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Description
The RH5RI502B-T1 is a VFM (Chopper) Step-up DC/DC converter IC designed for low supply current. It is built with a CMOS process and consists of an oscillator, VFM control circuit, driver transistor (Lx switch), reference voltage unit, error amplifier, resistors for voltage detection, and Lx switch protection circuit. With only three external components - an inductor, a diode, and a capacitor - this IC can construct a low ripple, high efficiency step-up DC/DC converter.
Specifications and features
- Small Number of External Components: Only an inductor, a diode, and a capacitor (RH5RI502B-T1)
- 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 (When the output current is 1mA): MAX. 0.9V
- High Efficiency: TYP. 80%
- Low Temperature-Drift Coefficient of Output Voltage: TYP. ±50 ppm/˚C
- Small Packages: SOT-89 (RH5RI502B-T1, RH5RI502B-T2), SOT-89-5 (RH5RI502B-T3)
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- Low input current
- High output voltage accuracy
- Low ripple and low noise
- High efficiency
- Stable output voltage
- Compact size
Disadvantages- Requires external components
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Datasheet
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Shopping guide
Delivery period:
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Additional Information
- Datasheet: Download RH5RI502B-T1
- Chipdatas Part: CD94-RH5RI502B-T1
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/09/28 23:06 +0800
Refund
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- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
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