SM3257 Datasheet PDF – USB 2.0 Flash Memory Controller

Part Number: SM3257

Function: USB2.0 Flash Memory Controller

Package: QFN-40 Pin Type

Manufacturer: Silicon Motion

Image:
SM3257 image

Description

The Device is the latest USB Flash Disk controller with highly compatibility, and best performance intended for supporting Single-Channel MLC and TLC NAND type Flash memory in one chip. Based on 0.152um fabricated technology and low power consumption consideration, SM3257 complies with USB power specification ver.2.0 for bus-powered devices. For USB2.0 Flash Disk application, SM3257 supports high capacity up to 4 data Flash banks, “Write Protect” function, PC boot-up from USB2.0 Flash Disk, Password protection, and Secured Partitioning functions.

This controller also delivers extremely high data transfer rate and correct data through reliable 13/24/40-bit ECC engine for the coverage of the MLC/TLC flash read/write disturbance. By integrating 5V to 3.3V regulator and Power-on-Rest components, it will help customers to save overall cost. SM3257 is available with 48pins LQFP package, 48pins TQFP package and 40pins QFN package with a manufacturing-ready turnkey solution now.

Pinout

SM3257 datasheet

Applications

1. USB Flash Drive
2. USB Solid State Disk
3. Embedded Application
4. High-Speed NAND Storage

Reference Site: http://www.usbdev.ru/

Other data sheets are available within the file: SM3257EN-QX

SM3257 Datasheet


SM3257 pdf

 

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OB2269CP Datasheet – Current Mode PWM Controller – LiteON

Part Number: OB2269CP

Function: Current Mode PWM Controller ( With Frequency Shuffling )

Package: SOP-8 Type

Manufacturer: LiteOn Technology

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OB2269CP pwm controller

Description

OB2269CP is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications in above 20W power level.

PWM switching frequency at normal operation is externally programmable and trimmed to tight range.

At no load or light load condition, the IC operates in extended ‘burst mode’ to minimize switching loss.
Lower standby power and higher conversion efficiency is thus achieved.

 

Pinouts:

OB2269CP datasheet pinout

 

Features

1. Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design

2.  Audio Noise Free Operation

3. External Programmable PWM Switching Frequency

4. Internal Synchronized Slope Compensation

 

OB2269CP circuit

 

OB2269CP Datasheet

OB2269CP pdf

Other data sheets are available within the file:  OB2268, OB2268AP, OB2268APV, OB2269


 

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