MAX15039
6A, 2MHz Step-Down Regulator
with Integrated Switches
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
EN
= 5V, C
VDD
= 2.2μF, T
A
= T
J
= -40°C to +85°C, typical values are at T
A
= +25°C, circuit of Figure 1, unless otherwise
noted.) (Note 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
R
FREQ
= 49.9kΩ 0.9 1 1.1
LX Switching Frequency V
IN
= 2.9V to 5.5V
R
FREQ
= 23.6kΩ 1.8 2 2.2
MHz
Switching Frequency Range 500 2000 kHz
LX Minimum Off-Time 78 ns
LX Maximum Duty Cycle R
FREQ
= 49.9kΩ 92 95 %
LX Minimum Duty Cycle R
FREQ
= 49.9kΩ 515%
Average Short-Circuit IN Supply
Current
OUT connected to GND, V
IN
= 5V 0.35 A
RMS LX Output Current 6A
ENABLE
EN Input Logic-Low Threshold EN falling 0.9 V
EN Input Logic-High Threshold EN rising 1.5 V
EN Input Current V
EN
= 0 or 5V, V
IN
= 5V 0.01 μA
MODE
Logic-low, falling 26
Logic V
DD
/2 or open, rising 50MODE Input-Logic Threshold
Logic-high, rising 74
%V
DD
MODE Input-Logic Hysteresis MODE falling 5 %V
DD
MODE = GND -5
MODE Input Bias Current
MODE = V
DD
5
μA
SS
SS Current V
SS
= 0.45V, V
REFIN
= 0.6V, sourcing 6.7 8 9.3 μA
THERMAL SHUTDOWN
Thermal-Shutdown Threshold Rising 165 °C
Thermal-Shutdown Hysteresis 25 °C
POWER GOOD (PWRGD)
V
FB
falling, V
REFIN
= 0.6V 88 90 92
Power-Good Threshold Voltage
V
FB
rising, V
REFIN
= 0.6V 92.5
%
V
REFIN
Power-Good Edge Deglitch V
FB
rising or falling 48
Clock
cycles
PWRGD Output-Voltage Low I
PWRGD
= 4mA 0.03 0.1 V
PWRGD Leakage Current V
IN
= V
PWRGD
= 5V, V
FB
= 0.7V, V
REFIN
= 0.6V 0.01 μA
HICCUP OVERCURRENT LIMIT
Current-Limit Startup Blanking 112
Clock
cycles
Autoretry Restart Time 896
Clock
cycles
