AP8802_0912 Datasheet, PDF (5/16 Pages) Diodes Incorporated – 1A LED Step-down Converter

AP8802
1A LED Step-down Converter
Electrical Characteristics (V_IN =12V, T_A=25^oC, unless otherwise specified)
Symbol
Parameter
Conditions
Min Typ. Max Unit
V_IN
I_OUT
I_Q
F_OSC
V_THD
V_REF
SET
Operating Input Voltage
Continuous switch current
Quiescent Current
Switching Frequency
Internal Threshold Voltage
Internal Reference Voltage
SET pin input current
Rds(on) On Resistance of MOSFET
I_{SW Leakage} Switch leakage current
EN Voltage High
EN Voltage Low
(Note 4)
V_SET=V_IN-0.2
I_SW=0.8A
ON
OFF
8.0
-
48 V
1
A
-
75 120 μA
-
-
0.5 MHz
184 200 216 mV
-
1.25
-
V
-
5
-
μA
0.65 1.1 Ω
-
-
8 μA
1.25
-
-
V
-
-
0.2 V
θ_JA
Thermal Resistance
Junction-to-Ambient
SOP-8L (Note 5)
SOP-8L-EP (Note 5)
DFN3030-10 (Note 5)
-
82
- °C/W
-
45
- °C/W
-
38
- °C/W
θ_JC
Thermal Resistance
Junction-to-Case
SOP-8L (Note 5)
SOP-8L-EP (Note 5)
DFN3030-10 (Note 5)
-
52
- °C/W
-
7
- °C/W
-
24
- °C/W
Notes:
4. Refer to figure 8 for the device derating curve.
5. Test condition for SOP-8L, SOP-8L-EP and 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 Rev. 5
DS31766
5 of 16
www.diodes.com
DECEMBER 2009
© Diodes Incorporated