Ap5100, Electrical characteristics – Diodes AP5100 User Manual
Page 5
AP5100
1.2A STEP-DOWN CONVERTER with 1.4MHz SWITCHING
FREQUENCY
AP5100
Document number: DS32130 Rev. 3 - 2
5 of 12
April 2012
© Diodes Incorporated
Electrical Characteristics
(V
IN
= 12V, T
A
= +25°C, unless otherwise noted)
Note: 5. Guaranteed by design.
Symbol
Parameter
Test Conditions
Min
Typ.
Max
Unit
V
FB
Feedback Voltage
4.75V
≤ V
IN
≤ 24V
0.790 0.810 0.830 V
I
FB
Feedback Current
V
FB
= 0.8V
0.1 µA
R
DS(ON)
Switch-On Resistance (Note 5)
0.35
Ω
Switch
Leakage
V
EN
= 0V, V
SW
= 0V
10
µA
Current Limit (Note 5)
2.4
A
f
SW
Oscillator Frequency
V
FB
= 0.6V
1.1 1.4 1.7 MHz
Fold-back
Frequency
V
FB
= 0V
480 kHz
Maximum Duty Cycle
V
FB
= 0.6V
87 %
t
ON
Minimum On-Time (Note 5)
100
ns
Under Voltage Lockout Threshold
Rising
3.8 4.0 4.2 V
Under Voltage Lockout Threshold
Hysteresis
150
mV
EN Input Low Voltage
0.4
V
EN Input High Voltage
1.2
V
EN Input Current
V
EN
= 2V
0.3
µA
V
EN
= 0V
0.1
I
S
Supply Current (Shutdown)
V
EN
= 0V
0.1
1.0
µA
I
Q
Supply Current (Quiescent)
V
EN
= 2V, V
FB
= 1V
0.4
1.0
mA
Thermal Shutdown (Note 5)
140
°C