ACE714B

Step-up DC/DC Converter Backlight Driver

VER 1.2

3

Electrical Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

FB Control Voltage

94

104

114

mV

Operating Voltage Range

2.5

5.5

V

Stand-by Current

1

µA

Oscillation Frequency

1

1.2

1.5

MHz

Maximum Duty Cycle

85

92

%

EFFI

Efficiency

88

%

LX Current Limit

1.3

A

Overvoltage Protection

20

28

V

LX On Resistance

300

mΩ

LX Leak Current

0

1

µA

CE

“H” Voltage

1.5

V

CE

“L” Voltage

0.4

V

PWM dimming frequency

200

200K

Hz

Note: 1.

Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device. These are for

stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the

operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended

periods may remain possibility to affect device reliability.

2.

JEDEC51-3 thermal measurement standard. Pin 2 of SOT23-

6 packages is the case position for θJC measurement.

3. The device is not guaranteed to function outside its operating conditions.

4. EN pin voltage must be higher than 1.5V.

Typical Application Circuit