AP5100

1.2A Step-Down Converter with 1.4MHz Switching

Frequency

AP5100

5 of 12

MARCH 2010

Document number: DS32130 Rev. 1 - 2

www.diodes.com

Recommended Operating Ratings

(Note 5)

Symbol

Description

Rating

Unit

Supply Voltage

4.75 to 24

°C

Operating Ambient Temperature Range

-25 to +85

°C

Output Voltage

0.81 to 15

V

Notes:

5. The device function is not guaranteed outside of the recommended operating conditions.

Notes:

6. Guaranteed by design.

Symbol

Parameter

Test Conditions

Min

Typ.

Max

Unit

Feedback Voltage

4.75V

≤ V

0.790

0.810

0.830

V

Feedback Current

0.1

µA

Switch-On Resistance (Note 6)

0.35

Ω

Switch Leakage

10

µA

Current Limit (Note 6)

2.4

A

Oscillator Frequency

1.1

1.4

1.7

MHz

Fold-back Frequency

480

kHz

Maximum Duty Cycle

87

%

Minimum On-Time (Note 6)

100

ns

Under Voltage Lockout Threshold

Rising

3.8

4.0

4.2

V

Under Voltage Lockout Threshold

Hysteresis

150

mV

EN Input Low Voltage

0.4

V

EN Input High Voltage

1.2

V

EN Input Current

0.3

µA

0.1

Supply Current (Shutdown)

0.1

1.0

µA

Supply Current (Quiescent)

0.4

1.0

mA

Thermal Shutdown (Note 6)

140

°C