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Description
The RH5RI××1B/××2B/××3B Series are VFM (Chopper) Step-up DC/DC converter ICs with ultra low supply current by CMOS process. This series consists of an oscillator, a VFM control circuit, a driver transistor (Lx switch), a reference voltage unit, an error amplifier, resistors for voltage detection, and an Lx switch protection circuit. By using only three external components, that is, an inductor, a diode, and a capacitor, a low ripple and high-efficiency step-up DC/DC converter can be constructed.
Specifications and features
- Product Category: IC Chips
- Ultra Low Input Current: TYP. 4µA (RH5RI301B/303B at no load, with 1.5V input)
- High Output Voltage Accuracy: ±2.5%
- Low Ripple and Low Noise
- Low Start-up Voltage: MAX. 0.9V (when the output current is 1mA)
- High Efficiency: TYP.80%
- Low Temperature-Drift Coefficient of Output Voltage: TYP. ±50 ppm/˚C
- Small Packages: SOT-89 (RH5RI××1B, RH5RI××2B), SOT-89-5 (RH5RI××3B)
Application Scenarios
- Power source for battery-powered equipment
- Power source for cameras, camcorders, VCRs, PDAs, electronic data banks, and hand-held communication equipment
- Power source for appliances which require higher cell voltage than that of batteries used in the appliances
Comparison
Advantages- Ultra low input current
- High efficiency
- Low temperature-drift coefficient of output voltage
- Small packages
Disadvantages- None specific to mention
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Similar parts: 430483 , Click to view
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Datasheet
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Additional Information
- Datasheet: Download RH5RI304B-T1
- Chipdatas Part: CD92-RH5RI304B-T1
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/10/01 11:00 +0800
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