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AP8802
1A LED STEP-DOWN CONVERTER
Electrical Characteristics (T A = +25°C, V IN = 12V; unless otherwise specified.)
Symbol
I OUT
I Q
V THD
V SENSEHYS
SET
V REF
R DS(ON)
Parameter
Continuous switch current
Quiescent Current
Internal Threshold Voltage
Sense threshold hysteresis
SET pin input current
Internal Reference Voltage
On Resistance of MOSFET
Conditions
(Note 9)
V SET = V IN -0.2
I SW = 0.8A
Min
—
—
184
—
—
—
—
Typ.
—
75
200
15
5
1.25
0.65
Max
1
120
216
—
—
—
1.10
Unit
A
μ A
mV
%
μ A
V
?
I SW_LEAKAGE Switch leakage current
SO-8 (Note 10)
—
—
—
82
8
—
μ A
° C/W
θ JA
θ JC
Thermal Resistance Junction-to-
Ambient
Thermal Resistance Junction-to-Case
SO-8EP (Note 10)
U-DFN3030-10 (Note 10)
SO-8 (Note 10)
SO-8EP (Note 10)
U-DFN3030-10 (Note 10)
—
—
—
—
—
45
38
52
7
24
—
—
—
—
—
° C/W
° C/W
° C/W
° C/W
° C/W
Notes:
9. Refer to figure 8 for the device derating curve.
10. Test condition for SO-8, SO-8EP and U-DFN3030-10: Device mounted on FR-4 PCB, 2”x2”, 2oz copper, minimum recommended pad layout on top
layer and thermal vias to bottom layer ground plane. For better thermal performance, larger copper pad for heat-sink is needed.
AP8802
Document number: DS31766 Rev. 9 - 2
4 of 19
www.diodes.com
May 2012
? Diodes Incorporated
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