AP5725_10 Datasheet, PDF (4/17 Pages) Diodes Incorporated – WHITE LED STEP-UP CONVERTER

AP5725
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
Under Voltage Lockout Hysteretic
I_Q
Quiescent Current
FB=0.35V, No Switching
I_SD Shutdown Current
V_EN < 0.4V
Oscillator
F_OSC Operation Frequency
Dmax Maximum Duty Cycle
Reference Voltage
V_FB
I_FB
MOSFET
Feedback Voltage
FB Pin Bias Current
Rds(on) On Resistance of MOSFET
I_OCP Switching Current Limit
Control and Protection
Normal Operation
EN Voltage High
ON
EN Voltage Low
OFF
I_EN EN Pin Pull Low Current
OVP OVP Threshold
θ_JA
Thermal Resistance Junction-to-
Ambient
SOT26 (Note 2)
TSOT23-6 (Note 2)
DFN2020C-6 (Note2)
θ_JC
Thermal Resistance Junction-to-
Case
SOT26 (Note 2)
TSOT23-6 (Note 2)
DFN2020C-6 (Note 2)
2.7
-
5.5 V
-
2.2 2.4 V
-
85
- mV
-
500
-
μA
-
0.1
1 μA
1
1.2 1.4 MHz
86
90
-
%
0.225 0.25 0.275 V
10
45 100 nA
-
0.95 1.2 Ω
-
750
- mA
1.5
-
-
V
-
-
0.4 V
-
4
6 μA
26
30
34
V
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
AP5725
Document number: DS31844 Rev. 3 - 2
4 of 17
www.diodes.com
July 2010
© Diodes Incorporated