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LT3645 Datasheet(PDF) 5 Page - Linear Technology

Part # LT3645
Description  36V 500mA Step-Down Regulator and 200mA LDO
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3645 Datasheet(HTML) 5 Page - Linear Technology

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LT3645
5
3645f
TYPICAL PERFORMANCE CHARACTERISTICS
Buck Power Switch Voltage Drop
Buck Power Switch Current Limit
Undervoltage Lockout
Overvoltage Lockout
Switching Frequency
TEMPERATURE (°C)
–50
0
600
650
800
750
700
850
900
950
1000
50
3645 G08
100
150
TEMPERATURE (°C)
–50 –30 –10
3.2
3.3
3.5
3.4
3.6
3.7
3.8
10 30 50 70 90
130
3645 G09
110
150
TEMPERATURE (°C)
–50
0
36.5
37.0
38.0
37.5
38.5
39.0
39.5
50
3645 G10
100
150
RISING
FALLING
TEMPERATURE (°C)
–50
0
700
750
740
730
720
710
770
760
780
790
800
50
3645 G11
100
150
TEMPERATURE (°C)
–50
0
200
220
260
240
280
300
320
340
50
3645 G12
100
150
TEMPERATURE (°C)
–60 –40 –20
20 40 60
0
0
50
150
100
250
200
300
350
80
3645 G14
120
100
140 160
OUTPUT CURRENT (mA)
0
50
100
150
–0.12
–0.16
–0.14
–0.06
–0.08
–0.10
–0.04
–0.02
0
3645 G15
200
LDO Power Transistor Current
Limit
LDO Dropout Voltage to VCC2
LDO Dropout Voltage
LDO Load Regulation
LOAD CURRENT (mA)
050
0
50
150
100
250
200
300
350
100
3645 G13
150
200
OUT2 = 0.8V
OUT2 = 3.3V
SWITCH CURRENT (mA)
0
50 100 150 200 250 300 350 400 450
0
50
200
150
100
250
300
350
400
3645 G07
500



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