LT1581CT7-2.5 Linear Technology, LT1581CT7-2.5 Datasheet - Page 4

• Manufacturer Part Number: LT1581CT7-2.5
• Description: IC LDO REGULATOR 10A 2.5V TO2207
• Manufacturer: Linear Technology

Specifications of LT1581CT7-2.5

• Applications: Converter, Intel Pentium®
• Voltage - Input: 1.68 ~ 6 V
• Number Of Outputs: 1
• Voltage - Output: 2.5V
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: TO-220-7 (Bent and Staggered Leads)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

PIN
LT1581/LT1581-2.5
TYPICAL PERFORMANCE CHARACTERISTICS
ADJUST (Pin 1): This pin is the negative side of the
reference voltage for the device. Transient response can
be improved by adding a small bypass capacitor from the
ADJUST pin to ground. For fixed voltage devices the
ADJUST pin is also brought out to allow the user to add a
bypass capacitor.
GND (Pin 2, Fixed Voltage Devices Only): For fixed
voltage devices this is the bottom of the resistor divider
that sets the output voltage.
SENSE (Pin 3): This pin is the positive side of the reference
voltage for the device. With this pin it is possible to Kelvin
sense the output voltage at the load.
4
1.262
1.259
1.256
1.253
1.250
1.247
1.244
1.241
1.238
200
180
160
140
120
100
U
80
60
40
20
0
–50 –25
0
Control Pin Current vs
Output Current
LT1581 Reference Voltage vs
Temperature
FUNCTIONS
1
INDICATES GUARANTEED TEST POINTS
U
2
0
OUTPUT CURRENT (A)
DATA SHEET LIMIT
3
TEMPERATURE ( C)
25
4
50
5
U
6
75
TYPICAL
DEVICE
7
100
W
8
125
1581 G01
1581 G04
9 10
U
150
2.512
2.509
2.506
2.503
2.500
2.497
2.494
2.491
2.488
2
0
1
–50 –25
0
LT1581-2.5 Output Voltage vs
Temperature
Dropout Voltage —
Minimum Control Voltage
INDICATES GUARANTEED TEST POINTS
1
T
J
= 125 C
2
DATA SHEET LIMIT
0
OUTPUT CURRENT (A)
3
TEMPERATURE ( C)
25
4
OUTPUT (Pin 4): This is the power output of the device.
V
of the LT1581. The output load current is supplied through
this pin. For the device to regulate, the voltage at this pin
must be between 0.1V and 0.7V greater than the output
voltage (see Dropout specifications).
V
circuitry of the device. The current flow into this pin will
be about 1% of the output current. For the device to
regulate, the voltage at this pin must be between 1.0V and
1.35V greater than the output voltage (see Dropout
specifications).
50
5
T
POWER
CONTROL
J
= 25 C
6
75
7
100
(Pin 5): This is the collector to the power device
8
(Pin 6): This pin is the supply pin for the control
125
1581 G02
1581 G05
9
150
10
LOAD
50mV/DIV
400mA
V
10A
OUT
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
Dropout Voltage —
Minimum Power Voltage
Load Current Step Response
1
INDICATES GUARANTEED TEST POINTS
DATA SHEET LIMIT
2
OUTPUT CURRENT (A)
3
4
50 s/DIV
5
T
J
= 25 C
6
7
T
J
8
= 125 C
9
1581 G03
1581 G06
10