AL8807AMP-13 Diodes Inc., AL8807AMP-13 Datasheet - Page 2

• Manufacturer Part Number: AL8807AMP-13
• Description: LED Lighting Drivers High EFF DIMM 36V 1A / 1.3A Buck LED
• Manufacturer: Diodes Inc.

Specifications of AL8807AMP-13

• Rohs: yes
• Input Voltage: 6 V to 36 V
• Operating Frequency: 1 MHz
• Maximum Supply Current: 1 A
• Mounting Style: SMD/SMT
• Package / Case: MSOP-8EP

Pin Descriptions
Functional Block Diagram
AL8807A
Document number: DS35990 Rev. 1 - 2
Pin Name
CTRL
GND
SET
SW
N/C
V
EP
IN
SOT25
—
—
1
2
3
4
5
Pin Number
CTRL
GND
MSOP-8EP
V
5, 6
2, 3
EP
4
1
8
7
IN
50k
Switch Pin. Connect inductor/freewheeling diode here, minimizing track length at this pin to reduce EMI.
GND Pin
LED current Analog Dimming Control Input. – No PWM dimming function.
Connected to internal 2.5V V
LED current is achieved - giving nominal average output current I
For Analog dimming drive with analog voltage < 2.5V
(0.25V < V
lower than this level but at reduced accuracy. Some devices will not totally turn off the LED current.
Soft-start can be implemented by connecting a capacitor to CTRL pin. The amount of soft-start is
dependent on ramp-up of input supply voltage and capacitor on CTRL pin. See apps section.
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.
Exposed pad/TAB.
It should be connected to GND and thermal mass for enhanced thermal impedance.
It should not be used as electrical ground conduction path.
No connection – may be connected to GND.
2.5V
V
CTRL
5V Voltage
Regulator
REF
Dimming
< 2.5V adjusts output current from 10% to 100% of I
Analog
Control
V
2.55V
CTRLH
www.diodes.com
REF
AL8807A
2 of 20
via 50kΩ resistor. So if left open circuit V
–
+
Function
–
+
SET
UVLO
OTP
OUTnom
OUTnom
= 0.1/R
. Device will dim the LED current
CTRL
SW
= V
S
REF
= 2.5V and 100%
AL8807A
© Diodes Incorporated
September 2012