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XRP7740EVB Datasheet(PDF) 2 Page - Exar Corporation |
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XRP7740EVB Datasheet(HTML) 2 Page - Exar Corporation |
2 / 28 page X XR RP P7 77 70 08 8 a an nd d X XR RP P7 77 74 40 0 Q Qu ua ad d C Ch ha an nn neell D Diig giitta all P PW WM M S Stteep p D Do ow wn n C Co on nttrro olllleerrss © 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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