Position: Home > DataSheet > Index W > W83 Series > W83320S, W83321G, W83321S

Low Cost Custom Prototype PCB Manufacturer

W83320S, W83321G, W83321S

Table of contents:
Info of W83320S
Info of W83321G
Info of W83321S

W83320S, W83321G, W83321S Selling Leads, Datasheet

MFG:Nuvoton Technology Corporation of America Category:Integrated Circuits (ICs) Package Cooled:ex-stcok D/C:2008

W83320S, W83321G, W83321S Datasheet download

Five Points

Part Number: W83320S

Category: Integrated Circuits (ICs)

MFG: Nuvoton Technology Corporation of America

Package Cooled: ex-stcok

D/C: 2008

Description: IC SYNC BUCK REG 8-SOIC

Attentive hint

Want to post a buying lead? If you are not a member yet, please select the specific/related part number first and then fill the quantity and your contact details in the "Request for Quotation Form" on the left, and then click "Send RFQ".Your buying lead can then be posted, and the reliable suppliers will quote via our online message system or other channels soon.

How to buy ?

How long will receive a response.

Top Sellers:

TOP

W83320S General Description

The W83320S is a high-speed, N-Channel synchronous buck regulator controller optimized for wide reference input range. The W83320S employs adjustable frequency ranging from 100 KHz to 400 KHz voltage-mode PWM control architecture. The regulator is biased from a 5V rail and the power for the high-side MOSFET can be supplied by a separate 12V rail or supplied from the internal charge pump.

A Current limit protection is implemented by monitoring the voltage drop across the switch ON resistance of the low-side MOSFET. This method can eliminate the requirement of extra current sensing resistor and avoids false trigger of OC protection when VIN varies efficiently. The adaptive non-overlapping MOSFET gate drivers help avoid potential shoot-through problems while maintaining high efficiency. All these together with Power-good flag, enable and soft start features make power sequencing easy.

W83320S Features

·1.8V to 5V power stage input voltage
·Providing +/-1.5% reference voltage
·Power Good flag
·Current limit without sense resistor
·Soft start
·Switching frequency from 100 kHz to 400 kHz
·Tiny plastic SOP-14 package

W83320S Typical Application

· DDR SDRAM and AGP core power for Desktop PC
· Set-Top Boxes/ Home Gateways
· Core Logic Regulators
· High-Efficiency Buck Regulation

W83320S Connection Diagram

W83321G Parameters

Technical/Catalog Information	W83321G
Vendor	Nuvoton Technology Corporation of America
Category	Integrated Circuits (ICs)
Type	Step-Down (Buck)
Number of Outputs	1
Voltage - Input	5V
Voltage - Output	0.8 ~ 5 V
Current - Output	-
Power - Output	-
Package / Case	8-SOIC
Packaging	Tube
Internal Switch(s)	No
Synchronous	Yes
Rds (On)	-
Operating Temperature	0°C ~ 70°C
Frequency - Switching	250kHz
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	W83321G W83321G

W83321G General Description

The W83321S is a high-speed, N-Channel synchronous buck regulator controller. The W83321S employs fixed-frequency voltage-mode PWM control architecture. Both high-side and low-side MOSFETs are lower cost N-Channel type. The regulator is biased from a 5V rail and the power for the high-side MOSFET can be supplied by a separate 12V rail or supplied from a local charge pump.

Current limit is achieved by monitoring the voltage drop across the on resistance of the low-side MOSFET. This method eliminates the requirement of extra current sensing resistor and avoids false trigger of OC protection when VIN varies. The adaptive non-overlapping MOSFET gate drivers help avoid potential shoot-through problems while maintaining high efficiency.

W83321G Features

Operates from +5V Input
0.8V to VIN Output Range
- 0.8V Internal Reference
- ±1.5% Over Line Voltage and Temperature
􀁹 Drives N-Channel MOSFETs
􀁹 Simple Single-Loop Control Design
- Voltage-Mode PWM Control
Fast Transient Response
Lossless, Programmable Overcurrent Protection
- Uses Lower MOSFET's Rds (on)
- Current limit without sense resistor
Small Converter Size
- 250 kHz Fixed Frequency Oscillator
- Internal Soft Start
- Tiny plastic SOP-8 package

W83321G Typical Application

Motherboard Power Supplies Regulation
Subsystem Power Supplies
- PCI/AGP/GTL+ Buses
- ACPI Power Control
- SSTL-2 and DDR SDRAM Bus Termination Supply
Cable Modems, Set Top Boxes, and DSL Modems
DSP and Core Communications Processor Supplies
Memory Power Supplies
Personal Computer Peripherals
Industrial Power Supplies
5V-Input DC-DC Regulators
Low-Voltage Distributed Power Supplies

W83321G Connection Diagram

W83321S General Description

W83321S Features

W83321S Typical Application

W83321S Connection Diagram

Hotspot Suppliers Product

Product List A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9

MT58L64L18CT-10

Price: 4-6 USD

MT58L64L18CT-10 TQFP100
DL-7140-211M

Price: 5-6.5 USD

DL-7140-211M laser tube
74LVC74APG

Price: 4-5 USD

74LVC74APG - IC FLIP FLOP D-Type POS-EDG DUAL 14TSSOP
CY28346ZI-2

Price: 6.5-8 USD

CYPRESS - Clock Synthesizer with Differential CPU Outputs
PI5V330QEX

Price: 0.284-0.286 USD

PI5V330QEX Pericom Multiplexer Switch ICs
BSM300GA120DN2

Price: 1-2 USD

IGBT power module, Single switch, 1200 V, Collector-emitter voltage, 430A
SVA150XG04TB

Price: 1-2 USD

a-Si TFT-LCD, NEC, 228.096Hmm, 560V
PC354N1

Price: 0.124-0.2 USD

PC354N1T - Mini-flat Package, AC Input Type Photocoupler - Sharp Electrionic Components
RL1210JR-070R22L

Price: 0.177-0.178 USD

RL1210JR51-XX-BL - Thick Film Chip Resistor Low Ohmic - TAITRON Components Incorporated
STPS140A

Price: 0.053-0.055 USD

STPS140A - POWER SCHOTTKY RECTIFIER - STMicroelectronics
STA013

Price: 1.45-1.5 USD

STA013 - MPEG 2.5 LAYER III AUDIO DECODER - STMicroelectronics
SMBJ5347B

Price: 0.073-0.075 USD

SMBJ5347B - 5 Watt Surface Mount Silicon Zener Diodes - Micro Commercial Components