参数资料
型号: LT1776IS8#TR
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: 1 A SWITCHING REGULATOR, 230 kHz SWITCHING FREQ-MAX, PDSO8
封装: 0.150 INCH, PLASTIC, SO-8
文件页数: 13/20页
文件大小: 224K
代理商: LT1776IS8#TR
20
LT1776
PART NUMBER
DESCRIPTION
COMMENTS
LT1076
2A, 100kHz Step-Down Switching Regulator
Operation Up to 45V Input (64V for HV Version)
LTC
1149
High Efficiency Synchronous Step-Down Switching Regulator
Operation Up to 48V Input, 95% Efficiency, 100% Duty Cycle
LT1374
4.5A, 500kHz Step-Down Switching Regulator
Converts 12V to 3.3V at 2.5A in SO-8 Package
LT1375/LT1376
1.5A, 500kHz Step-Down Switching Regulators
Operation Up to 25V Input, Synchronizable (LT1375)
LT1620
Rail-to-Rail Current Sense Amplifier
Transforms Switching Regulators into High Efficiency
Battery Chargers
LT1676
Wide Input Range, High Efficiency, Step-Down Switching Regulator
7.4V to 60V Input, 100kHz Operation, 700mA Internal Switch
LT1777
Low Noise Buck Regulator
Operation up to 48V, Controlled Voltage and Current
Slew Rates
LINEAR TECHNOLOGY CORPORATION 1998
sn1776 1776fs LT/TP 0499 4K PRINTED IN
USA
Wide VIN Range, High Efficiency Battery Charger
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 q FAX:(408)434-0507 q www.linear-tech.com
LOAD CURRENT (mA)
20
50
40
30
90
80
70
60
1776 TA03
EFFICIENCY
(%)
10
1000
100
VIN = 12V
VIN = 24V
Battery Charger Efficiency —
Constant VOUT Region
OUTPUT CURRENT (mA)
0
1
0
OUTPUT
VOLTAGE
(V)
2
3
4
5
7
6
50
100
150
250
200
1776 TA05
OUTPUT VOLTAGE (V)
0
60
70
80
35
1776 TA04
50
40
12
46
30
20
EFFICIENCY
(%)
90
VIN = 12V
VIN = 24V
Battery Charger Efficiency —
Constant IOUT Region
Battery Charger Output Voltage
vs Output Current
VIN
VCC
VSW
U1
LT1776
U3
LT1121-5
FB
VC
SHDN
SYNC
C1: PANASONIC HFQ
C2: AVX TPSD107M010R0080
L1: COILCRAFT DO3316P-104
7
C1
39
F
63V
5
4
1776 TA02
2
3
8
1
VIN
10V TO 30V
(SEE TEXT)
6
GND
VCC
IN +
PROG
U2
LT1620
IOUT
IN
NC
AVG
SENSE
2
5
4
6
3
8
1
7
GND
+
D1
MBRS1100
R1
46.4k
1%
BATTERY
R2
12.1k
1%
R3
22k
R5
3k
R6
12k
L1
100
H
R4
0.5
C4
2200pF
C3
100pF
C7
0.1
F
C5
100pF
C6
0.33
F
C2
100
F
10V
C8
1
F
+
TYPICAL APPLICATION
U
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相关代理商/技术参数
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