28
40123fb
LTC4012-3
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2009
LT 0610 REV B • PRINTED IN USA
relaTeD parTs
PART NUMBER DESCRIPTION COMMENTS
LTC4006 Small, High Efficiency, Fixed Voltage, Lithium-Ion
Battery Chargers with Termination
Complete Charger for 3- or 4-Cell Li-Ion Batteries, AC Adapter Current
Limit and Thermistor Sensor, 16-pin SSOP Package
LTC4007 High Efficiency, Programmable Voltage, Lithium-Ion
Battery Charger with Termination
Complete Charger for 3- or 4-Cell Li-Ion Batteries, AC Adapter Current
Limit, Thermistor Sensor and Indicator Outputs
LTC4008/LTC4008-1 High Efficiency, Programmable Voltage/Current Battery
Chargers
Constant-Current/Constant-Voltage Switching Regulator, Resistor
Voltage/Current Programming, Thermistor Sensor and Indicator
Outputs, AC Adapter Current Limit (Omitted on 4008-1)
LTC4009/LTC4009-1
LTC4009-2
High Efficiency, Multichemistry Battery Charger Constant-Current/Constant-Voltage Switching Regulator in a 20-Lead
QFN Package, AC Adapter Current Limit, Indicator Outputs
LTC4012/LTC4012-1
LTC4012-2
High Efficiency, Multi Chemistry Battery Chargers with
PowerPath Control
Constant-Current/Constant-Voltage Switching Regulator in a 20-Lead
QFN Package, AC Adaptor Current Limit PFET Input Ideal Diode Control,
3 Indicator Outputs
LTC4060 Standalone Linear NiMH/NiCd Fast Charger Complete NiMH/NiCd Charger in a Small 16-Pin Package, No Sense
Resistor or Blocking Diode Required
LTC4411 2.6A Low Loss Idea Diode No External MOSFET, Automatic Switching Between DC sources, 140mΩ
On Resistance in ThinSOT
TM
package
LTC4412/LTC4412HV Low Loss PowerPath Controllers Very Low Loss Replacement for Power Supply ORing Diodes Using
Minimal External Complements, Operates up to 28V (36V for HV)
LTC4413 Dual 2.6A, 2.5V to 5.5V Ideal Diodes Low Loss Replacement for ORing Diodes, 100mΩ On Resistance
LTC4414 36V, Low Loss PowerPath Controller for Large PFETs Low Loss Replacement for ORing Diodes, Operates up to 36V
LTC4416 Dual Low Loss PowerPath Controllers Low Loss Replacement for ORing Diodes, Operates up to 36V, Drives
Large PFETs, Programmable, Autonomous Switching
Typical applicaTion
12.6V 4 Amp Charger
CLP
FROM
ADAPTER
15V AT 4A
BULK
CHARGE
C4
0.1µF
R8
5.1k
R14
100k
Q5
R15
0Ω*
D1
7
4
5
2
3
1
20
19
18
D3
17
16
21
15
14
11
10
Q1
9
R12
294k
C10
10pF
8
12
13
6
R7
25mΩ
R9 3.01k
C5
0.1µF
C6
2µF
Q2
Q3
D4
L1
4.7µH
R11
25mΩ
12.6V
Li-Ion
BATTERY
DCIN
CHRG
C2
0.1µF
R1
3k
R
R4
6.04k
R2
10k
R5
26.7k
R6
53.6k
LTC4012-3
ICL
SHDN
ITH
PROG
CLN
BOOST
GND
INFET
TGATE
SW
INTV
DD
BGATE
TO/FROM
MCU
GND
CSP
CSN
BAT
FBDIV
V
FB
C8
10µF
POWER TO SYSTEM
TO POWER SYSTEM LOAD
WHEN ADAPTER IS NOT
PRESENT, USE
SCHOTTKY DIODE D5 OR
THE COMBINATION OF R14, R2
D6 AND Q4
D6
18V
ZENER
C1
0.1µF
C3
4.7nF
C9
10µF
R10 3.01k
R13
31.2k
40123 TA03
D3: CMDSH-3
D4: MBR230LSFT1
Q1: 2N7002
Q2, Q3: Si7218DN
Q4, Q5: Si7423DN
L1: 1HLP-2525CZER4R7M11
*: SEE TGATE BOOST SUPPLY IN
APPLICATIONS INFORMATION
+
D5
Q4
OR
