500mA, Low Dropout, Low Noise Ultra-Fast With Soft Start CMOS LDO Regulator

RT9020

The RT9020 is a high-performance, 500mA LDO regulator, offering extremely high PSRR and ultra-low dropout, ideal for portable RF and wireless applications with demanding performance and space requirements. The RT9020 quiescent current is as low as 25μA, further prolonging the battery life. The RT9020 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices.

The RT9020 consumes typical 0.7μA in shutdown mode and has fast turn-on time less than 70μs (without C_SS). The other features include ultra-low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. Tiny packages SOT-23-5 and SC-70-5 are available.

Applications

Digital Still Camera
CDMA/GSM Cellular Handsets
Portable Information Appliances
Laptop, Palmtops, Notebook Computers
Mini PCI & PCI-Express Cards
PCMCIA & New Cards

Key Spec.

	RT9020
Status	Active
Vin (min) (V)	2.2
Vin (max) (V)	5.5
Vout (min) (V)	1.2
Vout (max) (V)	3.3
Output Adj. Method	Fixed
Accuracy (+/- %)	2
Iout (max) (mA)	500
Iq (typ) (uA)	25
Vdropout @ rated current (typ) (mV)	250 @ 0.5A
Cout Type	Ceramic
Features	Adjustable Soft-Start;Enable Input;OCP;Output Discharge;Stable with Ceramic Capacitor
Package Type	SC-70-5;SOT-25