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XRP7740ILBTR-F Datasheet(PDF) 2 Page - Exar Corporation

Part # XRP7740ILBTR-F
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

XRP7740ILBTR-F Datasheet(HTML) 2 Page - Exar Corporation

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© 2012 Exar Corporation
2/28
Rev. 1.2.2
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.
VCCA, VCCD, LDOOUT, GLx, VOUTx............................ 6V
AVDD, DVDD ........................................................ 2.0V
VIN1, VIN2 ............................................................ 22V
LXx..............................................................-1V to 22V
Logic Inputs............................................................. 6V
BSTx, GHx.................................................... VLXx + 5V
Storage Temperature.............................. -65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................... 300°C
OPERATING RATINGS
Operating Input Voltage VINX ........................6.5V to 20V
Junction Temperature Range ....................-40°C to 125°C
Thermal Resistance θJA ....................................24.3°C/W
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for an Operating Junction Temperature of TJ = 25°C only; limits applying over the full
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 TJ = 25°C, and are provided for
reference purposes only. Unless otherwise indicated, VIN1 = 6.5V to 20V, VIN2 = 6.5V to 20V, Enable=HIGH,
CGL = CGH = 1nF.
Quiescent Current
Parameter
Min.
Typ.
Max.
Units
Conditions
VIN Supply Current in STANDBY
9
mA
LDOOUT enabled (no load)
No switching converter channels enabled
I2C communication active
Switching frequency = 400kHz
VIN Supply Current in
SHUTDOWN
180
µA
EN=0V, VIN1=VIN2=12V
VIN Supply Current
28
mA
4 channels running,
GH and GH = 1nF load each
VIN=12V, Switching frequency = 300kHz
VIN Supply Current
50
mA
4 channels running,
GH and GH = 1nF load each
VIN=12V, Switching frequency = 1MHz
Step Down Controllers
Parameter
Min.
Typ.
Max.
Units
Conditions
VOUT Regulation Accuracy
-20
20
mV
• 0.9V ≤ VOUT ≤ 2.5V
-40
40
mV
• 2.6V ≤ VOUT ≤ 5.1V
VOUT regulation range
0.9
5.1
• Programmable range of each channel1
VOUT set point resolution
50
0.9V ≤ VOUT ≤ 2.5V
VOUT set point resolution
100
2.6V ≤ VOUT ≤ 5.1V
VOUT Input Current
1
uA
• 0.9V < VOUT <= 2.5V
VOUT Input Resistance
120
kΩ
2.6V ≤ VOUT ≤ 5.1V
Note 1: Voltages above 5.1V can be obtained by using an external voltage divider.


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