and EEPROM
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Maker  INTERSIL [Intersil Corporation]
Homepage  http://www.intersil.com/cda/home
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X55060 Datasheet(HTML) 2 Page - Intersil Corporation

 
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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
NC
SI
WDO
X55060


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