MAX16129UADFD+T

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MAX16129UADFD+T Application Field and Working Principle

Power Management Integrated Circuits (PMICs) are electronic components designed to provide power supply management to connect and switch power supplies, monitor battery charge and discharge, and provide different levels and types of power supply voltages. Specialty PMICs are power management devices designed specifically for special applications, such as data communications, medical, and automotive applications that require higher levels of integration and specific protection circuitry.

The MAX16129UADFD+T is a specialized PMIC designed to provide power supply regulation and monitoring for portable computers and other battery-powered, space-constrained devices. The device is a microprocessor-based power management integrated circuit (PMIC) that includes voltage regulation, battery charging, over-current and over-voltage protection, and system monitoring functions.

General Features of the MAX16129UADFD+T

• Operating voltage range: 2.5V to 16.5V
• Operating temperature range: -40°C to +85°C
• Line regulation: 0.25%
• Load regulation: 0.2%
• Ripple rejection: -22 dB (line to load)
• Load transient response time: 200µs
• Charge current accuracy: ±1%
• Two open-drain outputs for over-voltage and over-current protection status
• Two monitoring outputs to monitor input and output voltage, battery temperature, andcharge voltage
• Device package: 20-lead, 3mm x 3mm TQFN

Description

The MAX16129UADFD+T is a general-purpose power management PMIC specifically designed for the needs of portable computers and other power-sensitive, space-constrained applications. The device is well suited for applications such as notebooks, ultra-mobile PCs (UMPCs), and industrial and medical portable devices that require multiple supplies in a small form factor. In addition, it is capable of providing regulated output voltages in a wide range of applications, from low-voltage digital supplies to higher-voltage analog supplies.

The device features a wide input voltage range of 2.5V to 16.5V and delivers a regulated output voltage from 0.9V to 16.5V, with a selectable charging current up to 2A during the charge cycle. Line regulation is 0.25% and load regulation is 0.2%. The device includes adjustable under-voltage lockout (UVLO), soft-start, output overload, thermal shutdown (TSD), and over-voltage protection (OVP). It also has an integrated charge pump to enable high-side output start-up. The device also includes an open-drain output to indicate the presence of an over-voltage or over-current condition.

The device is available in a 20-lead, 3mm x 3mm TQFN package and is specified over the extended-industrial temperature range of -40°C to +85°C. The device is designed to meet the requirements of the latest miniaturized portable device applications.

Working Principle

The MAX16129UADFD+T includes a power management controller that monitors the input voltage, current, output voltage, and battery temperature. The controller then regulates the output voltage, current, and charger current in order to meet the desired output level and prevent over-voltage or over-current conditions. The device also includes a charge pump to enable start-up from low-voltage input sources.

The device is capable of regulating the output voltage from 0.9V to 16.5V, with a selectable charging current up to 2A during the charge cycle. The device has an adjustable under-voltage lockout (UVLO) with selectable thresholds, a soft-start circuit, output overload protection, and a thermal shutdown circuit. The device also has an open-drain output to indicate the presence of an over-voltage or over-current condition.

The MAX16129UADFD+T is designed to meet the requirements of the latest miniaturized portable device applications, including Intel\'s latest Ultrabooks and the Google Chromebook Pixel. The device is well suited for ultra-mobile PCs (UMPCs), and industrial and medical portable devices that require multiple supplies in a small form factor. It also features a wide operating temperature range of -40°C to +85°C, and is available in a 20-lead, 3mm x 3mm TQFN package.

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