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CS5233-3

ON Semiconductor
Part Number CS5233-3
Manufacturer ON Semiconductor
Description Dual Input Linear Regulator
Published Oct 5, 2022
Detailed Description CS5233−3 500 mA and 1.5 A, 3.3 V Dual Input Linear Regulator with Auxiliary Control The CS5233−3 provides a glitch−free...
Datasheet PDF File CS5233-3 PDF File

CS5233-3
CS5233-3

Overview
CS5233−3 500 mA and 1.
5 A, 3.
3 V Dual Input Linear Regulator with Auxiliary Control The CS5233−3 provides a glitch−free 3.
3 V output from one of three possible supplies, (VIN, VSB and 3.
3 VAUX).
An on−chip linear regulator powers the output when either VIN or VSB is available.
Otherwise AuxDrv turns on an external PFET, which connects the 3.
3 VAUX supply to the output.
The CS5233−3 is intended to provide power to an ASIC on a PCI Network Interface Card (NIC), and meets Intel’s “Instantly Available” power requirements which follow from the Advanced Configuration and Power Interface (ACPI) standards.
Other applications include desktop computers, power supplies with multiple input sources, and PCMCIA interface cards.
The CS5233−3 linear regulator provides a fixed 3.
3 V output at up to 1.
5 A with an overall accuracy of ±2%.
The internal NPN − PNP composite pass transistor provides a low dropout voltage and requires less supply current than a straight PNP design.
Full protection with both current limit and thermal shutdown is provided.
Designed for low reverse current, the IC prevents excessive current from flowing from VOUT to either VIN or ground when the regulator input voltage is lower than the output.
The auxiliary drive control feature allows the use of an external PFET to supply power to the output when the regulator supplies are off.
The CS5233−3 regulator is available in two package types: the 5 Lead D2PAK package (TO−263) and SOIC−8 with 4 Lead Fused (DF8) package.
When powered from the VIN source, the D2PAK−5 is rated for 1.
5 A and the SOIC−8 is rated for 500 mA.
Both packages are rated for 500 mA when only powered from the VSB source.
Features • Linear Regulator − 3.
3 V ± 2% Output Voltage − Current Limit − Thermal Shutdown with Hysteresis − 400 mA Reverse Current − ESD Protected • System Power Management − Auxiliary Supply Control − “Glitch Free” Transition Between 3 Sources − Similar to CS5231−3 • High Output Current Capability − 1.
5 A D2PAK−5 − 500 mA SOI...


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