DatasheetsPDF.com

RP1222 Dataheets PDF



Part Number RP1222
Manufacturers RichPower
Logo RichPower
Description 300mA Adjustable Output Voltage CMOS LDO Regulator
Datasheet RP1222 DatasheetRP1222 Datasheet (PDF)

RP1222 300mA Adjustable Output Voltage CMOS LDO Regulator General Description The RP1222 is designed for portable RF and wireless applicaiton with demanding performance and space requirements. The RP1222 performance is optimized for battery-powered systems to deliver low noise and low quiescent current. Regulator ground current increase only slightly in dropout, further prolonging the battery life. The RP1222 also works with low-ESR ceramic capacitors, reducing the amount of board space necessa.

  RP1222   RP1222


Document
RP1222 300mA Adjustable Output Voltage CMOS LDO Regulator General Description The RP1222 is designed for portable RF and wireless applicaiton with demanding performance and space requirements. The RP1222 performance is optimized for battery-powered systems to deliver low noise and low quiescent current. Regulator ground current increase only slightly in dropout, further prolonging the battery life. The RP1222 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, ciritical in hand-held wireless devices. The RP1222 has soft start time typical 1300µs.The other features include ultra low dropout voltage, current limiting protection, and high ripple rejection ratio. Availabe in the 5-lead of SOT-23 package. Features Adjustable Output Voltage Ultra-Fast Response in Line/Load Transient Long Soft Start Time for Low Inrush Current (Typically 1300µs) < 0.1µA Standby Current When Shutdown Low Dropout : 220mV @ 300mA Wide Operating Voltage Ranges : 2.5V to 5.5V TTL-Logic-Controlled Shutdown Input Low Temperature Coefficient Current Limiting Protection Thermal Shutdown Protection Only 1µF Output Capacitor Required for Stability High Power Supply Rejection Ratio RoHS Compliant and 100% Lead (Pb)-Free Ordering Information RP1222 Package Type B : SOT-23-5 Operating Temperature Range G : Green (Halogen Free with Comme-rcial Standard ) Output Voltage A : High Enable without Discharge B : High Enable with Discharge C : Low Enable without Discharge D : Low Enable with Discharge Applications Power source for battery-powered equipment Power source for cameras, camcorders, VCRs, PDAs, pagers, electronic data banks, and hand-held communication equipment Power source for appliances, which require higher voltage than that of batteries used in the appliances Note : Richpower Green products are : RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. Marking Information For marking information, contact our sales representative directly or through a Richpower distributor located in your area. Pin Configurations (TOP VIEW) ADJ VOUT 54 23 EN/EN GND VIN SOT-23-5 RP1222-02P Feb 2010 1 RP1222 Typical Application Circuit VIN CIN 1µF X7R Chip Enable VIN VOUT VOUT R1 COUT 1µF X7R RP1222 ADJ R2 EN/EN GND Functional Pin Description Pin NO. Pin Name Pin Function 1 EN/EN Chip Enable (Active High/Low). Note that this pin is high impedance.There should be a pull low/high 100kΩ resistor connected to GND/VIN when the control signal is floating. 2 GND Ground. 3 VIN Power Input Voltage. 4 VOUT 5 ADJ Output Voltage. Adjust Output. Function Block Diagram EN Shutdown and Soft Logic Control Start VREF ADJ + MOS Driver - Error Amplifier Current Limit and Thermal Protection RP1222B/D Only VIN VOUT GND 2 RP1222-02P Feb 2010 RP1222 Absolute Maximum Ratings (Note 1) Supply Voltage (VIN) ----------------------------------------------------------------------------------------------- −0.3V to 6V Chip Enable Input Voltage (VEN) --------------------------------------------------------------------------------- −0.3V to 6V Output Voltage (VOUT) --------------------------------------------------------------------------------------------- −0.3V to VOUT +0.3V Adjust Output (VADJ) ----------------------------------------------------------------------------------------------- −0.3V to VOUT +0.3V Power Dissipation, PD @ TA = 25° C SOT-23-5 -------------------------------------------------------------------------------------------------------------- 0.4W Package Thermal Resistance (Note 4) SOT-23-5, θJA ------------------------------------------------------------------------------------------------------- 250°C/W Operating Temperature Range ----------------------------------------------------------------------------------- −40°C to 85°C Storage Temperature Range -------------------------------------------------------------------------------------- −65°C to 150°C Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------ 260°C ESD Susceptibility (Note 2) HBM (Human Body Mode) --------------------------------------------------------------------------------------------- 2kV MM (Machine Mode) ---------------------------------------------------------------------------------------------------- 200V Recommended Operating Conditions (Note 3) Supply Voltage VIN ------------------------------------------------------------------------------------------------------ 2.4V to 5.5V Junction Temperature Range ------------------------------------------------------------------------------------- −40°C to 125°C Electrical Characteristics (VIN = VOUT + 1V, CIN = COUT = 1uF, TA = 25°C, unless otherwise specified) Parameter Input Voltage Range ADJ Reference Voltage Current Limit Quiescent Current Dropout Voltage Line Regulation Load Regulation Standby Current EN .


RP1215 RP1222 RP1228


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)