Datasheet

LTC4100
30
4100fc
For more information www.linear.com/LTC4100
© LINEAR TECHNOLOGY CORPORATION 2006
LT 0214 REV C • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com/LTC4100
relaTeD parTs
Typical applicaTion
PART NUMBER DESCRIPTION COMMENTS
LTC1760 Smart Battery System Manager Autonomous Power Management and Battery Charging for Tw o Smart Batteries,
SMBus Rev 1.1 Compliant
LTC1960 Dual Battery Charger/Selector with SPI Interface Simultaneous Charge or Discharge of 2 Batteries, DAC Programmable Current
and Voltage, Input Current Limiting Maximizes Charge Current
LTC1980 Combination Battery Charger and DC/DC Converter Input Supply May be Above or Below Battery Voltage, up to 8.4V Float Voltage,
24-Pin SSOP Package
LTC4006 Small, High Efficiency, Fixed Voltage, Lithium-Ion
Battery Charger
Constant Current/Constant Voltage Switching Regulator with Termination Timer,
AC Adapter Current Limit and SafetySignal Sensor in a Small 16-Pin Package
LTC4007 High Efficiency, Programmable Voltage Battery
Charger with Termination
Complete Charger for 3- or 4-Cell Li-Ion Batteries, AC Adapter Current Limit,
SafetySignal Sensor and Indicator Outputs
LTC4008 High Efficiency, Programmable Voltage/Current
Battery Charger
Constant Current/Constant Voltage Switching Regulator; Resistor Voltage/
Current Programming, AC Adapter Current Limit and SafetySignal Sensor
LTC4101 Smart Battery Charger Controller For Smart Batteries with Voltages Below 5.5V
LTC4412 Low Loss PowerPath™ Controller Very Low Loss Replacement for Power Supply ORing Diodes Using Minimal
External Components
LTC4100 Li-Ion Battery Charger I
LIM
= 4A/V
LIM
= 17.4V, Adapter Rating = 2.7A
5
11
20
12
17
14
13
10
6
7
8
9
1
3
21
18
16
15
C4
0.01µF
25V
C5
0.1µF
10V
0.1µF
10V
C9
0.1µF
10V
R4
100Ω
300Ω
SDA
SCL
R
THB
54.9k
1%
R
THA
1.13k
1%
R
SNS
0.025Ω
0.5W, 1%
R
CL
0.033Ω
0.5W
1%
OPTIONAL
DISCHARGE
PATH TO
SYSTEM
LOAD
C4,C5
10µF × 2
25V
X5R
C2, C3
10µF × 2
25V
X5R
SYSTEM
LOAD
Q3
Q1
DCIN
DCIN
100k
Q2
Q4
D6
R11
1.21k
1%
R5
6.04k
1%
C6, 0.12µF
10V, X7R
C8, 0.068µF
10V, X7R
C7, 0.0015µF
10V, X7R
R10
13.7k
1%
C1
0.1µF
15V TO 20V
DCIN
FROM WALL
ADAPTER
R1
4.9k
L1
10µH
4A
4 24 23
D1
D1: MBRM140T3G
D2-D5: SMALL SIGNAL SCHOTTKY
D6: 18V ZENER DIODE
Q1: 1/2 Si4925BDY
Q2: FDS6685
Q3: FDC645N
Q4: 1/2 Si4925
4100 TA02
R6, R
VLIM
33k
SDA
SCL
10k10k
3V TO 5.5V
SafetySignal
D2
D3
D4
D5
4-CELL Li-Ion
SMART BATTERY
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
LTC4100
BAT
PGND
I
TH
2