LTC1473L 查看數據表（PDF） - Linear Technology
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LTC1473L Datasheet PDF : 16 Pages
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LTC1473L
TYPICAL APPLICATIO
Protected Automatic Switchover Between Two Supplies
SUPPLY V1
10k
1M
3+ 8
2–
4
5V
1 LT1121-5 8
3
1M
1µF
LT1490
1
5+
7
6–
SUPPLY V2
1M
1M
10k
*1812LS-105XKBC, COILCRAFT
BAT54C
C6
2600pF
1 IN1 LTC1473L GA1 16
2 IN2
SAB1 15
3 DIODE
GB1 14
4 TIMER
SENSE+ 13
5 V+
SENSE– 12
C7
1µF
6
L1*, 1mH 7
VGG
SW
C5
1µF
8
GND
GA2 11
SAB2 10
GB2 9
Q1
Si9926DY
R3
0.033Ω
OUT
Q2
Si9926DY
1473 • TA02
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PART NUMBER
LTC1155
LTC1161
LTC1735
LTC1473
LTC1479
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DESCRIPTION
Dual High Side Micropower MOSFET Driver
Quad Protected High Side MOSFET Driver
Single High Efficiency Synchronous DC/DC Controller
Dual PowerPath Switch Driver
PowerPath Controller for Dual Battery Systems
Synchronous Battery Charger with Adapter Current Limit
LT1510
LT1511
Constant-Voltage/Constant-Current Battery Charger
3A Constant-Voltage/Constant-Current Battery Charger
LTC1558/LTC1559
LTC1622
LTC1628
LT1769
Backup Battery Controller with Programmable Output
Current Mode Step-Down DC/DC Converter
Dual High Efficiency Synchronous Buck DC/DC Controller
2A Constant-Voltage/Constant-Current Battery Charger
COMMENTS
Internal Charge Pump Requires No External Components
Rugged, Designed for Harsh Environment
Constant Frequency, 3.5 ≤ VIN ≤ 36V, Fault Protection
V+ Range from 4.75V to 30V
Designed to Interface with a Power Management µP
High Efficiency, Up to 8A Charge Current, End-of-Charge Flag,
28-Pin SSOP, 0.5V Dropout Voltage
Up to 1.5A Charge Current for Lithium-Ion, NiCd and NiMH Batteries
High Efficiency, Minimal External Components to Fast Charge
Lithium, NiMH and NiCd Batteries
Power Supply Backup Using a Single NiCd Cell
550kHz Operation, 100% Duty Cycle, VIN from 2V to 10V
2-Phase Switching, 5V Standby in Shutdown, Fault Protection
Charges Lithium, NiCd and NiMH Batteries, 28-Lead SSOP
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 q FAX:(408)434-0507 q www.linear-tech.com
1473lf LT/TP 1099 4K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1999
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