LTC1629 Ver la hoja de datos (PDF) - Linear Technology
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LTC1629 Datasheet PDF : 28 Pages
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LTC1629/LTC1629-PG
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 15V, VRUN/SS = 5V unless otherwise noted.
SYMBOL PARAMETER
ISENSE
DFMAX
TG1, 2 tr
TG1, 2 tf
BG1, 2 tr
BG1, 2 tf
TG/BG t1D
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
BG/TG t2D Bottom Gate Off to Top Gate On Delay
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
Oscillator and Phase-Locked Loop
fNOM
fLOW
fHIGH
RPLLIN
IPLLFLTR
Nominal Frequency
Lowest Frequency
Highest Frequency
PLLIN Input Resistance
Phase Detector Output Current
Sinking Capability
Sourcing Capability
RRELPHS Controller 2-Controller 1 Phase
CLKOUT Phase (Relative to Controller 1)
CLKHIGH Clock High Output Voltage
CLKLOW Clock Low Output Voltage
PGOOD Output (LTC1629-PG Only)
VPGL
IPGOOD
VPG
PGOOD Voltage Low
PGOOD Leakage Current
PGOOD Trip Level, Either Controller
Differential Amplifier/Op Amp Gain Block (Note 5)
ADA
CMRRDA
RIN
Gain
Common Mode Rejection Ratio
Input Resistance
CONDITIONS
Each Channel; VSENSE1–, 2– = VSENSE1+, 2+ = 0V
In Dropout
CLOAD = 3300pF
CLOAD = 3300pF
CLOAD = 3300pF
CLOAD = 3300pF
CLOAD = 3300pF Each Driver
CLOAD = 3300pF Each Driver
Tested with a Square Wave (Note 6)
6V < VIN < 30V; VEXTVCC = 4V
ICC = 0 to 20mA; VEXTVCC = 4V
ICC = 20mA; VEXTVCC = 5V; LTC1629
ICC = 20mA; VEXTVCC = 5V; LTC1629-PG
ICC = 20mA, EXTVCC Ramping Positive
ICC = 20mA, EXTVCC Ramping Negative
VPLLFLTR = 1.2V
VPLLFLTR = 0V
VPLLFLTR ≥ 2.4V
fPLLIN < fOSC
fPLLIN > fOSC
VPHASMD = 0V, Open
VPHASMD = 5V
VPHASMD = 0V
VPHASMD = Open
VPHASMD = 5V
IPGOOD = 2mA
VPGOOD = 5V
VEAIN with Respect to Set Output Voltage
VEAIN Ramping Negative
VEAIN Ramping Positive
Differential Amp Mode
Differential Amp Mode; 0V < VCM < 5V
Differential Amp Mode; Measured at VOS+ Input
MIN TYP MAX UNITS
– 85 – 60
µA
98
99.5
%
30
90
ns
40
90
ns
30
90
ns
20
90
ns
90
ns
90
ns
180
ns
4.8
5.0
5.2
V
0.2
1.0
%
120 240
mV
80
160
mV
q 4.5
4.7
V
0.2
V
190 220 250
kHz
120 140 160
kHz
280 310 360
kHz
50
kΩ
– 15
µA
15
µA
180
Deg
240
Deg
60
Deg
90
Deg
120
Deg
4
V
0.2
V
0.1
0.3
V
±1
µA
–6
– 7.5 – 9.5
%
6
7.5
9.5
%
0.995
1
1.005
V/V
46
55
dB
80
kΩ
3
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