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LT3045 Datasheet(PDF) 39 Page - Analog Devices

Part # LT3045
Description  18V, 3A/5A Step-Down Silent Switcher 3 with Ultra-Low Noise Reference
PDF  44 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
LT83203/LT83205
analog.com
Rev. B
39 of 44
Figure 61. 3.3V 3A 6MHz Step-Down Converter with Soft-Start, Fast Start-Up and Power Good
Figure 62. 0.2V 5A 300kHz Step-Down Converter with Soft-Start
1µF ×2
9.76kΩ
4.7µF
33.2kΩ
3.01kΩ
280kΩ
49.9kΩ
0.1µF
1µF
560pF
0.22µF
0.22µF
100µF
0.47µH
2.2µF ×2
VIN
EN/UVLO
SET
RT
GND
VC
PGFB
OUTS
SW
LT83203
fSW = 6MHz
BST
INTVCC
VIN
GND
GND
VIN
7V TO 18V
VOUT
3.3V
3A
10µF ×1
22µF ×1
47µF ×2
1206
X7R
25V
2.2µF ×1
4.7µF ×1
PG
PIN(S) NOT USED IN THIS CIRCUIT:
SYNC/MODE
CSET: GCJ31CR71E475KA12L
TYPICAL PERFORMANCE CHARACTERISTIC
6MHz, 3.3VOUT NOISE DATA USES THIS CIRCUIT
L: XGL4020
1µF ×2
392kΩ
2.2µF
698Ω
0.1µF
1µF
27nF
0.22µF
0.22µF
2kΩ
100µF ×5
0.47µH
VIN
EN/UVLO
SET
RT
GND
VC
OUTS
SW
LT83205
fSW = 300kHz
BST
INTVCC
VIN
GND
GND
VIN
2.8V TO 18V
0.2V
5A
VOUT
0805
X7R
6.3V
22µF ×5
PIN(S) NOT USED IN THIS CIRCUIT:
PG, SYNC/MODE
CSET: CC0805KKX7R5BB225
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 TO DISABLE THESE FUNCTIONS CORRECTLY.
L: XGL4030
PGFB



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