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CS8151C Datasheet(PDF) 3 Page - Cherry Semiconductor Corporation

Part No. CS8151C
Description  5V, 100mA Low Dropout Linear Regulator with Watchdog, RESET, & Wake Up
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Maker  CHERRY [Cherry Semiconductor Corporation]
Homepage  http://www.cherrycorp.com/
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CS8151C Datasheet(HTML) 3 Page - Cherry Semiconductor Corporation

   
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Package Lead Description
Package Lead #
Lead Symbol
Function
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
s Watchdog Input
Threshold
HIGH
1.4
2.0
V
LOW
0.8
1.3
V
Hysteresis
25
100
mV
Input Current
0 < WDI < 6V
-10
0
+10
µA
Pulse Width
50% WDI falling edge to
5
µs
50% WDI rising edge and
50% WDI rising edge to 50%
WDI falling edge (see Figure 1)
s Wake Up Output
Wake Up Period
see Figure 1a
30
40
50
ms
Wake Up Duty Cycle nominal
see Figure 1c
40
50
60
%
HIGH to Wake Up
50%
rising edge to
15
20
25
ms
Rising Delay Time
50% Wake Up edge
(see Figure 1)
Wake Up Response
50% WDI falling edge to
2
10
µs
to Watchdog Input
50% Wake Up falling edge
Wake Up Response
50%
falling edge to
2
10
µs
to
50% Wake Up falling edge
VOUT = 5V®4.5V
Output
LOW
IOUT = 25µA(sinking)
0.2
0.8
V
HIGH
IOUT = 25µA(sourcing)
3.8
4.2
5.1
V
Current Limit
Wake Up = 5V
0.025
1.00
7.00
mA
Wake Up = 0V
.05
3.50
mA
RESET
RESET
RESET
RESET
8 L PDIP
1VIN
Supply voltage to the IC.
2
WDI
CMOS/TTL compatible input lead. The watchdog function monitors
the falling edge of the incoming signal.
3
Wake Up
CMOS/TTL compatible output consisting of a continuously generated
signal used to Wake Up the microprocessor from sleep mode.
4
CMOS/TTL compatible output lead
goes low whenever VOUT
drops by more than 6% from nominal, or during the absence of a cor-
rect watchdog signal.
5
Delay
Input lead from timing capacitor for
and Wake Up signal.
7
Gnd
Ground Connection
8VOUT
Regulated output voltage 5V ± 2%.
RESET
RESET
RESET
3
Electrical Characteristics: TA = 0¡C to 70¡C, 0¡C ² TJ ² 125¡C, 6V ² VIN ² 26V, IOUT = 100µA to 100mA,
C2 = 47µF (ESR < 8½), CDelay = 0.1µF (unless otherwise noted)


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