Datasheet LT1580, LT1580-2.5 (Analog Devices) - 5

LT1580/LT1580-2.5
W U TYPICAL PERFORMANCE CHARACTERISTICS LT1580 Reference Voltage LT1580-2.5 Output Voltage vs Temperature vs Temperature Load Current Step Response
1.258 2.508 1.256 2.506 VOUT 50mV/DIV 1.254 2.504 1.252 2.502 7A 1.250 2.500 1.248 2.498 LOAD OUTPUT VOLTAGE (V) REFERENCE VOLTAGE (V) 1.246 2.496 400mA 50µs/DIV 1580 TA02 1.244 2.494 1.242 2.492 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE ( TEMPERATURE ( °C) °C) 1580 G05 1580 G04
U U U PIN FUNCTIONS (5-Lead/7-Lead) SENSE (Pin 1):
This pin is the positive side of the reference
VPOWER (Pin 5/6):
This is the collector to the power device voltage for the device. With this pin it is possible to Kelvin of the LT1580. The output load current is supplied through sense the output voltage at the load. this pin. For the device to regulate, the voltage at this pin must be between 0.1V and 0.8V greater than the output
ADJ (Pin 2/5):
This pin is the negative side of the voltage (see Dropout specifications). reference voltage for the device. Transient response can be improved by adding a small bypass capacitor from the
VCONTROL (Pin 4/3):
This pin is the supply pin for the ADJ pin to ground. For fixed voltage devices the ADJ pin control circuitry of the device. The current flow into this is also brought out to allow the user to add a bypass pin will be about 1% of the output current. For the device capacitor. to regulate, the voltage at this pin must be between 1.0V and 1.3V greater than the output voltage (see Dropout
GND (Pin 2, 7-Lead Only):
For fixed voltage devices this specifications). is the bottom of the resistor divider that sets the output voltage.
VOUT (Pin 3/4):
This is the power output of the device. 5