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Description
The RH5RI552B-T1-F is a VFM (Chopper) Step-up DC/DC converter IC from the RH5RI××B series. It is designed using a CMOS process and has an ultra low supply current. This IC includes 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. With only three external components (an inductor, a diode, and a capacitor), this IC can construct a low ripple and high efficiency step-up DC/DC converter.
Specifications and Features
- Small Number of External Components: Only an inductor, a diode, and a capacitor
- Ultra Low Input Current: Typ. 4µA 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 (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 output voltage accuracy
- Low ripple and low noise
- High efficiency
- Low temperature-drift coefficient of output voltage
- Small number of external components
- Small packages
Disadvantages- No specific disadvantages mentioned
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Datasheet
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Shopping guide
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Additional Information
- Datasheet: Download RH5RI552B-T1-F
- Chipdatas Part: CD87-RH5RI552B-T1-F
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/10/01 13:09 +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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