LX7165 Datasheet PDF - Microsemi
| Part Number | LX7165 | |
| Description | 5A Constant Frequency Hysteretic Synchronous Buck Regulator | |
| Manufacturers | Microsemi | |
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LX7165
3V to 5.5V, 5A Constant Frequency Hysteretic
Synchronous Buck Regulator with I2C
Production Datasheet
Description
The LX7165 is a digitally controlled step‐down regulator
IC with an integrated 40mΩ high‐side P‐channel
MOSFET and a 14mΩ low‐side N‐channel MOSFET. It
features Microsemi’s proprietary constant‐frequency
hysteretic control engine for near‐instantaneous
correction to line/load transients. It does not require
high‐ESR output capacitors and incorporates energy‐
saving “PSM” (Power Save or Pulse Skip Mode) at light
loads, to extend battery life in mobile applications.
The LX7165 has an I2C serial interface port for output
voltage margining and monitoring if required (it can
also operate in default mode). In addition it includes
robust fault monitoring functions.
The LX7165 will operate from 3V to 5.5V, and is readily
available in 4 fixed output voltage options: 0.8, 0.9V,
0.95V, and 0.97V (no voltage divider is necessary). After
start up, the reference voltage can be adjusted with I2C
with a resolution 4.7mV between 0.6V and 1.2V. The
output voltage can also be adjusted with an external
voltage divider up to 3.3V.
Features
Constant Frequency Hysteretic Control
Extremely Fast Line/Load Transient Response
I2C for Output Adjustment (3.4Mbps)
1.875 MHz Switching Frequency
Extremely Low‐RDSON MOSFETS
Input Voltage Rail 3.3V to 5V
Greater than 5A Output Current
I2C Selectable Power Save Mode for Light‐Load
Efficiency
UVLO, OVP, OCP
0°C to +85°C Ambient Temperature
Available in WLCSP‐20 (0.4mm pitch)
RoHS Compliant
Applications
High Performance HDD
Notebooks/Netbooks/Tablets/Slates
Copyright © 2016
Rev. 1.2, 09/192016
Figure 1: Typical 5V to 1.8V at 5A schematic with or without I2C implemented
Microsemi
Analog Mixed Signal Group
One Enterprise Aliso Viejo, CA 92656 USA, 1-800-713-4113, 949-380-6100, fax 949-215-4996
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LX7165
3V to 5.5V, 5A Constant Frequency Hysteretic
Synchronous Buck Regulator with I2C
Production Datasheet
Functional Block Diagram
Figure 5: Block Diagram
Copyright © 2016
Rev. 1.2, 09/192016
Microsemi
Analog Mixed Signal Group
One Enterprise Aliso Viejo, CA 92656 USA, 1-800-713-4113, 949-380-6100, fax 949-215-4996
Page 5
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for LX7165 electronic component. |
| Information | Total 24 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ LX7165.PDF Datasheet ] | |
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| Part Number | Description | MFRS |
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