Diodes AP3512E Manuel d'utilisateur télécharger pdf (Page 7)

Preliminary Datasheet

18V, 2A Synchronous DC-DC Buck Converter AP3512E

Dec. 2012 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

Typical Performance Characteristics

=12V, V

OUT

=3.3V, L=4.7µH, T

=25°C, unless otherwise noted.

Figure 4. Efficiency vs. Load Current Figure 5. Quiescent Current vs. Temperature

Figure 6. Feedback Voltage vs. Temperature

Figure 7. Output Ripple (I

OUT

=2A)

0.01 0.1 1

100

=12V

OUT

=3.3V, L=4.7μH

OUT

=5.0V, L=6.8μH

Efficiency (%)

Load Current (A)

(10V/div)

OUT-AC

(20mV/div)

(1A/div)

-50-250 255075100125150

0.80

0.85

0.90

0.95

1.00

1.05

1.10

1.15

1.20

1.25

1.30

Quiescent Current (mA)

Temperature (

-50 -25 0 25 50 75 100 125 150

0.6

0.7

0.8

0.9

1.0

1.1

1.2

Feedback Voltage (V)

Temperature (

Time(1µs/div)

1 2 3 4 5 6 7 8 9 10 11 12 13

Pin Configuration 2
Pin Description 2
Parameter Symbol Value Unit 4
Electrical Characteristics 5
Feedback Voltage (V) 7
Temperature ( 7
=3.3V, L=4.7µH, T 8
3.202(0.126) 12
3.402(0.134) 12

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Diodes AP3512E Manuel d'utilisateur Page 7

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