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LTC3550EDHC-1#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
LTC3550-1
22
35501f
I
LOAD
(mA)
0.1
50
EFFICIENCY (%)
70
100
101 100 1000
35501 F07b
60
80
90
V
CC
= 2.7V
V
CC
= 4.2V
V
CC
= 3.6V
TYPICAL APPLICATIO S
U
1k
1%
1.24k
1%
WALL
ADAPTER
USB
POWER
3550-1 TA03
LTC3550-1
IDC
ITERM
IUSB
USBIN
DCIN
V
OUT
SW
GND
PWR
CHRG
BAT
2.2µH
4.2V
SINGLE-CELL
Li-Ion BATTERY
V
OUT
1.875V
600mA
2.1k
1%
1µF1µF
10µF
CER
V
CC
+
4.7µF
1k
1k
800mA (WALL)
475mA (USB)
Full Featured Dual Input Charger Plus Step-Down Converter
Figure 7a. Design Example Circuit
Figure 7b. Buck Regulator Effi ciency vs Output Current
APPLICATIO S I FOR ATIO
WUU
U
1.24k
1%
2.1k
1%
WALL
ADAPTER
USB
POWER
1µF
3550-1 F07a
10µF**
CER
+
2.2µH*
4.2V
SINGLE-
CELL Li-Ion
BATTERY
V
OUT
1.875V
600mA
1.24k
1%
4.7µF
†
1µF
800mA (WALL)
475mA (USB)
* MURATA LQH32CN2R2M33
** TAIYO YUDEN JMK316BJ106ML
†
TAIYO YUDEN LMK212BJ475MG
LTC3550-1
RUN
DCIN
USBIN
IUSB
IDC
SW
V
OUT
V
CC
BAT
GND
ITERM
LTC3550-1
23
35501f
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.
DHC Package
16-Lead Plastic DFN (5mm × 3mm)
(Reference LTC DWG # 05-08-1706)
PACKAGE DESCRIPTIO
U
3.00 ±0.10
(2 SIDES)
5.00 ±0.10
(2 SIDES)
NOTE:
1. DRAWING PROPOSED TO BE MADE VARIATION OF VERSION (WJED-1) IN JEDEC
PACKAGE OUTLINE MO-229
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
0.40 ± 0.10
BOTTOM VIEW—EXPOSED PAD
1.65 ± 0.10
(2 SIDES)
0.75 ±0.05
R = 0.115
TYP
R = 0.20
TYP
4.40 ±0.10
(2 SIDES)
18
169
PIN 1
TOP MARK
(SEE NOTE 6)
0.200 REF
0.00 – 0.05
(DHC16) DFN 1103
0.25 ± 0.05
PIN 1
NOTCH
0.50 BSC
4.40 ±0.05
(2 SIDES)
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
1.65 ±0.05
(2 SIDES)2.20 ±0.05
0.50 BSC
0.65 ±0.05
3.50 ±0.05
PACKAGE
OUTLINE
0.25 ± 0.05
LTC3550-1
24
35501f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2005
LT 1205 • PRINTED IN USA
PowerPath and ThinSOT are trademarks of Linear Technology Corporation.
Dual Input Charger Plus Step-Down Converter with Wall Adapter PowerPath
™
TYPICAL APPLICATIO S
U
PART NUMBER DESCRIPTION COMMENTS
LTC3406/LTC3406B 1.5MHz, 600mA Synchronous
Step-Down DC/DC Converter in ThinSOT
TM
V
IN
: 2.5V to 5.5V, V
OUT(MIN
) = 0.6V, I
Q
= 20µA, ThinSOT Package
LTC3455 Dual DC/DC Converter with USB Power
Management and Li-Ion Battery Charger
Effi ciency >96%, Accurate USB Current Limiting (500mA/100mA), 4mm × 4mm
QFN-24 Package
LTC3456 2-Cell Multi-Output DC/DC Converter
with USB Power Manager
Seamless Transition Between 2-Cell Battery, USB and AC Wall Adapter Input Power
Sources, QFN Package
LTC4054 Standalone Linear Li-Ion Battery Charger
with Integrated Pass Transistor in
ThinSOT
Thermal Regulation Prevents Overheating, C/10 Termination, Up to 800mA
Charge Current
LTC4055 USB Power Controller and Battery Charger Charges Single-Cell Li-Ion Batteries Directly from USB Port, Thermal Regulation,
4mm × 4mm QFN-16 Package
LTC4058 Standalone 950mA Lithium-Ion Charger
in DFN
C/10 Charge Termination, Battery Kelvin Sensing, ±7% Charge Accuracy
LTC4063 Standalone Li-Ion Charger Plus LDO 4.2V, ±0.35% Float Voltage, Up to 1A Charge Current, 100mA LDO
LTC4068 Standalone Linear Li-Ion Battery Charger
with Programmable Termination
Charge Current up to 950mA, Thermal Regulation, 3mm × 3mm DFN-8 Package
LTC4075 Dual Input Standalone Li-Ion Battery
Charger
Charges Single-Cell Li-Ion Batteries from Wall Adapter and USB Inputs with Automatic
Input Power Detection and Selection, 950mA Charger Current, Thermal Regulation,
C/X Charge Termination, 3mm × 3mm DFN Package
LTC4076 Dual Input Standalone Li-Ion Battery
Charger
Charges Single-Cell Li-Ion Batteries from Wall Adapter and USB Inputs with Automatic
Input Power Detection and Selection, 950mA Charger Current, Thermal Regulation, USB
Low Power Mode Select, C/X Charge Termination, 3mm × 3mm DFN Package
LTC4077 Dual Input Standalone Li-Ion Battery
Charger
Charges Single-Cell Li-Ion Batteries from Wall Adapter and USB Inputs with
Automatic Input Power Detection and Selection, 950mA Charger Current, Thermal
Regulation, Programmable USB Low Power Mode, C/10 Charge Termination,
3mm × 3mm DFN Package
RELATED PARTS
1k
1%
1.24k
1%
USB
POWER
3550-1 TA04
LTC3550-1
IDC
ITERM
IUSB
USBIN
V
OUT
SW
GND
V
CC
DCIN
2.2µH
4.2V
SINGLE-CELL
Li-Ion BATTERY
V
OUT
1.875V
600mA
2.1k
1%
1µF
10µF
CER
BAT
+
4.7µF
1µF
WALL ADAPTER
1k
800mA (WALL)
475mA (USB)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

LTC3550EDHC-1#PBF

Mfr. #:
Buy LTC3550EDHC-1#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management Dual Input USB/AC Adapter Li-Ion Battery Charger w/ 600mA Buck Converter
Lifecycle:
New from this manufacturer.
Delivery:
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