LTC1729-8.4 データシートの表示（PDF） - Linear Technology
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LTC1729-8.4 Datasheet PDF : 16 Pages
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LTC1729 Series
TYPICAL APPLICATIO
3A (LT1511) Or 2A (LT1769), 2-Cell Lithium-Ion Battery Charger
C2
0.47µF
L1**
22µH
GND
CLP
D4
SS24
CLN
SW
VCC
LT1511 OR LT1769
BOOST
D3
MBR0540T
COMP1
C3
220pF
UV
PROG
SPIN
VC
OVP
SENSE
RS2
200Ω
1%
RS1
0.05Ω
BAT
RS3
200Ω
1%
C1*
15µF
R1
510Ω
1µF
D1
SS24
RS4
0.05Ω
D2
R5
SS24 3k
R6
5.1K
INPUT POWER
11.5V TO 28V
TO MAIN
SYSTEM
LOAD
C4
0.33µF
R2
1k
CPROG
1µF
R3
300Ω
RPROG
4.93k
+ C7***
22µF
+
8.4V
R4
100Ω
LTC1729-8.4
OVP
VCC
BAT
C5
VC
1µF
SENSE STATUS
GND
NTC
* TOKIN C55Y5U1E156Z
** SUMIDA CDRH125-220MC
*** AVX TPSD226K025R0200
† LUMEX SML-LX0805GW-TR
D1, D2, D4: GENERAL SEMICONDUCTOR
C6
0.1µF
R7
1.4k
D5†
10k NTC THERMISTOR, NTHS1206N02 VISHAY/DALE
NOTE: EITHER A THERMISTOR OR 10k RESISTOR MUST BE PRESENT
OPTION: TIE RESISTOR TO STATUS FOR
CHARGE TERMINATION AT
LOW CHARGING CURRENT
1729 TA04
RELATED PARTS
PART NUMBER
LT1505
LT1510
DESCRIPTION
High Efficiency Constant-Voltage/Constant-Current
Battery Charger
Constant-Voltage/Constant-Current Battery charger
LT1511
LT1512
LT1513
LT1571-1/LT1571-2
LT1571-5
LTC1731
LTC1732
LTC1759
LT1769
3A Constant-Voltage/Constant-Current Battery Charger
SEPIC Battery Charger
SEPIC Battery Charger
200kHz/500kHz Constant-Current/Constant-Voltage Battery
Charger Family
Linear Charger
Linear Charger
SMBus-Controlled Smart Battery Charger
2A Constant-Voltage/Constant-Current Battery Charger
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 q FAX:(408)434-0507 q www.linear-tech.com
COMMENTS
Uses External Synchronous N-Channel FETs
Up to 1.5A Charge Current for Lithium-Ion, NiCd and
NiMH Batteries, Internal RSENSE
Charges Lithium, NiCd and NiMH Batteries
VIN Can Be Higher or Lower Than Battery Voltage, 2A Switch
VIN Can Be Higher or Lower Than Battery Voltage, 3A Switch
Up to 1.5A Charge Current for 1- or 2-Cell Li-Ion Batteries,
Preset and Adjustable Battery Voltages, C/10 Charge Detection
Programmable Timer, C/10 Flag, 8-Pin MSOP
Programmable Timer, C/10 Flag, AC Power Good, 10-Pin MSOP
LT1505 Charger Functionality with SMBus Control
28-Pin SSOP Package
1729f LT/LCG 0800 4K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1999
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