LTC3586-1 Linear Technology, LTC3586-1 Datasheet - Page 10

• Manufacturer Part Number: LTC3586-1
• Description: High Effi ciency USB Power Manager
• Manufacturer: Linear Technology

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LTC3586/LTC3586-1
TYPICAL PERFORMANCE CHARACTERISTICS
10
2200
2000
1800
1600
1400
1200
1000
100
13.0
12.0
11.0
14.0
13.5
12.5
11.5
800
600
400
200
20
10
90
80
70
60
50
40
30
0
0
1
–55
2.7
Boost Effi ciency (V
Buck-Boost Regulator Burst Mode
Operation Quiescent Current
Maximum Deliverable Boost
Output Current
V
L = 2.2μH
V
OUT4
OUT4
–35
EFFICIENCY
= 5V
3
= 4.9V (SET FOR 5V)
–15
T = –45ºC
TEMPERATURE (°C)
10
3.3
5
I
VOUT4
V
25
V
IN4
IN3
3.6
V
(mA)
IN4
(V)
45
= 4.5V
IN3
T = 25ºC
POWER LOSS
= 3.6V
100
= 3.8V)
65
3.9
V
T = 90ºC
IN1
85 105
= 3V
4.2
3586 G23
3586 G37
3586 G31
1000
125
4.5
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
100
300
250
200
150
100
95
90
85
80
50
0
2.7
2.7
100
Reduction in Current
Deliverability at Low V
Maximum Boost Duty Cycle
vs V
90
80
70
60
50
40
30
20
10
0
2.6
Boost Effi ciency vs V
IN4
3.1
3
3
T = 25ºC
3.3
3.5
INPUT VOLTAGE V
3.4
V
V
STEADY STATE ILOAD
START-UP WITH A
RESISTIVE LOAD
START-UP WITH A
CURRENT SOURCE LOAD
IN4
IN1
V
TYPE 3 COMPENSATION
3.6
3.8
3.9
T = 90ºC
OUT3
(V)
(V)
= 3.3V
4.2
3.9
T = –45ºC
4.3
IN1
IN4
IN4
I
V
VOUT4
OUT4
4.6
(V)
4.2
4.7
= 5V
= 300mA
3586 G38
3586 G32
(T
SYNCH
5
PMOS
A
OFF
4.5
3586 G35
= 25°C unless otherwise noted.)
5.4
100mV/DIV
I
200mA/DIV
VOUT3
100mV/DIV
I
125mA/DIV
COUPLED
VOUT4
COUPLED
300mA
5.000
4.995
4.990
4.985
4.980
4.975
4.970
4.965
4.960
4.955
4.950
V
300mA
V
OUT3
50mA
OUT4
AC
AC
0
–45
Buck-Boost Step Response
Boost Output Voltage
vs Temperature
V
V
Boost Step Response
(50mA to 300mA)
V
V
L = 2.2μH
C = 10μF
IN3
OUT3
IN4
OUT4
V
V
–30 –15
IN3
OUT3
= 3.8V
= 3.8V
= 3.3V
= 3.8V
= 5V
= 3.3V
V
IN4
TEMPERATURE (ºC)
= 2.7V
0
100μs/DIV
15
50μs/DIV
30
V
IN4
45
V
= 3.8V
IN4
60
= 4.5V
75
3586 G36
3586fa
3586 G33
3586 G39
90