ADP151ACBZ-1.2-R7

The ADP151ACBZ-1.2-R7 linear voltage regulator, a member of Analog Devices’ Power by Linear Voltage Regulators, is an adjustable sub-microamp low drop out (LDO) voltage regulator with a 1.2V nominal output. It has an input voltage range of 1.35V to 5.5V, an output current of up to 150mA, and an on-chip transistor with a shutdown mode. This chip has high-side current limit and an operating temperature range of -40°C to +125°C.

 

The ADP151ACBZ-1.2-R7 is widely used in mobile phones, smart wear and other portable devices, the most common application fields are:

 

 

The working principle of the ADP151ACBZ-1.2-R7 is based on its integrated circuit base. It utilizes an internal avalanche breakdown transistor to reduce the input voltage to an output voltage lower than the input voltage. It also employs an on-chip shunt transistor to generate a current to the load which is proportional to the control voltage. The output voltages of this regulator range from 1.2V to 1.6V and the output current capability is up to 150mA.

 

The ADP151ACBZ-1.2-R7 utilizes two MOSFETs (metal-oxide-semiconductor field-effect transistors) to establish a voltage regulator breakdown which eventually forms an on-chip shunt transistor. The MOSFETs route the output voltage to the on-chip shunt transistor, forming a negative feedback loop and ensuring the output voltage remains constant. The output voltage of the regulator is then adjusted using an external resistor which varies the control voltage. Finally, the current limit is reported by the dropout voltage of the internal transistor as well as the current limit set by the set resistor.

 

For best performance of the ADP151ACBZ-1.2-R7 voltage regulator, it is recommended to use a minimum of 4uA supply current, with an output voltage range from 1.2V to 1.6V. The ADP151ACBZ-1.2-R7 voltage regulator also features a low drop out voltage and excellent line and load regulation. Additionally, it provides a guaranteed thermal shutdown, overvolatge and current limit protection as well as reverse battery protection.

 

In conclusion, the ADP151ACBZ-1.2-R7 is a reliable and cost-effective linear voltage regulator ideal for use in computer peripheral power supplies, battery chargers, and other portable devices, industrial control and automotive electronics, point of sale (POS) and healthcare monitoring equipment. It is capable of providing an adjustable output voltage range from 1.2V to 1.6V and with an output current of up to 150mA. It also boasts an excellent line and load regulation with low dropout voltage, and provides thermal shutdown, overvoltage, current limit and reverse battery protection.