XRP7740ILB-F Exar Corporation, XRP7740ILB-F Datasheet - Page 25

• Manufacturer Part Number: XRP7740ILB-F
• Description: IC CTRLR PWM/LDO STP-DWN 40TQFN
• Manufacturer: Exar Corporation
• Type: Step-Down (Buck)r

Specifications of XRP7740ILB-F

• Number Of Outputs: 5
• Package / Case: 40-WFQFN Exposed Pad
• Topology: Step-Down (Buck) (4), Linear (1)
• Function: Standby Power and GPIOs
• Frequency - Switching: 1.5MHz
• Voltage/current - Output 1: 0.9 V ~ 5.1 V, 5A
• Voltage/current - Output 2: 0.9 V ~ 5.1 V, 15A
• Voltage/current - Output 3: 0.9 V ~ 5.1 V, 5A
• W/led Driver: No
• W/supervisor: Yes
• W/sequencer: No
• Voltage - Supply: 6.5 V ~ 20 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Current - Output: 5A, 15A
• Voltage - Output: 0.9 ~ 5.1 V
• Voltage - Input: 6.5 ~ 20 V
• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Switching Frequency: 300 KHz to 1500 KHz
• Operating Supply Voltage: 6.5 V to 20 V
• Supply Current: 50 mA
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Output Voltage: 0.9 V to 5.1 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 1016-1352 - EVAL BOARD FOR XRP77401016-1344 - IN-SOCKET PROG BRD VIA USB/GUI
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 1016-1353

XRP7740
Quad-Output Digital PWM Buck Controller
REV 1.1.0
Master/Slave configure of the XRP7740
External Clock Synchronization Master Slave combination
When an external clock is used, the user will need to setup the master to also have an external clock in function.
All of the same rules apply as in the External clock synchronization, Synchronized operation as a Slave unit
section of this document. There are two ways of synchronizing this, either the external clock going to both
Master/Slave CLK_IN, or CLK_IN can go to the Master, and the Master can synchronize SYNC_OUT and
CLK_OUT to the Slave.
CLK_IN
CLK_IN
GPIO1
GPIO1
SYNC_IN
SYNC_OUT
GPIO2
GPIO2
XRP7740
XRP7740
Configured as a
configured
master with
as slave
external clock sync
External clock synchronization Master Slave combination
Alternative External clock synchronization Master Slave combination
EXAR RESERVES THE RIGHT TO MAKE CHANGES TO THIS DATASHEET.
EXAR CONFIDENTIAL, PRELIMINARY & PROPRIETARY. DO NOT DISTRIBUTE OR COPY.
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