LTC1430
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 5V unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
V
V
SHDN Input High Voltage
SHDN Input Low Voltage
SHDN Input Current
●
●
●
●
2.4
IH
IL
0.8
V
I
±0.1
±1
µA
dB
IN
A
Error Amplifier Open-Loop DC Gain (LTC1430I)
40
48
V
gm
Error Amplifier Transconductance
(LTC1430C)
(LTC1430I)
650
650
µMho
µMho
V
●
300
1200
gm
I
I
Amplifier Transconductance
Sink Current
(Note 5)
1300
µMho
I
LIM
I
I
V
V
= V (LTC1430C)
= V (LTC1430I)
●
●
8
8
12
12
16
17
µA
µA
MAX
MAX
I(MAX)
I(MAX)
CC
CC
Soft-Start Source Current
V
SS
V
SS
= 0 (LTC1430C)
= 0 (LTC1430I)
●
●
–8
–8
–12
–12
–16
–17
µA
µA
SS
t , t
Driver Rise/Fall Time
Driver Non-Overlap Time
Maximum Duty Cycle
Figure 3, PV
Figure 3, PV
= PV
= PV
= 5V
= 5V
80
130
90
250
250
96
ns
ns
%
r
s
CC1
CC1
CC2
t
25
NOV
CC2
DC
MAX
V
COMP
= V (LTC1430C)
●
CC
V
COMP
V
COMP
= V , V = 0 (LTC1430I)
●
●
90
88
96
%
%
CC FB
= V , V = 1.265V (LTC1430I)
83
CC FB
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 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 amplifier can sink but cannot source current. Under
LIM
normal (not current limited) operation, the I output current will be zero.
LIM
Note 3: This parameter is guaranteed by correlation and is not tested
directly.
3
Linear [ Linear ]
