Description

The MB39A126PFV-G-BND-ERE1 is a DC/DC converter IC that enables the charging of Li-ion batteries. This IC uses pulse width modulation (PWM) to control the output voltage and current independently, making it ideal for down-conversion. It has a built-in comparator for voltage detection of the AC adapter, and it can automatically switch between the AC adapter and battery for power supply to the system.

Specifications and Features

• Product Category: IC Chips
• Efficiency: 97% (MAX)
• Built-in two constant current control circuits
• Analog control of the charging current value (+INE1, +INE2 terminal)
• Built-in AC adapter voltage detection function (ACOK, XACOK terminal)
• Output voltage setting accuracy: ±0.74%: MB39A125, 12.6 V/16.8 V ±0.8%: MB39A126 (Ta = −10 °C to +85 °C)
• Built-in high accuracy current detection amplifier (±5%) (At input voltage difference 100 mV), (±15%) (At input voltage difference 20 mV)
• In IC standby mode (Icc =0 µA Typ), make the output voltage setting resistor open to prevent inefficient current loss
• Built-in soft-start circuit
• Standby current: 0 µA (Typ)
• Totem-pole type output for Pch MOS FET

Application Scenarios

The MB39A126PFV-G-BND-ERE1 is suitable for use as a DC/DC converter IC in devices that require the charging of Li-ion batteries, such as mobile phones, laptops, and other portable devices.

Comparison

• High efficiency: 97% (MAX)
• Built-in two constant current control circuits and high accuracy current detection amplifier
• Analog control of the charging current value
• Built-in AC adapter voltage detection function
• Built-in soft-start circuit
• Standby current: 0 µA (Typ)
• Totem-pole type output for Pch MOS FET

• None identified