LTC4101
30
4101fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2006
LT 1109 REV A • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER DESCRIPTION COMMENTS
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Current Limit, SafetySignal Sensor and Indicator Outputs
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Control. Constant-Current Switching Regulator
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No Sense Resistor or Blocking Diode Required
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LTC4412 Low Loss PowerPath Controller Very Low Loss Replacement for Power Supply OR’ing Diodes Using
Minimal External Components
PowerPath is a trademark of Linear Technology Corporation.
LTC4101 Li-Ion Battery Charger I
LIM
= 4A/V
LIM
= 4.240V, Adapter Rating = 2.7A
5
11
20
12
17
14
13
10
6
7
8
9
1
3
21
18
16
15
C4
0.03µF
25V
C5
0.1µF
10V
0.1µF
10V
C9
0.1µF
10V
R4
100Ω
300Ω
R
THB
54.9k
1%
R
THA
1.13k
1%
R
SNS
0.025Ω
0.5W, 1%
R
CL
0.033Ω
0.5W
1%
C4,C5
10µF s2
10V
X5R
C2, C3
10µF s2
16V
X5R
SYSTEM
LOAD
SDA
SCL
Q3
Q1
Q2
100k
Q4
1/2 Si790IEDN
R11
1.21k
1%
R5
6.04k
1%
C6, 0.12µF
10V, X7R
C8, 0.068µF
10V, X7R
C7, 0.0015µF
10V, X7R
R10
6.04k
1%
C1
0.1µF
DCIN
DCIN
9V TO 12V
DCIN
FROM WALL
ADAPTER
R1
4.9k
L1
6µH
4A
424 23
D1
D1: MBRM140T3
D2-D5: SMALL SIGNAL SCHOTTKY
Q1: 1/2 Si790IEDN
Q2: FDS6685
Q3: Si7804DN
4101 TA02
SDA
SCL
10k10k
3V TO 5.5V
SafetySignal
1 CELL Li-Ion BATTERY
D2
D3
D4
D5
22
19
DCIN
DCDIV
I
DC
GND
V
DD
V
LIM
I
LIM
ACP
CHGEN
SMBALERT
SDA
SCL
INFET
TGATE
BGATE
CSP
V
SET
THA
THB
CLNCLP
LTC4101
BAT
I
TH
PGND
