W83321G Nuvoton Technology Corporation of America, W83321G Datasheet - Page 4
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W83321G
Manufacturer Part Number
W83321G
Description
IC BUCK SYNC ADJ 8SOIC
Manufacturer
Nuvoton Technology Corporation of America
Type
Step-Down (Buck)r
Datasheet
1.W83321G.pdf
(18 pages)
Specifications of W83321G
Internal Switch(s)
No
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
0.8 ~ 5 V
Frequency - Switching
250kHz
Voltage - Input
5V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-SOIC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Output
-
Power - Output
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
W83321G
Manufacturer:
WINBOND/华邦
Quantity:
20 000
1. 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 V
avoid potential shoot-through problems while maintaining high efficiency.
2. FEATURES
- 0.8V Internal Reference
- ±1.5% Over Line Voltage and Temperature
- Voltage-Mode PWM Control
- Uses Lower MOSFET’s Rds (on)
- Current limit without sense resistor
- 250 kHz Fixed Frequency Oscillator
- Internal Soft Start
- Tiny plastic SOP-8 package
Operates from +5V Input
0.8V to VIN Output Range
Drives N-Channel MOSFETs
Simple Single-Loop Control Design
Fast Transient Response
Lossless, Programmable Overcurrent Protection
Small Converter Size
IN
varies. The adaptive non-overlapping MOSFET gate drivers help
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W83321S/W83321G