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| LTC3586-1_15 Datasheet, PDF (5/36 Pages) Linear Technology – High Efficiency USB Power Manager with Boost, Buck-Boost and Dual Bucks | |||
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LTC3586/LTC3586-1
Electrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VBUS = 5V, BAT = 3.8V, VIN1 = VIN2 = VIN3 = VIN4 = VOUT3 = 3.8V,
VOUT4 = 5V, RPROG = 1k, RCLPROG = 3.01k, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
Switching Regulators 1 and 2 (Buck)
IVIN1,2
Pulse-Skip Mode Input Current
Burst Mode® Input Current
Shutdown Input Current
ILIM1,2
PMOS Switch Current Limit
RP1,2
PMOS RDS(ON)
RN1,2
NMOS RDS(ON)
D1,2
Maximum Duty Cycle
RSW1,2
SW1,2 Pull-Down in Shutdown
Switching Regulator 3 (Buck-Boost)
IVOUT1,2 = 0µA, (Note 7)
IVOUT1,2 = 0µA, (Note 7)
IVOUT1,2 = 0µA, (Note 7)
Pulse-Skip/Burst Mode Operation (Note 5)
225
35
60
1
600
800 1100
0.6
0.7
100
10
IVIN3
Input Current
PWM Mode, IVOUT3 = 0µA
Burst Mode Operation, IVOUT3 = 0µA
Shutdown
220
400
13
20
0
1
VOUT3(LOW)
VOUT3(HIGH)
ILIMF3
IPEAK3(BURST)
IZERO3(BURST)
IMAX3(BURST)
Minimum Regulated Output Voltage For Burst Mode Operation or PWM Mode
Maximum Regulated Output Voltage
Forward Current Limit (Switch A)
PWM Mode (Note 5)
Forward Burst Current Limit (Switch A) Burst Mode Operation
Reverse Burst Current Limit (Switch D) Burst Mode Operation
Maximum Deliverable Output Current in 2.7V ⤠VIN3 ⤠5.5V, 2.75V ⤠VOUT3 ⤠5.5V
Burst Mode Operation
(Note 8)
2.65 2.75
5.5
5.6
l
2
2.5
3
l 200
275
350
l â30
0
30
50
RDS(ON)P
PMOS RDS(ON)
RDS(ON)N
NMOS RDS(ON)
ILEAK(P)
PMOS Switch Leakage
ILEAK(N)
NMOS Switch Leakage
RVOUT3
VOUT3 Pull-Down in Shutdown
DBUCK(MAX)
Maximum Buck Duty Cycle
DBOOST(MAX)
Maximum Boost Duty Cycle
tSS3
Soft-Start Time
Switching Regulator 4 (Boost)
Switches A, D
Switches B, C
Switches A, D
Switches B, C
PWM Mode
PWM Mode
0.22
0.17
â1
1
â1
1
10
l 100
75
0.5
IVIN4
IVOUT4
ILIMF4
VOUT4
VOV4
âVOV4
Input Current
Q-Current Drawn from Boost Output
NMOS Switch Current Limit
Output Voltage Adjust Range
Overvoltage Shutdown
Overvoltage Shutdown Hysteresis
FB4 > 0.8V, IVOUT4 = 0µA
Shutdown, VOUT4 = 0V
FB4 = 0V
(Note 5)
180
1
7.5
2000 2800
5
5.1
5.3
5.5
0.3
Burst Mode is a registered trademark of Linear Technology Corporation.
UNITS
µA
µA
µA
mA
Ω
Ω
%
kΩ
µA
µA
µA
V
V
A
mA
mA
mA
Ω
Ω
µA
µA
kΩ
%
%
ms
µA
µA
mA
mA
V
V
V
3586fb
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