XRP7714 Exar, XRP7714 Datasheet - Page 2

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

ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of
the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect
reliability.
VCCD, LDOOUT, GLx, VOUTx ..................................... 6V
VDD ..................................................................... 2.0V
VIN1, VIN2 ............................................................ 27V
LXx .............................................................. -1V to 27V
Logic Inputs ............................................................. 6V
BSTx, GHx .................................................... VLXx + 6V
Storage Temperature .............................. -65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................... 300°C
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for an Operating Junction Temperature of T
Operating Junction Temperature range are denoted by a “•”. Minimum and Maximum limits are guaranteed through test,
design, or statistical correlation. Typical values represent the most likely parametric norm at T
reference purposes only. Unless otherwise indicated, VIN
Note 1: Voltages above 5.1V can be obtained by using an external voltage divider.
© 2010 Exar Corporation
VIN Supply Current in STANDBY
VIN Supply Current in
SHUTDOWN
VIN Supply Current
VIN Supply Current
VOUT Regulation Accuracy
VOUT regulation range
VOUT set point resolution
VOUT set point resolution
VOUT Input Current
VOUT Input Resistance
LDOOUT Output Voltage
LDO=LOW
LDOOUT Output Voltage
Quiescent Current
Step Down Controllers
Low Drop-out Regulator
Parameter
Parameter
Parameter
Min.
Min.
Min.
3.15
4.75
-20
-40
0.9
Q
Q
u
u
Typ.
Typ.
Typ.
180
100
100
120
a
a
3.3
5.0
28
50
50
9
d
d
C
C
h
h
1
a
a
Max.
Max.
Max.
3.45
5.25
= 4.75V to 25V, VIN
5.1
20
40
n
n
2/27
n
n
e
e
l
l
OPERATING RATINGS
Operating Input Voltage VIN
Junction Temperature Range .................... -40°C to 125°C
Thermal Resistance θ
D
D
Units
Units
Units
mA
mA
mA
mV
mV
kΩ
µA
nA
i
i
V
V
g
g
i
i
t
t
a
a
l
l
•
•
•
•
•
2
P
P
= 4.75V to 25V.
W
W
J
LDOOUT enabled (no load)
No switching converter channels enabled
I
Switching frequency = 400kHz
EN=0V, VIN1≥5.2V, VIN2≤25V
4 channels running,
GH and GH = 1nF load each
VIN=12V, Switching frequency = 300kHz
4 channels running,
GH and GH = 1nF load each
VIN=12V, Switching frequency = 1MHz
0.9V ≤ VOUT ≤ 2.5V
2.6V ≤ VOUT ≤ 5.1V
Programmable range of each channel
0.9V ≤ VOUT ≤ 2.5V
2.6V ≤ VOUT ≤ 5.1V
0.9V < VOUT <= 2.5V
2.6V ≤ VOUT ≤ 5.1V
4.75V≤VIN1≤25V
0mA<I
4.75V≤VIN1≤25V
= 25°C only; limits applying over the full
2
C communication active
M
M
JA
S
S
...................................... 18°C/W
LDOOUT
t
t
e
e
p
X
J
p
<100mA
...................... 4.75V to 25V
= 25°C, and are provided for
Conditions
Conditions
Conditions
D
D
o
o
w
w
n
n
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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
1
l
l
e
e
4
4
r
r