AL1672

Document number: DS39344 Rev. 1 - 2

5 of 14

www.diodes.com

July 2017

© Diodes Incorporated

AL1672

Symbol

Parameter

Condition

Min

Typ

Max

Unit

UVLO Section

Startup Threshold Voltage

–

17

18.5

20

V

Minimal Operating

Voltage

After Turn On

7

7.8

8.5

V

–

25

27

29.9

V

Standby Current Section

Startup Current

Before Start Up

–

0.8

–

μA

Operating Current

FB CS connect to GND,

–

1

–

mA

Shunt Current in OVP Mode

3

5

7

mA

Switch Time Parameter

Maximum On Time

–

–

25

–

μs

Maximum Off Time

–

–

35

–

μs

Minimum Off Time

–

1

2

6

μs

Maximum Frequency

–

120

150

230

kHz

Internal CS Reference

Internal Reference Voltage

–

0.291

0.3

0.309

V

Primary Current Clamp Voltage

–

1.1

1.2

1.3

V

Error Amplifier

Gm

Gm Trans-Conductance

–

10

16.7

22

μA/V

Amplifier Source Current

–

7

10

15

μA

Feedback Input Section

FB CV Threshold

–

1.4

1.5

1.6

V

APWM Section

PWM Dimming Low Threshold

Voltage

–

–

0.3

–

V

PWM Dimming High Threshold

Voltage

–

–

2.4

–

V

Linear Dimming Range on APWM

–

–

0.3

–

2.4

V

Internal High Voltage MOSFET

Drain-Source on State

Resistance

–

–

2

2.5

Ω

Drain-Source Break-

Down Voltage

–

600

–

–

V

Drain-Source Leakage

Current

–

–

1

μA

Thermal Fold-Back Section

Thermal Fold-Back Temperature

(Note 7)

–

–

+145

–

°C

Over Temperature Protection Section

Shutdown Temperature

(Note 7&8)

–

–

–

+165

–

°C

Notes:

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

8. The device will latch when OTP happens an

d the device won’t operate constantly at this temperature.