Datasheet

LT3029
4
3029fb
For more information www.linear.com/LT3029
Typical perForMance characTerisTics
Typical Dropout Voltage Guaranteed Dropout Voltage
Dropout Voltage vs Temperature
Quiescent Current (per Channel)
elecTrical characTerisTics
Note 7: GND pin current is tested with V
IN
= 2.437V and a current source
load. This means the device is tested while operating in its dropout region
or at the minimum input voltage specification. This is the worst-case
GND pin current. The GND pin current decreases slightly at higher input
voltages. Total GND pin current equals the sum of output 1 and output 2
GND pin currents.
Note 8: ADJ1/ADJ2 pin bias current flows into the pin.
Note 9: The LT3029 contains current limit foldback circuitry. See the
Typical Performance Characteristics for current limit as a function of the
V
IN
– V
OUT
differential voltage.
Note 10: SHDN1/SHDN2 pin current flows into the pin.
Note 11: The LT3029 minimum input voltage specification limits dropout
voltage under some output voltage/load conditions. See the curve of
Minimum Input Voltage in the Typical Performance Characteristics.
Note 12: The LT3029 includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature exceeds the maximum operating junction temperature when
overtemperature protection is active. Continuous operation above the
specified maximum operating junction temperature may impair device
reliability.
OUTPUT CURRENT (mA)
500
450
400
350
300
250
200
150
100
50
0
DROPOUT VOLTAGE (mV)
3029 G01
0 50 100 150
200
250
300 350 400 450 500
T
J
= 150°C
T
J
= 25°C
T
J
= 125°C
T
J
= –55°C
OUTPUT CURRENT (mA)
500
450
400
350
300
250
200
150
100
50
0
GUARANTEED DROPOUT VOLTAGE (mV)
3029 G02
0 50 100 150
200
250
300 350 400 450 500
T
J
= 150°C
T
J
= 25°C
= TEST POINTS
TEMPERATURE (°C)
500
450
400
350
300
250
200
150
100
50
0
DROPOUT VOLTAGE (mV)
3029 G03
–75 –50 –25 0
25
50
75 100 125 150 175
I
L
= 500mA
I
L
= 100mA
I
L
= 250mA
I
L
= 50mA
I
L
= 10mA
I
L
= 1mA
TEMPERATURE (°C)
QUIESCENT CURRENT (µA)
3029 G04
–75 –50 –25 0
25
50
75 100 125 150 175
V
IN
= 6V
R
L
= 243k, I
L
= 5µA
150
125
100
75
50
25
0
V
SHDN
= V
IN
T
J
= 25°C, unless otherwise noted.