Electrical characteristics (continued) – Rainbow Electronics MAX15058 User Manual
Page 3
High-Efficiency, 3A, Current-Mode
Synchronous, Step-Down Switching Regulator
MAX15058
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 5V, T
A
= -40NC to +85NC, unless otherwise noted. Typical values are at T
A
= +25NC.) (Note 3)
Note 3: Specifications are 100% production tested at T
A
= +25NC. Limits over the operating temperature range are guaranteed by
design and characterization.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LX Leakage Current
V
EN
= 0V
10
F
A
RMS LX Output current
3
A
OSCILLATOR
Switching Frequency
f
SW
850
1000
1150
kHz
Maximum Duty Cycle
D
MAX
94
%
Minimum Controllable On-Time
70
ns
Slope Compensation Ramp
Valley
1.15
V
Slope Compensation Ramp
Amplitude
V
SLOPE
Extrapolated to 100% duty cycle
320
mV
ENABLE
EN Input High Threshold Voltage
V
EN
rising
1.45
V
EN Input Low Threshold Voltage
V
EN
falling
0.4
V
EN Input Leakage Current
V
EN
= 5V
0.025
F
A
SKIP Input Leakage Current
V
SKIP
= V
EN
= 5V
25
F
A
SOFT-START, PREBIAS, REFIN
Soft-Start Current
I
SS
V
SS/REFIN
= 0.45V, sourcing
10
F
A
SS/REFIN Discharge Resistance
R
SS
I
SS/REFIN
= 10mA, sinking
8.3
I
SS/REFIN Prebias Mode Stop
Voltage
V
SS/REFIN
rising
0.58
V
External Reference Input Range
0
IN - 1.8
V
HICCUP
Number of Consecutive Current-
Limit Events to Hiccup
8
Events
Timeout
1024
Clock
Cycles
POWER-GOOD OUTPUT
PGOOD Threshold
V
FB
rising
0.535
0.555
0.575
V
PGOOD Threshold Hysteresis
V
FB
falling
28
mV
PGOOD V
OL
I
PGOOD
= 5mA, V
FB
= 0.5V
20
60
mV
PGOOD Leakage
V
PGOOD
= 5V, V
FB
= 0.65V
0.013
F
A
THERMAL SHUTDOWN
Thermal Shutdown Threshold
150
N
C
Thermal Shutdown Hysteresis
Temperature falling
20
N
C