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MAX20079 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX20079
Description  Automotive 36V 3.5A Buck Converter with 3.5μA Iq
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

MAX20079 Datasheet(HTML) 4 Page - Maxim Integrated Products

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(VSUP = VEN = 14V, VSYNC = 0V, TJ = -40°C to +150°C unless otherwise noted, VOUT = 5V, (Notes 3 and 4))
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage Range
VSUP
3.5
36
V
After start-up
3.0
36
VSUP_MAX
t < 1s
40
Supply Current
ISUP_OFF
VEN = Low
1
5
μA
ISUP,3.3V
Fixed VOUT (internal) = 3.3V,
fSW = 2.1MHz/400kHz, no load, no switching
3.5
8
μA
ISUP_SW,3.3V
Fixed VOUT (internal) = 3.3V, fSW =
2.1MHz/400kHz, no load, switching (Note 5)
4.5
ISUP,5V
Fixed VOUT (internal) = 5V, fSW = 2.1MHz/
400kHz, no load, no switching
6
10
μA
ISUP_SW,5V
Fixed VOUT (internal) = 5V, fSW = 2.1MHz/
400kHz, no load, switching (Note 5)
7.5
μA
LX Leakage
ILX,leak
VSUP = 36V, LX = 0V or 40V, TA = +25°C
-1
1
μA
UV Lockout
UVLO
VBIAS rising
2.525
2.725
2.925
V
UVLOHYS
Hysteresis
0.13
BIAS Voltage
VBIAS
+5.5V ≤ VSUP ≤ +36V
5
V
BUCK CONVERTER
Voltage Accuracy
VOUT,5V
Fixed VOUT (internal) = 5V,
fSW = 2.1MHz/400kHz
Skip mode
(Note 4)
4.85
5
5.06
V
PWM mode
4.93
5
5.07
VOUT,3.3V
Fixed VOUT (internal) = 3.3V,
fSW = 2.1MHz/400kHz
Skip mode
(Note 4)
3.2
3.3
3.37
Fixed VOUT (internal) = 3.3V,
fSW = 2.1MHz/400kHz
PWM mode
3.25
3.3
3.35
VOUT,3.395V
Fixed VOUT (internal) = 3.395V,
fSW = 2.1MHz
Skip mode
(Note 4)
3.293
3.395
3.465
PWM mode
3.345
3.395
3.445
Output Voltage
Range with External
Resistor-Divider
VOUT
3
12
V
FB Voltage Accuracy
VFB
0.985
1
1.015
V
FB Current
IFB
VFB = 1V, TA = +25°C
0.02
μA
FB Line Regulation
LRFB
VSUP = 6V to 36V
0.02
%/V
High-Side Switch
ON Resistance
RON,HS
VBIAS = 5V, ILX = 1A
70
125
mΩ
Low-Side Switch
ON Resistance
RON,LS
VBIAS = 5V, ILX = 1A
70
125
mΩ
High-Side Current-Limit
Threshold
ILIMPEAK
4.1
4.7
5.3
A
Electrical Characteristics
www.maximintegrated.com
Maxim Integrated │ 4
MAX20079
Automotive 36V 3.5A Buck Converter with 3.5μA Iq



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