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| LTC3714_15 Datasheet, PDF (3/28 Pages) Linear Technology – Intel Compatible, Wide Operating Range, Step-Down Controller with Internal Op Amp | |||
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LTC3714
Electrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 15V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
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 Threshold
VIN(UVLOR)
Undervoltage Lockout Threshold
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
âVLDO(LOADREG) Internal VCC Load Regulation
VEXTVCC
EXTVCC Switchover Voltage
âVEXTVCC
EXTVCC Switch Drop Voltage
âVEXTVCC(HYS) EXTVCC Switchover Hysteresis
PGOOD Output
RUN/SS Pin Rising
RUN/SS Pin Falling
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
4
4.5
3.5
4.2
â0.5 â1.2 â3
0.8
1.8
3
l
3.4
3.9
l
3.5
4
2
3
2
3
3
4
1
2
20
20
20
20
l 4.7
l 4.5
5
5.3
â0.1 ±2
4.7
150 300
200
âVFBH
âVFBL
âVFB(HYS)
VPGL
VID DAC
PGOOD Upper Threshold
PGOOD Lower Threshold
PGOOD Hysteresis
PGOOD Low Voltage
VFB Rising
VFB Falling
VFB Returning
IPGOOD = 1mA
7.5
10 12.5
â7.5 â10 â12.5
1
2.5
0.15 0.4
VVID(T)
IVID(PULLUP)
VVID(PULLUP)
IVID(LEAK)
RVID
âVOSENSE
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
VVID0 to VVID4 = 0V
VVID0 to VVID4 Open
VVID0 to VVID4 = 5V, VRUN/SS = 0V
VOSENSE Programmed from
0.6V to 1.75V (Note 5)
0.4
1.2
2
â2.5
4.5
0.01
1
6
10
14
â0.45
0
0.25
UNITS
V
V
µA
µA
V
V
Ω
Ω
Ω
Ω
ns
ns
ns
ns
V
%
V
mV
mV
%
%
%
V
V
µA
V
µA
kΩ
%
VIN = 5V unless otherwise noted.
Internal Op Amp
VOS
IOS
IB
CMRR
Input Offset Voltage
Input Offset Current
Input Bias Current
Common Mode Rejection Ratio
VCM = 0V to (VCC â 1V)
VCM = 0V to 18V
400 1000
µV
4
10
nA
45
80
nA
100
dB
80
dB
3714f
3
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