Rev. 1.00

4

August 25, 2011

HT78Bxx

Electrical Characteristics

Symbol

Parameter

Test Conditions

Min. Typ. Max.

Unit

Input Voltage

2.5

—

7

V

Output Voltage Tolerance

-2

—

+2

%

Line Regulation

—

0.02 0.1

%/V

Load Regulation(Note 3)

—

28

55

mV

—

33

66

—

35

80

Dropout Voltage(Note 4)

—

1

1.3

V

—

0.64 0.94

Short Current Limit

—

90

—

mA

Supply Current

—

18

30

μA

Shutdown Current

CE=GND

—

0.1

1

μA

CE Input High Threshold

1

—

7

V

CE Input Low Threshold

0

—

0.3

V

RR

Ripple Rejection

f=1kHz

—

70

—

dB

f=10kHz

—

53

—

Output Noise

Bandwidth=10Hz to 100KHz

—

30

—

μVrms

Temperature Coefficient

OUT

a

OUT

V

TV

∆

ƥ

— ±100 — ppm/°C

Thermal Shutdown Temperature

—

—

150

—

°C

Note:1.Absolutemaximumratingsindicatelimitsbeyondwhichdamagetothedevicemayoccur.Operating

Ratingsindicateconditionsforwhichthedeviceisintendedtobefunctional,butdonotguarantee

specificperformancelimits.Theguaranteedspecificationsapplyonlyforthetestconditionslisted.

operatingtemperaturerangeareassuredbydesign,characterizationandcorrelationwithStatistical

QualityControls(SQC).

3.Loadregulationismeasuredatconstantjunctiontemperature,usingpulsetestingwithashortONtime.

Guaranteeduptothemaximumpowerdissipation.Powerdissipationisdeterminedbytheinput/output

differentialvoltageandtheoutputcurrent.Guaranteedmaximumpowerdissipationwillnotbeavailable

overthefullinput/outputrange.Themaximumallowablepowerdissipationatanyambienttemperature

4.Dropoutvoltageistheminimuminputtooutputvoltagedifferentialneededtomaintainregulationata