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SC1437 Datasheet(PDF) 6 Page - Semtech Corporation

Part # SC1437
Description  Precision Voltage Detector With Programmable Trigger Voltage & Timer Delay
PDF  8 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC1437 Datasheet(HTML) 6 Page - Semtech Corporation

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 2000 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
Applications Information Continued
SC1437
NO JUMPER = 80ms DELAY
JUMPER IN = INTERNAL VTRIP SELECT
R3
100
CHARGER-
1
C1
0.1uF
JP2
40ms DELAY
1
2
R2
1M
R1
576K
CHARGER+
1
JP3
0 DELAY
1
2
Q1
IRF7805
5
3
1
2
6
7
8
VBAT- 1
JP1
JUMPER OUT = ADJUSTABLE VTRIP SELECT
VBAT+ 1
U2
SC1437
1
2
3
5
4
SEL
V-
OV
V+
SENSE
R4
100
VTRIP 1
C2
0.1uF
FIGURE 3: T
FIGURE 3: T
FIGURE 3: T
FIGURE 3: T
FIGURE 3: Trip Dela
rip Dela
rip Dela
rip Dela
rip Delay se
y se
y se
y se
y set t
t t
t t
t t
t to 80mS, JP3 & JP2 Open.
o 80mS, JP3 & JP2 Open.
o 80mS, JP3 & JP2 Open.
o 80mS, JP3 & JP2 Open.
o 80mS, JP3 & JP2 Open.
Bottom Trace: VTRIP, 5V/div
Top Trace: Charger Voltage, 5V/div
Timebase: 20ms/div
FIGURE 4: T
FIGURE 4: T
FIGURE 4: T
FIGURE 4: T
FIGURE 4: Trip dela
rip dela
rip dela
rip dela
rip delay Se
y Se
y Se
y Se
y Set t
t t
t t
t t
t to 40mS, JP2 Shor
o 40mS, JP2 Shor
o 40mS, JP2 Shor
o 40mS, JP2 Shor
o 40mS, JP2 Shorttttted.
ed.
ed.
ed.
ed.
Bottom Trace: VTRIP, 5V/div
Top Trace: Charger Voltage, 5V/div
Timebase: 20ms/div
FIGURE 2



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