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MAX20034 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX20034
Description  Automotive High-Efficiency 2.2MHz, 36V, Dual Buck Controller with 17μA Quiescent Current
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

MAX20034 Datasheet(HTML) 4 Page - Maxim Integrated Products

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(VIN = 14V, CBIAS = 6.8μF, RFOSC = 12kΩ, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at
TA = +25°C. Limits are 100% tested at TA = +25°C and TA = +125°C. Limits over the operating temperature range and relevant supply
voltage range are guaranteed by design and characterization.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Output Voltage-Adjustable
Range
Buck 1, Buck 2
1
10
V
Regulated Feedback
Voltage
VFB1, VFB2 PWM
0.995
1.005
1.015
V
Feedback Leakage
Current
IFB1, IFB2
TA = +25°C
0.01
1
µA
Feedback Line-
Regulation Error
VIN = 3.5V to 36V, VFB_ = 1V
0.01
%/V
Transconductance (from
FB1, 2 to COMP1, 2)
gm
VFB_ = 1V, VBIAS = 5V
300
470
700
µS
Dead Time
DL_ low to DH_ high
15
ns
DH_ low to DL_ high
15
Maximum Duty Cycle
Buck 1, Buck 2
97
99
%
Minimum On-Time
tON,MIN
Buck 1, Buck 2
50
ns
PWM Switching-
Frequency Range
fSW
Programmable
0.22
2.2
MHz
Switching-Frequency
Accuracy
RFOSC = 12kΩ, VBIAS = 5V, 3.3V
2
2.2
2.4
MHz
CS_ Current-Limit
Voltage Threshold
VLIMIT1,
VLIMIT2
VCS_ - VOUT; VBIAS = 5V, VOUT ≥ 2.5V
68
80
92
mV
Soft-Start Ramp Time
Buck 1 and Buck 2
3
5
8
ms
Phase Shift Between
Buck 1 and Buck 2
PWM operation (Note 2)
180
deg
LX1, LX2 Leakage Current
VLX_ = VPGND_ or VIN, TA = +25°C
0.001
1
µA
DH1, DH2 Pullup
Resistance
VBIAS = 5V, lDH = -100mA
3
6
Ω
DH1, DH2 Pulldown
Resistance
VBIAS = 5V, lDH = 100mA
1.5
3
Ω
DL1,2 Pullup Resistance
VBIAS = 5V, lDL = -100mA
3
6
Ω
DL1, DL2 Pulldown
Resistance
VBIAS = 5V, lDL = 100mA
1.5
3
Ω
Output Overvoltage
Threshold
Detected with respect to VFB_ rising
105
108
112
%
Output Overvoltage
Hysteresis
3
%
Electrical Characteristics (continued)
www.maximintegrated.com
Maxim Integrated │ 4
MAX20034
Automotive High-Efficiency 2.2MHz, 36V, Dual Buck
Controller with 17μA Quiescent Current



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