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LT1931 数据表(PDF) 10 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) 10 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
10
LT1931/LT1931A
1931fa
TYPICAL APPLICATIO S
VIN
VIN
5V
VOUT
–5V
200mA
1931 TA06a
SW
L1
3.3
µH
L2
3.3
µH
D1
GND
LT1931A
C1: TAIYO YUDEN X5R JMK212BJ225MG
C2: TAIYO YUDEN X5R LMK212BJ105MG
C3: TAIYO YUDEN X5R JMK212BJ475MG
D1: ON SEMICONDUCTOR MBR0520
L1, L2: PANASONIC ELJPC3R3MF
C1
2.2
µF
C3
4.7
µF
C2
1
µF
R2
10k
R1
28.7k
C4
68pF
NFB
SHDN
LOAD CURRENT (mA)
0
50
55
60
65
70
75
80
50
100
150
200
1931 TA06b
250
2.2MHz, 5V to –5V Converter Uses Tiny Chip Inductors
Efficiency
VIN
VIN
12V
VSS
SW
L1
22
µH
GND
R2
1k
LT1931
NFB
SHDN
RSS
15k
R3
25.5k
R1
1
R4
2.7k
C6
1000pF
CSS
68nF
C1
4.7
µF
16V
C3
1
µF
35V
*TOTAL OUTPUT POWER NOT TO EXCEED 3.3W
C1 TO C5: X5R OR X7R
D1, D2: BAV99 OR EQUIVALENT
L1: SUMIDA CR43-220
C5
4.7
µF
35V
32
D2
1
1931 TA08
C4
4.7
µF
35V
VOUT1
–33V
100mA*
COM
VOUT2
–66V
48mA*
C2
1
µF
35V
32
D1
1
SLIC Power Supply with – 33V and – 68V Outputs, Uses Soft-Start


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