LTC4100EGPBF LINER [Linear Technology], LTC4100EGPBF Datasheet - Page 30

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LTC4100EGPBF

Manufacturer Part Number
LTC4100EGPBF
Description
Smart Battery Charger Controller
Manufacturer
LINER [Linear Technology]
Datasheet
LTC4100
TYPICAL APPLICATION
RELATED PARTS
PART NUMBER
LTC1760
LTC1960
LTC1980
LTC4006
LTC4007
LTC4008
LTC4101
LTC4412
PowerPath is a trademark of Linear Technology Corporation.
30
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
DESCRIPTION
Smart Battery System Manager
Dual Battery Charger/Selector with SPI Interface
Combination Battery Charger and DC/DC Converter Input Supply May be Above or Below Battery Voltage, up to 8.4V Float Voltage,
Small, High Effi ciency, Fixed Voltage, Lithium-Ion
Battery Charger
High Effi ciency, Programmable Voltage Battery
Charger with Termination
High Effi ciency, Programmable Voltage/Current
Battery Charger
Smart Battery Charger Controller
Low Loss PowerPath™ Controller
3V TO 5.5V
SDA
SCL
FAX: (408) 434-0507
10k
FROM WALL
15V TO 20V
LTC4100 Li-Ion Battery Charger I
ADAPTER
1.21k
D4
D5
R11
10k
1%
DCIN
R6, R
0.1μF
D2
D3
0.1μF
10V
C1
C8, 0.068μF
10V, X7R
C7, 0.0015μF
10V, X7R
C6, 0.12μF
10V, X7R
VLIM
13.7k
R10
1%
6.04k
1%
33k
R5
www.linear.com
DCIN
11
20
12
17
14
13
10
19
5
6
7
8
9
4
DCIN
DCDIV
I
I
GND
V
V
I
ACP
CHGEN
SMBALERT
SDA
SCL
Q1
INFET
TH
DC
LIM
DD
LIM
LTC4100
24
CLP
0.033Ω
0.5W
0.1μF
R
1%
10V
C9
CL
BGATE
TGATE
PGND
4100 TA02
V
CLN
CSP
BAT
THA
THB
LIM
SET
23
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 16-Pin 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
For Smart Batteries with Voltages Below 5.5V
Very Low Loss Replacement for Power Supply OR’ing Diodes Using Minimal
External Components
1
3
2
21
22
18
16
15
= 4A/V
D1: MBRM140T3G
D2-D5: SMALL SIGNAL SCHOTTKY
D6: 18V ZENER DIODE
Q1: 1/2 Si4925BDY
Q2: FDS6685
Q3: FDC645N
Q4: 1/2 Si4925
C5
0.1μF
10V
0.01μF
LIM
Q2
Q3
25V
C4
1.13k
54.9k
0.5W, 1%
R
R
1%
1%
= 17.4V, Adapter Rating = 2.7A
THB
THA
0.025Ω
100Ω
R
R4
SNS
D1
L1
10μH
4A
10μF 2
C4,C5
25V
X5R
SafetySignal
DCIN
C2, C3
10μF 2
25V
X5R
100k
SMART BATTERY
4-CELL Li-Ion
300Ω
D6
© LINEAR TECHNOLOGY CORPORATION 2006
Q4
OPTIONAL
DISCHARGE
PATH TO
SYSTEM
LOAD
SYSTEM
LOAD
SDA
SCL
LT 1109 REV B • PRINTED IN USA
4100fb

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