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LT1931 数据表(PDF) 12 Page - Linear Technology

部件名 LT1931
功能描述  1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT
Download  12 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LT1931 数据表(HTML) 12 Page - Linear Technology

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LT1931/LT1931A
1931fa
LT/LT 1005 REV A • PRINTED IN USA
©LINEAR TECHNOLOGY CORPORATION 2000
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 FAX:(408)434-0507 www.linear-tech.com
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1307
Single Cell Micropower 600kHz PWM DC/DC Converter
3.3V at 75mA from One Cell, MSOP Package
LT1316
Burst Mode
TM Operation DC/DC with Programmable Current Limit
1.5V Minimum, Precise Control of Peak Current Limit
LT1317
2-Cell Micropower DC/DC with Low-Battery Detector
3.3V at 200mA from Two Cells, 600kHz Fixed Frequency
LT1610
Single Cell Micropower DC/DC Converter
3V at 30mA from 1V, 1.7MHz Fixed Frequency
LT1611
Inverting 1.4MHz Switching Regulator in 5-Lead ThinSOT
–5V at 150mA from 5V Input. Tiny SOT-23 Package
LT1613
1.4MHz Switching Regulator in 5-Lead ThinSOT
5V at 200mA from 3.3V Input. Tiny SOT-23 Package
LT1615
Micropower Constant Off-Time DC/DC Converter in 5-Lead ThinSOT
20V at 12mA from 2.5V. Tiny SOT-23 Package
LT1617
Micropower Inverting DC/DC Converter in 5-Lead ThinSOT
–15V at 12mA from 2.5V. Tiny SOT-23 Package
LT1930/LT1930A
1.2MHz/2.2MHz, 1A Switching Regulators in 5-Lead ThinSOT
5V at 450mA from 3.3V Input. Tiny SOT-23 Package
Burst Mode operation is a trademark of Linear Technology Corporation.
TYPICAL APPLICATIO
2.2MHz, 12V to – 5V Converter Uses Low Profile Coupled Inductor
Efficiency
VIN
VIN
12V
VOUT
–5V
450mA
1931 TA07a
SW
L1A
4.7
µH
L1B
4.7
µH
D1
GND
LT1931A
C1: TAIYO YUDEN Y5V EMK212F225ZG
C2: 0.1
µF 25V X5R
C3: TAIYO YUDEN X5R JMK212BJ475MG
D1: ON SEMICONDUCTOR MBR0520
L1: SUMIDA CLQ4D10-4R7 DRAWING #5382-T039
C1
2.2
µF
C3
4.7
µF
C2
0.1
µF
R2
10k
R1
28.7k
NFB
SHDN
LOAD CURRENT (mA)
0
50
55
60
65
70
75
80
100
200
300
400
1931 TA07b
500


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