BA07CC0WFP-E2

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Linear voltage regulator is a type of voltage regulator that assists to maintain local regulator dc output within safe levels to prevent overload or breakdown of the system. The BA07CC0WFP-E2 is a Dual Output Low Dropout (LDO) regulator IC for multiple uses, including providing stable output voltage even in the conditions that require high-precision regulation below 1V. It is characterized by a low quiescent current, low dropout voltage, and low noise.

Features

• Low Dropout Voltage: 225mV (Typ.) at 200mA Output Voltage
• High Accuracy: ±1.0% ±2mV (typ.)
• Low Quiescent Current: 0.3mA (Typ.)
• Shutdown Mode: OFF mode current : 0.1µA (Typ.)
• Output ON Status Output Voltage Displacement : 0mV
• Output Noise Voltage: 0.1µVrms (typ.) at 1.2V/1mA
• Protection Circuits: Overcurrent Protection, Thermal Shut-down

Applications

The BA07CC0WFP-E2 is ideal for providing power for microprocessors, DSPs, memory, LCD drivers, and voltage reference circuits. Typical applications include cellular phones, PDAs, digital still cameras, portable-type audio products, notebook PCs, PCs, and any other small low-power systems. The BA07CC0WFP-E2 provide high-precision and low noise output, as well as low quiescent current and low dropout voltage.

Working Principle

The BA07CC0WFP-E2 is a type of low dropout (LDO) regulator. It generates a regulated output voltage from an input voltage source that is up to 0.8V lower than the output voltage. An internal current sensing circuit is used to maintain the regulated output voltage by controlling the switch on/off cycle of the pass element at a suitable duty cycle. An overcurrent protection circuit is also provided which prevents the overcurrent due to a large current demand or a short circuit.

The BA07CC0WFP-E2 has two integrated output voltage regulators, one for VOUT1 and one for VOUT2. Each regulator has its own independent control circuit and each output voltage can be individually programmed by the external resistors.

The BA07CC0WFP-E2 output transistor is a type of pass element which acts like a switch. When the regulator is in regulation, the output transistor is in either the on state or the off state. When the transistor is on, the voltage across the output transistor is low and the output current flows. When the transistor is off, the voltage across the transistor is high and the output current does not flow.

The overcurrent protection circuit uses an internal detection circuit to sense load current in order to prevent overcurrent due to a large load demand or a short circuit. When an overcurrent condition is detected, the output transistor is turned off and the circuit is turned off in the shutdown state. The overcurrent limit is typically about 0.7A for the BA07CC0WFP-E2.

In addition, the BA07CC0WFP-E2 also features thermal shutdown protection to protect the regulator from thermal stress. This protection circuit is activated when the temperature of the die exceeds the limit of the thermal shutdown circuit. If the temperature exceeds the limit, the output transistor is turned off, putting the regulator into shutdown mode.

Conclusion

The BA07CC0WFP-E2 is a dual output low dropout voltage regulator IC with high precision and low noise operation. It is designed to be efficient and reliable while providing a stable output voltage. The device features a low dropout voltage, low quiescent current, low output noise voltage, and overcurrent protection and thermal shut-down protection. It is suitable for applications requiring high-precision regulation below 1V and is be ideal for providing power for microprocessors, DSPs, memory, LCD drivers, and voltage reference circuits.

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