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LT3045 Datasheet(PDF) 39 Page - Analog Devices

Part # LT3045
Description  18V, 1A Step-Down Silent Switcher 3 with Ultra-Low Noise Reference
PDF  45 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LT3045 Datasheet(HTML) 39 Page - Analog Devices

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Data Sheet
LT83201
analog.com
Rev. A 39 of 45
Figure 63. 3.3V 1A 6MHz Step-Down Converter with Soft-Start, Fast Start-Up and Power Good
Figure 64. 0.2V 1A 300kHz Step-Down Converter with Soft-Start
9.76kΩ
1µF
33.2kΩ
3.24kΩ
280kΩ
49.9kΩ
0.1µF
1µF
680pF
1µF
1µF
0.82µH
2.2µF ×2
VIN
EN/UVLO
SET
RT
GND
VC
PGFB
OUTS
SW
LT83201
fSW = 6MHz
BST
INTVCC
VIN
GND
GND
VIN
5.6V* TO 18V
*MINIMUM VIN 6.1V IF IN FCM
3.3V
1A
VOUT
10µF ×2
22µF ×1
0603
X7T
35V
4.7µF
PG
CSET: GCM188D7YA105KE36#
L: XGL3512
PIN(S) NOT USED IN THIS CIRCUIT:
SYNC/MODE
TYPICAL PERFORMANCE CHARACTERISTIC
6MHz, 3.3VOUT NOISE DATA USES THIS CIRCUIT
0.5V OR INTVCC*
*NOTE THAT APPLICATIONS WITH VOUT BELOW 0.5V WILL NOT BE ABLE TO USE THE POWER GOOD AND FAST START-UP
FUNCTIONALITIES AND MUST TIE PGFB TO 0.5V or INTVCC TO DISABLE THESE FUNCTIONS CORRECTLY.
392kΩ
1µF
2kΩ
2.32kΩ
0.1µF
1µF
12nF
1µF
1µF
1.8µH
22µF ×3
VIN
EN/UVLO
SET
RT
GND
VC
PGFB
OUTS
SW
LT83201
fSW = 300kHz
BST
INTVCC
VIN
GND
GND
VIN
2.8V TO 18V
0.2V
1A
VOUT
0603
X7T
35V
4.7µF
CSET: GCM188D7YA105KE36#
L: XGL3530
PIN(S) NOT USED IN THIS CIRCUIT:
PG, SYNC/MODE
220µF



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