AL1666

Document number: DS42417 Rev. 1 - 2

4 of 16

www.diodes.com

December 2019

© Diodes Incorporated

AL1666

Symbol

Parameter

Min

Max

Unit

Ambient Temperature (Note 5)

-40

+105

°C

Operating VCC Voltage (Note 6)

8.5

V

Notes:

5. The device may operate normally at +125°C ambient temperature under the condition not triggers temperature protection.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

UVLO Section

Startup Threshold Voltage

—

15.8

18.5

19.5

V

Minimal Operating Voltage

After Turn On

5.8

7.8

9

V

—

21.8

25

29.5

V

Standby Current Section

Startup Current

—

120

300

µA

Operating Current @4kHz

—

2

4

mA

Shunt Current in OVP Mode

3.1

—

—

mA

Drive Output Section

Output Voltage Rise Time (Note 7)

—

100

—

ns

Output Voltage Fall Time (Note 7)

—

100

—

ns

Output Clamp Voltage

9.8

12

15.5

V

Minimum On Time (Note 7)

—

—

1000

2010

ns

Maximum On Time

—

—

15

—

µs

Maximum Off Time

—

—

290

405

µs

Maximum Frequency

—

—

150

—

kHz

Internal CS Reference

Internal Reference Voltage

—

0.394

0.4

0.406

V

Primary Current Clamp Voltage

—

—

2

—

V

Primary Over Current Voltage

—

—

3

—

V

Error Amplifier

Gm

Trans-Conductance

—

—

27

—

µA/V

Amplifier Source Current

—

—

7.2

—

µA

Feedback Input Section

FB CV Threshold

—

2.86

3.0

3.26

V

PWMD Section

PWM Signal Low Threshold Voltage

—

—

—

0.4

V

PWM Signal High Threshold Voltage

—

2.0

—

—

V

PWM Frequency for PWM to DC

Dimming

—

0.5

—

20

kHz

Note:

7. These parameters, although guaranteed by design, are not 100% tested in production.