Electrical characteristics (continued) – Rainbow Electronics MAX15038 User Manual
Page 4

MAX15038
4A, 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
= 49.9k
Ω
0.9
1
1.1
LX Switching Frequency
V
IN
= 2.9V to 5V
R
FREQ
= 23.6k
Ω
1.8
2
2.2
MHz
Switching Frequency Range
500
2000
kHz
LX Minimum Off-Time
78
ns
LX Maximum Duty Cycle
R
FREQ
= 49.9k
Ω
92
95
%
LX Minimum Duty Cycle
R
FREQ
= 49.9k
Ω
5
15
%
Average Short-Circuit IN Supply
Current
OUT connected to GND, V
IN
= 5V
0.15
A
RMS LX Output Current
4
A
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 floating, rising
50
MODE 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