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LT8685SRVPBF データシート(PDF) 22 Page - Analog Devices

部品番号 LT8685SRVPBF
部品情報  42V Quad, Gangable, Synchronous, Monolithic Step-Down Regulator
PDF  24 Pages
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メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
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LT8685SRVPBF データシート(HTML) 22 Page - Analog Devices

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LT8685S
22
Rev. 0
For more information www.analog.com
TYPICAL APPLICATIONS
2.2µF
2.2µF
4.7µF
0.1µF
0.1µF
31.6k
47µF
10.2k
0.1µF
0.1µH
100µF ×3
0.1µF
22.6k
0.8µH**
12.7k
100µF
10.2k
1.2µH**
4.7µF
499k
499k
499k
10nF
10nF
10nF
BST3
SW3
FB3
BST4
SW4
FB4
BIAS
BST1
SW1
FB1
BST2
SW2
FB2
EN/UVLO
EN2
VIN1
VIN2
VIN3
VIN4
4V TO 42V
TRK/SS4
TRK/SS3
TRK/SS2
TRK/SS1
RT
SYNC/MODE
OUT1
3.3V, 2.5A*
VIN
OUT3
0.7V, 8A
GND
OUT2
1.8V, 2.5A
LT8685S
INTVCC
EN3
PG4
PG3
PG2
PG1
INTVCC
EN4
*CURRENT AVAILABLE FROM OUT1:
2.5A – IVIN3 – IVIN4
OUT1
8685S TA03a
**INDUCTOR VALUES CHOSEN FOR VIN = 12V
STARTUP SEQUENCE:
VIN HIGH ENABLES OUT1
VOUT1 IN REGULATION ENABLES OUT3,4
VOUT3,4 IN REGULATION ENABLES OUT2
2ms/DIV
VIN
10V/DIV
VOUT1
2V/DIV
VOUT3,4
1V/DIV
VOUT2
1V/DIV
8685S TA03b
Startup Sequencing
Startup Sequencing
Compact Microcontroller Power Supply with Supply Sequencing
High Efficiency Quad Output Regulator Suitable for Driving Multiple LDO’s or Remote Circuitry
4.7µF
4.7µF
4.7µF
0.1µF
0.1µF
1M
47µF
97.6k
2.2pF
0.1µF 2.2µH
787k
100µF ×2
499k
4.7pF
0.1µF 1.2µH
261k
100µF ×2
909k
10pF
133k
0.1µF
8.2µH**
953k
47µF
154k
2.2pF
5.6µH**
1M
124k
22nF
22nF
22nF
22nF
499K
BST3
SW3
FB3
BST4
SW4
FB4
BIAS
BST1
SW1
FB1
BST2
SW2
FB2
EN/UVLO
EN2
VIN1
VIN2
EN3
EN4
VIN3
VIN4
10V TO 42V
PG4
PG3
PG2
PG1
RT
SYNC/MODE
OUT1
9V, 2.5A
INTVCC
OUT4
0.9V, 4A
VIN
OUT3
1.8V, 4A
GND
OUT2
5.75V, 2.5A*
LT8685S
TRK/SS4
TRK/SS3
TRK/SS2
TRK/SS1
*CURRENT AVAIALBLE FROM OUT2:
2.5A – IVIN3 – IVIN4 – IBIAS
OUT2
2.2µF
8685S TA04a
**INDUCTOR VALUES CHOSEN FOR VIN = 12V
STARTUP SEQUENCE:
VIN HIGH ENABLES OUT1 AND OUT2
V
AND OUT4
OUT2 IN REGULATION ENABLES OUT3
5ms/DIV
VIN
10V/DIV
VOUT1
5V/DIV
VOUT2
5V/DIV
VOUT3
1V/DIV
VOUT4
1V/DIV
8685S TA04b



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