AL8853

Document number: DS42211 Rev. 1 - 2

4 of 15

www.diodes.com

September 2019

© Diodes Incorporated

AL8853

Note:

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

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Supply Voltage

Input Voltage

—

6.0

—

40

V

Operating Supply Current

No Load

—

2

3

mA

Shutdown Supply Current

PWM Low > 50ms, Sleep

Mode

—

130

180

µA

Under Voltage Lockout

Input UVLO Threshold

4.9

5.3

5.7

V

Input UVLO Hysteresis

—

—

400

—

mV

Soft Start

Soft Start Slope

—

—

22

—

mV/ms

Error Amplifier

Feedback Reference Voltage

Reference Voltage at Non-

Inverting Input

194

200

206

mV

Open Loop Voltage Gain

—

—

70

—

dB

Transconductance of EA

—

—

100

—

µA/V

Output Source Current

—

—

30

—

µA

Output Sink Current

—

—

60

—

µA

PWM to Analog Dimming Control

—

PWM Duty

—

0

—

100

%

PWM Logic Input for Analog Dimming

—

2.5

—

—

V

—

—

—

1.2

V

Protection Threshold

Output Over Voltage Threshold Voltage

—

1.9

2.0

2.1

V

Output Over Voltage Hysteresis Voltage

—

—

100

—

mV

OVP UVLO Threshold Voltage

Normal Operation

—

200

—

mV

System Startup

—

100

—

mV

Over Current Threshold Voltage

Duty = 90%

255

300

345

mV

CS High Protection Threshold

Diode or Inductor Short

1.1

1.2

1.3

V

COMP High Protection Threshold

FB Pin Short to GND

2.9

3.2

3.5

V

Over Temperature Threshold

—

—

+160

—

°C

Over Temperature Hysteresis

—

—

+30

—

°C

Gate Driver

Oscillator Frequency

—

110

120

130

kHz

Maximum Duty Cycle

—

93

95

97

%

Gate Pin Output Voltage

—

13

—

V

Rising Time

1nF load

—

40

—

ns

Falling Time

—

20

—

ns