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XRP7740EVB Datasheet(PDF) 3 Page - Exar Corporation

Part # XRP7740EVB
Description  Quad Channel Digital PWM Step Down Controllers
Download  28 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRP7740EVB Datasheet(HTML) 3 Page - Exar Corporation

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Stteep
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© 2012 Exar Corporation
3/28
Rev. 1.2.2
Low Drop-out Regulator
Parameter
Min.
Typ.
Max.
Units
Conditions
LDOOUT Output Voltage
LDO=LOW
3.15
3.3
3.45
V
• 6.5V≤VIN1≤20V
0mA<ILDOOUT<100mA
LDOOUT Output Voltage
LDO=HIGH
4.75
5.0
5.25
V
• 6.5V≤VIN1≤20V
0mA<ILDOOUT<100mA
LDOOUT Short Circuit Current
Limit
110
220
mA
• VLDOOUT=0V
Auxiliary ADCs
Parameter
Min.
Typ.
Max.
Units
Conditions
Linearity Error Integral
2
LSB
Linearity Error Differential
-1
1
LSB
Input Dynamic Range VIN1
6.5
20
V
Input Dynamic Range VIN2
6.5
20
V
Isense ADC
Parameter
Min.
Typ.
Max.
Units
Conditions
ADC LSB
5
mV
Referred to the input
Input Dynamic Range
0
-320
mV
PWM Generators and Oscillator
Parameter
Min.
Typ.
Max.
Units
Conditions
Output frequency range
300
1500
kHz
Steps defined in the table in the PWM
Switching Frequency Setting section
below
Channel-to-channel phase shift
step
90
deg
With 4 phase setting
Channel-to-channel phase shift
step
120
deg
With 3 phase setting
Minimum On Time
40
ns
1nF of gate capacitance
Minimum Off Time
125
ns
1nF of gate capacitance
CLOCK IN Synchronization
Range
-5
5
%
Digital Input/Output Pins (GPIO0-GPIO5)
3.3V CMOS logic compatible, 5V tolerant
Parameter
Min.
Typ.
Max.
Units
Conditions
Input Pin Low Level
0.8
V
Input Pin High Level
2.0
V
Input Pin Leakage Current
10
µA
• VIO=3.3V
Input pin Capacitance
5
pF
Output Pin Low Level
0.4
V
• ISINK=3mA
Output Pin High Level
2.4
V
• ISOURCE=1mA
Output Pin High Level (no load)
3.3
3.6
V
• ISOURCE=0mA


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