ltc3566 Linear Technology Corporation, ltc3566 Datasheet - Page 5

• Manufacturer Part Number: ltc3566
• Description: High Ef?ciency Usb Power Manager Plus 1a Buck-boost Converter
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
V
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 LTC3566E 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 includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
SYMBOL
V
V
I
I
I
I
V
I
R
R
I
I
R
D
D
t
LIMF1
PEAK1(BURST)
ZERO1(BURST)
MAX1(BURST)
FB1
LEAK(P)
LEAK(N)
SS1
IN1
OUT1(LOW)
OUT1(HIGH)
FB1
DS(ON)P
DS(ON)N
VOUT1
BUCK(MAX)
BOOST(MAX)
= V
OUT1
= 3.8V unless otherwise noted.
PARAMETER
Minimum Regulated Output Voltage
Maximum Regulated Output Voltage
Forward Current Limit (Switch A)
Forward Burst Current Limit (Switch
A)
Reverse Burst Current Limit (Switch
D)
Maximum Deliverable Output Current
in Burst Mode Operation
Feedback Servo Voltage
FB1 Input Current
PMOS R
NMOS R
PMOS Switch Leakage
NMOS Switch Leakage
V
Maximum Buck Duty Cycle
Maximum Boost Duty Cycle
Soft-Start Time
OUT1
Pull-Down in Shutdown
DS(ON)
DS(ON)
CONDITIONS
For Burst Mode Operation or
Synchronous PWM Operation
PWM Mode
Burst Mode Operation
Burst Mode Operation
2.5V ≤ V
(Note 6)
V
Switches A, D
Switches B, C
Switches A, D
Switches B, C
PWM Mode
PWM Mode
FB1
A
= 25°C. V
= 0.8V
IN1
The
≤ 5.5V, 2.75V ≤ V
●
BUS
denotes the specifi cations which apply over the full operating
= 5V, V
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
measured current given by:
Note 5: h
with indicated PROG resistor.
Note 6: Guaranteed by design.
V
CLPROG
BAT
OUT
= 3.8V, DV
C/10
≤ 5.5V
/R
is expressed as a fraction of measured full charge current
CLPROG
CC
●
●
●
●
●
• (h
= 3.3V, R
CLPROG
0.780
MIN
5.50
200
–30
–50
100
50
–1
–1
2
+ 1)
CLPROG
0.800
= 3.01k, R
2.65
5.60
0.22
0.17
TYP
275
2.5
0.5
10
75
0
LTC3566
PROG
0.820
MAX
2.75
350
30
50
3
1
1
VBUSQ
= 1k,
, and
UNITS
5
3566p
mA
mA
mA
kΩ
ms
nA
μA
μA
%
%
Ω
Ω
V
V
A
V