LT1581CT7-2.5 Ver la hoja de datos (PDF) - Linear Technology
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LT1581CT7-2.5 Datasheet PDF : 12 Pages
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LT1581/LT1581-2.5
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VPOWER Input Voltage ................................................ 6V
VCONTROL Input Voltage ........................................... 13V
Operating Junction Temperature Range
Control Section ...................................... 0°C to 125°C
Power Transistor ................................... 0°C to 150°C
Storage Temperature ............................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PRECONDITIONING
100% Thermal Limit Functional Test
PACKAGE/ORDER INFORMATION
FRONT VIEW
7
NC
6
VCONTROL
5
VPOWER
4
OUTPUT
3
SENSE
2
NC/GND*
1
ADJUST
TAB IS
OUTPUT
T7 PACKAGE
7-LEAD PLASTIC TO-220
θJA = 50°C/ W
*PIN2 = NC FOR LT1581CT7, GND FOR LT1581CT7-2.5
ORDER PART
NUMBER
LT1581CT7
LT1581CT7-2.5
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 2)
PARAMETER
CONDITIONS
Output Voltage: LT1581-2.5
Reference Voltage: LT1581
(VADJ = 0V)
Line Regulation: LT1581-2.5
LT1581
Load Regulation: LT1581-2.5
LT1581 (VADJ = 0V)
Minimum Load Current: LT1581
Control Pin Current: LT1581-2.5
(Note 5)
Control Pin Current: LT1581
(Note 5)
Ground Pin Current: LT1581-2.5
VCONTROL = 5V, VPOWER = 3.3V, ILOAD = 0mA
VCONTROL = 4V to 12V, VPOWER = 3V to 5.5V, ILOAD = 0mA to 4A
q
VCONTROL = 4V to 12V, VPOWER = 3.3V to 5.5V, ILOAD = 0mA to 10A q
VCONTROL = 2.75V, VPOWER = 2V, ILOAD = 10mA
VCONTROL = 2.7V to 12V, VPOWER = 1.75V to 5.5V, ILOAD = 0mA to 4A q
VCONTROL = 2.7V to 12V, VPOWER = 2.05V to 5.5V, ILOAD = 0mA to 10A q
VCONTROL = 3.65V to 12V, VPOWER = 3V to 5.5V, ILOAD = 10mA
q
VCONTROL = 2.5V to 12V, VPOWER = 1.75V to 5.5V, ILOAD = 10mA
q
VCONTROL = 5V, VPOWER = 3.3V, ILOAD = 0mA to 10A
q
VCONTROL = 2.75V, VPOWER = 2.1V, ILOAD = 10mA to 10A
q
VCONTROL = 5V, VPOWER = 3.3V, VADJ = 0V (Note 4)
q
VCONTROL = 5V, VPOWER = 3.3V, ILOAD = 100mA
q
VCONTROL = 5V, VPOWER = 3.3V, ILOAD = 4A
q
VCONTROL = 5V, VPOWER = 3.3V, ILOAD = 7A
q
VCONTROL = 5V, VPOWER = 3.3V, ILOAD = 10A
q
VCONTROL = 2.75V, VPOWER = 2.05V, ILOAD = 100mA
q
VCONTROL = 2.75V, VPOWER = 2.05V, ILOAD = 4A
q
VCONTROL = 2.75V, VPOWER = 2.05V, ILOAD = 7A
q
VCONTROL = 2.75V, VPOWER = 2.05V, ILOAD = 10A
q
VCONTROL = 5V, VPOWER = 3.3V, ILOAD = 0mA
q
Adjust Pin Current: LT1581 (VADJ = 0V) VCONTROL = 2.75V, VPOWER = 2.05V, ILOAD = 10mA
q
Current Limit: LT1581-2.5
VCONTROL = 5V, VPOWER = 3.3V, ∆VOUT = 100mV
q
LT1581 (VADJ = 0V) VCONTROL = 2.75V, VPOWER = 2.05V, ∆VOUT = 100mV
q
Ripple Rejection: LT1581-2.5
VCONTROL = VPOWER = 5V Avg, VRIPPLE = 1VP-P, fRIPPLE = 120Hz,
IOUT = 4A, TJ = 25°C
LT1581
VCONTROL = VPOWER = 3.75V Avg, VRIPPLE = 1VP-P, fRIPPLE = 120Hz,
VADJ = 0V, IOUT = 4A, TJ = 25°C
Thermal Regulation
30ms Pulse
Thermal Resistance, Junction-to-Case Control Circuitry/Power Transistor
MIN
2.485
2.475
2.475
1.243
1.237
1.237
10.1
10.1
55
TYP
2.500
2.500
2.500
1.250
1.250
1.250
1
1
1
1
3
5
20
40
70
5
20
40
70
6
60
11
11
80
MAX
2.515
2.525
2.525
1.257
1.263
1.263
3
3
10
5
10
10
50
100
170
10
50
100
170
10
120
UNITS
V
V
V
V
V
V
mV
mV
mV
mV
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
µA
A
A
dB
60
80
dB
0.004 0.020
0.65/2.50
%/W
°C/W
2
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