Manufacturers
SEMTECH SC2621
Description
Semtech 500kHz Voltage Mode PWM Controller With Linear Power Regulator
Part Number
SC2621
Price
Request Quote
Manufacturer
SEMTECH
Lead Time
Request Quote
Category
PRODUCTS - S
Specifications
Iout Max
18
Operating Frequency
500 kHz
Package
SOIC-14
Vin(V) max
16
Vin(V) min
4
Vout Min
.5
Features
- 1.5 A gate drive current
- 4 V to 16 V power rails
- 500 kHz switching frequency
- Hiccup-mode short circuit protection
- Internal LDO for optimum gate drive voltage
- Internal soft start
- Power rail under-voltage lockout
- Programmable output voltages
- SOIC-14 package
Datasheet
Extracted Text
SC2621
500kHz Voltage Mode PWM Controller
With Linear Power Regulator
POWER MANAGEMENT
Description Features
The SC2621 provides the control and protection features
� 500kHz switching frequency
necessary for a synchronous buck converter and a lin-
� 4V to 16V power rails
ear regulator in high performance graphic card applica-
� Internal LDO for optimum gate drive voltage
tions.
� 1.5A gate drive current
� Programmable output voltages
The SC2621 is designed to directly drive the top and
bottom MOSFETs of the buck converter. It uses an inter- � Internal soft start
nal 8.2V supply as the gate drive voltage for minimum
� Power rail under voltage lockout
driver power loss and MOSFET switching loss. It allows
� Hiccup mode short circuit protection
the converter to operate at 500kHz switching frequency
� SOIC-14 package
with 4V to 16V power rail and as low as 0.5V output. The
SC2621 is capable to drive a N-type MOSFET in a linear
regulator with as low as 0.5V output.
Applications
The SC2621 features soft-start, supply power under volt-
� Graphics processor power supplies on PCI-Express
age lockout, and hiccup mode over current protection.
platform
The SC2621 monitors the output current by using the
� Embedded, low cost, high efficiency converters
Rdson of the bottom MOSFET in the buck converter that
� Point of load power supplies
eliminates the need for a current sensing resistor. The
SC2621 is offered in a SOIC-14 package.
Typical Application Circuit
12V IN
+
3.3V IN
1 14
PN DH
1.5V OUT
2.5V OUT
2 13
LDOG NC
1 2
3 12
LDFB BST
4 11
OCS DRV
5 10
FB DL
+
6 9 +
COMP GND
7 8
NC VCC
SC2621
1
December 17, 2004 www.semtech.com
SC2621
POWER MANAGEMENT
Absolute Maximum Ratings
Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified
in the Electrical Characteristics section is not implied.
Pl arameter Sm ymbo Ms aximu Unit
IV nput Supply Voltage CC 1V 8
BV ST to GND 4V 0
BST
BV ST to PN 1V 0
BST_PN
PV N to GND -V 1 to 30
PN
PN to GND Negative Pulse (t
Frequently asked questions
What makes Elite.Parts unique?
What kind of warranty will the SC2621 have?
Which carriers does Elite.Parts work with?
Will Elite.Parts sell to me even though I live outside the USA?
I have a preferred payment method. Will Elite.Parts accept it?
Why buy from GID?
Quality
We are industry veterans who take pride in our work
Protection
Avoid the dangers of risky trading in the gray market
Access
Our network of suppliers is ready and at your disposal
Savings
Maintain legacy systems to prevent costly downtime
Speed
Time is of the essence, and we are respectful of yours
Related Products
Request a Quote
The quote request has been received
Close
Facing challenges or have inquiries? Feel free to contact us!
Call Us +1-469-283-2440
What they say about us
FANTASTIC RESOURCE
One of our top priorities is maintaining our business with precision, and we are constantly looking for affiliates that can help us achieve our goal. With the aid of GID Industrial, our obsolete product management has never been more efficient. They have been a great resource to our company, and have quickly become a go-to supplier on our list!
Bucher Emhart Glass
EXCELLENT SERVICE
With our strict fundamentals and high expectations, we were surprised when we came across GID Industrial and their competitive pricing. When we approached them with our issue, they were incredibly confident in being able to provide us with a seamless solution at the best price for us. GID Industrial quickly understood our needs and provided us with excellent service, as well as fully tested product to ensure what we received would be the right fit for our company.
Fuji
HARD TO FIND A BETTER PROVIDER
Our company provides services to aid in the manufacture of technological products, such as semiconductors and flat panel displays, and often searching for distributors of obsolete product we require can waste time and money. Finding GID Industrial proved to be a great asset to our company, with cost effective solutions and superior knowledge on all of their materials, it’d be hard to find a better provider of obsolete or hard to find products.
Applied Materials
CONSISTENTLY DELIVERS QUALITY SOLUTIONS
Over the years, the equipment used in our company becomes discontinued, but they’re still of great use to us and our customers. Once these products are no longer available through the manufacturer, finding a reliable, quick supplier is a necessity, and luckily for us, GID Industrial has provided the most trustworthy, quality solutions to our obsolete component needs.
Nidec Vamco
TERRIFIC RESOURCE
This company has been a terrific help to us (I work for Trican Well Service) in sourcing the Micron Ram Memory we needed for our Siemens computers. Great service! And great pricing! I know when the product is shipping and when it will arrive, all the way through the ordering process.
Trican Well Service
GO TO SOURCE
When I can't find an obsolete part, I first call GID and they'll come up with my parts every time. Great customer service and follow up as well. Scott emails me from time to time to touch base and see if we're having trouble finding something.....which is often with our 25 yr old equipment.
ConAgra Foods