Nisshinbo Micro Devices NJW4750

The NJW4750 is quad channel PMIC including one wide input range buck converter and three secondary regulators. Channel 1 and 2 are buck DC/DC converters, channel 3 can be selected as a synchronous buck converter or LDO and channel 4 is an LDO regulator, therefore it is a flexible solution for various applications. Channel 1 and channel 2 / 3 are operating in anti-phase operation to reduce EMI noise. all regulators have an individual enable and powergood pin. The NJW4750 offers an option to select from a Hiccup or Latched over-current protection and is AEC-Q100 Grade 1 approved for automotive applications.

Key features

• PMIC with four regulators in one package
• Wide input voltage range
• Various operting mode options
• AEC-Q100 Grade 1

Additional features

• Operating temperature range -40 to 125°C
• Including four regulators:
  • Channel 1: Wide input range 1.2A buck converter.
  • Channel 2: Low voltage 0.6A synchronous buck converter.
  • Channel 3: Selectable regulator: Low voltage 0.6A synchronous buck converter / Low voltage 0.3A LDO
  • Channel 4: Low voltage 0.3A LDO
     
• Wide operating input voltage range: 3.9V (UVLO: 3.35V) to 40V (Ch.1), 2.4V to 5.5V (Ch.2, Ch.3, Ch.4)
• Flexible power-on sequence
• Individual Power-Good Function: (High precision -7%, + 15%)
• Individual standby function
• Protection: UVLO (Under Voltage Lockout), Hiccup or Latch overcurrent protection, Thermal shutdown
• Oscillating frequency 280kHz to 2.4MHz
• External clock synchronization
• Anti-phase operation between Channel 1 and Channel 2 / 3
• Current mode controlled buck converters
• Built-in compensation circuit
• Soft start function
• AEC-Q100 Grade 1

Applications

• Camera module
• Photoelectric sensor
• Small application