Rev. 1.00

3

February 22, 2012

HT77xxS

Electrical Characteristics

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Input Voltage

—

—

—

6.0

V

Output Voltage Tolerance

-2.5

—

+2.5

%

Starting Voltage

—

0.7

0.9

V

Voltage Hold

—

0.7

—

V

Supply Current

Pin

—

4

7

μA

Shutdown Current

CE= GND

—

0.1

1.0

μA

CE High Threshold

—

1.5

—

—

V

CE Low Threshold

—

—

0.4

V

LX Leakage Current

Measurement at the LX pin

—

0.05

1

μA

Oscillator Frequency

Measurement at the LX pin

—

500

—

kHz

Oscillator Duty Cycle

70

80

—

%

η

Efficiency

—

80

—

%

—

85

—

%

Note:Absolutemaximumratingsindicatelimitsbeyondwhichdamagetothedevicemayoccur.Operating

Ratingsindicateconditionsforwhichthedeviceisintendedtobefunctional,butdonotguaranteespecific

performancelimits.Theguaranteedspecificationsapplyonlyforthetestconditionslisted.

MaximumInputSupplyVoltage.......................... 6.5V

AmbientTemperatureRange............... -40°Cto85°C

StorageTemperature.......................... -50°Cto125°C

Note:Thesearestressratingsonly.Stressesexceedingtherangespecifiedunder"AbsoluteMaximumRatings"

maycausesubstantialdamagetothedevice.Functionaloperationofthisdeviceatotherconditionsbeyond

thoselistedinthespecificationisnotimpliedandprolongedexposuretoextremeconditionsmayaffect

devicereliability.

Absolute Maximum Ratings