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LT1931 数据表(PDF) 9 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) 9 Page - Linear Technology

Back Button LT1931 Datasheet HTML 4Page - Linear Technology LT1931 Datasheet HTML 5Page - Linear Technology LT1931 Datasheet HTML 6Page - Linear Technology LT1931 Datasheet HTML 7Page - Linear Technology LT1931 Datasheet HTML 8Page - Linear Technology LT1931 Datasheet HTML 9Page - Linear Technology LT1931 Datasheet HTML 10Page - Linear Technology LT1931 Datasheet HTML 11Page - Linear Technology LT1931 Datasheet HTML 12Page - Linear Technology  
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background image
9
LT1931/LT1931A
1931fa
TYPICAL APPLICATIO S
VIN
VIN
5V
VOUT
–12V
150mA
1931 TA02
SW
L1A
10
µH
L1B
10
µH
D1
GND
LT1931
C1: TAIYO YUDEN X5R JMK212BJ475MG
C2: TAIYO YUDEN X5R TMK316BJ105ML
C3: TAIYO YUDEN X5R EMK325BJ106MM
D1: ON SEMICONDUCTOR MBR0520
L1: SUMIDA CLS62-100
C1
4.7
µF
C3
10
µF
C2
1
µF
R2
10k
R1
84.5k
NFB
SHDN
5V to –12V Inverting Converter
LOAD CURRENT (mA)
0
50
60
70
80
25
50
75
100
1931 TA03
125
90
100
55
65
75
85
95
150
Efficiency
VIN
VIN
5V
VOUT
–5V
300mA
1931 TA04
SW
L1
10
µH
L2
10
µH
D1
GND
LT1931
C1: TAIYO YUDEN X5R JMK212BJ475MG
C2: TAIYO YUDEN X5R LMK212BJ105MG
C3: TAIYO YUDEN X5R JMK212BJ226MM
D1: ON SEMICONDUCTOR MBR0520
L1, L2: MURATA LQH3C100K04
C1
4.7
µF
C3
22
µF
C2
1
µF
R2
10k
R1
29.4k
220pF
NFB
SHDN
5V to – 5V Inverting Converter Using Uncoupled Inductors
VIN
VIN
5V
VOUT
–5V
300mA
1931 TA05a
SW
L1
4.7
µH
L2
4.7
µH
D1
GND
LT1931A
C1: TAIYO YUDEN X5R JMK212BJ475MG
C2: TAIYO YUDEN X5R LMK212BJ105MG
C3: TAIYO YUDEN X5R JMK212BJ475MG
D1: ON SEMICONDUCTOR MBR0520
L1, L2: MURATA LQH3C4R7M24
C1
4.7
µF
C3
4.7
µF
C2
1
µF
R2
10k
R1
28.7k
C4
180pF
NFB
SHDN
LOAD CURRENT (mA)
0
50
55
65
70
75
100
200
250
1931 TA05b
60
80
50
150
300
350
2.2MHz, 5V to – 5V Inverting Converter
Efficiency


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