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RT9198T Dataheets PDF



Part Number RT9198T
Manufacturers Richtek Technology
Logo Richtek Technology
Description Thermal Folded Back CMOS LDO Regulator
Datasheet RT9198T DatasheetRT9198T Datasheet (PDF)

RT9198T 300mA, Thermal Folded Back CMOS LDO Regulator General Description Features The RT9198T is designed for portable RF and wireless z Short Circuit Thermal Folded Back Protection applications with demanding performance and space z Low-Noise for RF Application requirements. The RT9198T performance is optimized for z Fast Response in Line/Load Transient battery-powered systems to deliver ultra low noise and z Quick Start-Up (Typically 50us) low quiescent current. Regulator ground curre.

  RT9198T   RT9198T



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RT9198T 300mA, Thermal Folded Back CMOS LDO Regulator General Description Features The RT9198T is designed for portable RF and wireless z Short Circuit Thermal Folded Back Protection applications with demanding performance and space z Low-Noise for RF Application requirements. The RT9198T performance is optimized for z Fast Response in Line/Load Transient battery-powered systems to deliver ultra low noise and z Quick Start-Up (Typically 50us) low quiescent current. Regulator ground current increases z < 0.01uA Standby Current When Shutdown only slightly in dropout, further prolonging the battery life. z Low Dropout : 220mV @ 300mA The RT9198T also works with low-ESR ceramic capacitors, z Wide Operating Voltage Ranges : 2.5V to 5.5V reducing the amount of board space necessary for power z TTL-Logic-Controlled Shutdown Input applications, critical in hand-held wireless devices. The z Low Temperature Coefficient RT9198T consumes less than 0.01uA in shutdown mode z Current Limiting Protection and has fast turn-on time less than 50μs. RT9198T is short circuit thermal folded back protected. RT9198T lowers its z Thermal Shutdown Protection z Only 1uF Output Capacitor Required for Stability OTP trip point from 165°C to 110°C when output short circuit occurs (VOUT < 0.4V) providing maximum safety to end users. The other features include ultra low dropout z High Power Supply Rejection Ratio z Custom Voltage Available z RoHS Compliant and 100% Lead (Pb)-Free voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. Available in the SOT-23-3, SOT-23-5 and SC-70-5 packages, the RT9198T also offers a range of 1.5V to 3.5V with 0.1V per step. Applications z CDMA/GSM Cellular Handsets z Battery-Powered Equipment z Laptop, Palmtops, Notebook Computers Ordering Information RT9198T- z Hand-Held Instruments z PCMCIA Cards Package Type U5 : SC-70-5 U5R : SC-70-5 (R-Type) V : SOT-23-3 B : SOT- 23-5 BR : SOT- 23-5 (R-Type) z Portable Information Appliances Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your Note : Lead Plating System area. P : Pb Free G : Green (Halogen Free and Pb Free) Pin Configurations Output Voltage 15 : 1.5V 16 : 1.6V : 34 : 3.4V 35 : 3.5V 1H : 1.85V (TOP VIEW) VIN 3 2 2H : 2.85V GND VOUT Richtek products are : ` RoHS compliant and compatible with the current require- SOT-23-3 ments of IPC/JEDEC J-STD-020. ` Suitable for use in SnPb or Pb-free soldering processes. DS9198T-04 April 2011 www.richtek.com 1 Downloaded from Elcodis.com electronic components distributor RT9198T VIN VOUT 54 23 EN NC GND SOT-23-5/SC-70-5 Typical Application Circuit VIN CIN 1uF Chip Enable VOUT 5 NC 4 23 VIN GND EN SOT-23-5/SC-70-5 (R-Type) RT9198T VIN VOUT EN GND COUT VOUT 1uF Functional Pin Description Pin Name EN NC GND VOUT VIN Pin Function Chip Enable (Active High). Note that this pin is high impedance..


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