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LTC4090 Datasheet(PDF) 7 Page - Linear Technology

Part # LTC4090
Description  USB Power Manager with 2A High Voltage Bat-Track Buck Regulator
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4090 Datasheet(HTML) 7 Page - Linear Technology

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LTC4090/LTC4090-5
7
4090fa
TEMPERATURE (
°C)
–50
2.80
2.85
2.90
25
75
150
4090 G20
2.75
2.70
2.65
–25
0
50
100 125
DUTY CYCLE (%)
0
40
4090 G15
2.5
20
60
1.5
1.0
4.0
3.5
3.0
2.0
80
100
RUN/SS PIN VOLTAGE (V)
0
3.5
1.5
4090 G14
2.0
1.0
0.5
1
2
0.5
0
4.0
3.0
2.5
1.5
2.5
3
3.5
TEMPERATURE (
°C)
–50
500
600
700
800
900
050
100
150
4090 G12
1000
1100
–25
25
75
125
HVOUT (V)
0
0
100
300
400
500
1000
700
1
2
4090 G13
200
800
900
600
3
4
BOOST DIODE CURRENT (A)
0
0.8
1.0
1.2
2.0
4090 G18
0.6
0.4
0
0.5
1.0
1.5
0.2
1.4
LOAD CURRENT (mA)
1
5.0
6.0
7.0
10
100
1000
4090 G17
4.0
4.5
5.5
6.5
3.5
3.0
TO START
TO RUN
TEMPERATURE (
°C)
1.50
2.00
2.50
4090 G19
1.00
0.50
0
CURRENT LIMIT CLAMP
SWITCHING THRESHOLD
–50
25
–25
0
50
75
100
150
125
TYPICAL PERFORMANCE CHARACTERISTICS
High Voltage Regulator Switch
Frequency
High Voltage Regulator
Frequency Foldback
High Voltage Regulator Soft-Start
High Voltage Regulator Switch
Current Limit
High Voltage Regulator Minimum
Input Voltage
High Voltage Regulator Boost
Diode VF vs IF
High Voltage Regulator VC
Voltages
High Voltage Regulator Power
Good Threshold
TEMPERATURE (
°C)
2.0
2.5
3.5
3.0
4090 G16
1.5
1.0
0
0.5
4.5
4.0
DUTY CYCLE = 10 %
DUTY CYCLE = 90 %
–50
25
–25
0
50
75
100
150
125
High Voltage Regulator Switch
Current Limit



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