LTC1629 LINER [Linear Technology], LTC1629 Datasheet - Page 3

• Manufacturer Part Number: LTC1629
• Description: PolyPhase, High Efficiency, Synchronous Step-Down Switching Regulators
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL
I
DF
TG1, 2 t
TG1, 2 t
BG1, 2 t
BG1, 2 t
TG/BG t
BG/TG t
t
Internal V
V
V
V
V
V
Oscillator and Phase-Locked Loop
f
f
f
R
I
R
CLKOUT
CLK
CLK
PGOOD Output (LTC1629-PG Only)
V
I
V
Differential Amplifier/Op Amp Gain Block (Note 5)
A
CMRR
R
SENSE
ON(MIN)
NOM
LOW
HIGH
PLLFLTR
PGOOD
INTVCC
LDO
LDO
EXTVCC
LDOHYS
PGL
PG
DA
PLLIN
RELPHS
IN
MAX
HIGH
LOW
INT
EXT
DA
1D
2D
r
f
r
f
CC
Regulator
PARAMETER
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
Bottom Gate Off to Top Gate On Delay
Top Switch-On Delay Time
Minimum On-Time
Internal V
INTV
EXTV
EXTV
EXTV
Nominal Frequency
Lowest Frequency
Highest Frequency
PLLIN Input Resistance
Phase Detector Output Current
Controller 2-Controller 1 Phase
Phase (Relative to Controller 1)
Clock High Output Voltage
Clock Low Output Voltage
PGOOD Voltage Low
PGOOD Leakage Current
PGOOD Trip Level, Either Controller
Gain
Common Mode Rejection Ratio
Input Resistance
Sinking Capability
Sourcing Capability
CC
CC
CC
CC
Load Regulation
Voltage Drop
Switchover Voltage
Switchover Hysteresis
CC
Voltage
CONDITIONS
Each Channel; V
In Dropout
C
C
C
C
C
C
Tested with a Square Wave (Note 6)
6V < V
I
I
I
I
I
V
V
V
f
f
V
V
V
V
V
I
V
V
Differential Amp Mode
Differential Amp Mode; 0V < V
Differential Amp Mode; Measured at V
CC
CC
CC
CC
CC
PLLIN
PLLIN
PGOOD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
PLLFLTR
PLLFLTR
PLLFLTR
PHASMD
PHASMD
PHASMD
PHASMD
PHASMD
PGOOD
EAIN
= 0 to 20mA; V
= 20mA; V
= 20mA; V
= 20mA, EXTV
= 20mA, EXTV
V
V
A
EAIN
EAIN
with Respect to Set Output Voltage
< f
> f
= 3300pF
= 3300pF
= 3300pF
= 3300pF
= 3300pF Each Driver
= 3300pF Each Driver
IN
= 25 C. V
= 2mA
= 5V
OSC
OSC
< 30V; V
= 1.2V
= 0V
= 0V, Open
= 5V
= 0V
= Open
= 5V
Ramping Negative
Ramping Positive
2.4V
The
EXTVCC
EXTVCC
SENSE1
EXTVCC
IN
CC
CC
EXTVCC
denotes the specifications which apply over the full operating
= 15V, V
Ramping Positive
Ramping Negative
= 5V; LTC1629
= 5V; LTC1629-PG
–
, 2
= 4V
= 4V
– = V
CM
RUN/SS
SENSE1
< 5V
OS
+
= 5V unless otherwise noted.
, 2
+ Input
LTC1629/LTC1629-PG
+ = 0V
0.995
MIN
– 85
190
120
280
4.8
4.5
98
– 6
46
4
6
99.5
– 7.5
TYP
– 60
– 15
180
120
220
140
310
180
240
120
5.0
0.2
4.7
0.2
0.1
30
40
30
20
90
90
80
50
60
90
55
80
7.5
1
15
1.005
MAX
– 9.5
240
160
250
160
360
5.2
1.0
0.2
0.3
90
90
90
90
9.5
1
UNITS
3
Deg
Deg
Deg
Deg
Deg
kHz
kHz
kHz
V/V
mV
mV
k
k
dB
ns
ns
ns
ns
ns
ns
ns
%
%
%
%
A
V
V
V
A
A
V
V
V
A