LTC1709EG-9 查看數據表（PDF） - Linear Technology
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LTC1709EG-9
Linear Technology
LTC1709EG-9 Datasheet PDF : 28 Pages
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LTC1709-8/LTC1709-9
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 15V, VBIAS = 5V, VRUN/SS = 5V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP
VRUN/SSLO
ISCL
ISDLHO
ISENSE
DFMAX
TG1, 2 tr
TG1, 2 tf
BG1, 2 tr
BG1, 2 tf
TG/BG t1D
RUN/SS Pin Latchoff Arming
RUN/SS Discharge Current
Shutdown Latch Disable Current
Total Sense Pins Source Current
Maximum Duty Factor
Top Gate Transition Time:
Rise Time
Fall Time
Bottom Gate Transition Time:
Rise Time
Fall Time
Top Gate Off to Bottom Gate On Delay
Synchronous Switch-On Delay Time
VRUN/SS Rising from 3V
Soft Short Condition VEAIN = 0.5V, VRUN/SS = 4.5V
VEAIN = 0.5V
Each Channel: VSENSE1–, 2 – = VSENSE1+, 2+ = 0V
In Dropout
(Note 6)
CLOAD = 3300pF
CLOAD = 3300pF
(Note 6)
CLOAD = 3300pF
CLOAD = 3300pF
CLOAD = 3300pF Each Driver (Note 6)
4.1
0.5
2
1.6
– 85 – 60
98
99.5
30
40
30
20
90
BG/TG t2D Bottom Gate Off to Top Gate On Delay CLOAD = 3300pF Each Driver (Note 6)
90
Top Switch-On Delay Time
tON(MIN)
Minimum On-Time
Internal VCC Regulator
VINTVCC
Internal VCC Voltage
VLDO INT INTVCC Load Regulation
VLDO EXT EXTVCC Voltage Drop
VEXTVCC
EXTVCC Switchover Voltage
VLDOHYS EXTVCC Switchover Hysteresis
VID Parameters
Tested with a Square Wave (Note 7)
6V < VIN < 30V, VEXTVCC = 4V
ICC = 0 to 20mA, VEXTVCC = 4V
ICC = 20mA, VEXTVCC = 5V
ICC = 20mA, EXTVCC Ramping Positive
ICC = 20mA, EXTVCC Ramping Negative
180
4.8
5.0
0.2
80
q 4.5
4.7
0.2
VBIAS
RATTEN
Operating Supply Voltage Range
Resistance Between ATTENIN
and ATTENOUT Pins
LTC1709-8
LTC1709-9
2.7
20
10
ATTENERR Resistive Divider Error
LTC1709-8: VID4 = 0; LTC1709-9
LTC1709-8: VID4 = 1
q – 0.25
q –0.35
RPULLUP VID0–VID4 Pull-Up Resistance
VIDTHLOW VID0–VID4 Logic Threshold Low
VIDTHHIGH VID0–VID4 Logic Threshold High
VIDLEAK VID0–VID4 Leakage
Oscillator and Phase-Locked Loop
(Note 8)
VBIAS < VID0–VID4 < 7V
40
1.6
0.1
fNOM
fLOW
fHIGH
RPLLIN
IPLLFLTR
RRELPHS
Nominal Frequency
Lowest Frequency
Highest Frequency
PLLIN Input Resistance
Phase Detector Output Current
Sinking Capability
Sourcing Capability
Controller 2-Controller 1 Phase
VPLLFLTR = 1.2V
VPLLFLTR = 0V
VPLLFLTR ≥ 2.4V
fPLLIN < fOSC
fPLLIN > fOSC
190 220
120 140
280 320
50
– 15
15
180
MAX UNITS
4.5
V
4
µA
5
µA
µA
%
90
ns
90
ns
90
ns
90
ns
ns
ns
ns
5.2
V
1.0
%
160
mV
V
V
5.5
V
kΩ
kΩ
0.25
%
0.25
%
kΩ
0.4
V
V
1
µA
250
kHz
160
kHz
360
kHz
kΩ
µA
µA
Deg
3
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