TC1303B-ZG0EMF

Voltage/Current - Output 3:	--
Base Part Number:	TC1303B
Supplier Device Package:	10-DFN (3x3)
Package / Case:	10-VFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply:	2.7 V ~ 5.5 V
w/Sequencer:	Yes
w/Supervisor:	No
w/LED Driver:	No
Series:	--
Voltage/Current - Output 2:	2.7V, 300mA
Voltage/Current - Output 1:	Adj, 500mA
Frequency - Switching:	2MHz
Number of Outputs:	2
Function:	Any Function
Topology:	Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
Part Status:	Active
Packaging:	Tube

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TC1303B-ZG0EMF Voltage Regulator

TC1303B-ZG0EMF is a Linear + Switching Voltage Regulator and is part of a group of Voltage Regulation products from the PMIC (Power Management Integrated Circuit) family. The TC1303B-ZG0EMF can help provide excellent performance and high power density for applications such as mobile phones, laptop computers, tablets, etc. Therefore, it is ideal for use in a wide range of applications where Power Regulation is necessary.

Overview

The TC1303B-ZG0EMF is a low-voltage, low-cost, low-power Voltage Regulator that supports a wide range of input and output voltages. This voltage regulator operates from a single 5.5 V power supply and is capable of delivering up to 50 mA of input current. This voltage regulator has an adjustable output voltage, an integrated overcurrent protection, and short-circuit protection. The TC1303B-ZG0EMF is available in a surface mount TO-252 package and is suitable for low-power applications.

Description

The TC1303B-ZG0EMF is a switching-mode power supply with a step-down voltage regulator. It is based on the pulse width modulation (PWM) architecture and is used to step down the input voltage to the desired output voltage. The voltage regulator has an integrated PWM controller and a low-dropout (LDO) linear regulator. The PWM controller allows for fast and accurate step down of the input voltage and provides excellent efficient at high frequencies. The linear regulator provides excellent line and load regulation as well as excellent line and load transient response.The TC1303B-ZG0EMF has a current-mode controlled converter and utilizes an adaptive on-time control scheme. This scheme increases the converter efficiency for transient operation and reduces the output voltage ripple. The voltage regulator also features thermal shutdown and short-circuit protection.

Features

The TC1303B-ZG0EMF Voltage Regulator has the following features:

• Input voltage range up to 5.5 V
• Built-in PWM controller
• Built-in LDO linear regulator
• Current-mode control
• High frequency operation up to 1 MHz
• Up to 90% efficiency
• Adjustable output voltage
• Integrated overcurrent protection
• Integrated short-circuit protection
• Thermal shutdown
• Surface mount TO-252 package

Applications

The TC1303B-ZG0EMF Voltage Regulator is widely used in applications such as:

• Mobile phones
• Laptop computers
• Tablets
• Portable medical devices
• Automotive electronics
• Industrial equipment
• Consumer electronics

Working Principle

The TC1303B-ZG0EMF Voltage Regulator is based on the PWM and LDO architectures.The PWM controller is used to convert the input voltage to a fixed frequency, pulse-width-modulated square wave. The PWM controller then passes the square wave to the P-channel power MOSFET, and the switching MOSFET provides the power conversion from the input voltage to the desired output voltage. This P-channel power MOSFET is controlled by the PWM controller in a very fast and efficient manner.The LDO linear regulator is also used as part of the voltage regulation circuit and provides the required voltage regulation. The LDO linear regulator has a simple design and utilizes a low-dropout (LDO) amplifier to provide the required power regulation. The LDO linear regulator has excellent line and load regulation as well as excellent line and load transient response. The TC1303B-ZG0EMF Voltage Regulator also has an integrated thermal protection circuit which monitors the temperature of the voltage regulator and shuts down the regulator if the temperature exceeds the specified limit. The voltage regulator also has integrated overcurrent and short-circuit protection to protect the device from excessive currents. The TC1303B-ZG0EMF is designed for reliable operation in a wide range of applications, including mobile phones, laptop computers, tablets, and other power management applications where power regulation is essential.

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