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R1204K - Step-up DC/DC Converter

General Description

No.

Key Features

  • Input Voltage Range2.3 V to 5.5 V.
  • Supply Current Typ. 800 µA.
  • Standby Current Max. 5 µA.
  • Feedback Voltage 0.2 V ±10 mV (R1204xxxxA/D) 0.4 V ±10 mV (R1204xxxxG/H).
  • V ±15 mV (R1204xxxxB/C/E/F).
  • Lx Current Limit Function Min. 700 mA.
  • Over Voltage Protection 23 V, 33 V, 42 V.
  • Oscillator Frequency Typ. 1.0 MHz (R1204xxxxA/B/C/G) Typ. 750 kHz (R1204xxxxD/E/F/H).
  • Maximum Duty Cycle Min. 91% (R1204xxxxA/B/C/G) Min. 92% (R1204xxxxD/E/F/H).
  • FET ON Resist.

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Datasheet Details

Part number R1204K
Manufacturer Nisshinbo
File Size 1.38 MB
Description Step-up DC/DC Converter
Datasheet download datasheet R1204K Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
R1204x Series Step-up DC/DC Converter with Shutdown Function No. EA-284-230530 OUTLINE The R1204x is a low supply current PWM step-up DC/DC converter. Internally, a single IC consists of an NMOS FET, an oscillator, a PWM comparator, a voltage reference unit, an error amplifier, a current limit circuit, an under voltage lockout circuit (UVLO), an over-voltage protection circuit (OVP), a soft-start circuit, a maximum duty cycle limit circuit, and a thermal shutdown protection circuit. By simply using an inductor, a resistor, capacitors and a diode as external components, a high-efficiency step-up DC/DC converter can be easily configured. As protection functions, the IC contains a thermal shutdown protection circuit, a current limit circuit, an OVP circuit, and an UVLO circuit.