MAX15108 Datasheet, PDF (3/19 Pages) Maxim Integrated Products – High-Efficiency, 8A, Current-Mode Synchronous Step-Down Switching Regulator

High-Efficiency, 8A, Current-Mode
Synchronous Step-Down Switching Regulator
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 5V, CSS = 4.7nF, TA = TJ = -40NC to +85NC. Typical values are at TA = +25NC, unless otherwise noted.) (Note 4)
PARAMETER
LX Leakage Current
RMS LX Output Current
OSCILLATOR
Switching Frequency
Maximum Duty Cycle
Minimum Controllable On-Time
ENABLE
EN Input High Threshold Voltage
EN Input Low Threshold Voltage
EN Input Leakage Current
SKIP
Skip Input High Threshold Voltage
Skip Input Low Threshold Voltage
Skip Input Leakage Current
Zero-Crossing Current Threshold
On-Time in Skip Mode
SOFT-START, PREBIAS
Soft-Start Current
SS Discharge Resistance
SS Prebias Mode Stop Voltage
HICCUP
Number of Consecutive
Current-Limit Events to Hiccup
SYMBOL
CONDITIONS
VEN = 0V
fSW
DMAX
VEN rising
VEN falling
VEN = 5V
VSKIP rising
VSKIP falling
VSKIP = 5V
ILX falling
ISS VSS = 0.45V, sourcing
RSS ISS = 10mA, sinking
SS rising
MIN TYP MAX UNITS
10
FA
8
A
850 1000 1150 kHz
94
%
100
ns
1.3
V
0.4
V
1
FA
1.3
V
0.4
V
30
FA
0.7
A
335
ns
10
FA
8.5
I
0.58
V
8
Events
Timeout
1024
Clock
Cycles
POWER-GOOD OUTPUT
PGOOD Threshold
FB rising
0.54 0.56 0.58
V
PGOOD Threshold Hysteresis
FB falling
25
mV
PGOOD VOL
PGOOD Leakage
THERMAL SHUTDOWN
IPGOOD = 5mA, VFB = 0.5V
VPGOOD = 5V, VFB = 0.68V
22
100
mV
1
FA
Thermal Shutdown Threshold
+160
NC
Thermal Shutdown Hysteresis
Temperature falling
25
NC
Note 4: Specifications are 100% production tested at TA = +25NC. Limits over the operating temperature range are guaranteed by
design and characterization.
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