 English |
|
|
|
|
|
|
|
| LTC3567 Datasheet, PDF (5/28 Pages) Linear Technology – High Effi ciency USB Power Manager Plus 1A Buck-Boost Converter with I2C Control | |||
| |||
| ◁ |
LTC3567
ELECTRICAL CHARACTERISTICS The l denotes the speciï¬cations which apply over the full operating
temperature range, otherwise speciï¬cations are at TA = 25°C. VBUS = 5V, VIN1 = VOUT1 = 3.8V, VBAT = 3.8V, DVCC = 3.3V, RPROG = 1k,
RCLPROG = 3.01k, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
tSU_STO
tHD_DAT (O)
tHD_DAT (I)
tSU_DAT
tLOW
tHIGH
tf
tr
tSP
Stop Condition Setup Time
Data Hold Time Output
Data Hold Time Input
Data Setup Time
SCL Clock Low Period
SCL Clock High Period
Clock/Data Fall Time
Clock/Data Rise Time
Input Spike Suppression Pulse
Width
CB = Capacitance of One BUS Line (pF)
CB = Capacitance of One BUS Line (pF)
0.6
0
0
100
1.3
0.6
20+0.1â¢CB
20+0.1â¢CB
μs
900
ns
ns
ns
μs
μs
300
ns
300
ns
50
ns
Buck-Boost Regulator
VIN1
VOUTUVLO
Input Supply Voltage
VOUT UVLO â VOUT Falling
VOUT UVLO â VOUT Rising
VIN1 Connected to VOUT Through Low
Impedance. Switching Regulator is
Disabled in UVLO
2.7
5.5
V
2.5
2.6
V
2.8
2.9
V
fOSC
Oscillator Frequency
l
1.8
2.25
2.7
MHz
IVIN1
Input Current
PWM Mode, IOUT1 = 0μA
Burst Mode® Operation, IOUT1 = 0μA
Shutdown
220
400
μA
13
20
μA
0
1
μA
VOUT1(LOW)
Minimum Regulated Output
Voltage
For Burst Mode Operation or
Synchronous PWM Operation
2.65
2.75
V
VOUT1(HIGH)
Maximum Regulated Output
Voltage
5.50
5.60
V
ILIMF1
IPEAK1(BURST)
Forward Current Limit (Switch A)
Forward Burst Current Limit
(Switch A)
PWM Mode
Burst Mode Operation
l
2
l
200
2.5
3
A
275
350
mA
IZERO1(BURST)
Reverse Burst Current Limit
(Switch D)
Burst Mode Operation
l
â30
0
30
mA
IMAX1(BURST)
Maximum Deliverable Output
2.7V ⤠VIN1 ⤠5.5V,
50
mA
Current in Burst Mode Operation 2.75V ⤠VOUT1 ⤠5.5V
(Note 6)
VFBHIGH1
Maximum Servo Voltage
Full Scale (1,1,1,1)
VFBLOW1
Minimum Servo Voltage
Zero Scale (0,0,0,0)
VLSB1
VFB1 Servo Voltage Step Size
IFB1
FB1 Input Current
VFB1 = 0.8V
RDS(ON)P
PMOS RDS(ON)
Switches A, D
RDS(ON)N
NMOS RDS(ON)
Switches B, C
ILEAK(P)
PMOS Switch Leakage
Switches A, D
ILEAK(N)
NMOS Switch Leakage
Switches B, C
RVOUT1
VOUT1 Pull-Down in Shutdown
DBUCK(MAX)
Maximum Buck Duty Cycle
PWM Mode
DBOOST(MAX)
Maximum Boost Duty Cycle
PWM Mode
tSS1
Soft-Start Time
Burst Mode is a registered trademark of Linear Technology Corporation.
l 0.780
l 0.405
-50
â1
â1
l
100
0.800
0.820
V
0.425
0.445
V
25
mV
50
nA
0.22
Ω
0.17
Ω
1
μA
1
μA
10
kΩ
%
75
%
0.5
ms
3567f
5
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese