LTC4012IUF#PBF Linear Technology, LTC4012IUF#PBF Datasheet - Page 28

• Manufacturer Part Number: LTC4012IUF#PBF
• Description: IC BATT CHRGR MC HI-EFF 20-QFN
• Manufacturer: Linear Technology

Specifications of LTC4012IUF#PBF

• Function: Charge Management
• Battery Type: Multi-Chemistry
• Voltage - Supply: 6 V ~ 28 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 20-WFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LTC4012/
LTC4012-1/LTC4012-2

typical application
relateD parts
PART NUMBER
LTC4006
LTC4007
LTC4008/LTC4008-1
LTC4009/LTC4009-1
LTC4009-2
LTC4411
LTC4412/LTC4412HV Low Loss PowerPath Controllers
LTC4413
LTC4414
LTC4416
15V AT 4A
ADAPTER
FROM
CHARGE
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
BULK
C1
0.1µF
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
Chargers
High Efficiency, Multichemistry Battery Charger
2.6A Low Loss Ideal Diode
Dual 2.6A, 2.5V to 5.5V Ideal Diodes
36V, Low Loss PowerPath Controller for Large PFETs
Dual Low Loss PowerPath Controllers
Q1
R5
26.7k
●
TO/FROM
FAX: [phone]
D1
R6
53.6k
MCU
R1
3k
R4
6.04k
C2
0.1µF
C3
4.7nF
R
12
13
7
4
5
8
6
CHRG
DCIN
ACP
ICL
SHDN
ITH
PROG
LTC4012
●
www.linear.com
INTV
BOOST
TGATE
BGATE
FBDIV
INFET
GND
CSN
CLP
CLN
CSP
BAT
SW
V
DD
FB
20
19
18
17
16
21
15
14
11
10
3
2
1
9
12.6V 4 Amp Charger
R15
0 *
Q5
R12
294k
R13
31.2k
0.1µF
D3
C4
C6
2µF
R10 3.01k
R9 3.01k
C5
0.1µF
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
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
25m
5.1k
C10
10pF
R7
R8
Q2
Q3
C9
10µF
D4
C8
10µF
+
R11
25m
L1
4.7µH
4012 TA03
12.6V
Li-Ion
BATTERY
D5
TM
package
THE COMBINATION OF R14,
TO POWER SYSTEM LOAD
OR
SCHOTTKY DIODE D5 OR
POWER TO SYSTEM
WHEN ADAPTER IS NOT
 LINEAR TECHNOLOGY CORPORATION 2009
D3: CMDSH-3
D4: MBR230LSFT1
Q1: 2N7002
Q2, Q3: Si7212DN OR SiA914DJ
Q4, Q5: Si7423DN
L1: 1HLP-2525CZER4R7M11
PRESENT, USE
*: SEE TGATE BOOST SUPPLY IN
100k
D6 AND Q4
R14
APPLICATIONS INFORMATION
OR Si4816BDY (OMIT D4)
D6
18V
ZENER
LT 0610 • PRINTED IN USA
Q4
4012fa