AP5726_10 Datasheet, PDF (4/17 Pages) Diodes Incorporated – WHITE LED STEP-UP CONVERTER

AP5726
WHITE LED STEP-UP CONVERTER
Electrical Characteristics (V_IN = 3.6V, T_A = 25°C, unless otherwise specified.)
Symbol
Parameter
Conditions
Min Typ. Max Unit
System Supply Input
V_IN Operating Input Voltage
UVLO Under Voltage Lockout
2.7
-
5.5
V
-
2.2 2.4
V
Under Voltage Lockout
Hysteresis
I_Q Quiescent Current
I_SD Shutdown Current
Oscillator
F_OSC Operation Frequency
Dmax Maximum Duty Cycle
FB=0.41V, No Switching
V_EN < 0.4V
-
85
-
mV
-
500
-
μA
-
0.1
1
μA
1
1.2 1.4 MHz
86
90
-
%
Reference Voltage
V_FB Feedback Voltage
I_FB FB Pin Bias Current
MOSFET
0.279 0.31 0.341 V
10
45 100 nA
Rds(on) On Resistance of MOSFET
-
0.95 1.2
Ω
I_OCP Switching Current Limit
Control and Protection
Normal Operation
-
750
-
mA
EN Voltage High
ON
1.5
-
-
V
EN Voltage Low
OFF
-
-
0.4
V
I_EN EN Pin Pull Low Current
OVP OVP Threshold
-
4
6
μA
26
30
34
V
θ_JA
Thermal Resistance Junction-to-
Ambient
SOT26 (Note 2)
TSOT23-6 (Note 2)
DFN2020C-6 (Note 2)
θ_JC
Thermal Resistance Junction-to-
Case
SOT26 (Note 2)
TSOT23-6 (Note 2)
DFN2020C-6 (Note 2)
162
152
o_C/W
200
36
32
o_C/W
30
Notes: 2. Test condition for SOT26, TSOT23-6 and DFN2020C-6: Device mounted on FR-4 substrate, single-layer PC board, 2oz copper,
with minimum recommended pad layout
AP5726
Document number: DS31845 Rev. 3 - 2
4 of 17
www.diodes.com
July 2010
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