Rev. 1.11

4

August 12, 2016

HT7463A/HT7463B

Electrical Characteristics

Symbol

Parameter

Test Condition

Min

Typ

Max

Unit

Supply Voltage

Input Voltage

VIN

4.5

—

52

V

Quiescent Current

—

0.7

1

mA

Shutdown Current

—

0.1

1

μA

Buck Converter

Output Voltage*

—

1.0

—

V

Switching Frequency

1000

1250

1500

kHz

440

550

660

kHz

Fold-back Frequency

90

105

—

kHz

90

105

—

kHz

Maximum Duty Cycle

HT7463A

—

90

—

%

HT7463B

—

95

—

%

Minimum ON-Time

—

—

100

—

ns

Switch-ON Resistance

—

0.9

—

Ω

SW Leakage Current

—

0.1

1

μA

Feedback Voltage

0.778 0.794

0.81

V

Feedback Leakage Current

—

—

0.1

μA

EN Input Current

—

0.1

—

μA

—

16

—

μA

EN High Voltage Threshold

—

—

2.3

V

EN Low Voltage Threshold

0.9

—

—

V

Protections

Input Supply Turn ON Level

UVLO+

—

—

4.2

V

Input Supply Turn OFF Level

UVLO−

3.4

—

—

V

Over Current Protection Threshold

—

—

1

—

A

Thermal Shutdown Threshold

OTP

—

150

—

°C

Thermal Recovery Temperature

—

—

125

—

°C

Note:1.MINOutputVoltageisrestrictedbyMinimumON-Time,100ns.

2.MAXOutputVoltageisrestrictedbyMaximumDutyCycleandSwitch-ONResistance.