Rev. 1.50

3

June 25, 2016

HT77xxS

Thermal Information

Symbol

Parameter

Package

Max.

Unit

Thermal Resistance (Junction to Ambient)

(Assume no ambient airflow, no heat sink)

SOT89

300

°C/W

TO92

300

°C/W

SOT23

330

°C/W

SOT23-5

320

°C/W

Power Dissipation

SOT89

0.33

W

TO92

0.33

W

SOT23

0.30

W

SOT23-5

0.31

W

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

—

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

Add 5.5V at VOUT pin, 4V at LX pin.

Measured at LX pin.

—

0.05

1

μA

Oscillator Frequency

—

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