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MAX15021 Datasheet(PDF) 3 Page - Maxim Integrated Products

Part # MAX15021
Description  Dual, 4A/2A, 4MHz, Step-Down DC-DC Regulator with Tracking/Sequencing Capability
PDF  24 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX15021 Datasheet(HTML) 3 Page - Maxim Integrated Products

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Dual, 4A/2A, 4MHz, Step-Down DC-DC
Regulator with Tracking/Sequencing Capability
MAX15021
Maxim Integrated
3
ELECTRICAL CHARACTERISTICS (continued)
(VAVIN = VPVIN_ = VDVDD_ = 3.3V, VPGND_ = VSGND_ = 0V, RT = 25k
Ω, and TA = TJ = -40°C to +125°C, unless otherwise noted.
Typical values are at TA = +25°C.) (Note 3)
Note 3: Specifications are 100% production tested at TA = +25°C and TA = +125°C. Maximum and minimum specifications over
temperature are guaranteed by design.
Note 4: When operating with VAVIN = 2.5V, the maximum switching frequency should be derated to 3MHz.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
PWM CURRENT LIMIT AND HICCUP MODE
VAVIN = 3.3V
4.5
4.9
5.3
Regulator 1 Peak Current Limit
VAVIN = 2.5V
3.4
3.65
3.95
A
VAVIN = 3.3V
4.0
4.9
5.65
Regulator 1 Valley Current Limit
VAVIN = 2.5V
3.0
3.7
4.25
A
VAVIN = 3.3V
2.25
2.45
2.65
Regulator 2 Peak Current Limit
VAVIN = 2.5V
1.70
1.85
1.98
A
VAVIN = 3.3V
2.0
2.5
2.83
Regulator 2 Valley Current Limit
VAVIN = 2.5V
1.5
1.85
2.13
A
Number of Cumulative Current-Limit
Events to Hiccup
NCL
4
Clock
Cycles
Number of Consecutive Noncurrent
Limit Cycles to Clear NCL
NCLR
3
Clock
Cycles
Hiccup Timeout
NHT
8192
Clock
Cycles
ENABLE/SEL
EN_ Threshold
VEN_ rising
1.207
1.225
1.243
V
EN_ Hysteresis
0.12
V
EN_ Input Current
-2.5
+2.5
µA
SEL High Threshold
0.85 x VAVIN
V
SEL Low Threshold
0.2 x VAVIN
V
SEL Input Bias Current
Present only during startup
-100
+100
µA
OSCILLATOR
Switching Frequency Range
fSW
fSW = 3MHz x [VRT(V)/1.067(V)]
(Note 4)
500
4000
kHz
fSW
≤ 1500kHz
-6
+6
Oscillator Accuracy
fSW > 1500kHz
-10
+10
%
Phase Shift Between Regulators
180
Degrees
RT Current
0 < VRT < 1.067V
31.30
32
32.58
µA
RT Voltage Range
VRT
0.13
1.067
V
Minimum Controllable On-Time
60
ns
Minimum Controllable Off-Time
60
ns
PWM Ramp Amplitude
VAVIN/4
V
PWM Ramp Valley
0.3
V
THERMAL SHUTDOWN
Thermal Shutdown Temperature
Temperature rising
+160
°C
Thermal Shutdown Hysteresis
15
°C



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