MB39C601PNF-G-JNEFE1

Voltage - Output:	--
Supplier Device Package:	8-SOP
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Applications:	Lighting
Dimming:	Triac
Frequency:	30kHz ~ 130kHz
Current - Output / Channel:	--
Series:	--
Voltage - Supply (Max):	20V
Voltage - Supply (Min):	9V
Number of Outputs:	1
Internal Switch(s):	Yes
Topology:	Flyback
Type:	AC DC Offline Switcher
Part Status:	Active
Packaging:	Tape & Reel (TR)

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MB39C601PNF-G-JNEFE1 Application Field and Working Principle

Introduction

MB39C601PNF-G-JNEFE1 is a Pulse Width Modulation ((PWM)) LED Driver which belongs to the PMIC - LED Drivers category. It is a highly integrated driver IC which is specifically designed for PWM-controlled LED applications. It enables to drive two LEDs with a total output current up to 600mA with only one external resistor. The excellent performance of the MB39C601PNF-G-JNEFE1 makes it suitable for headlamps, space-saving LED backlights, LED signage and LED decorations.

Features and Benefits

The MB39C601PNF-G-JNEFE1 offers these features:

• High Efficacy up to 90%
• Input Voltage Range (VDD): 4.5V to 26V
• External feedback current control allowing dynamic control of LED string
• Thermal shutdown protection and low standby current
• High accuracy current control
• High accuracy current limit setting (+/-1%)

These features make the MB39C601PNF-G-JNEFE1 highly-integrated, efficient and power-saving, making it the ideal choice for many applications.

Block Diagram

The block diagram below shows the components of the MB39C601PNF-G-JNEFE1. The main components are an Error Amplifier, a Feedback loop, a PWM dimming circuit, a Current Limiting circuit, a Driver circuit and a Protector circuit.

Working Principle

The working principle of the MB39C601PNF-G-JNEFE1 can be split into three main steps.

• Step 1: In Step 1, the output voltage is generated by an external resistor which is connected across the VDD pin and the FB pin. This output voltage will be compared with a reference voltage to regulate the output current. This voltage reference is generated by the Error Amplifier, which is connected to an external resistor across the REF pin and GND pin. The reference voltage will then be added to the output voltage to generate the Error Voltage.
• Step 2: In Step 2, the Error Amplifier will monitor the Error Voltage compared to the reference voltage and output a PWM signal. Depending on the set duty cycle and switching frequency, the PWM signal will then drive the LED Current. The LED current will also be monitored by the Error Amplifier and will be modified according to the PWM signal.
• Step 3: In the last Step, the Current Limiting circuit will control the LED current and voltage. This circuit is activated when the current in the LEDs exceeds the current limit set by the external resistor connected across the CL pin and the GND pin. The current limiting circuit will limit the current in the LEDs and maintains the voltage of the LEDs within the specified limit.

Applications

The MB39C601PNF-G-JNEFE1 is suitable for a wide range of applications. Its efficient performance makes it especially suitable for low power applications such as headlamps, LED lighting, LED signage and other LED decorations. It can also be used in automotive applications, medical applications, industrial lamp applications and other PWM-controlled LED applications.

Conclusion

The MB39C601PNF-G-JNEFE1 is a highly integrated and efficient PWM LED Driver which is specifically designed for PWM-controlled LED applications. It offers high accuracy current control, high efficiency up to 90% and low standby current consumption. The combination of features makes it suitable for many different applications, such as headlamps, LED lighting and LED signage. The excellent performance of this device makes it an ideal choice for space-saving LED backlight applications.

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