PAM2421/PAM2422/PAM2423
Document number: DSxxxxx Rev. 1 - 1
4 of 10
www.diodes.com
November 2012
© Diodes Incorporated
PAM2421/ PAM2422/ PAM2423
Product Line o
Diodes Incorporated
Electrical Characteristics (@T
A
= +25°C, V
IN
= V
EN
= 5V, unless otherwise specified.)
Parameter Test Conditions Min Typ Max Units
Input Voltage 2.7 5.5 V
Under Voltage Lockout Threshold
V
IN
Rising
2.5 V
Under Voltage Lockout Hysteresis 200 mV
Quiscent Supply
V
FB
= 1.4V, Not Switching
0.25 0.35
mA
V
FB
= 1.0V, Switching
3 5
Supply Current in Shutdown EN = Ground 0.1 1.0 µA
Switching Frequency 520 kHz
Maximum Duty Cycle 85 %
FB Feedback Voltage 1.237 1.262 1.287 V
FB Input Current 0 80 nA
FB Voltage Line Regulation
V
FB
from 2.7V to 5.5V
0.05 0.15 %/V
Switch Current Limit
PAM2421
V
IN
= 3.2V
Duty Cycle = 70%
3
A
PAM2422 4.5
PAM2421 5.5
Switching On Resisitance
PAM2421 130
mΩ PAM2422 100
PAM2423 70
Switch Leakage Current
V
SW
= 10V, EN = Ground
15 µA
Soft Start Pin Bias Current
V
SS
= 1.2V
2.0 4.5 7.0 µA
Logic High Threshold EN Pin 1.4 V
Logic Low Threshold EN Pin 0.4 V
EN Pull Down Resistor 1 mΩ
Thermal Shutdown Temperature 160 °C
Thermal Shutdown Hystersis 40 °C
