High PSRR, Low Dropout, 400mA Adjustable LDO Regulator

RT9043

The RT9043 is a high-performance, 400mA LDO regulator, offering high PSRR and low dropout. The quiescent current is as low as 35μA, further prolonging the battery life. The RT9043 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in handheld wireless devices. The RT9043 consumes typical 0.7μA in shutdown mode. The other features include low dropout voltage, high output accuracy, current limit protection, and enable/shutdown control. The RT9043 is available in the SOT-23-5 package.

Applications

Mega SIM Card
CDMA/GSM Cellular Handsets
Portable Information Appliances
Laptop, Palmtops, Notebook Computers
Hand-Held Instruments
Mini PCI & PCI-Express Cards
PCMCIA & New Cards

Key Spec.

	RT9043
Status	Active
Vin (min) (V)	2.2
Vin (max) (V)	5.5
Vout (min) (V)	1.2
Vout (max) (V)	5
Output Adj. Method	Resistor
Accuracy (+/- %)	1
Iout (max) (mA)	400
Iq (typ) (uA)	35
Vdropout @ rated current (typ) (mV)	230 @ 0.4A
Cout Type	Ceramic
Features	Enable Input;Extra Low Noise;Fast Transient Response;High PSRR;Low Dropout;OCP;Output Discharge;Stable with Ceramic Capacitor
Package Type	SOT-25