Name: A4491EESTR-T
Brand: Allegro MicroSystems
SKU: A4491EESTR-T
Price: 0.87000 USD
Availability: InStock

Technical Specifications

Parameter Name	Value
Type	Parameter
Factory Lead Time	8 Weeks
Mount	Surface Mount
Mounting Type	Surface Mount
Package / Case	20-WFQFN Exposed Pad
Number of Pins	20
Operating Temperature	-40°C~85°C TA
Packaging	Tape & Reel (TR)
Published	2011
JESD-609 Code	e3
Pbfree Code	yes
Part Status	Active
Moisture Sensitivity Level (MSL)	2 (1 Year)
Number of Terminations	20
ECCN Code	EAR99
Terminal Finish	Matte Tin (Sn)
Subcategory	Switching Regulator or Controllers
Terminal Position	QUAD
Peak Reflow Temperature (Cel)	260
Terminal Pitch	0.5mm
Time@Peak Reflow Temperature-Max (s)	40
Base Part Number	A4491
Function	Step-Down
Number of Outputs	3
Voltage - Input (Max)	23V
Output Voltage	800mV
Output Type	Adjustable
Voltage - Input (Min)	4.5V
Input Voltage-Nom	12V
Analog IC - Other Type	SWITCHING REGULATOR
Output Configuration	Positive
Output Current	2.2A
Max Output Voltage	20.7V
Voltage - Output (Min/Fixed)	0.8V
Topology	Buck
Control Mode	CURRENT-MODE
Frequency - Switching	550kHz
Synchronous Rectifier	No
Min Output Voltage	800mV
Height Seated (Max)	0.8mm
Length	4mm
Width	4mm
RoHS Status	ROHS3 Compliant

A4491EESTR-T Product Details

A4491EESTR-T Overview

It uses the Tape & Reel (TR) package in order to optimize the performance of this voltage regulator. During the development of this harley voltage regulator, 20 terminations were made. A SWITCHING REGULATOR type of analog IC is equipped with this regulator voltage, which is the type of analog IC that is used in it. The harley voltage regulator is available as a 20-WFQFN Exposed Pad package to save space. The voltage regulator is configured with 3 outputs. As you can see, this DC DC switching regulator generates Adjustable output on its output pins. A Surface Mount mounting is required for this switching regulator. Voltage regulators should be operated at -40°C~85°C TA temperature while operating. DC-DC switching regulators reach 550kHz switching frequencies. Despite its low input voltage, this voltage regulator can operate. In this adjusting voltage regulator, the output voltage (Min/Fixed) equates to 0.8V. There is a voltage regulator maximum input voltage of 23V. This voltage regulator's peak reflow temperature is so high as to make it virtually indestructible. For operation, voltage regulator provides a nominal input voltage of 12V. The regulator voltage that you are looking at belongs to the subcategory Switching Regulator or Controllers. There is a DC/DC regulator in this family that belongs to the A4491 family. At 800mV volts, voltage regulator can provide voltage. To operate the voltage regulator 12v, 20 pins are required. The output voltage of this voltage regulator 12v should at least be set at 800mV volts at all times. A maximum voltage of 20.7V can be obtained from the regulator voltage. Normal output current of DC DC switching regulator is 2.2A.