LTC4007 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC4007' PDF : 24 Pages View PDF
LTC4007
APPLICATIONS INFORMATION
DCIN
0V TO 20V
3A
VLOGIC
LOBAT
ICL
ACP
SHDN
FAULT
CHG
FLAG
R10
100k
THERMISTOR
R11
100k
*
R12
100k *
3C4C
CHEM
LOBAT
DCIN
INFET
CLP
ICL LTC4007 CLN
ACP
TGATE
SHDN
FAULT
CHG
FLAG
R9 32.4k 1%
NTC
BGATE
PGND
CSP
BAT
PROG
RT
ITH
C7
0.47μF
GND
RT
309k
1%
TIMING RESISTOR
(~2 HOURS)
Q3
INPUT SWITCH
C1
0.1μF
C4
15nF
R1
4.99k
1%
RCL
0.033Ω
1%
C2
20μF
L1
Q1
15μH 3A
RSENSE
0.033Ω
1%
R4
3.01k
1%
Q2
D1
R5 3.01k 1%
R7
6.04k
1%
C6
0.12μF
C5
0.0047μF
R14
52.3k
1%
R6
26.7k
1%
Q4
*PIN OPEN
D1: MBRM140T3
Q1: Si4431ADY
Q2: FDC645N
Q4: 2N7002 OR BSS138
4007 F11
SYSTEM
LOAD
BAT
C3
20μF
MONITOR
(CHARGING
CURRENT
MONITOR)
Figure 11. Circuit Application (16.8V/3A) to Automatically Trickle Charge Depleted Batteries
4007fc
21
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