MAX15053_1107 Datasheet, PDF (3/21 Pages) Maxim Integrated Products – High-Efficiency, 2A, Current-Mode Synchronous, Step-Down Switching Regulator

High-Efficiency, 2A, Current-Mode
Synchronous, Step-Down Switching Regulator
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 5V, TA = -40NC to +85NC, unless otherwise noted, typical values are at TA = +25NC.) (Note 4)
PARAMETER
Low-Side Switch Source Current-
Limit Threshold
LX Leakage Current
RMS LX Output Current
OSCILLATOR
Switching Frequency
Maximum Duty Cycle
Minimum Controllable On-Time
Slope Compensation Ramp
Valley
Slope Compensation Ramp
Amplitude
ENABLE
EN Input High Threshold Voltage
EN Input Low Threshold Voltage
EN Input Leakage Current
SKIP Input Leakage Current
SOFT-START, PREBIAS, REFIN
Soft-Start Current
SS/REFIN Discharge Resistance
SS/REFIN Prebias Mode Stop
Voltage
SYMBOL
fSW
DMAX
VSLOPE
ISS
RSS
CONDITIONS
VEN = 0V
Extrapolated to 100% duty cycle
VEN rising
VEN falling
VEN = 5V
VSKIP = VEN = 5V
VSS/REFIN = 0.45V, sourcing
ISS/REFIN = 10mA, sinking
VSS/REFIN rising
MIN TYP MAX UNITS
4
A
10
FA
2
A
850 1000 1150 kHz
94
95.8
%
70
ns
1.15
V
320
mV
1.45
V
0.4
V
0.025
FA
25
FA
10
FA
8.3
I
0.58
V
External Reference Input Range
0
VIN -
1.8
V
HICCUP
Number of Consecutive Current-
Limit Events to Hiccup
8
Events
Timeout
POWER-GOOD OUTPUT
PGOOD Threshold
PGOOD Threshold Hysteresis
PGOOD VOL
PGOOD Leakage
THERMAL SHUTDOWN
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
VFB rising
VFB falling
IPGOOD = 5mA, VFB = 0.5V
VPGOOD = 5V, VFB = 0.65V
Temperature falling
1024
Clock
Cycles
0.535 0.555 0.575
V
28
mV
20
60
mV
0.013
FA
150
NC
20
NC
Note 4: Specifications are 100% production tested at TA = +25NC. Limits over the operating temperature range are guaranteed by
design and characterization.
_______________________________________________________________________________________   3