CS5211

Features:

• Switching Regulator Controller
NChannel Synchronous Buck Design
V2 Control Topology
200 ns Transient Response
Programmable Fixed Frequency of 150 kHz750 kHz
1.0 V 1.5% Internal Reference
Lossless Inductor Sensing Overcurrent Protection
Hiccup Mode Short Circuit Protection
Programmable Soft Start
40 ns GATE Rise and Fall Times (3.3 nF Load)
70 ns Adaptive FET Nonoverlap Time
Differential Remote Sense Capability
• System Power Management
5.0 V or 12 V Operation
Undervoltage Lockout
On/Off Control Through Use of the COMP Pin


Pinout




Specifications

Rating		Value	Unit
Operating Junction Temperature, TJ		150	°C
Lead Temperature Soldering:	Reflow: (SMD styles only) (Note 1)	230 peak	°C
Storage Temperature Range, TS		65 to +150	°C
Package Thermal Resistance: JunctiontoCase, RJC JunctiontoAmbient, RJA		30 125	°C/W °C/W
ESD Susceptibility (Human Body Model)		2.0	kV
JEDEC Moisture Sensitivity		1.0

Description

The CS5211 is a low voltage synchronous buck controller. It contains all required circuitry for a synchronous buck converter using external NChannel MOSFETs. High current internal gate drivers are capable of driving high gate capacitance of low RDS(on) NFETs for better efficiency. The V2E control architecture is used to achieve unmatched transient response, the best overall regulation and the simplest loop compensation. The CS5211 is in a 14pin package to allow the designer added flexibility.

The CS5211 provides overcurrent protection, undervoltage lockout, Soft Start and built in adaptive nonoverlap. The CS5211 also provides adjustable fixed frequency range of 150 kHz to 750 kHz. This gives the designer more flexibility to make efficiency and component size compromises. The CS5211 will operate over a 4.5 V to 14 V range using either single of dual input voltage.