Diodes AP3608E Manuel d'utilisateur télécharger pdf (Page 6)

EIGHT-CHANNEL CONSTANT CURRENT SINK WITH CURRENT MATCH AP3608E

Data Sheet

Mar. 2011 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

Parameter Symbol Min Max Unit

Input Voltage

4.2 5.5 V

Recommended PWM Dimming Frequency f

PWM

0.1 25 kHz

Full Scale Setting Current per Channel

CHX

≥0.5V

CHX

10 25

CHX

≥1V 10 65

CHX

≥1.5V 10 110

Operating Temperature Range

-40 85

Recommended Operating Conditions

Electrical Characteristics

Parameter Symbol Conditions Min Typ Max Unit

Input Section

Input Voltage V

4.2 5.5 V

Quiescent Current I

No load 0.5 1 mA

Shutdown Quiescent Current I

SDB

=0V 0.1 1 µA

Under Voltage Lockout Threshold V

UVLO

Falling Edge 3.6 3.8 4.0 V

Under Voltage Lockout Hysteresis V

HUVLO

200 mV

Current Sink Section

ISET Reference Voltage V

ISET

1.170 1.194 1.218 V

Current Multiplication Ratio K I

CHX

SET

370 400 430

Maximum Output Current per Channel

CHX_MAX

CHX

=0.5V 23 45

CHX

=1V 65 70

CHX

=1.5V 110 120

Current Matching between Any Two Channels

CH-MATCH

CHX

=60mA

CHX

=1V

-1.5 1.5 %

Current Sink Saturation Voltage per Channel

CHX_SAT

CHX

=20mA 0.45

CHX

=60mA 0.8

CHX

=100mA 1.2

Output Current Line Regulation V

=4.2V to 5.5V 2 %/V

Output Current Load Regulation V

CHX

=0.5V to 2.8V 4 %

Limits in standard typeface are guaranteed for V

=5V, R

ISET

=8kΩ,, T

=25

C, unless otherwise specified.

1 2 3 4 5 6 7 8 9 10 11 ... 14 15

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Diodes AP3608E Manuel d'utilisateur Page 6

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