LT1963 datasheet(8/26 Pages) LINER

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LT3088

3088fb

For more information www.linear.com/LT3088

BLOCK DIAGRAM

PIN FUNCTIONS

IN: Input. This pin supplies power to regulate internal

circuitry and supply output load current. For the device

to operate properly and regulate, the voltage on this pin

must be between the dropout voltage and 36V above the

OUT pin (depending on output load current, see Dropout

Voltage Specifications).

OUT: Output. This is the power output of the device. The

LT3088 requires a 2mA minimum load current for proper

output regulation.

SET: Set. This pin is the error amplifier’s noninverting

input and also sets the operating bias point of the circuit.

A fixed 50µA current source flows out of this pin. A single

external resistor programs VOUT. Output voltage range

is 0V to 34.5V.

Exposed Pad/Tab: Output. The exposed pad of the DD

package and the tab of the M and ST packages are tied

internally to OUT. As such, tie them directly to OUT at the

PCB. The amount of copper area and planes connected

to OUT determine the effective thermal resistance of the

packages.

NC: (DD Package Only) No Connection. No connect pins

have no connection to internal circuitry and may be tied

to IN, OUT, GND or floated.

–

50µA

SET

OUT 3088 BD

LT1963 Datasheet(PDF) 8 Page - Linear Technology