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参数资料
| 型号： | LTC4012IUF-2#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 633 kHz SWITCHING FREQ-MAX, PQCC20 |
| 封装： | 4 X 4 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, MO-220WGGD-1, QFN-20 |
| 文件页数： | 21/28页 |
| 文件大小： | 381K |
| 代理商： | LTC4012IUF-2#TRPBF |
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LTC4012/
LTC4012-1/LTC4012-2
4012fa
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
LINEAR TECHNOLOGY CORPORATION 2009
LT 0610 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
LTC4411
2.6A Low Loss Ideal Diode
No External MOSFET, Automatic Switching Between DC sources, 140mΩ
On Resistance in ThinSOTTM 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
0.1F
R8
5.1k
R14
100k
Q5
R15
0*
D1
7
4
2
3
1
20
19
18
D3
17
16
21
15
14
11
10
Q1
9
R12
294k
C10
10pF
5
8
12
13
6
R7
25m
R9 3.01k
C5
0.1F
C6
2F
Q2
Q3
D4
L1
4.7H
R11
25m
12.6V
Li-Ion
BATTERY
DCIN
CHRG
C2
0.1F
R1
3k
R
R4
6.04k
R5
26.7k
R6
53.6k
LTC4012
ACP
ICL
SHDN
ITH
PROG
CLN
BOOST
INFET
TGATE
SW
INTVDD
BGATE
TO/FROM
MCU
GND
CSP
CSN
BAT
FBDIV
VFB
C8
10F
POWER TO SYSTEM
TO POWER SYSTEM LOAD
WHEN ADAPTER IS NOT
PRESENT, USE
SCHOTTKY DIODE D5 OR
THE COMBINATION OF R14,
D6 AND Q4
D6
18V
ZENER
C1
0.1F
C3
4.7nF
C9
10F
R10 3.01k
R13
31.2k
4012 TA03
D3: CMDSH-3
D4: MBR230LSFT1
Q1: 2N7002
Q2, Q3: Si7212DN OR SiA914DJ
OR Si4816BDY (OMIT D4)
Q4, Q5: Si7423DN
L1: 1HLP-2525CZER4R7M11
*: SEE TGATE BOOST SUPPLY IN
APPLICATIONS INFORMATION
+
D5
Q4
OR
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