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LT3506 Datasheet(PDF) 19 Page - Linear Technology

Part # LT3506
Description  Dual Monolithic 1.6A Step-Down Switching Regulator
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3506 Datasheet(HTML) 19 Page - Linear Technology

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LT3506/LT3506A

3506afb
TYPICAL APPLICATIO S
1.8V and 1.2V Outputs with Sequencing
1.8V and ±5V Outputs
VIN
4.5V TO 21V
3506 TA01
68
µF
47
µF
22
µF
0.22
µF
0.22
µF
32.4k
18.7k
16.2k
L2
3.3
µH
L1
4.7
µH
VOUT2
1.2V
1.5A
VOUT1
1.8V
1.5A
15k
4.7nF
1500pF
1000pF
BOOST1
SW1
FB1
VC1
RUN/SS1
RUN/SS2
PGOOD2
BOOST2
SW2
FB2
VC2
PGOOD1
LT3506
VIN2
VIN1
GND
OUTPUT CURRENTS CAN INCREASE TO 1.6A WHEN VIN>12V.
D1, D2: ON SEMICONDUCTOR MBRS230LT3
D3: BAT-54A
L1: COILCRAFT MSS6122-472
L2: TDK SLF7028-3R3M
PGOOD
D1
D2
D3a
D3b
100k
20k
15k
VIN
7V TO 25V
3506 TA02
22
µF
2.2nF
47
µF
22
µF
22
µF
0.22
µF
0.22
µF
2.2
µF
13.3k
18.7k
69.8k
L1
4.7
µH
VOUT2
5V
0.6A
VOUT1
1.8V
1.5A
15k
47k
15k
15k
100k
4.7nF
BOOST1
SW1
FB1
VC1
RUN/SS1
PGOOD2
PGOOD1
BOOST2
SW2
FB2
VC2
RUN/SS2
LT3506
VIN2
VIN1
GND
L1: COILCRAFT MSS6122-472
L2: COILTRONICS CTX5-1A
IOUT3 SHOULD NEVER EXCEED 1/2 OF IOUT2.
SEE DESIGN NOTE 100 FOR DETAILS ON
GENERATING DUAL OUTPUTS USING A BUCK
REGULATOR.
D1: ON SEMICONDUCTOR MBRS230LT3
D2: ON SEMICONDUCTOR MBRM130LT3
D3: BAT-54A
D4: ON SEMICONDUCTOR MBR0530
PGOOD
D1
D2
D3a
D3b
VOUT2
L2
4.7
µH
VOUT3
–5V
0.3A
D4
1500pF
1500pF



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