参数资料
型号: LT1339ISW#TRPBF
厂商: Linear Technology
文件页数: 20/20页
文件大小: 0K
描述: IC REG CTRLR BST PWM CM 20-SOIC
标准包装: 1,000
PWM 型: 电流模式
输出数: 1
频率 - 最大: 150kHz
占空比: 90%
电源电压: 最高 60V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 20-SOIC(0.295",7.50mm 宽)
包装: 带卷 (TR)
LT1339
TYPICAL APPLICATIO N
48V to 5V 50A DC/DC Converter with Input Supply Start-Up Protection
12V
50mA
V IN
48V
R CT
10k
LT1339
SYNC V BOOST
5V REF TG
+
DBST
IN5819
+ CBST
1 μ F
C 12VIN
47 μ F
Q1
Q2
C IN
1500 μ F
63V, × 6
+
IRFZ44
× 2
C 5VREF
1 μ F
+ C CT
2200pF
CT
SL/ADJ
TS
12V IN
Q3
D3
MMSZ4684
D1
SGND
C SS , 10 μ F
C VC , 2200pF
C REF
0.1 μ F
C AVG , 2200pF
R VC , 4.7k
I AVG
SS
V C PGND
V FB
BG
PHASE
RUN/SHDN
R R3
51k
R R1
22k
Q4
R R2
1.2k
C BG , 1 μ F
D2
MBR0520
R BG
10k
D4
IN914
IRFZ44
× 4
L1
40 μ H
R FB2
1k
R FB1
3k
V REF
SENSE –
SENSE +
D1 = IR30BQ060 × 8
Q1, Q3 = FMMT619; Q2, Q4 = FMMT720
L1 = Kool M μ ? , 12T 4X12 ON 77439-A7
R S
0.002 ?
C OUT
2200 μ F
6.3V, × 4
+
V OUT
5V AT 50A
100
95
90
85
80
75
70
65
60
55
Kool M μ IS A REGISTERED TRADEMARK OF MAGNETICS, INC.
48V to 5V Efficiency
1339 TA01
50
0
10
20
30
40
50
OUTPUT CURRENT (AMPS)
LT1339 ? TA02
RELATED PARTS
PART NUMBER
LT1158
LT1160
LT1162
LT1336
LTC ? 1530
LTC1435A
LTC1438
LT1680
DESCRIPTION
Half-Bridge N-Channel MOSFET Driver
Half-Bridge N-Channel MOSFET Driver
Dual Half-Bridge N-Channel MOSFET Driver
Half-Bridge N-Channel MOSFET Driver
High Power Step-Down Switching Regulator Controller
High Efficiency, Low Noise Current Mode Step-Down DC/DC Converter
Dual High Efficiency, Low Noise Synchronous Step-Down Controller
High Power DC/DC Current Mode Step-Up Controller
COMMENTS
Current Limit Protection, 100% of Duty Cycle
Up to 60V Input Supply, No Shoot-Through
V IN to 60V, Good for Full-Bridge Applications
Smooth Operation at High Duty Cycle (95% to 100%)
Excellent for 5V to 3.xV Up to 50A
Drives Synchronous N-Channel MOSFETs
Tight 1% Reference
High Side Current Sense, Up to 60V Input
sn1339 1339fas
1630 McCarthy Blvd., Milpitas, CA 95035-7417 Linear q FAX:(408)434-0507 q www.linear-tech.com
20 (408)432-1900 Technology Corporation
LT/TP 0299 2K REV A ? PRINTED IN THE USA
? LINEAR TECHNOLOGY CORPORATION 1997
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