LTC4006 Datasheet, PDF (16/16 Pages) Linear Technology – 4A, High Efficiency, Standalone Li-Ion Battery Charger

LTC4006
TYPICAL APPLICATIO
DCIN
0V TO 20V
2.5A
V_LOGIC
CHG
ACP
CHARGING
CURRENT MONITOR
R3
100k
R9 32.4k
THERMISTOR
10k
NTC
C5
0.0047µF
C7
0.47µF
R_T
309k
TIMING
RESISTOR
(~2 HOURS)
R4
6.04k
C6
0.12µF
2A Li-Ion Battery Charger
C1
0.1µF
DCIN
INFET
LTC4006
CHG
CLP
ACP/SHDN CLN
I_MON
NTC
TGATE
BGATE
R_T
PGND
I_TH
CSP
GND
BAT
Q3
INPUT SWITCH
R1
5k
C4
15nF
D1: MBRM140T3
Q1, Q3: Si3457
Q2: Si3454
R_CL
0.04Ω
Q1
TO LOAD
C2
20µF _L1
22µH 2A
R_SENSE
0.05Ω
Q2
D1
BATTERY
C3
20µF
4006 TA02
RELATED PARTS
PART NUMBER DESCRIPTION
LT^®1511
3A Constant-Current/Constant-Voltage Battery Charger
LT1513
LT1571
LTC1628-PG
LTC1709
LTC1729
Sepic Constant- or Programmable- Current/Constant-
Voltage Battery Charger
1.5A Switching Charger
2-Phase, Dual Synchronous Step-Down Controller
2-Phase, Dual Synchronous Step-Down Controller
with VID
Li-Ion Battery Charger Termination Controller
LT1769
2A Switching Battery Charger
LTC1778
LTC1960
Wide Operating Range, No R_SENSE^TM Synchronous
Step-Down Controller
Dual Battery Charger/Selector with SPI Interface
LTC3711
LTC4007
LTC4008
No R_SENSE Synchronous Step-Down Controller
with VID
High Efficiency, Programmable Voltage,
Battery Charger with Termination
High Efficiency, Programmable Voltage/Current
Battery Charger
No R_SENSE is a trademark of Linear Technology Corporation.
COMMENTS
High Efficiency, Minimum External Components to Fast Charge Lithium,
NIMH and NiCd Batteries
Charger Input Voltage May be Higher, Equal to or Lower Than Battery Voltage,
500kHz Switching Frequency
1- or 2-Cell Li-Ion, 500kHz or 200kHz Switching Frequency, Termination Flag
Minimizes C_IN and C_OUT, Power Good Output, 3.5V ≤ V_IN ≤ 36V
Up to 42A Output, Minimum C_IN and C_OUT, Uses Smallest Components for
Intel and AMD Processors
Trickle Charge Preconditioning, Temperature Charge Qualification, Time or
Charge Current Termination, Automatic Charger and Battery Detection, and
Status Output
Constant-Current/Constant-Voltage Switching Regulator, Input Current
Limiting Maximizes Charge Current
2% to 90% Duty Cycle at 200kHz, Stable with Ceramic C_OUT
Simultaneous Charge or Discharge of Two Batteries, DAC Programmable
Current and Voltage, Input Current Limiting Maximizes Charge Current
3.5V ≤ V_IN ≤ 36V, 0.925V ≤ V_OUT ≤ 2V, for Transmeta, AMD and Intel
Mobile Processors
Complete Charger for 3- or 4-Cell Li-Ion Batteries, AC Adapter
Current Limit, Thermistor Sensor and Indicator Outputs
Constant-Current/Constant-Voltage Switching Regulator, Resistor Voltage/
Current Programming, AC Adapter Current Limit and Thermistor Sensor and
Indicator Outputs
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^q FAX: [phone] ^q www.linear.com
sn4006 4006is
LT/TP 0503 1K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2003