Absolute Maximum Ratings

Input Supply Voltage..................................................6V

Other Pins Voltage ....................................................6V

Operating Temperature Range ...............

-40°Cto85°C

Maximum Junction Temperature..........................125

°C

Note: These are stress ratings only. Stresses exceeding the range specified under

²Absolute Maximum Ratings² may

cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed

in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.

Electrical Characteristics

mF, Ta=25°C, unless otherwise specified.

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Input Supply Voltage

HT7936A

2.8

¾

5.0

V

HT7936B

2.8

¾

4.5

V

Output Voltage

£110mA

4.80

¾

5.20

V

£140mA

4.32

¾

4.68

V

Shutdown Current

¾

0.1

1.0

mA

Operation Current

¾¾

2.0

4.0

mA

Output Current

HT7936A

110

¾¾

mA

HT7936B

150

¾¾

mA

Short Circuit Current

¾¾

60

90

mA

Current Limit

¾¾

370

500

mA

Switching Frequency

¾

0.8

1.0

1.3

MHz

EN Pin Voltage High

2.8V

1.5

¾¾

V

EN Pin Voltage Low

2.8V

¾¾

0.4

V

Output Ripple Voltage

mF

¾

30

¾

mV

h

Efficiency

¾

80

¾

%

¾

80

¾

%

Note:

Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating Ratings

indicate conditions for which the device is intended to be functional, but do not guarantee specific performance

limits. The guaranteed specifications apply only for the test conditions listed.

Specifications are production tested at Ta=25

°C. Specifications over -40°Cto+85°C operating temperature

range are assured by design.

HT7936A/HT7936B

Rev 1.00

3

December 28, 2009