LTC4007
24
4007fc
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2003
LT 0810 REV C • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
12.6V/4A Li-Ion Battery Charger
3C4C
CHEM
LOBAT
I
CL
ACP
SHDN
FAULT
CHG
FLAG
NTC
R
T
LOBAT
I
CL
ACP
SHDN
FAULT
CHG
FLAG
DCIN
INFET
CLP
CLN
TGATE
BGATE
PGND
CSP
BAT
PROG
ITH
GND
LTC4007
R9 32.4k 1%
R
RT
309k
1%
C7
0.47μF
THERMISTOR
10k
NTC
TIMING RESISTOR
(~2 HOURS)
R12
100k
*
R11
100k
R10
100k
V
LOGIC
DCIN
0V TO 20V
3A
C1
0.1μF
Q3
INPUT SWITCH
C4
15nF
Q1
Q2 D1
C2
20μF
L1
10μH 4A
R1
4.99k
1%
R4
3.01k 1%
R5 3.01k 1%
R
SENSE
0.025Ω
1%
R
CL
0.033Ω
1%
C3
20μF
BAT
CHARGING
CURRENT
MONITOR
SYSTEM
LOAD
C6
0.12μF
R7
6.04k
1%
R
PROG
26.7k
1%
C5
0.0047μF
*PIN OPEN
D1: MBRS130T3
Q1: Si4431ADY
Q2: FDC645N
4007 TA02
PART NUMBER DESCRIPTION COMMENTS
LT
®
1511 Constant-Current/Constant-Voltage 3A Battery
Charger with Input Current Limiting
High Effi ciency Current Mode PWM with 4A Internal Switch
LT1513 SEPIC Constant- or Programmable-Current/
Constant-Voltage Battery Charger
Charger Input Voltage May Be Higher, Equal to or Lower Than Battery Voltage;
Charges Any Number of Cells Up to 20V, 500kHz Switching Frequency
LT1571 1.5A Switching Charger 1- or 2-Cell Li-Ion, 500kHz or 200kHz Switching Frequency, Termination Flag
LTC1628-PG 2-Phase, Dual Synchronous Step-Down Controller Minimizes C
IN
and C
OUT
, Power Good Output, 3.5V ≤ V
IN
≤ 36V
LTC1709 2-Phase, Dual Synchronous Step-Down Controller
with VID
Up to 42A Output, Minimum C
IN
and C
OUT
, Uses Smallest Components for
Intel and AMD Processors
LTC1729
LT1769 2A Switching Battery Charger Constant-Current/Constant-Voltage Switching Regulator, Input Current
Limiting Maximizes Charge Current
LTC1778 Wide Operating Range, No R
SENSE
Synchronous
Step-Down Controller
2% to 90% Duty Cycle at 200kHz, Stable with Ceramic C
OUT
LTC1960 Dual Battery Charger/Selector with SPI Interface Simultaneous Charge or Discharge of Two Batteries, DAC Programmable
Current and Voltage, Input Current Limiting Maximizes Charge Current
LTC3711 No R
SENSE
™ Synchronous Step-Down Controller
with VID
3.5V ≤ V
IN
≤ 36V, 0.925V ≤ V
OUT
≤ 2V, for Transmeta, AMD and Intel
Mobile Processors
LTC4006 Small, High Effi ciency, Fixed Voltage, Lithium-Ion
Battery Charger
Constant-Current/Constant-Voltage Switching Regulator with Termination Timer,
AC Adapter Current Limit and Thermistor Sensor in a Small 16-Pin Package
LTC4008 High Effi ciency, Programmable Voltage/Current
Battery Charger
Constant-Current/Constant-Voltage Switching Regulator, Resistor Voltage Current
Programming, AC Adapter Current Limit and Thermistor Sensor
No R
SENSE
is a trademark of Linear Technology Corporation.
