LTC3566/LTC3566-2
5
3566fb
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
specifi cations from 0°C to 85°C. Specifi cations 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.
ELECTRICAL CHARACTERISTICS
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations 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)
Maximum Regulated Output Voltage 5.50 5.60 V
I
LIMF1
Forward Current Limit (Switch A) PWM Mode
●
2 2.5 3 A
I
PEAK1(BURST)
Forward Burst Current Limit (Switch
A)
Burst Mode Operation
●
200 275 350 mA
I
ZERO1(BURST)
Reverse Burst Current Limit (Switch
D)
Burst Mode Operation
●
–30 0 30 mA
I
MAX1(BURST)
Maximum Deliverable Output Current
in Burst Mode Operation
2.7V ≤ V
IN1
≤ 5.5V, 2.75V ≤ V
OUT
≤ 5.5V
(Note 6)
50 mA
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
V
OUT1
Pull-Down in Shutdown 10 kΩ
D
BUCK(MAX)
Maximum Buck Duty Cycle PWM Mode
●
100 %
D
BOOST(MAX)
Maximum Boost Duty Cycle PWM Mode 75 %
t
SS1
Soft-Start Time 0.5 ms
Junction temperatures will exceed 125°C when overtemperature protection
is active. Continuous operation above the specifi ed 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.
