Diodes AUR9719 Manuel d'utilisateur télécharger pdf (Page 5)

Data Sheet

1.5MHz, 2A, STEP DOWN DC-DC CONVERTER AUR9719

Nov. 2011 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

Electrical Characteristics

IN_SW

IN_A

=5V, V

OUT

=1.2V, V

=0.8V, L=3.3µH, C

=4.7µF, C

OUT

=22µF, T

=25°C, unless otherwise

specified.

Parameter Symbol Test Condition Min Typ Max Unit

Input Voltage Range V

IN_SW

IN_A

2.7 5.5 V

Shutdown Current I

OFF

=0V 4 µA

Active Current I

=0.95V 460 µA

Regulated Feedback

Voltage

For Adjustable Output Voltage 0.784 0.8 0.816 V

Regulated Output

Voltage Accuracy

∆V

OUT

=2.7V to 5.5V, I

OUT

=10mA to

-3 3 %

Peak Inductor

Current

2.2 3.2 A

Oscillator Frequency f

OSC

1.2 1.5 1.8 MHz

PMOSFET R

ON(P)

=0.75A 100 mΩ

NMOSFET R

ON(N)

=0.75A 100 mΩ

EN Input High

Threshold Voltage

EN_H

1.5 V

EN Input Low

Threshold Voltage

EN_L

0.4 V

EN Input Current I

2 µA

Soft-start Time t

450 µs

Maximum Duty

Cycle

MAX

90 %

Rising 2.4

Falling 2.3

Under Voltage Lock

Out Threshold

UVLO

Hysteresis 0.1

Thermal Shutdown T

Hysteresis=30°C 150 °C

1 2 3 4 5 6 7 8 9 10 ... 18 19

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Diodes AUR9719 Manuel d'utilisateur Page 5

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