AP8802HSP-13 Diodes Inc, AP8802HSP-13 Datasheet - Page 5

• Manufacturer Part Number: AP8802HSP-13
• Description: IC LED DRIVER HIGH BRIGHT 8SOIC
• Manufacturer: Diodes Inc
• Type: HBLED Driverr

Specifications of AP8802HSP-13

• Constant Current: *
• Constant Voltage: *
• Topology: *
• Number Of Outputs: *
• Internal Driver: *
• Type - Primary: *
• Type - Secondary: *
• Frequency: *
• Voltage - Supply: *
• Voltage - Output: *
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width) Exposed Pad, 8-eSOIC. 8-HSOIC
• Operating Temperature: *
• Current - Output / Channel: *
• Internal Switch(s): Yes
• Efficiency: 92%
• Output Voltage: 60 V
• Output Current: 1 A
• Duty Cycle (max): 0.95 %
• Input Voltage: 8 V to 60 V
• Switching Frequency: 0.5 MHz
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 105 C
• Description/function: Step-down DC/DC converter
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AP8802HSP-13DITR

Applications 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:
AP8802H
Document number: DS32227 Rev. 1 - 2
I
I
LED
LED
=
=
1200
1000
R
V
V
800
600
400
200
V
THD
SET
CTRL
0
REF
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
R
V
THD
0.2
0.2
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
RSET value [Ohms]
1.2
1.2
1.2
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1.5
1.5
1.5
5 of 11
2
2
2
SET
60V 1A LED Step-down Converter
and V
CTRL
3
IN
3
3
and SET. The nominal
AP8802H
LED current @
VCTRL = 1.25V
LED current @
VCTRL = 2.5V
LED current @
VCTRL = 0.625V
© Diodes Incorporated
June 2010