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XRP7708 Datasheet(PDF) 7 Page - Exar Corporation |
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XRP7708 Datasheet(HTML) 7 Page - Exar Corporation |
7 / 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 7/28 Rev. 1.2.2 Name Pin Number Description DGND 10 Digital Ground. This pin should be connected to the ground plane at the exposed pad with a separate trace. AGND 11 Analog Ground. This pin should be connected to the ground plane at the exposed pad with a separate trace GL1-GL4 35,30,17,22 Output pin of the low side gate driver. Connect directly to the respective gate of an external N-channel MOSFET. GH1-GH4 33,28,19,24 Output pin of the high side gate driver. Connect directly to the respective gate of an external N-channel MOSFET. LX1-LX4 34,29,18,23 Lower supply rail for the high-side gate driver (GHx). Connect this pin to the switching node at the junction between the two external power MOSFETs and the inductor. These pins are also used to measure voltage drop across bottom MOSFETs in order to provide output current information to the control engine. BST1-BST4 32,27,20,25 High side driver supply pin(s). Connect BST to an external boost diode and a capacitor as shown in the front page diagram. The high side driver is connected between the BST pin and LX pin. GPIO0-GPIO3 3,4,5,6 These pins can be configured as inputs or outputs to implement custom flags, power good signals and enable/disable controls. A GPIO pin can also be programmed as an input clock synchronizing IC to external clock. Refer to the “GPIO Pins” Section and the “External Clock Synchronization” Section for more information. GPIO4_SDA, GPIO5_SCL 7,8 I2C serial interface communication pins. These pins can be re-programmed to perform GPIO functions in applications when I2C bus is not used. VOUT1-VOUT4 12,13,14,15 Voltage sense. Connect to the output of the corresponding power stage. LDOOUT 40 Output of the Standby LDO. It can be configured as a 5V or 3.3V output. A compensation capacitor should be used on this pin [see Application Note]. ENABLE 9 If ENABLE is pulled high, the chip powers up (logic reset, registers configuration loaded, etc.). If pulled low for longer than 100us, the XRP7708/40 is placed into shutdown. See applications section for proper sequencing of this pin. AGND Exposed Pad Analog Ground. Connect to analog ground (as noted above for pin 11). ORDERING INFORMATION Part Number Junction Temp Range Marking Package Packing Quantity Note 1 Default I2C Address XRP7708ILB- F -40°C≤TJ≤+125°C XRP7708ILB YYWW X 40-pin TQFN Bulk Halogen Free XRP7708ILBTR-F -40°C≤TJ≤+125°C XRP7708ILB YYWW X 40-pin TQFN 3K/Tape & Reel Halogen Free XRP7740ILB- F -40°C≤TJ≤+125°C XRP7740ILB YYWW X 40-pin TQFN Bulk Halogen Free XRP7740ILBTR-F -40°C≤TJ≤+125°C XRP7740ILB YYWW X 40-pin TQFN 3K/Tape & Reel Halogen Free XRP7740ILB-0X180-F -40°C≤TJ≤+125°C XRP7740ILB YYWW X 0X18 40-pin TQFN Bulk Halogen Free 0X18 XRP7740ILBTR-0X18-F -40°C≤TJ≤+125°C XRP7740ILB YYWW X 0X18 40-pin TQFN 3K/Tape & Reel Halogen Free 0X18 XRP7708EVB XRP7708 Evaluation Board XRP7740EVB XRP7740 Evaluation Board “YY” = Year – “WW” = Work Week – “X” = Lot Number |
Similar Part No. - XRP7708 |
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Similar Description - XRP7708 |
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