Datasheet

3
LTC1629-6
16296f
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 15V, V
RUN/SS
= 5V unless otherwise noted.
I
SCL
RUN/SS Discharge Current Soft Short Condition V
EAIN
= 0.4V; V
RUN/SS
= 4.5V 0.5 2 4 µA
I
SDLDO
Shutdown Latch Disable Current V
EAIN
= 0.4V 1.6 5 µA
I
SENSE
Total Sense Pins Source Current Each Channel; V
SENSE1
–
, 2
– = V
SENSE1
+
, 2
+ = 0V –85 –60 µA
DF
MAX
Maximum Duty Factor In Dropout 98 99.5 %
Top Gate Transition Time:
TG1, 2 t
r
Rise Time C
LOAD
= 3300pF 30 90 ns
TG1, 2 t
f
Fall Time C
LOAD
= 3300pF 40 90 ns
Bottom Gate Transition Time:
BG1, 2 t
r
Rise Time C
LOAD
= 3300pF 30 90 ns
BG1, 2 t
f
Fall Time C
LOAD
= 3300pF 20 90 ns
TG/BG t
1D
Top Gate Off to Bottom Gate On Delay
Synchronous Switch-On Delay Time C
LOAD
= 3300pF Each Driver 90 ns
BG/TG t
2D
Bottom Gate Off to Top Gate On Delay
Top Switch-On Delay Time C
LOAD
= 3300pF Each Driver 90 ns
t
ON(MIN)
Minimum On-Time Tested with a Square Wave (Note 5) 180 ns
Internal V
CC
Regulator
V
INTVCC
Internal V
CC
Voltage 6V < V
IN
< 30V; V
EXTVCC
= 4V 4.8 5.0 5.2 V
V
LDO
INT INTV
CC
Load Regulation I
CC
= 0 to 20mA; V
EXTVCC
= 4V 0.2 1.0 %
V
LDO
EXT EXTV
CC
Voltage Drop I
CC
= 20mA; V
EXTVCC
= 5V 80 160 mV
V
EXTVCC
EXTV
CC
Switchover Voltage I
CC
= 20mA, EXTV
CC
Ramping Positive ● 4.5 4.7 V
V
LDOHYS
EXTV
CC
Switchover Hysteresis I
CC
= 20mA, EXTV
CC
Ramping Negative 0.2 V
Oscillator and Phase-Locked Loop
f
NOM
Nominal Frequency V
PLLFLTR
= 1.2V 190 220 250 kHz
f
LOW
Lowest Frequency V
PLLFLTR
= 0V 120 140 160 kHz
f
HIGH
Highest Frequency V
PLLFLTR
≥ 2.4V 280 310 360 kHz
R
PLLIN
PLLIN Input Resistance 50 kΩ
I
PLLFLTR
Phase Detector Output Current
Sinking Capability f
PLLIN
< f
OSC
–15 µA
Sourcing Capability f
PLLIN
> f
OSC
15 µA
R
RELPHS
Controller 2-Controller 1 Phase V
PHASMD
= 0V, Open 180 Deg
V
PHASMD
= 5V 240 Deg
CLKOUT Phase (Relative to Controller 1) V
PHASMD
= 0V 60 Deg
V
PHASMD
= Open 90 Deg
V
PHASMD
= 5V 120 Deg
CLK
HIGH
Clock High Output Voltage 4 V
CLK
LOW
Clock Low Output Voltage 0.2 V
PGOOD Output
V
PGL
PGOOD Voltage Low I
PGOOD
= 2mA 0.1 0.3 V
I
PGOOD
PGOOD Leakage Current V
PGOOD
= 5V ±1 µA
V
PG
PGOOD Trip Level, Either Controller V
EAIN
with Respect to Set Output Voltage
V
EAIN
Ramping Negative –8 –10 –12 %
V
EAIN
Ramping Positive 8 10 12 %