LTC4100 Linear Technology, LTC4100 Datasheet - Page 24

• Manufacturer Part Number: LTC4100
• Description: Smart Battery Charger Controller
• Manufacturer: Linear Technology

LTC4100
TYPICAL APPLICATIO
24
RELATED PARTS
PART NUMBER
LTC1760
LTC1960
LTC1980
LTC4006
LTC4007
LTC4008
LTC4412
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone]
DESCRIPTION
Smart Battery System Manager
Dual Battery Charger/Selector with SPI Interface
Combination Battery Charger and DC/DC Converter Input Supply Maybe Above or Below Battery Voltage, Up to 8.4V Float Voltage,
Small, High Efficiency, Fixed Voltage,
Lithium-ion Battery Charger
High Efficiency, Programmable Voltage
Battery Charger with Termination.
High Efficiency, Programmable Voltage/Current
Battery Charger
Low Loss PowerPath Controller
3V TO 5.5V
SDA
SCL
10k
FROM WALL
15V TO 20V
LTC4100 Li-Ion Battery Charger I
ADAPTER
1.21k
D4
D5
R11
10k
1%
DCIN
R6, R
0.1 F
D2
D3
0.1 F
U
10V
C1
C8, 0.082 F
10V, X7R
C6, 0.12 F
10V, X7R
C7, 0.0015 F
10V, X7R
VLIM
13.7k
R10
1%
6.04k
1%
33k
R5
www.linear.com
11
20
12
17
14
13
10
19
5
6
7
9
8
4
DCIN
DCDIV
I
GND
V
V
I
ACP
CHGEN
SMBALERT
SDA
SCL
Q1
I
INFET
TH
DC
LIM
DD
LIM
LTC4100
24
CLP
0.033
0.5W
0.1 F
R
1%
10V
C9
CL
TGATE
BGATE
PGND
LIM
V
CSP
THA
THB
CLN
BAT
SET
23
= 4A/V
R1
4.9k
COMMENTS
Autonomous Power Management and Battery Charging for Two Smart
Batteries, SMBus Rev 1.1 Compliant.
Simultaneous Charge or Discharge of 2 Batteries; DAC Programmable
Current and Voltage; Input Current Limiting Maximizes Charge Current
24-Pin SSOP Package
Constant Current/ Constant Voltage Switching Regulator with Termination
Timer; AC Adapter Current Limit and SafetySignal Sensor
in a Small 16pin Package
Complete Charger for 3- or 4-Cell Li-Ion batteries, AC Adapter
Current Limit, SafetySignal Sensor and Indicator Outputs.
Constant Current/Constant Voltage Switching Regulator; Resistor Voltage/
Current Programming, AC Adapter Current Limit and SafetySignal Sensor
Very Low Loss Replacement for Power Supply OR’ing Diodes using
Minimal External Components
1
3
2
21
22
18
16
15
D1: MBRM140T3
D2-D5: SMALL SIGNAL SCHOTTKY
Q1: 1/2 Si4825
Q2: Si4431ADY
Q3: Si3456DY
C5
0.1 F
10V
LIM
0.01 F
Q2
Q3
25V
C4
= 17.4V, Adapter Rating = 2.7A
0.5W, 1%
54.9k
R
1.13k
R
1%
1%
THB
0.025
THA
100
R
R4
SNS
D1
10 F 2
L1
10 H
4A
C4,C5
25V
C2, C3
10 F 2
25V
4100 TA02
10k
SafetySignal
BATTERY
SMART
LINEAR TECHNOLOGY CORPORATION 2002
LT/TP 0703 1K • PRINTED IN USA
sn4100 4100is