XRP7714 Exar, XRP7714 Datasheet - Page 3

• Manufacturer Part Number: XRP7714
• Description: Quad Channel Digital PWM Step Down Controller
• Manufacturer: Exar

Note 2: The maximum duty cycle represents the maximum duty cycle commanded by the DPWM, is guaranteed by design,
and internally set to ensure proper sampling of the current during the off-time.
3.3V CMOS logic compatible, 5V tolerant.
© 2010 Exar Corporation
LDO=HIGH
LDOOUT Short Circuit Current
Limit
Linearity Error Integral
Linearity Error Differential
Input Dynamic Range VIN1
Input Dynamic Range VIN2
ADC LSB
Input Dynamic Range
Output frequency range
Output Frequency Accuracy
Channel-to-channel phase shift
Minimum On Time
Dead Time Adjustment Step
CLOCK IN Synchronization
Range
Maximum Duty Cycle
Input Pin Low Level
Input Pin High Level
Input Pin Leakage Current
Input pin Capacitance
Output Pin Low Level
Output Pin High Level
Output Pin High Level (no load)
Auxiliary ADCs
Isense ADC
PWM Generators and Oscillator
Digital Input/Output Pins (GPIO0-GPIO5)
Parameter
Parameter
Parameter
Parameter
Parameter
2
Min.
Min.
4.75
4.75
Min.
Min.
Min.
110
300
-10
2.0
2.4
86
78
-1
-5
0
Q
Q
u
u
Typ.
Typ.
Typ.
Typ.
Typ.
a
a
1.5
3.3
90
40
13
5
5
d
d
C
C
h
h
a
a
Max.
Max.
Max.
Max.
1500
Max.
-320
220
0.8
0.4
3.6
25
25
10
10
n
n
3/27
2
1
5
n
n
e
e
l
l
D
D
Units
Units
Units
Units
Units
LSB
LSB
kHz
deg
mA
mV
mV
µA
pF
i
%
ns
ns
ns
%
%
%
i
V
V
V
V
V
V
V
g
g
i
i
t
t
a
a
l
l
•
•
•
•
•
•
•
•
•
•
•
•
•
P
P
W
W
0mA<I
V
Referred to the input
Steps defined in the table in the PWM
Switching Frequency Setting section
below
1nF of gate capacitance
Switching frequency = 300kHz
10% to 90% duty cycle, Frequency
dependant; refer to the graph in
performance characteristic section
Switching frequency = 1.5MHz
10% to 90% duty cycle, Frequency
dependant; refer to the graph in
performance characteristic section
Switching frequency = 300kHz
Switching frequency = 1.5MHz
V
I
I
I
SINK
SOURCE
SOURCE
LDOOUT
IO
M
=3.3V
M
=1mA
=1mA
=0mA
S
=0V
S
LDOOUT
t
t
e
e
p
p
<100mA
Conditions
Conditions
Conditions
Conditions
Conditions
D
D
o
o
w
w
n
n
www.DataSheet4U.com
X
X
C
C
R
R
o
o
P
n
P
n
Rev. 1.1.3
t
t
7
7
r
r
o
o
7
7
l
l
1
1
l
l
e
e
4
4
r
r