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XRP7714ILB-0X14-F Datasheet(PDF) 1 Page - Exar Corporation |
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XRP7714ILB-0X14-F Datasheet(HTML) 1 Page - Exar Corporation |
1 / 29 page X XR RP P7 77 71 14 4 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 olllleerr September 2010 Rev. 1.1.4 Exar Corporation www.exar.com 48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 – Fax. +1 510 668-7001 GENERAL DESCRIPTION The XRP7714 is a quad-output pulse-width modulated (PWM) step-down DC-DC controller with a built-in LDO for standby power and GPIOs. The device provides a complete power management solution in one IC and is fully programmable via an I2C serial interface. Independent Digital Pulse Width Modulator (DPWM) channels regulate output voltages and provide all required protection functions such as current limiting and over-voltage protection. Each output voltage can be programmed from 0.9V to 5.1V without the need of an external voltage divider. The wide range of the programmable DPWM switching frequency (from 300 KHz to 1.5 MHz) enables the user to optimize between efficiency and component size. Input voltage range is from 4.75V to 25V. An I2C bus interface is provided to program the IC as well as to communicate with the host for fault reporting and handling, power rail parameters monitoring, etc. The device offers a complete solution including independently programmable: soft-start, soft- stop, start-up delay and ramp of each PWM regulator. APPLICATIONS • Multi Channel Power Supplies • Audio-Video Equipments • Industrial & Telecom Equipments • Processors & DSPs Based Equipments FEATURES • 4 x 5A Channel Step Down Controller − Programmable Output Voltage 0.9V-5.1V − Programmable 1.5MHz DPWM Frequency − Integrated FET Drivers • 4.75V to 5.5V and 5.5V to 25V Input Voltage Range • Up to 6 Reconfigurable GPIO Pins • Fully Programmable via I2C Interface • Independent Digital Pulse Width Modulator (DPWM) channels • Complete Monitoring and Reporting • Complete Power Up/Down Sequencing • Full On Board Protection OTP, UVLO, OCP and OVP • Built-in 3.3V/5V LDO • PowerArchitect™ Design Software • Green/Halogen Free 40-pin TQFN TYPICAL APPLICATION DIAGRAM Fig. 1: XRP7714 Application Diagram I2C VOUT3 Vout1 VOUT2 LX1 Vout2 Vout3 ENABLE Vout2 Vout4 GL4 GH4 GPIO2 C11 GPIO3 D3 LX4 Vin C14 R2 GPIO0 C10 Vin Vin Vin U1 XRP7714 AVDD 1 DVDD 2 GPIO0 3 GPIO1 4 GPIO2 5 GPIO3 6 GPIO4_SDA 7 GPIO5_SCL 8 ENABLE 9 DGND 10 PGND4 21 GL4 22 LX4 23 GH4 24 BST4 25 VCCD 26 BST2 27 GH2 28 LX2 29 GL2 30 Q4 Q3 L2 C7 C6 GH2 LX2 GL2 Q8 Q7 L4 C16 C15 GH3 GL3 LX3 Q6 Q5 L3 C13 C12 GL4 C8 GH4 LX4 GH1 GL1 LX1 C5 Vout3 Vout4 Vout1 GPIO1 SCL SDA Q2 Q1 L1 C2 C1 VIN: 4.75 TO 25V C3 LDO OUT R1 VCCA ENABLE VCCA VCCD VOUT1 GL2 LX2 GH2 Exposed Pad: DGND C9 D2 D1 C4 VOUT4 D4 VCCD C17 GH3 LX3 VCCD GH1 GL3 GL1 |
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