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EL7554IREZ

Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 4A 28-TSSOP (0.173", 4.40mm Width) Exposed Pad

Manufacturer:

RENESAS
Mfr.Part #:

EL7554IREZ
Datasheet:

EL7554IREZ Datasheet (PDF)
Function:

Step-Down
Output Configuration:

Positive
Topology:

Buck
Output Type:

Adjustable
EDA/CAD Models:

Request Free CAD Models for EL7554IREZ

Email: [email protected]

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Tel: +852 95804164

EL7554IREZ General Description

The EL7554 is a full-feature synchronous 4A step-down regulator capable of up to 96% efficiency. This device operates from 3V to 6V VIN input supply. With internal CMOS power FETs, the device can operate at up to 100% duty ratio, allowing for output voltage range from 0.8V up to nearly VIN. The adjustable high switching frequency of up to 1MHz enables the use of small components, making the whole converter occupy less than 0.58 square inch with components on one side of the PCB. The EL7554 operates at constant frequency PWM mode, making external synchronization possible. The EL7554 features soft-start and full start-up control, which eliminates the in-rush current and enables users to control the start-up of multiple converters to any configuration with ease. The EL7554 also offers a ±5% voltage margining capability that allows raising and lowering of the supplies derived from the EL7554 to validate the performance and reliability of system cards quickly and easily during manufacturing testing. A junction temperature indicator conveniently monitors the silicon die temperature, saving designers time in the tedious thermal characterization. An easy-to-use simulation tool is available for download and can be used to modify design parameters such as switching frequency, voltage ripple, ambient temperature, as well as view schematics waveforms, efficiency graphs, and complete BOM with Gerber layout. The EL7554 is available in a 28 Ld HTSSOP package and is specified for operation over the -40°C to +85°C temperature range.

Key Features

Integrated MOSFETs
4A continuous output current
Up to 96% efficiency
All ceramic capacitors
Multiple supply start-up tracking
Built-in ±5% voltage margining
3V to 6V input voltage
0.58in² footprint with components on one side of PCB
Adjustable switching frequency to 1MHz
Oscillator synchronization possible
100% duty ratio
Junction temperature indicator
Over-temperature protection
Internal soft-start
Variable output voltage down to 0.8V
Power-good indicator
28 Ld HTSSOP package
Pb-free available (RoHS compliant)

Specifications

Function	Step-Down	Output Configuration	Positive
Topology	Buck	Output Type	Adjustable
Number of Outputs	1	Voltage - Input (Min)	3V
Voltage - Input (Max)	6V	Voltage - Output (Min/Fixed)	0.8V
Voltage - Output (Max)	6V	Current - Output	4A
Frequency - Switching	200kHz ~ 1MHz	Synchronous Rectifier	Yes
Operating Temperature	-40°C ~ 85°C (TA)	Mounting Type	Surface Mount