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XRP7708 Datasheet(PDF) 3 Page - Exar Corporation

Part # XRP7708
Description  Quad Channel Digital PWM Step Down Controller
PDF  27 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRP7708 Datasheet(HTML) 3 Page - Exar Corporation

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d C
Ch
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Diig
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© 2010 Exar Corporation
3/27
Rev. 1.0.3
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
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
I2C Specification
Parameter
Min.
Typ.
Max.
Units
Conditions
I2C Speed
400
kHz
Based upon I2C master clock
Input Pin Low Level, VIL
1.0
V
Input Pin High Level, VIH
2.97
V
Hysteresis of Schmitt Trigger
Inputs, VHYS
0.165
V



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