MAX16813ATP+T

Voltage - Output:	--
Base Part Number:	MAX16813
Supplier Device Package:	20-TQFN (4x4)
Package / Case:	20-WFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TA)
Applications:	Automotive, Backlight, Lighting
Dimming:	PWM
Frequency:	200kHz ~ 2MHz
Current - Output / Channel:	150mA
Series:	--
Voltage - Supply (Max):	40V
Voltage - Supply (Min):	4.75V
Number of Outputs:	4
Internal Switch(s):	--
Topology:	SEPIC, Step-Up (Boost)
Type:	DC DC Controller
Part Status:	Active
Packaging:	Tape & Reel (TR)

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MAX16813ATP+T Application Field and Working Principle

Introduction

The MAX16813ATP+T is a PMIC, that helps to control the brightness of all types of solid-state lighting. It helps to provide a highly efficient, low-cost, and high-performance solution for driving LEDs from a variety of power sources. By using this device, power supplies can be as low as 2.5V and still turn on LEDs, which makes it a great choice for energy-efficient LED lighting systems. It also uses sophisticated power sharing and monitoring circuitry, which reduces the need for complex external circuitry, and helps minimize the size of the lighting system.

Application Fields

The MAX16813ATP+T PMIC utilizes an output stage and a control circuit that is ideal for LED lighting applications. It includes a thermal temperature monitoring and control system and an LED current monitoring system, which enables it to be used in a variety of LED applications. Common applications are:

1. General purpose LED lighting
2. Lighting for automotive
3. Lighting for backlighting
4. Lighting for residential
5. Lighting for industrial
6. Medical lighting

Features

The MAX16813ATP+T LED driver has many interesting features that make it an attractive PMIC for LED lighting. These features include:

• A maximum ripple current of 30mA and an accuracy of +/- 5%
• A low quiescent current of 10 µA
• Overvoltage protection up to 6V
• current control resolution down to 4 mA
• A programmable dimming frequency of 20 Hz to 20 kHz
• Thermal shutdown feature to prevent overheating
• Programmable soft start to reduce inrush current on startup
• accurate LED current control with both pulse width modulation (PWM) and analog dimming control
• An accurate temperature monitoring and control system

Working Principle

The MAX16813ATP+T PMIC works in two modes: analog and Pulse Width Modulation (PWM) dimming control. In both modes, the LED is powered with a voltage applied between the LED output pin and the LED driver ground pin. The LED current is controlled by applying a current sense voltage between the LED current sense pin and the LED driver ground pin. The magnitude of the current sense voltage determines the LED current. The MAX16813ATP+T PMIC automatically adjusts the constant current output pin voltage to the required level to regulate the LED current.In analog dimming mode, the LED current is controlled by the magnitude of the voltage applied between the step and ground pins. As the voltage between the step and ground pins increases, the LED current also increases. The magnitude of the current sense voltage applied between the LED current sense pin and the LED driver ground pin determines the magnitude of the current that can be applied to the LED output.In PWM dimming mode, the LED current is controlled by the duty cycle of the voltage applied between the step and ground pins. As the duty cycle increases, the LED current also increases. The magnitude of the current sense voltage applied between the LED current sense pin and the LED driver ground pin determines the maximum duty cycle of the voltage applied between the step and ground pins.

Conclusion

The MAX16813ATP+T PMIC is a great choice for all types of LED lighting applications. Its features include an output stage, a control circuit, overvoltage protection, current control resolution, a programmable dimming frequency, thermal shutdown, programmable soft start, and an accurate temperature monitoring and control system. Additionally, it works in both analog and PWM dimming modes and is able to automatically adjust the constant current output pin voltage to regulate the LED current. This feature makes it a perfect choice for energy-efficient LED lighting systems.

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