al8805 Diodes, Inc., al8805 Datasheet - Page 2

• Manufacturer Part Number: al8805
• Description: High Efficiency 30v 1a Buck Led Driver
• Manufacturer: Diodes, Inc.

Absolute Maximum Ratings
Caution: The absolute maximum ratings are rated values exceeding which the product could suffer physical damage. These values must therefore not be
Recommended Operating Conditions
Pin Descriptions
AL8805
Document number: DS35030 Rev. 1 - 2
ESD HBM
Symbol
Pin Name
ESD MM
Symbol
V
V
V
V
CTRL
T
GND
CTRLDC
V
SET
T
CTRLH
SW
V
I
CTRLL
LEAD
V
I
V
CTRL
T
SW
T
exceeded under any condition. Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions
should be taken when handling and transporting these devices
SW
SW
ST
IN
J
IN
IN
J
Human Body Model ESD Protection
Machine Model ESD Protection
Continuous V
SW voltage relative to GND
CTRL pin input voltage
Switch current
Junction Temperature
Lead Temperature Soldering
Storage Temperature Range
Operating Input Voltage relative to GND
Voltage High for PWM dimming relative to GND
Voltage range for 20% to 100% DC dimming relative to GND
Voltage Low for PWM dimming relative to GND
Continuous switch current
Junction Temperature Range
Pin Number
1
2
3
4
5
IN
pin voltage relative to GND
Switch Pin. Connect inductor/freewheeling diode here, minimizing track length at this pin
to reduce EMI.
GND Pin
Dimming and On/Off Control Input.
•
•
•
•
Set Nominal Output Current Pin. Configure the output current of the device.
Input Supply Pin. Must be locally decoupled to GND with > 2.2µF X7R ceramic capacitor
– see applications section for more information.
Leave floating for normal operation.
(V
Drive to voltage below 0.4V to turn off output current
Drive with DC voltage (0.5V < V
100% of I
A PWM signal (low level ≤ 0.4V and high level > 2.6; transition times less than 1us)
allows the output current to be adjusted below the level set by the resistor connected
to SET input pin.
CTRL
= V
Parameter
Parameter
OUTnom
REF
= 2.5V giving nominal average output current I
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HIGH EFFICIENCY 30V 1A BUCK LED DRIVER
CTRL
Descriptions
< 2.5V) to adjust output current from 20% to
Min
6.0
2.6
0.5
-40
0
-65 to +150
Ratings
-0.3~36
-0.3~36
-0.3 ~ 6
OUTnom
1.25
200
150
300
2.5
Max
= 0.1/R
125
5.5
2.5
0.4
30
1
AL8805
© Diodes Incorporated
September 2010
S
)
Unit
Unit
kV
°C
°C
°C
°C
V
V
V
V
A
V
V
V
V
A