W83321G Nuvoton Technology Corporation of America, W83321G Datasheet - Page 6

• Manufacturer Part Number: W83321G
• Description: IC BUCK SYNC ADJ 8SOIC
• Manufacturer: Nuvoton Technology Corporation of America
• Type: Step-Down (Buck)r

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: -

5. PIN DESCRIPTION
PIN
1
2
3
4
5
6
7
8
UGATE
LGATE
COMP
BOOT
NAME
ISEN
GND
VCC
FB
Supply rail for the high-side MOSFET driver. A bootstrap circuit may be used to
create a BOOT voltage or a separate 12V supply can be used.
Gate drive for the high-side N-channel MOSFET. This pin is also monitored by
the adaptive shoot through protection circuitry to determine when the high-side
MOSFET has turned off.
Ground for analog circuit. Connect it to system ground.
Gate drive for the low-side N-channel MOSFET. This pin is also monitored by
the adaptive shoot through protection circuitry to determine when the low-side
MOSFET has turned off.
+5V supply rail for the lower gate driver and control logic circuit.
Inverting Input of the Error Amplifier. This pin is available for compensation of
the control loop.
Internal Error Amplifier Output Pin. This pin is available for compensation of the
control loop and pulling this pin low with an open drain device will shutdown the
IC.
Current limit threshold setting. Connect a resistor (R
the drain of the low-side MOSFET.
- 6 -
FUNCTION
W83321S/W83321G
OCSET
) between this pin and