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LTC3633A-3 Datasheet(PDF) 6 Page - Linear Technology

Part # LTC3633A-3
Description  Dual Channel 3A, 20V Monolithic Synchronous Step-Down Regulator
Download  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3633A-3 Datasheet(HTML) 6 Page - Linear Technology

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LTC3633A-2/LTC3633A-3
6
3633a23fb
For more information www.linear.com/LTC3633A-2
Burst Mode Operation
Internal MOSFET RDS(ON)
vs Temperature
Quiescent Current vs VIN
Burst Mode Operation
Switch Leakage vs Temperature
Valley Current Limit
vs Temperature
TRACKSS Pull-Up Current
vs Temperature
TYPICAL PERFORMANCE CHARACTERISTICS
Shutdown Current vs VIN
Load Step
4
100
200
300
500
8
20
3633a23 G11
0
600
900
800
700
400
6
10
12
16
14
18
90°C
25°C
–40°C
VIN (V)
4
2
4
6
10
8
20
3633a G12
0
12
24
22
16
18
20
14
8
6
10
12
14
16
18
VIN (V)
–50
1000
2000
3000
5000
0
150
100 125
3633a23 G13
0
6000
10000
9000
8000
7000
4000
–25
25
50
75
TEMPERATURE (°C)
SYNCHRONOUS SWITCH
MAIN SWITCH
TJ = 25°C, PVIN1 = PVIN2 = SVIN = 12V, fSW = 1MHz,
L = 1µH unless otherwise noted.
TEMPERATURE (°C)
–50
1.4
1.6
2.0
25
75
3633a23 G15
1.2
1.0
–25
0
50
100
125
0.8
0.6
1.8
–50
3.4
3.5
50
3633a23 G14
3.3
3.7
3.6
3.9
3.8
25
–25
0
75
100 125
TEMPERATURE (°C)
IL
1A/DIV
SW
10V/DIV
5µs/DIV
3633a23 G17
VOUT
50mV/DIV
VOUT = 1.8V
ILOAD = 100mA
IL
2A/DIV
20µs/DIV
3633a23 G18
VOUT
AC-COUPLED
100mV/DIV
VOUT = 1.8V
ILOAD = 100mA to 3A
CITH = 220pF
RITH = 13k
–50 –25
0
20
60
80
100
140
50
125
3633a23 G10
40
160
200
180
120
0
25
75
100
TEMPERATURE (°C)
TOP SWITCH
BOTTOM SWITCH


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