AP8801SG-13 Diodes Zetex, AP8801SG-13 Datasheet

no-image

AP8801SG-13

Manufacturer Part Number
AP8801SG-13
Description
Conv DC-DC Single Step Down 8V to 48V 8-Pin SOP T/R
Manufacturer
Diodes Zetex
Type
Step Downr
Datasheet

Specifications of AP8801SG-13

Package
8SOP
Number Of Outputs
1
Minimum Input Voltage
8 V
Maximum Input Voltage
48 V
Switching Frequency
500 KHz
Maximum Output Current
0.5 A
Output Type
Fixed
Output Voltage
-0.3 to 50 V
Switching Regulator
Yes
Efficiency
92 %
Operating Temperature
-40 to 105 °C

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AP8801SG-13
Manufacturer:
DIODES
Quantity:
7 500
Features
Applications
Typical Application Circuit
AP8801 Rev. 4
DS31765
LED driving current up to 500mA
Operating input voltage up to 48V
High efficiency up to 92%
High switching frequency up to 500kHz
PWM/DC input for dimming control
Built-in output open-circuit protection
SOP-8L and MSOP-8L are available in “Green”
Molding Compound (No Br, Sb)
Lead Free Finish/RoHS Compliant (Note 1)
Commercial & industrial lighting
Small LCD panel backlight
Appliances interior lighting
Architecture Detail lighting
C
24V_DC
1
= 2.2
μ
F
Figure 1: Typical Application Circuit
CTRL
GND
AP8801
www.diodes.com
SET
SW
1 of 11
V
IN
General Description
The AP8801 is a step-down DC/DC converter designed to drive
LEDs with a constant current. The device can drive up to thirteen
LEDs, depending on the forward voltage of the LEDs, in series
from a voltage source of 8V to 48V. Series connection of the
LEDs provides identical LED currents resulting in uniform
brightness and eliminating the need for ballast resistors. The
AP8801 switches at frequency up to 500kHz. This allows the
use of small size external components, hence minimizing the
PCB area needed.
Maximum output current of AP8801 is set via an external resistor
connected between the V
achieved by applying either a DC voltage or a PWM signal at the
CTRL input pin. An input voltage of 0.2V or lower at CTRL shuts
down the output at SW and puts the device into a low-current
standby state.
500mA LED Step-down Converter
R
L
SET
1
= 100
= 0.43Ω
IN
and SET input pins. Dimming is
μ
H
1
D
©
DECEMBER 2009
AP8801
1
Diodes Incorporated

Related parts for AP8801SG-13

AP8801SG-13 Summary of contents

Page 1

... Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The AP8801 switches at frequency up to 500kHz. This allows the use of small size external components, hence minimizing the PCB area needed. ...

Page 2

... Ordering Information Package S : SOP- MSOP-8L Package Device Code AP8801SG-13 S AP8801M8G-13 M8 Notes Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. ...

Page 3

Pin Descriptions Pin Name Description Switch Pin. Connect inductor/freewheeling diode here, minimizing track length at this pin to SW reduce EMI. GND GND pin SET Set Nominal Output Current Pin. Configure the output current of the device. Dimming and On/Off ...

Page 4

Absolute Maximum Ratings Symbol V VIN pin voltage voltage SW T Junction Temperature J T Lead Temperature Soldering LEAD T Storage Temperature Range ST Caution: The absolute maximum ratings are rated values exceeding which the product could ...

Page 5

Application Information LED Current Control The LED current is controlled by the resistor RSET in Figure 1 connected between V average output current in the LED(s) is defined as THD I LED R SET If the CTRL pin ...

Page 6

Application Information Inductor Selection This section highlights how to select the inductor suitable for the application requirements in terms of switching frequency, LED current accuracy and temperature. 600 100 47 500 68 400 100 300 47 68 200 100 100 ...

Page 7

Application Information The inductor influences the LED current accuracy that the system is able to provide. The following section highlights how to select the inductor in relation to the device packages and the LED current, while maintaining the chip temperature ...

Page 8

Application Information Thermal Considerations The graph below in figure 6, gives details for power derating. This assumes the device to be mounted on a 25x25mm PCB with 1oz copper standing in still air. 1.4 1.2 1 0.8 0.6 0.4 0.2 ...

Page 9

Marking Information (1) SOP-8L Logo Part Number (2) MSOP-8L Logo Part Number AP8801 Rev. 4 DS31765 500mA LED Step-down Converter ( Top View ) Green YY : Year : 08, 09,10~ AP8801 WW : Week : ...

Page 10

Package Information (1) Package Type: SOP-8L 7°~9° 0.3/0.5 1.27typ 4.85/4.95 8x-0.60 6x-1.27 Land Pattern Recommendation (Unit: mm) (2) Package Type: MSOP-8L 1 0.65Bsc. 0.22/0.38 0.05 2.9/3.1 DETAIL "A" AP8801 Rev. 4 DS31765 500mA LED Step-down Converter (All Dimensions in mm) ...

Page 11

DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDING TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY ...

Related keywords