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| LTC4089-3_15 Datasheet, PDF (6/24 Pages) Linear Technology – USB Power Manager with High Voltage Switching Charger | |||
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LTC4089-3
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise specified.
High Voltage Regulator
Maximum Load Current, L = 10µH
1.6
1.5
TYPICAL
1.4
1.3
1.2
1.1
MINIMUM
1.0
0.9
5 10 15 20 25 30 35
VIN (V)
40893 G10
High Voltage Regulator
Maximum Load Current, L = 33µH
1.8
1.6
TYPICAL
1.5
1.4
1.3
MINIMUM
1.2
1.1
1.0
0.9
5 10
15 20
25 30 35
VIN (V)
40893 G11
High Voltage Regulator
Switch Voltage Drop
550
500
450
TA = 85°C
400
350
TA = 25°C
300
250
TA = â40°C
200
150
100
50
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
SWITCH CURRENT (A)
40893 G12
High Voltage Regulator
Switch Frequency
800
780
760
740
720
700
680
660
640
620
600
â50 â25
0 25 50 75 100 125 150
TEMPERATURE (°C)
40893 G13
High Voltage Regulator
Frequency Foldback
800
700
600
500
400
300
200
100
0
0
1
2
3
HVOUT (V)
4
5
40893 G14
High Voltage Regulator
Soft-Start
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0 0.25 0.50 0.75 1 1.25 1.50 1.75 2
SHDN PIN VOLTAGE (V)
40893 G15
High Voltage Switch Current Limit
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0
TA = â40°C
TA = â5°C
TA = 25°C
TA = 90°C
10 20 30 40 50 60 70 80 90 100
DUTY CYCLE (%)
40893 G16
High Voltage Regulator
Typical Minimum Input Voltage
7.0
6.8
TO START
6.6
6.4
6.2
6.0
5.8
TO RUN
5.6
5.4
5.2
5.0
1
10
100
LOAD CURRENT (mA)
1000
40893 G17
40893f
6
For more information www.linear.com/4089-3
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