ADP320 Triple, 200 mA, Low Noise, High PSRR Voltage Regulator

The ADP320 200 mA triple output LDO combines high PSRR, low noise, low quiescent current, and low dropout voltage in a voltage regulator ideally suited for wireless applications with demanding performance and board space requirements.

The low quiescent current, low dropout voltage, and wide input voltage range of the ADP320 Triple LDO extend the battery life of portable devices. The ADP320 Triple LDO maintains power supply rejection greater than 60 dB for frequencies as high as 100 KHz while operating with a low headroom voltage. The ADP320 Triple LDO offers much lower noise performance than competing LDOs without the need for a noise bypass capacitor.

The ADP320 Triple LDO is available in a miniature 16 lead 3x3mm LFCSP package and is stable with tiny 1 μF ±30% ceramic output capacitors, resulting in the smallest possible board area for a wide variety of portable power needs.

The ADP320 Triple LDO is available in output voltage combinations ranging from 0.8 V to 3.3 V and offer over current and thermal protection to prevent damage in adverse conditions.

Applications

Mobile phones
Digital cameras and audio devices
Portable and battery-powered equipment
Portable medical devices
Post dc-to-dc regulation

Features and Benefits

Bias voltage range (VBIAS): 2.5 V to 5.5 V
LDO input voltage range (VIN1/VIN2, VIN3): 1.8 V to 5.5 V
Three 200 mA low dropout voltage regulators
16 lead 3x3mm LFCSP
Initial accuracy: ±1%
Stable with 1 μF ceramic output capacitors
No noise bypass capacitor required
Three independant logic controlled enables
Over current and thermal protection

High PSRR
76dB PSRR up to 1 kHz
70dB PSRR 10 kHz
60 dB PSRR at 100 kHz
40 dB PSRR at 1 MHz
Low output noise
29 μV rms typical output noise at V_OUT = 1.2 V
55 μV rms typical output noise at V_OUT = 2.8 V
Excellent transient response
See data sheet for additional features

Power Management

Design Tools

ADI Linear Regulator Design Tool and Parametric Search .

Data Sheets

Document	note
ADP320: Triple, 200 mA, Low Noise, High PSRR Voltage Regulator (Rev. B)	PDF 709 kB

Application Notes

Document	note
AN-1072: How to Successfully Apply Low Dropout Regulators	PDF 105 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADP320ACPZ-110-R7 Production	16 ld LFCSP (3x3mm, 1.5mm exposed pad)	REEL 1500	-40 to 125C	0	0.54	Y
ADP320ACPZ331815R7 Production	16 ld LFCSP (3x3mm, 1.5mm exposed pad)	REEL 1500	-40 to 125C	0	0.54	Y