LTC1430 LINER [Linear Technology], LTC1430 Datasheet - Page 3

• Manufacturer Part Number: LTC1430
• Description: High Power Step-Down Switching Regulator Controller
• Manufacturer: LINER [Linear Technology]

temperature range, otherwise specifications are at T
SYMBOL
V
V
I
A
gm
gm
I
I
t
t
DC
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to ground unless otherwise
specified.
Note 3: This parameter is guaranteed by correlation and is not tested
directly.
ELECTRICAL CHARACTERISTICS
IN
MAX
SS
r
NOV
IH
IL
V
, t
MAX
V
I
s
PARAMETER
SHDN Input High Voltage
SHDN Input Low Voltage
SHDN Input Current
Error Amplifier Open-Loop DC Gain
Error Amplifier Transconductance
I
I
Soft-Start Source Current
Driver Rise/Fall Time
Driver Non-Overlap Time
Maximum Duty Cycle
LIM
MAX
Amplifier Transconductance
Sink Current
CONDITIONS
(LTC1430I)
(LTC1430C)
(LTC1430I)
(Note 5)
V
V
V
V
Figure 3, PV
Figure 3, PV
V
V
V
I(MAX)
I(MAX)
SS
SS
COMP
COMP
COMP
= 0 (LTC1430C)
= 0 (LTC1430I)
= V
= V
= V
A
= V
= V
= 25 C. V
CC
CC
CC
CC
CC
CC1
CC1
, V
, V
(LTC1430C)
(LTC1430C)
(LTC1430I)
The
FB
FB
= PV
= PV
= 0 (LTC1430I)
= 1.265V (LTC1430I)
CC
CC2
CC2
denotes the specifications which apply over the full operating
= 5V unless otherwise noted. (Note 2)
= 5V
= 5V
Note 4: Supply current in normal operation is dominated by the current
needed to charge and discharge the external FET gates. This will vary with
the LTC1430 operating frequency, operating voltage and the external FETs
used.
Note 5: The I
normal (not current limited) operation, the I
LIM
amplifier can sink but cannot source current. Under
MIN
300
2.4
– 8
– 8
40
25
83
8
8
LIM
1300
TYP
650
650
–12
–12
130
48
12
12
80
90
90
88
0.1
output current will be zero.
LTC1430
1200
MAX
–16
–17
250
250
0.8
16
17
96
96
1
UNITS
3
Mho
Mho
Mho
dB
ns
ns
%
%
%
V
V
A
A
A
A
A