AP5726 Datasheet, PDF (4/16 Pages) Diodes Incorporated – WHITE LED STEP-UP CONVERTER

AP5726
WHITE LED STEP-UP CONVERTER
Recommended Operating Conditions
Symbol
V_IN
T_J
T_A
Parameter
Input Voltage
Operating Junction Temperature
Operating Ambient Temperature
Min
Max
Unit
2.7
5.5
V
-40
125
o_C
-40
85
o_C
Electrical Characteristics (V_IN=3.6V, T_A=25^oC, unless otherwise specified.)
Symbol
Parameter
Conditions
Min Typ. Max
System Supply Input
V_IN Operating Input Voltage
UVLO Under Voltage Lockout
2.7
-
5.5
-
2.2 2.4
Under Voltage Lockout Hysteretic
-
85
-
I_Q Quiescent Current
I_SD Shutdown Current
Oscillator
FB=0.41V, No Switching
V_EN < 0.4V
-
500
-
-
0.1
1
F_OSC Operation Frequency
Dmax Maximum Duty Cycle
1
1.2 1.4
86
90
-
Reference Voltage
V_FB Feedback Voltage
I_FB FB Pin Bias Current
MOSFET
0.279 0.31 0.341
10
45 100
Rds(on) On Resistance of MOSFET
0.5 0.75 1.0
I_OCP Switching Current Limit
Control and Protection
Normal Operation
-
750
-
EN Voltage High
ON
1.5
-
-
EN Voltage Low
I_EN EN Pin Pull Low Current
OVP OVP Threshold
OFF
-
-
0.4
-
4
6
26
30
34
θJA
Thermal Resistance
Junction-to-Ambient
SOT26 (Note 3)
DFN2020C-6 (Note 3)
162
200
θJC
Thermal Resistance
Junction-to-Case
SOT26 (Note 3)
DFN2020C-6 (Note 3)
36
30
Notes: 3. Test condition for SOT26 and DFN2020C-6: Device mounted on FR-4 substrate, single-layer PC board, 2oz copper, with minimum
recommended pad layout
Unit
V
V
mV
μA
μA
MHz
%
V
nA
Ω
mA
V
V
μA
V
o_C/W
o_C/W
o_C/W
o_C/W
AP5726 Rev. 1
4 of 16
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JUNE 2009
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