Rev. 1.00

3

September 02, 2011

HT7465

Absolute Maximum Ratings

MaximumInputSupplyVoltage............................26V

SwitchNodeVoltage..............................................26V

FeedbackVoltage.....................................................6V

ENVoltage...............................................................6V

CompVoltage...........................................................6V

SSVoltage................................................................6V

MaximumJunctionTemperature....................... 150°C

Pin Description

Pin Name

Description

NC

Not used

BS

Internal power NMOS gate drive boost input.

A 10nF or greater value capacitor should be connected from SW to BS for additional Power NMOS

gate driving purposes.

VIN

Power supply input.

The input supply pin for the device, VIN, is connected to a supply voltage between 4.75V to 24V.

SW

Power switching output.

The internal power MOS drain is connected to the inductor, diode and VIN.

GND

Ground.

Device ground voltage reference.

FB

Feedback pin.

The feedback pin is connected to an external resistor divider to measure the output voltage.

COMP

Error amplifier output.

Used for compensation of the regulation control loop. Connect a series RC network from COMP to

GND to compensate the regulation control loop. The COMP pin value is 0.92V.

EN

Enable input.

This pin is set high to turn on the regulator and low to turn it off. The pin should be left unconnected

if not used.

SS

Soft-start input.

If the soft start function is to be used then an external capacitor should be connected between this

pin and ground. If the soft start function is not required the pin should be left open.

Note:Thesearestressratingsonly.Stressesexceedingtherangespecifiedunder“AbsoluteMaximumRatings”

maycausesubstantialdamagetothedevice.Functionaloperationofthisdeviceatotherconditionsbeyond

thoselistedinthespecificationisnotimpliedandprolongedexposuretoextremeconditionsmayaffect

devicereliability.

Recommended Operating Conditions

InputSupplyVoltage................................4.75V~24V

AmbientTemperatureRange............... -40°C~+85°C