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LT1571 Datasheet(PDF) 6 Page - Linear Technology

Part # LT1571
Description  Constant-Current/ Constant-Voltage Battery Charger with Preset Voltage and Termination Flag
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1571 Datasheet(HTML) 6 Page - Linear Technology

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6
LT1571 Series
–
+
–
+
–
+
BAT
0.2V
1.5V
VBAT
VC
GND
SLOPE
COMPENSATION
R2
R3
C1
PWM
B1
CA2
–
+
–
+
CA1
–
+
A11
VA
+
80mV
+
+
4V
VREF
2.465V
VREF
SHUTDOWN
200kHz/500kHz
OSCILLATOR
S
R
R
R1
1k
R7
R6
11k
R5
2k
R4
RS1
IBAT
IBAT
VBAT
IPROG
IVA
VCC
VCC
VC
BOOST
+VIN
SW
C1
L1
D2
D1
SENSE
BAT
BATTERY
BAT2
(LT1571-2,
LT1571-5
ONLY)
VFB
(LT1571-1
ONLY)
SELECT
(LT1571-2,
LT1571-5
ONLY)
1571 BD
PROG
CAP
FLAG
RPROG
CPROG
IPROG
75k
IPROG
IBAT
= 500
µA/A
QSW
E6
+
IVA
4
NOTES: LT1571-2: R4 = 7.1k, R7 = 30.24k
LT1571-5: R4 = 3.33k, R7 = 8.62k
LT1571-1: 200kHz, VFB PIN FOR ADJUSTABLE
BATTERY VOLTAGE (VFB PIN IS NOT INTERNALLY
CONNECTED TO THE RESISTORS)
LT1571-2: 200kHz, PRESET 8.2V CELL
(SELECT PIN OPEN) OR 8.4V (SELECT PIN GROUNDED)
LT1571-5: 500KHz, PRESET 4.1V CELL
(SEECT PIN OPEN) OR 4.2V (SELECT PIN GROUNDED)
I
V
R
BAT
PROG
= 


2 465
2000
.
•
BLOCK DIAGRA



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