English
Language : 

LTC3711 Datasheet, PDF (3/24 Pages) Linear Technology – 5-Bit Adjustable, Wide Operating Range, No RSENSE
◁
LTC3711
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are TA = 25°C. VIN = 15V unless otherwise noted.
SYMBOL
PARAMETER
VRUN/SS(ON) RUN Pin Start Threshold
VRUN/SS(LE)
RUN Pin Latchoff Enable Threshold
VRUN/SS(LT)
RUN Pin Latchoff Threshold
IRUN/SS(C)
Soft-Start Charge Current
IRUN/SS(D)
Soft-Start Discharge Current
VIN(UVLO)
Undervoltage Lockout
VIN(UVLOR)
Undervoltage Lockout Release
TG RUP
TG Driver Pull-Up On Resistance
TG RDOWN
TG Driver Pull-Down On Resistance
BG RUP
BG Driver Pull-Up On Resistance
BG RDOWN
BG Driver Pull-Down On Resistance
TG tr
TG Rise Time
TG tf
TG Fall Time
BG tr
BG Rise Time
BG tf
BG Fall Time
Internal VCC Regulator
VINTVCC
Internal VCC Voltage
∆VLDO(LOADREG) Internal VCC Load Regulation
VEXTVCC
EXTVCC Switchover Voltage
∆VEXTVCC
EXTVCC Switch Drop Voltage
∆VEXTVCC(HYS) EXTVCC Switchover Hysteresis
PGOOD Output
∆VFBH
∆VFBL
∆VFB(HYS)
VPGL
VID DAC
PGOOD Upper Threshold
PGOOD Lower Threshold
PGOOD Hysteresis
PGOOD Low Voltage
VVID(T)
IVID(PULLUP)
VVID(PULLUP)
IVID(LEAK)
RVID
∆VOSENSE
VID0-VID4 Logic Threshold Voltage
VID0-VID4 Pull-Up Current
VID0-VID4 Pull-Up Voltage
VID0-VID4 Leakage Current
Resistance from VOSENSE to VFB
DAC Output Accuracy
CONDITIONS
RUN/SS Pin Rising
RUN/SS Pin Falling
VRUN/SS = 0V
VRUN/SS = 4.5V, VFB = 0V
VIN Falling
VIN Rising
TG High
TG Low
BG High
BG Low
CLOAD = 3300pF
CLOAD = 3300pF
CLOAD = 3300pF
CLOAD = 3300pF
6V < VIN < 30V, VEXTVCC = 4V
ICC = 0mA to 20mA, VEXTVCC = 4V
ICC = 20mA, VEXTVCC Rising
ICC = 20mA, VEXTVCC = 5V
VFB Rising
VFB Falling
VFB Returning
IPGOOD = 5mA
VVID0 to VVID4 = 0V
VVID0 to VVID4 Open
VVID0 to VVID4 = 5V, VRUN/SS = 0V
VOSENSE Programmed from
0.925V to 2V (Note 5)
MIN TYP MAX UNITS
q 0.8
1.5
2
V
4
4.5
V
3.5
4.2
V
– 0.5 – 1.2
–3
µA
0.8
1.8
3
µA
q
3.4
3.9
V
q
3.5
4
V
2
3
Ω
2
3
Ω
3
4
Ω
1
2
Ω
20
ns
20
ns
20
ns
20
ns
q 4.7
5
5.3
V
– 0.1
±2
%
q 4.5
4.7
V
150 300
mV
200
mV
5.5
7.5
9.5
%
– 5.5 – 7.5 – 9.5
%
1
2
%
0.15
0.4
V
0.4
1.2
2
V
– 2.5
µA
4.5
V
0.01
1
µA
6
10
14
KΩ
– 0.25
0
0.25
%
Note 1: Absolute Maximum Ratings are those values beyond which the life of
a device may be impaired.
Note 2: The LTC3711E 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 3: TJ is calculated from the ambient temperature TA and power
dissipation PD as follows:
LTC3711EGN: TJ = TA + (PD • 130°C/W)
Note 4: The LTC3711 is tested in a feedback loop that adjusts VFB to achieve
a specified error amplifier output voltage (ITH).
Note 5: The LTC3711 VID DAC is tested in a feedback loop that adjusts
VOSENSE to achieve a specified feedback voltage (VFB = 0.8V) for each DAC VID
code.
3711f
3
 ▷