LTC3566-2_15 Datasheet, PDF (5/28 Pages) Linear Technology – High Efficiency USB Power Manager Plus 1A Buck-Boost Converter

LTC3566/LTC3566-2
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_BUS = 5V, V_BAT = 3.8V, DV_CC = 3.3V, R_CLPROG = 3.01k, R_PROG = 1k,
V_IN1 = V_OUT1 = 3.8V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
V_OUT1(LOW)
Minimum Regulated Output Voltage For Burst Mode Operation or
Synchronous PWM Operation
2.65
2.75
V
V_OUT1(HIGH)
I_LIMF1
I_PEAK1(BURST)
Maximum Regulated Output Voltage
Forward Current Limit (Switch A) PWM Mode
Forward Burst Current Limit (Switch Burst Mode Operation
A)
5.50
5.60
V
●
2
2.5
3
A
●
200
275
350
mA
I_ZERO1(BURST)
Reverse Burst Current Limit (Switch Burst Mode Operation
D)
●
–30
0
30
mA
I_MAX1(BURST) Maximum Deliverable Output Current 2.7V ≤ V_IN1 ≤ 5.5V, 2.75V ≤ V_OUT ≤ 5.5V
50
mA
in Burst Mode Operation
(Note 6)
V_FB1
Feedback Servo Voltage
● 0.780
0.800
0.820
V
I_FB1
FB1 Input Current
V_FB1 = 0.8V
–50
50
nA
R_DS(ON)P
PMOS R_DS(ON)
Switches A, D
0.22
Ω
R_DS(ON)N
NMOS R_DS(ON)
Switches B, C
0.17
Ω
I_LEAK(P)
PMOS Switch Leakage
Switches A, D
–1
1
μA
I_LEAK(N)
NMOS Switch Leakage
Switches B, C
–1
1
μA
R_VOUT1
D_BUCK(MAX)
V_OUT1 Pull-Down in Shutdown
Maximum Buck Duty Cycle
PWM Mode
10
kΩ
●
100
%
D_BOOST(MAX)
Maximum Boost Duty Cycle
PWM Mode
75
%
t_SS1
Soft-Start Time
0.5
ms
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3566 family is guaranteed to meet performance
specifications from 0°C to 85°C. Specifications over the –40°C to 85°C
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 3: The LTC3566 family includes overtemperature protection that is
intended to protect the device during momentary overload conditions.
Junction temperatures will exceed 125°C when overtemperature protection
is active. Continuous operation above the specified maximum operating
junction temperature may impair device reliability.
Note 4: Total input current is the sum of quiescent current, I_VBUSQ,
and measured current given by:
V_CLPROG/R_CLPROG • (h_CLPROG + 1)
Note 5: h_C/10 is expressed as a fraction of measured full charge current
with indicated PROG resistor.
Note 6: Guaranteed by design.
3566fb
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