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AP5724
Recommended Operating Conditions (@T A = +25°C, unless otherwise specified.)
Symbol
V IN
T J
T A
Input Voltage
Operating Junction Temperature
Operating Ambient Temperature
Parameter
Min
2.7
-40
-40
Max
5.5
125
85
Unit
V
°C
°C
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
UVLO
Operating Input Voltage
Under Voltage Lockout
Under Voltage Lockout Hysteretic
2.7
—
—
—
2.2
85
5.5
2.4
—
V
V
mV
I Q
I SD
Quiescent Current
Shutdown Current
FB = 0.2V, No Switching
V EN < 0.4V
—
—
500
0.1
—
1
μ A
μ A
Oscillator
F OSC
Operation Frequency
1
1.2
1.4
MHz
Dmax Maximum Duty Cycle
86
90
—
%
Reference Voltage
V FB
I FB
Feedback Voltage
FB Pin Bias Current
0.09
10
0.1
45
0.11
100
V
nA
MOSFET
Rds(on)
On Resistance of MOSFET
—
0.95
1.2
?
I OCP
Switching Current Limit
Normal Operation
—
750
—
mA
Control and Protection
EN
EN
I EN
OVP
Voltage High
Voltage Low
EN Pin Pull Low Current
OVP Threshold
ON
OFF
1.5
—
—
26
—
—
4
30
—
0.4
6
34
V
V
μ A
V
SOT26 (Note 3)
—
162
—
θ JA
Thermal Resistance Junction-to-Ambient TSOT26 (Note 3)
U-DFN2020-6 (Note 3)
SOT26 (Note 3)
—
—
—
152
200
36
—
—
—
°C/W
θ JC
Thermal Resistance Junction-to-Case
TSOT26 (Note 3)
—
32
—
°C/W
U-DFN2020-6 (Note 3)
—
30
—
Note:
3. Test condition for SOT26, TSOT26 and U-DFN2020-6: Device mounted on FR-4 substrate, single-layer PC board, 2oz copper, with minimum
recommended pad layout
AP5724
Document number: DS31843 Rev. 4 - 2
3 of 15
www.diodes.com
December 2013
? Diodes Incorporated
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