Diodes AP3031 Manuel d'utilisateur télécharger pdf (Page 5)

Data Sheet

Dec. 2012 Rev. 1. 6 BCD Semiconductor Manufacturing Limited

WHITE LED STEP-UP CONVERTER AP3031

Parameter Symbol Conditions Min Typ Max Unit

Operating Voltage V

2.7 16

Feedback Voltage (Note 2)

OUT

=20mA, 3 LEDs,

=-40

C to 85

188 200 212 mV

FB Pin Bias Current I

35 100 nA

Quiescent Current I

, no switching 3.0 4.0 5.0 mA

Shutdown Quiescent Current I

SHDN

CTRL

=0V 20 50 80 μA

Switching Frequency f 0.75 1 1.3 MHz

Maximum Duty Cycle D

MAX

90 93 %

Switch Current Limit (Note 3) I

LIMIT

D=60% 1.2 1.4 A

Switch V

Saturation Voltage V

CESAT

=0.6A 300 mV

Switch Leakage Current V

=16V 0.01 5 μA

CTRL Pin Voltage

CTRL

Active high 1.8

Active low 0.5

CTRL Pin Bias Current I

CTRL

35 60 85 μA

OVP Voltage V

OVP

15.5 17.5 19.5 V

Soft-start Time t

250 μs

Standby Time t

STB

0.7 ms

Thermal Shutdown T

OTSD

155

Thermal Resistance

(Junction to Case)

C/W

=5.0V, V

CTRL

=5.0V, T

=25

C, unless otherwise specified.)

Electrical Characteristics

Note 2: The bold type specifications of full temperature range are guaranteed by design (GBD).

Note 3: The switch current limit is related to duty cycle. Please refer to Figure 15 for detail.

1 2 3 4 5 6 7 8 9 10 ... 16 17

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Diodes AP3031 Manuel d'utilisateur Page 5

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