LTC3586-1_15 Datasheet, PDF (4/36 Pages) Linear Technology – High Efficiency USB Power Manager with Boost, Buck-Boost and Dual Bucks

LTC3586/LTC3586-1
Electrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_BUS = 5V, BAT = 3.8V, V_IN1 = V_IN2 = V_IN3 = V_IN4 = V_OUT3 = 3.8V,
V_OUT4 = 5V, R_PROG = 1k, R_CLPROG = 3.01k, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
R_{ON_CHG}
T_LIM
Battery Charger Power FET
On-Resistance (Between V_OUT and BAT)
Junction Temperature in Constant
Temperature Mode
0.18
Ω
110
°C
NTC
V_COLD
V_HOT
V_DIS
Cold Temperature Fault Threshold
Voltage
Hot Temperature Fault Threshold
Voltage
NTC Disable Threshold Voltage
Rising Threshold
Hysteresis
Falling Threshold
Hysteresis
Falling Threshold
Hysteresis
75.0
76.5
78.0 %V_BUS
1.5
%V_BUS
33.4
34.9
36.4 %V_BUS
1.73
%V_BUS
0.7
1.7
2.7
%V_BUS
50
mV
I_NTC
Ideal Diode
NTC Leakage Current
V_NTC = V_BUS = 5V
–50
50
nA
V_FWD
Forward Voltage
R_DROPOUT
Internal Diode On-Resistance, Dropout
I_{MAX_DIODE}
Internal Diode Current Limit
Always On 3.3V Supply
V_BUS = 0V, I_VOUT = 10mA
I_VOUT = 10mA
V_BUS = 0V
2
mV
15
mV
0.18
Ω
1.6
A
V_LDO3V3
Regulated Output Voltage
0mA < I_LDO3V3 < 20mA
R_{CL_LDO3V3}
Closed-Loop Output Resistance
R_{OL_LDO3V3}
Dropout Output Resistance
Logic Input (EN1, EN2, EN3, EN4, MODE, ILIM0, ILIM1, FAULT)
3.1
3.3
3.5
V
4
Ω
23
Ω
V_IL
V_IH
I_PD
FAULT Output
Logic Low Input Voltage
Logic High Input Voltage
Pull-Down Current
0.4
V
1.2
V
1
µA
V_FAULT
FAULT Pin Output Low Voltage
FAULT Delay
I_FAULT = 5mA
65
100
mV
14
ms
FBx Voltage Threshold
for FAULT (x = 1, 2, 3, 4)
0.736
V
Switching Regulators 1, 2, 3 and 4
V_{IN1, 2, 3, 4}
V_OUTUVLO
Input Supply Voltage
V_OUT UVLO—V_OUT Falling
V_OUT UVLO—V_OUT Rising
V_IN1,2,3,4 Connected to V_OUT Through
Low Impedance. Switching Regulators
are Disabled in UVLO
2.7
5.5
V
2.5
2.6
V
2.8
2.9
V
f_OSC
I_{FB1, 2, 3, 4}
V_{FB1, 2, 3, 4}
Oscillator Frequency
FBx Input Current
V_FBx Servo Voltage
V_FB1,2,3,4 = 0.85V
1.8
2.25
2.7
MHz
– 50
50
nA
l 0.78 0.80 0.82
V
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