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MAX20021 Datasheet(PDF) 3 Page - Maxim Integrated Products

Part # MAX20021
Description  Step-Down DC-DC Converters
PDF  16 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX20021 Datasheet(HTML) 3 Page - Maxim Integrated Products

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MAX20021/MAX20022
Automotive Quad, Low-Voltage
Step-Down DC-DC Converters
www.maximintegrated.com
Maxim Integrated │ 3
Electrical Characteristics (continued)
(VA = VPV1 = VPV2 = VPV3 = VPV4 = 5.0V; TA = TJ = -40ºC to +125ºC, unless otherwise noted. Typical values are at TA = +25ºC under
normal conditions, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNIT
SYNC Input Frequency Range
fSYNC
PWM switching frequency = 2.2MHz
(see the Selector Guide)
1.7
2.5
MHz
PWM switching frequency = 3.2MHz
(see the Selector Guide)
2.8
3.5
OUT1, OUT2, OUT3, OUT4—SYNCHRONOUS STEP-DOWN DC-DC CONVERTERS
Fixed DC Output Accuracy
ILOAD = 0mA
+1.5
%
ILOAD = 0mA to IMAX
-3
+3
FB DC Set-Point Accuracy
VSFB_
MAX20022
ILOAD = 0mA
1015
mV
ILOAD = 0mA to IMAX
970
1030
Load Regulation
ILOAD = IMAX
-1.5
-2.5
%
Line Regulation
ILOAD = IMAX/2, VPV_ = 4.5V to 5.5V
+0.3
%
pMOS On-Resistance
VPV_ = 5.0V, ILX_ = 0.2A
125
250
mΩ
nMOS On-Resistance
VPV_ = 5.0V, ILX_ = 0.2A
100
200
mΩ
pMOS Current-Limit Threshold
ILIM
1.0A channel output
(see the Selector Guide)
1.4
1.65
2
A
0.5A channel output
(see the Selector Guide)
0.8
1.1
1.5
Soft-Start Ramp Time
3272
Cycles
OUTS Leakage Current
IB_OUTS_ Externally adjustable output
20
nA
LX Leakage Current
VPV_ = 5.0V, LX_ = VPGND_ or VPV_
0.1
µA
Minimum On-Time
45
66
ns
LX Rise/Fall Time
4
ns
Duty Cycle Range
100
%
OUTS_ Discharge Resistance
VEN_ = VGND
35
Ω
OUT1, OUT2 Phasing
(Note 3)
0
Degrees
OUT3, OUT4 Phasing
(Note 3)
180
Degrees
THERMAL OVERLOAD
Thermal-Shutdown Temperature
TJ rising (Note 4)
+185
ºC
Hysteresis
(Note 4)
15
ºC
OUTPUT POWER-GOOD INDICATORS (PG_)
Output Overvoltage Threshold
VOUT rising (percentage of nominal output)
106
110
114
%
Output Undervoltage Threshold
VOUT falling (percentage of nominal output)
92.5
94
96
%
VOUT rising (percentage of nominal output)
93.5
95
97



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