ltc3713 Linear Technology Corporation, ltc3713 Datasheet - Page 3

• Manufacturer Part Number: ltc3713
• Description: Low Input Voltage, High Power, No Rsense Synchronous Buck Dc/dc Controller
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are T
SYMBOL
I
I
UVLO
UVLOR
TG R
TG R
BG R
BG R
TG t
TG t
BG t
BG t
Internal V
V
PGOOD Output
V
Boost Regulator
V
V
I
V
I
f
DC
I
V
I
V
V
I
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: T
dissipation P
Note 3: The LTC3713 is tested in a feedback loop that adjusts V
RUN/SS(C)
RUN/SS(D)
Q(VIN2)
VFB2
BOOST
LIM(BOOST)
SWLKG(BOOST)
SHDN
INTVCC
PGL
IN2(MIN)
IN2(MAX)
FB2
CESAT(BOOST)
SHDN(HIGH)
SHDN(LOW)
V
V
V
V
V
LDO(LOADREG)
FB1H
FB1L
FB(HYS)
FB2(LINEREG)
BOOST(MAX)
LTC3713EG: T
r
f
r
f
UP
DOWN
UP
DOWN
J
CC
is calculated from the ambient temperature T
Regulator
D
as follows:
J
PARAMETER
Soft-Start Charge Current
Soft-Start Discharge Current
V
V
TG Driver Pull-Up On Resistance
TG Driver Pull-Down On Resistance
BG Driver Pull-Up On Resistance
BG Driver Pull-Down On Resistance
TG Rise Time
TG Fall Time
BG Rise Time
BG Fall Time
Internal V
Internal V
PGOOD Upper Threshold
PGOOD Lower Threshold
PGOOD Hysteresis
PGOOD Low Voltage
Minimum Operating Voltage
Maximum Operating Voltage
Input DC Supply Current (V
V
V
BOOST Reference Line Regulation
BOOST Switching Frequency
BOOST Maximum Duty Cycle
BOOST Switch Current Limit
BOOST Switch V
BOOST Switch Leakage Current
SHDN Input Voltage High
SHDN Input Voltage Low
SHDN Pin Bias Current
= T
IN1
IN1
FB2
FB2
Normal
Shutdown
A
Undervoltage Lockout
Undervoltage Lockout Release
Pin Bias Current
+ (P
Feedback Voltage
D
CC
CC
• 130 C/W)
Voltage
Load Regulation
CESAT
IN2
)
A
A
and power
= 25 C. V
FB
CONDITIONS
V
V
V
V
TG High
TG Low
BG High
BG Low
C
C
C
C
6V < V
I
V
V
V
I
0 C to 70 C
–40 C to 85 C
1.5V V
0 C to 70 C
–40 C to 85 C
I
V
V
V
(Note 5)
CC
PGOOD
SW
RUN/SS
RUN/SS
IN1
IN1
LOAD
LOAD
LOAD
LOAD
FB1
FB1
FB1
SW
SHDN
SHDN
to
The
= 0mA to 20mA
= 300mA
Rising
Falling
= 5V
Rising
Falling
Returning
IN1
= 3300pF
= 3300pF
= 3300pF
= 3300pF
IN
= 3V
= 0V
= 5mA
= 0V
= 4.5V, V
IN
< 30V
= 15V, V
denotes specifications which apply over the full operating
10V
achieve a specified error amplifier output voltage (I
Note 4: The LTC3713E is guaranteed to meet performance specifications
from 0 C to 70 C. Specifications over the –40 C to 85 C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 5: Current limit guaranteed by design and/or correlation to static test.
FB
IN2
= 0V
= 1.5V unless otherwise noted.
1.205
1.200
– 0.5
– 5.5
MIN
500
0.8
4.7
5.5
1.0
0.9
82
1
– 1.2
–0.1
– 7.5
0.15
0.01
1.23
0.02
0.01
0.01
TYP
800
300
1.8
3.4
3.5
7.5
0.9
1.4
20
20
20
20
27
86
25
2
2
3
1
5
1
3
TH
).
LTC3713
1.255
1.260
MAX
– 9.5
350
3.9
5.3
9.5
0.4
1.5
4.5
0.2
1.8
1.9
0.3
0.1
–3
10
80
50
3
4
3
3
4
2
2
1
1
2
UNITS
3713fa
3
MHz
MHz
%/V
mA
mA
mV
nA
ns
ns
ns
ns
%
%
%
%
%
A
A
V
V
V
V
V
V
A
V
V
A
V
V
A
A