BH33NB1WHFV-TR Integrated Circuits (ICs)

Current - Output:	150mA
Base Part Number:	BH33
Supplier Device Package:	HVSOF5
Package / Case:	SOT-665
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	80dB (1kZ)
Current - Quiescent (Iq):	100µA
Series:	--
Voltage Dropout (Max):	0.45V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Overview

BH33NB1WHFV-TR is a linear voltage regulator which is part of power management integrated circuits (PMIC) family. It is intended for low to medium power applications such as battery-operated portable devices, computers, and telecommunications equipment. The device is a three-terminal adjustable voltage regulator, providing a regulated voltage output over a wide operating current range.

Benefits and Features

• Low dropout voltage and low quiescent current
• Wide input voltage range of 1.8V to 6V
• No external components needed for normal operation
• Output voltage can be adjusted from 1.2V to 6V
• High power dissipation capability
• Built-in Over Temperature Protection (OTP)
• Available in various packages including SOT-89 package

Applications

BH33NB1WHFV-TR is suitable for a variety of applications such as handheld battery powered portable devices, cellular phones, PDAs, pagers, portable media players, digital cameras, camcorders, laptop and notebook computers, and other battery-operated electronic devices.

Working Principle

The BH33NB1WHFV-TR voltage regulator is a three-terminal adjustable voltage regulator that can be used in either a series or a shunt mode. In the series mode, the output voltage is set externally by a voltage divider. The input voltage is applied to the device via a series resistor and the output voltage is taken from the output pin. Although the series mode normally requires little or no external compensation, this circuit is subject to the voltage drop on the output pins which may cause an output voltage that is not stable.The shunt mode is used to regulate the input voltage to a predetermined value. In the shunt mode, the output voltage is fed back to the device via a resistor divider, which enables the device to maintain its output voltage regardless of the load current. The shunt mode does not require an output capacitor and therefore provides more loud ripple rejection than a series regulator.

Conclusion

The BH33NB1WHFV-TR linear voltage regulator is one of the most widely used PMICs and is ideal for low-power applications. With its wide input voltage range, low quiescent current, and low dropout voltage, the device is well suited for portable devices, telecommunications, and other battery-powered electronic devices. The device can be used in either a series or a shunt mode and is available in a variety of packages.

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