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LTC3858IUH Datasheet(PDF) 7 Page - Linear Technology

Part # LTC3858IUH
Description  Low IQ, Dual 2-Phase Synchronous Step-Down Controller
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3858IUH Datasheet(HTML) 7 Page - Linear Technology

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LTC3858

3858fa
Typical perForMance characTerisTics
Soft-Start Pull-Up Current
vs Temperature
Shutdown (RUN) Threshold
vs Temperature
Regulated Feedback Voltage
vs Temperature
SENSE– Pin Input Current
vs Temperature
Shutdown Input Current
vs Input Voltage
Oscillator Frequency
vs Temperature
Undervoltage Lockout Threshold
vs Temperature
TEMPERATURE (°C)
–45
1.15
30
3858 G19
1.00
0.90
–20
5
55
0.85
0.80
1.20
1.10
1.05
0.95
80
105 130
TEMPERATURE (°C)
–45
0.90
0.95
1.05
1.10
1.15
1.40
1.25
5
55
80
3858 G20
1.00
1.30
1.35
1.20
–20
30
105 130
TEMPERATURE (°C)
–45
806
30
22554 G21
800
796
–20
5
55
794
792
808
804
802
798
80
105 130
TEMPERATURE (°C)
–45
–600
–550
–200
–150
50
–50
–20
30
55
130
3858 G22
0
–100
–400
–350
–500
–450
–250
–300
5
80
105
VOUT = 3.3V
VOUT = 28V
INPUT VOLTAGE (V)
5
8
10
14
20
30
3858 G23
6
4
10
15
25
35
40
2
0
12
TEMPERATURE (°C)
–45
3.4
3.5
3.7
3.8
3.9
4.4
4.1
5
55
80
3858 G25
3.6
4.2
4.3
4.0
–20
30
105 130
Oscillator Frequency
vs Input Voltage
INPUT VOLTAGE (V)
5
352
354
356
20
30
3858 G28
350
348
10
15
25
35
40
346
344
FREQ = GND
TEMPERATURE (°C)
–45
700
30
3858 G24
400
200
–20
5
55
100
0
800
600
500
300
80
105 130
FREQ = INTVCC
FREQ = GND


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