AP8802SG-13 Diodes Inc, AP8802SG-13 Datasheet - Page 6
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AP8802SG-13
Manufacturer Part Number
AP8802SG-13
Description
IC LED DRIVER HIGH BRIGHT 8SOIC
Manufacturer
Diodes Inc
Type
HBLED Driverr
Datasheet
1.AP8802SG-13.pdf
(16 pages)
Specifications of AP8802SG-13
Constant Current
Yes
Topology
PWM, Step-Down (Buck)
Number Of Outputs
1
Internal Driver
Yes
Type - Primary
Backlight
Type - Secondary
High Brightness LED (HBLED)
Frequency
500kHz
Voltage - Supply
8 V ~ 48 V
Voltage - Output
48V
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Operating Temperature
-40°C ~ 105°C
Current - Output / Channel
1A
Internal Switch(s)
Yes
Efficiency
92%
High Level Output Current
1 A
Operating Supply Voltage
8 V to 48 V
Maximum Supply Current
120 uA
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
AP8802SGDITR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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:
If the CTRL pin is driven by an external voltage (lower than 2.5V), the average LED current is:
AP8802 Rev. 5
DS31766
I
I
LED
LED
1200
1000
=
=
800
600
400
200
0
R
V
V
V
0 0.15 0.3 0.45 0.6 0.75 0.9 1.05 1.2 1.35 1.5 1.65 1.8 1.95 2.1 2.25 2.4 2.55 2.7 2.85 3
THD
CTRL
SET
REF
R
V
0.2
0.2
THD
SET
0.33
0.33
0.39
0.39
0.47
0.47
0.47
0.56
0.56
0.68
0.68
0.68 0.82
Figure 3: LED Current setting Vs R
0.82
0.82
1
1
1
LED current Versus RSET and VCTRL
www.diodes.com
1.2
1.2
RSET value [Ohms]
1.2
6 of 16
1.5
1.5
1.5
2
2
2
SET
and V
1A LED Step-down Converter
CTRL
IN
3
and SET. The nominal
3
3
DECEMBER 2009
©
AP8802
Diodes Incorporated
LED current @
VCTRL = 1.25V
LED current @
VCTRL = 2.5V
LED current @
VCTRL = 0.625V