LT3651-4.1/LT3651-4.2
19
365142ff
For more information www.linear.com/LT3651-4.1
TYPICAL APPLICATIONS
6.5V to 32V 4A Charger with High Voltage Current Foldback
SHDN
ACPR
FAULT
CHRG
SW
BOOST
SENSE
BAT
I
LIM
RNG/SS
GND
NTC
CLP
R
CL
100Ω
CLN
F
C
BAT
100µF
3k
BATTERY
365142 TA02a
3.3µH
DC
IN
SBM540
R
SENSE
24mΩ
R
T
54.9k
SMAZ18
18V
200k
1N5819
LT3651
V
IN
C
IN
22µF
+
RT
TIMER
Maximum Charge Current vs DC
IN
DC
IN
(V)
5
0
MAXIMUM CHARGE CURRENT (A)
1
2
3
4
5
10
15 20 25
365142 TA02b
30 35
Maximum Charge Current vs DC
IN
12V to 32V 4A Charger with Low Voltage Current Foldback
Using the RNG/SS Pin
+
SHDN
ACPR
FAULT
CHRG
SW
BOOST
SENSE
BAT
I
LIM
RNG/SS
GND
NTC
CLP
SBM540
CLN
F
F
5.1k
68k
SMAZ9V1
9.1V
C
BAT
100µF
BATTERY
365142 TA03a
3.3µH
TO
SYSTEM
LOAD
R
SENSE
24mΩ
R
T
54.9k
DC
IN
1N5819LT3651
V
IN
C
IN
22µF
RT
TIMER
DC
IN
(V)
10
MAXIMUM CHARGE CURRENT (A)
3
4
30
365142 TA03b
2
0
15
20
25
35
5
6.5V to 32V 4A Charger with Approximately Constant Input Power
+
SHDN
ACPR
FAULT
CHRG
SW
BOOST
SENSE
BAT
I
LIM
RNG/SS
GND
NTC
CLP
R
CL
50mΩ
CLN
F
0.1µF
22k
180k
180k
20k
8.2V
C
BAT
100µF
BATTERY
365142 TA05a
3.3µH
TO
SYSTEM
LOAD
R
SENSE
24mΩ
R
T
54.9k
DC
IN
1N5819LT3651
V
IN
C
IN
22µF
6.2V
RT
TIMER
SBM540
Input Power vs DC
IN
DC
IN
(V)
5
15
INPUT POWER (W)
17
19
21
10
15
20 25
365142 TA05b
30
23
25
16
18
20
22
24
35
LT3651-4.1/LT3651-4.2
20
365142ff
For more information www.linear.com/LT3651-4.1
UHE Package
Variation: UHE36MA
36-Lead Plastic QFN (5mm × 6mm)
(Reference LTC DWG # 05-08-1753 Rev A)
5.00 ± 0.10
NOTE:
1. DRAWING IS NOT A JEDEC PACKAGE OUTLINE
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
PIN 1
TOP MARK
(SEE NOTE 6)
35
1
2
36
BOTTOM VIEW—EXPOSED PAD
4.50 REF
6.00 ± 0.10
R = 0.125
TYP
0.25 ± 0.05
2.54 ± 0.10
3.45
± 0.10
(UHE36MA) QFN 0410 REV A
0.50 BSC
3.45
± 0.10
1.52 ± 0.10
2.54 ± 0.05
1.52
± 0.05
3.45 ± 0.05 3.45 ± 0.05
0.75 ± 0.05
0.00 – 0.05
0.200 REF
RECOMMENDED SOLDER PAD LAYOUT
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
3.50 REF
0.40 ±0.10
0.70 ± 0.05
0.50 BSC
4.50 REF
3.50 REF
4.10 ± 0.05
5.50 ± 0.05
5.10 ± 0.05
6.50 ± 0.05
0.25 ± 0.05
PACKAGE
OUTLINE
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.20mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION
ON THE TOP AND BOTTOM OF PACKAGE
PIN 1 NOTCH
R = 0.30 TYP
OR 0.35 × 45°
CHAMFER
R = 0.10
TYP
0.25 ± 0.05
0.76 ± 0.05
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
LT3651-4.1/LT3651-4.2
21
365142ff
For more information www.linear.com/LT3651-4.1
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
REVISION HISTORY
REV DATE DESCRIPTION PAGE NUMBER
A 01/11 Revised Pin 34 to V
IN
in Pin Configuration, Pin Functions and Block Diagram 2, 6, 7, 8
B 03/11 Revised entire data sheet to add LT3651-4.1 1-22
C 10/12 Revised specification for Battery Float Voltage
Clarified Figure 3 Current Limit pin label
3
14
D 03/13 Clarified input voltage range
Clarified start-up functionality
1, 3, 10
12
E 04/13 Changed V
IN
to DC
IN
for Typical Application and curve
Modified V
IN
, V
BOOST
Start-Up section
Added LTC4000, removed LTC4007/8 from Related Parts section
1
12, 13
22
F 11/13 Change conditions and typical values
Change to 2V under Boost Pin 5 section
Modify A11 in Block Diagram
Overview section-change supply bias current to 100µA
Modify RT equation
Modify RNG/SS section
Modify Typical Applications circuits
3
7
9
10
12
15
19, 22

LT3651EUHE-4.1#PBF

Mfr. #:
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management Monolithic 4A High Voltage Li-Ion Battery Charger
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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