LTC4006_15 Datasheet, PDF (20/20 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
Q3
INPUT SWITCH
C1
R1
0.1µF
5k
1
16
DCIN
INFET
C4
2
LTC4006
11
15nF
CHG
CLP
3
12
ACP/SHDN CLN
8
I_MON
6
NTC
13
TGATE
15
BGATE
4
R_T
7
I_TH
5
GND
14
PGND
9
CSP
10
BAT
D1: MBRM140T3
Q1, Q2: Si7501DN
Q3: Si5435B
R_CL
0.04Ω
Q1
TO SYSTEM LOAD
C2
20µF _L1
R_SENSE
22µH 2A _0.05Ω
Q2
D1
BATTERY
C3
20µF
4006 TA02
RELATED PARTS
PART NUMBER DESCRIPTION
LT1511
3A Constant-Current/Constant-Voltage Battery Charger
LT1513
LTC1709
LTC1760/
LTC1960
LTC1778
LTC3711
LTC3728
LTC4002
SEPIC Constant- or Programmable-Current/Constant-
Voltage Battery Charger
2-Phase, Dual Synchronous Step-Down Controller
with VID
Dual Battery Charger/Selector
Wide Operating Range, No R_SENSE^TM Synchronous
Step-Down Controller
No R_SENSE Synchronous Step-Down Controller
with VID
2-Phase, Dual Synchronous Step-Down Controller
Li-Ion Battery Charger Controller
LTC4007
LTC4008
High Efficiency, Programmable Voltage,
Battery Charger with Termination
High Efficiency, Programmable Voltage/Current
Battery Charger
LTC4100
Smart Battery Charger Controller
LTC4412
PowerPath^TM Ideal Diode or Controller
No R_SENSE and PowerPath are trademarks 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
Up to 42A Output, Minimum C_IN and C_OUT, Uses Smallest Components for
Intel and AMD Processors
Simultaneous Charge or Discharge of Two Batteries, DAC Programmable
Current and Voltage, Input Current Limiting Maximizes Charge Current
2% to 90% Duty Cycle at 200kHz, Stable with Ceramic C_OUT
3.5V ≤ V_IN ≤ 36V, 0.925V ≤ V_OUT ≤ 2V, for Transmeta, AMD and Intel
Mobile Processors
Minimizes C_IN and C_OUT, Power Good Output, 3.5V ≤ V_IN ≤ 36V
1- and 2-Cell Li-Ion Batteries, V_IN ≤ 22V, 500kHz Switching Frequency,
3hr Charge Termination, I_OUT ≤ 4A
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
SMBus (Rev 1.1) Compliant, 6.4V ≤ V_IN ≤ 26V, SMBus Accelerator Minimizes
Bus Errors
Very Low Loss Replacement for OR’ing Diodes
20 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
4006fa
LT 0506 REV A • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2003