Electronic Components Datasheet Search |
|
XRP7724 Datasheet(PDF) 9 Page - Exar Corporation |
|
XRP7724 Datasheet(HTML) 9 Page - Exar Corporation |
9 / 29 page X XR RP P7 77 72 24 4 Q Qu ua ad d C Ch ha an nn ne ell D Diig giitta all P PW WM M/ /P PF FM M P Prro og grra am mm ma ab blle e P Po ow we err M Ma an na ag ge em me en ntt S Sy ys stte em m © 2012 Exar Corporation 9/29 Rev. 1.0.1 Name Pin Number Description LX1-LX4 37,31, 26,20 Lower supply rail for the GH high-side gate driver. 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 35,29, 24,18 High side driver supply pin(s). Connect BST to the external capacitor as shown in the Typical Application Circuit on page 2. The high side driver is connected between the BST pin and LX pin and delivers the BST pin voltage to the high side FET gate each cycle. GPI0-GPIO1 9,10 These pins can be configured as inputs or outputs to implement custom flags, power good signals, enable/disable controls and synchronization to an external clock. PSIO0-PSIO2 13,14,15 Open drain, these pins can be used to control external power MOSFETs to switch loads on and off, shedding the load for fine grained power management. They can also be configures as standard logic outputs or inputs just as any of the GPIOs can be configured, but as open drains require an external pull-up when configured as outputs. SDA, SCL 11,12 SMBus/I2C serial interface communication pins. VOUT1-VOUT4 5,6,7,8 Connect to the output of the corresponding power stage. The output is sampled at least once every switching cycle LDO5 44 Output of a 5V LDO. This is a micro power LDO that can remain active while the rest of the IC is in shutdown. This LDO is also used to power the internal Analog Blocks. LDO3_3 1 Output of the 3.3V standby LDO. This is a micro power LDO that can remain active while the rest of the IC is in shutdown. ENABLE 40 If ENABLE is pulled high or allowed to float high, the chip is powered up (logic is reset, registers configuration loaded, etc.). The pin must be held low for the XRP7724 to be placed into shutdown. BFB 42 Input from the 15V output created by the external boost supply. When this pin goes below a pre-defined threshold, a pulse is created on the low side drive to charge this output back to the original level. If not used, this pin should be connected to GND. DGND 17 Digital ground pin. This is the logic ground connection, and should be connected to the ground plane close to the PAD. CPLL 3 Connect to a 2.2nF capacitor to GND. V5EXT 43 External 5V that can be provided. If one of the output channels is configured for 5V, then this voltage can be fed back to this pin for reduced operating current of the chip and improved efficiency. AVDD 4 Output of the internal 1.8V LDO. A decoupling capacitor should be placed between AVDD and AGND close to the chip. PAD 45 This is the die attach paddle, which is exposed on the bottom of the part. Connect externally to the ground plane. ORDERING INFORMATION Part Number Temperature Range Marking Package Packing Quantity Note 1 I2C Default Address XRP7724ILB-F -40°C≤TJ≤+125°C XRP7724ILB YYWW X 44-pin TQFN Bulk Halogen Free 0x28 (7Bit) XRP7724ILBTR-F -40°C≤TJ≤+125°C 2.5K/Tape & Reel Halogen Free XRP7724EVB-DEMO-2P-KIT Evaluation kit includes XRP7724EVB-DEMO-1 Evaluation Board with Power Architect software and XRP77XXEVB-XCM (USB to I2C Exar Configuration Module) “YY” = Year – “WW” = Work Week – “X” = Lot Number; when applicable. |
Similar Part No. - XRP7724 |
|
Similar Description - XRP7724 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |