2.5A, Ultra-Low Dropout, Ultra-Fast CMOS LDO Regulator

RT9009

The RT9009 is a high performance, 2.5A LDO regulator, offering extremely high PSRR and ultra-low dropout. Ideal for portable RF and wireless applications with demanding performance and space requirements.
Regulator ground current increases only slightly in dropout, further prolonging the battery life. The RT9009 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications that is critical in hand-held wireless devices.
The RT9009 consumes less than 1μA in shutdown mode and has fast turn-on time of less than 400μs. The other features include ultra-low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. The RT9009 is available in the TO-263S-5 package.

Applications

Game Console
CDMA/GSM Cellular Handsets
Battery-Powered Equipment
Laptop, Palmtops, Notebook Computers
Hand-Held Instruments
Mini PCI & PCI-Express Cards
PCMCIA & New Cards
Portable Information Appliances

Key Spec.

	RT9009
Status	EOL
Vin (min) (V)	2.5
Vin (max) (V)	5.5
Vout (min) (V)	1.25
Vout (max) (V)	4.5
Output Adj. Method	Resistor
Accuracy (+/- %)	2
Iout (max) (mA)	2500
Iq (typ) (uA)	380
Vdropout @ rated current (typ) (mV)	520 @ 2A
Cout Type	Ceramic
Features	Enable Input;OCP;Stable with Ceramic Capacitor
Package Type	TO-263S-5

Features

Ultra Fast Response in Line/Load Transient
< 1μA Shutdown Current
Low Dropout : 520mV at 2A
Wide Operating Voltage Ranges : 2.5V to 5.5V
TTL-Logic-Controlled Shutdown Input
Current Limiting Protection
Thermal Shutdown Protection
Low-ESR Ceramic Output Capacitor Required for Stability
High Power Supply Rejection Ratio
RoHS Compliant and 100% Lead (Pb)-Free