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LTC3553EUD-2#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36
LTC3553-2
34
35532f
TYPICAL APPLICATIONS
3-Cell Alkaline/Lithium With PowerPath (Charger Disabled)
V
BUS
NTC
PROG
HPWR
SUSP
PGOOD
STBY
BUCK_ON
PBSTAT
ON
V
OUT
CHRG
BAT
BVIN
V
INLDO
LDO
LDO_FB
SW
BUCK_FB
GND
3 CELL
ALKALINE
OR LITHIUM
C1
10µF
20
U1
U2
16
1
19
2
6
7
3
4
PB1
8
13
9
10
12
11
17
18
1415
R
PROG
10k
C4
4.7µF
C2
2.2µF
R
UP1
1M
R
UP2
590k
R
LO1
464k
2.5V
C5
10pF
R4
100k
R3
100k
C6
10µF
R
LO2
464k
1.8V
L1
10µH
SYSTEM LOAD
4.35V TO 5.5V
USB INPUT
LTC3553-2
I/O
CORE
PBSTAT
PGOOD
STBY
EN
SUSP
HPWR
35532 TA04
μC
R5
100k
+
C3
10µF
LTC3553-2
35
35532f
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibilit y is assumed for its use. Linear Technology Corporation makes no represent a-
t i o n t h a t t h e i n t e r c o n n e c t i o n o f i t s c i r c u i t s a s d e s c r i b e d h e r e i n w i l l n o t i n f r i n g e o n e x i s t i n g p a t e n t r i g h t s .
UD Package
20-Lead Plastic QFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1720 Rev A)
3.00 ± 0.10
(4 SIDES)
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
1.65 ± 0.05
NOTE:
1. DRAWING IS NOT A JEDEC PACKAGE OUTLINE
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm 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
TOP MARK
(NOTE 6)
0.40 ± 0.10
BOTTOM VIEW—EXPOSED PAD
1.65 ± 0.10
(4-SIDES)
0.75 ± 0.05
R = 0.115
TYP
R = 0.05
TYP
0.20 ± 0.05
1
PIN 1 NOTCH
R = 0.20 TYP
OR 0.25 × 45°
CHAMFER
19 20
2
0.40 BSC
0.200 REF
2.10 ± 0.05
3.50 ± 0.05
(4 SIDES)
0.70 ±0.05
0.00 – 0.05
(UD20) QFN 0306 REV A
0.20 ±0.05
0.40 BSC
PACKAGE
OUTLINE
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
LTC3553-2
36
35532f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2012
LT 0112 • PRINTED IN USA
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Buck Output: 0.8V to V
BAT
, Buck Input V
IN
: 2.7V to 5.5V, 3mm × 3mm DFN-10 Package
USB PowerPath With Li-Ion Battery (NTC Qualifi ed Charging),
and LDO Regulator Driven by Buck Regulator
TYPICAL APPLICATION
V
BUS
NTC
PROG
HPWR
SUSP
BUCK_ON
PGOOD
STBY
PBSTAT
ON
V
OUT
CHRG
BAT
BVIN
SW
BUCK_FB
V
INLDO
LDO
LDO_FB
GND
Li-Ion
BATTERY
C1
10µF
C7
10µF
R3
R1
100k
20
16
1
19
7
2
6
3
4
PB1
9
10
11
8
13
12
17
18
1415
R
PROG
1.87k
T
C4
10µF
C2
2.2µF
R
UP1
R
UP2
2.05M
R
LO1
649k
3.3V
LDO
1.8V
C3
10pF
C6
4.7µF
332k
R
LO2
649k
1.2V
C5
2.2µF
L1 4.7µH
SYSTEM LOAD
4.35V TO 5.5V
USB INPUT
LTC3553-2
I/O
CORE
PBSTAT
PGOOD
STBY
BUCK_ON
SUSP
HPWR
35532 TA03
μC
MEMORY
EN
R2
100k
R3
100k
+
R4
100k
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LTC3553EUD-2#PBF

Mfr. #:
Buy LTC3553EUD-2#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management Micropower USB Power Manager with Li-Ion Charger, LDO, and Buck Regulator
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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