LTC4410ES6#TRMPBF

7
LTC4410
sn4410 4410fs
APPLICATIO S I FOR ATIO
WUUU
C1
4.7µF
C3
4.7µF
C2
0.15µF
R1
1
R3
2k
R2
2k
V
OUT
GND
NTC
TIMER
BAT2
LTC4410
LTC4053
V
IN
V
IN
BAT
GND
SHDN
USBPCHP
MODE
OFF
ON
5V WALL
ADAPTER
4410 F02
PROG
+
+
+
C4
0.1µF
GND
NTC
TIMER
BAT1
LTC4053
V
IN
BAT
SHDN
OFF
ON
PROG
+
Figure 2. Priority Dual Battery Charging with Wall Adapter
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 represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
Dual Battery Charging with Priority
The LTC4410 can be used to manage two battery chargers,
giving one of the chargers (see Figure 2) priority. When
BAT1 is being charged, the charge current is flowing
through the LTC4410. The LTC4410 is sensing the current
and sourcing a current equal to BAT1 charge current/1000
out of CHP. This effectively reduces the BAT2 charger
current. As BAT1 current demands reduce, the current
sourced out of CHP is reduced, enabling BAT2 to have
more current. In this example the power supply is a 750mA
minimum wall adapter, R
PROG
(R2 and R3) for the charg-
ers are 2k, resulting in a 750mA charge current. In this
application, the total current out of the wall adapter will
never exceed 750mA.
8
LTC4410
sn4410 4410fs
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
FAX: (408) 434-0507
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2002
LT/TP 1203 1K • PRINTED IN USA
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PART NUMBER DESCRIPTION COMMENTS
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No Sense Resistor
LTC4053 USB Li-Ion Battery Charger Operates from USB Port, 100mA/500mA Charge Capability, Standalone Charger
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IN
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PowerPath is a trademark of Linear Technology Corporation.
U
PACKAGE DESCRIPTIO
S6 Package
6-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1636)
1.50 – 1.75
(NOTE 4)
2.80 BSC
0.30 – 0.45
6 PLCS (NOTE 3)
DATUM ‘A’
0.09 – 0.20
(NOTE 3)
S6 TSOT-23 0302
2.90 BSC
(NOTE 4)
0.95 BSC
1.90 BSC
0.80 – 0.90
1.00 MAX
0.01 – 0.10
0.20 BSC
0.30 – 0.50 REF
PIN ONE ID
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
3.85 MAX
0.62
MAX
0.95
REF
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
1.4 MIN
2.62 REF
1.22 REF

LTC4410ES6#TRMPBF

Mfr. #:
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management USB Pwr Manager in SOT
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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