LTC4012CUF-3#PBF Linear Technology, LTC4012CUF-3#PBF Datasheet - Page 28

• Manufacturer Part Number: LTC4012CUF-3#PBF
• Description: IC BATT CHRGR MC HI-EFF 20-QFN
• Manufacturer: Linear Technology

Specifications of LTC4012CUF-3#PBF

• Function: Charge Management
• Battery Type: Multi-Chemistry
• Voltage - Supply: 6 V ~ 28 V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-WFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LTC4012-3
Typical applicaTion
PART NUMBER
LTC4006
LTC4007
LTC4008/LTC4008-1
LTC4009/LTC4009-1
LTC4009-2
LTC4012/LTC4012-1
LTC4012-2
LTC4060
LTC4411
LTC4412/LTC4412HV Low Loss PowerPath Controllers
LTC4413
LTC4414
LTC4416

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