AL9901

Document number: DS37713 Rev. 1 - 2

4 of 20

www.diodes.com

March 2015

© Diodes Incorporated

AL9901

Specifications apply to AL9901 unless otherwise specified

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Shut-Down Mode Supply Current

Pin PWM_D to GND,

-

0.5

1

mA

Internally Regulated Voltage

Gate pin open

7.2

7.5

8.1

V

-

-

1.0

mA

UVLO

6.4

6.7

7.2

V

UVLO

-

500

-

mV

PWM_D Pull-Down Resistance

150

200

250

k

MOSFET Threshold Voltage

-

3

-

V

MOSFET Diodes Forward Voltage

-

0.85

-

V

Drain-Source On-Resistance

-

-

4.4

-

Current Sense Threshold Voltage

237.5

250

262.5

mV

Oscillator Frequency

20

25

30

kHz

80

100

120

Maximum Oscillator PWM Duty Cycle

-

-

100

%

Linear Dimming Pin Voltage Range

0

-

250

mV

Current Sense Blanking Interval

160

250

440

ns

Delay From CS Trip to GATE lo

-

-

300

ns

Thermal Shut-Down

-

-

+150

-

°C

Thermal Shut-Down Hysteresis

-

-

+50

-

Thermal Resistance Junction-to-Ambient

U-DFN6040-12 (Note 8)

-

65

-

°C/W

Thermal Resistance Junction-to-Case

-

5

-

°C/W

Thermal Resistance Junction-to-Ambient

SOIC-16

-

100

-

°C/W

Thermal Resistance Junction-to-Case

-

15

-

°C/W

Notes:

7. Also limited by package power dissipation capability, whichever is lower.

8. Device mounted on FR-4 PCB (25mm x 25mm 1oz copper, minimum recommended pad layout on top. For better thermal performance, larger

copper pad for heat-sink is needed.