LTC1504A
ELECTRICAL CHARACTERISTICS
VCC = 5V, TA = 25°C unless otherwise specified. (Note 2)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
SS
Soft Start Source Current
V
V
SS
= 0V, Commercial
= 0V, Industrial
●
●
–8
–8
–12
–12
–16
–17
µA
µA
SS
t , t
Output Switch Rise/Fall Time
Maximum Duty Cycle
10% to 90% Ouput Swing
= V
●
●
5
50
ns
%
r
f
DC
MAX
V
100
COMP
CC
Note 4: LTC1504A quiescent current is dominated by the gate drive
current drawn by the onboard power switches. With FB or SENSE pulled to
the output stage will stop switching and the static quiescent current
can be observed. With FB or SENSE hooked up normally, the output stage
will be switching and total dynamic supply current can be measured.
The
● denotes specifications which apply over the full operating
temperature range.
V
CC
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the 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 5: Fixed output parts will appear to have g and A values 2.6 times
mV
V
lower than the specified values, due to the internal divider resistors.
Note 6: The I amplifier can sink but not source current. Under normal
LIM
Note 3: This parameter is guaranteed by correlation and is not tested
directly.
(not current limited) operation, the I output current will be zero.
LIM
Note 7: Contact factory for guaranteed specifications at 2.7V supply.
W
U
TYPICAL PERFORMANCE CHARACTERISTICS
Switch On-Resistance vs
Temperature
Supply Current vs Supply Voltage
Supply Current vs Temperature
14
12
10
8
10
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
T
= 25°C
= 0
V
= 5V
= 0
A
CC
I
I
OUT
OUT
V
= V
OUT
FB
V
= 3.3V
CC
1
V
FB
= V
OUT
6
V
CC
= 5V
4
V
= V
CC
FB
V
CC
= 10V
2
V
FB
= V
CC
0
2.5
0.1
–50 –25
7.5
SUPPLY VOLTAGE (V)
10
5
0
25
50
75 100 125
50
TEMPERATURE (°C)
100 125
–50 –25
0
25
75
TEMPERATURE (°C)
1504A • TPC02
1504A • TPC01
1504A • TPC03
Current Limit Threshold vs
Temperature
Shutdown Threshold vs
Supply Voltage
Current Limit Threshold vs RIMAX
500
450
400
350
300
250
200
150
100
50
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
700
600
500
400
300
200
100
0
V
= 5V
CC
T
V
CC
= 25°C
= 5V
A
R
= 47k
IMAX
R
= 22k
IMAX
0
–50 –25
0
25
50
75 100 125
3
5
7
10
10k
100k
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
R
IMAX
(Ω)
1504A • TPC05
1504A • TPC07
1504A • TPC04
3
Linear [ Linear ]
