-
Description
The RH5RI××1B/××2B/××3B Series are VFM (Chopper) Step-up DC/DC converter ICs with ultra low supply current by CMOS process. The RH5RI××1B IC 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. A low ripple, high efficiency step-up DC/DC converter can be constructed of this RH5RI××1B IC with only three external components, that is, an inductor, a diode and a capacitor.
Specifications and features
- Product Category: IC Chips
- Number of External Components: Only an inductor, a diode and a capacitor (RH5RI××1B)
- Input Current: Ultra Low Input Current TYP. 4µA (RH5RI301B/303B at no load, with 1.5V input)
- Output Voltage Accuracy: High Output Voltage Accuracy ±2.5%
- Start-up Voltage: Low Start-up Voltage (When the output current is 1mA) MAX. 0.9V
- Efficiency: High Efficiency TYP.80%
- Temperature-Drift Coefficient of Output Voltage: The Low Temperature-Drift Coefficient of Output Voltage is TYP. ±50 ppm/˚C
- Packages: 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- The RH5RI series has ultra-low supply current, high efficiency, and high output voltage accuracy.
- It only requires three external components to construct a low ripple, high efficiency step-up DC/DC converter.
- It has a low start-up voltage which is beneficial for power savings.
- The small package size makes it easier to integrate into a wide range of devices, including small handheld electronic appliances.
Disadvantages- The RH5RI series has a high temperature-drift coefficient of output voltage, which may require additional design considerations.
-
Similar parts: 430483 , Click to view
-
Datasheet
-
Shopping guide
Delivery period:
- - Will ship out in 2-3 days
- - DHL Express: 3-7 business days
- - DHL eCommerce: 12-22 business days
- - FedEx International Priority: 3-7 business days
- - EMS: 10-15 business days
Shipping fee:
- - Automatic Email notification (above 5 times)
- - View in your order page
Shipping option:
DHL, FedEx, EMS, SF Express, and Registered Air MailShipping tracking:
- - Automatic Email notification (above 5 times)
- - View in your order page
How to Buy:
- - In-stock, Add to cart > Check out > Submit order > Complete payment >Delivery.
- - Inquiry, Add to inquiry sheet/Submit bom/inquire file/Send email us > Quote > Place order > Complete payment >Delivery.
- View more
Payment:
- - Paypal,Credit Card includes Visa, Master, American Express.
- - Wire transfer, include Local bank transfer.
- - Western Union.
- View more
-
Popular parts of the same kind
Additional Information
- Datasheet: Download RH5RI553B-T1
- Chipdatas Part: CD87-RH5RI553B-T1
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/10/01 10:59 +0800
Refund
-
- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
Related Products
Payment Method
-
The fee is charged according to the rule of PayPal.
-
The fee is charged according to the rule of PayPal.
-
Western Union charge US$0.00 banking fee.
-
We recommend to use bank transfer for large orders to save on handling fees.
Shipping Tips
-
DHL(www.dhl.com)
$40 limited time offer. -
UPS(www.ups.com)
$40 limited time offer. -
FedEx(www.fedex.com)
$40 limited time offer. -
Registered Mail(www.singpost.com)
Free shipping without minimum order.