ADP120 100 mA, Low Quiescent Current, CMOS Linear Regulator

The ADP120 is a low quiescent current, low dropout, linear regulator that operates from 2.3 V to 5.5 V and provides up to 100 mA of output current. The low 60 mV dropout voltage at 100 mA load improves efficiency and allows operation over a wide input voltage range. The low 22 μA of quiescent current at full load makes the ADP120 ideal for battery-operated portable equipment.

The ADP120 is available in output voltages ranging from 1.2 V to 3.3 V. The part is optimized for stable operation with small 1 μF ceramic output capacitors. The ADP120 delivers good transient performance with minimal board area. Short-circuit protection and thermal overload protection circuits prevent damage in adverse conditions. The ADP120 is available in a tiny 5-lead TSOT and a 4-ball 0.4 mm pitch WLCSP and utilizes the smallest footprint solution for use in a variety of portable applications.

Features and Benefits

Input voltage range: 2.3 V to 5.5 V
Output voltage range: 1.2 V to 3.3 V
Output current: 100 mA
Low quiescent current
I_GND = 11 μA with zero load
I_GND = 22 μA with 100 mA load
Low shutdown current: <1 μA
Low dropout voltage
60 mV @ 100 mA load

High PSRR
73 dB @ 1 kHz at V_OUT= 1.2 V
70 dB @ 10 kHz at V_OUT= 1.2 V
Low noise: 40 μV rms at VOUT = 1.2 V
No noise bypass capacitor required
Initial accuracy: ±1%
Stable with small 1 μF ceramic output capacitor

Power Management

Linear Regulators

Building Technology

Building Control and Automation
Heating Ventilation and Air Conditioning

Design Tools

ADI Linear Regulator Design Tool and Parametric Search .

Reference Designs

CN0214 Design & Integration Files .ZIP

Data Sheets

Document	note
ADP120: 100mA, Low Quiescent Current, CMOS Linear Regulator Data Sheet (Rev. B)	PDF 529 kB

Application Notes

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

Frequently Asked Questions

Document	note

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 1000+	RoHS
ADP121-ACBZ12R7 Production	4 ball WLCSP (.82x.82mm)	REEL 3000	-40 to 125C	0.31	Y
ADP121-ACBZ15R7 Production	4 ball WLCSP (.82x.82mm)	REEL 3000	-40 to 125C	0.31	Y
ADP121-ACBZ165R7 Production	4 ball WLCSP (.82x.82mm)	REEL 3000	-40 to 125C	0.31	Y
ADP121-ACBZ188R7 Last Time Buy	4 ball WLCSP (.82x.82mm)	REEL 3000	-40 to 125C	0.31	Y
ADP121-ACBZ18R7 Production	4 ball WLCSP (.82x.82mm)	REEL 3000	-40 to 125C	0.31	Y
ADP121-ACBZ20R7 Production	4 ball WLCSP (.82x.82mm)	REEL 3000	-40 to 125C	0.31	Y
ADP121-ACBZ25R7 Production	4 ball WLCSP (.82x.82mm)	REEL 3000	-40 to 125C	0.31	Y
ADP121-ACBZ28R7 Production	4 ball WLCSP (.82x.82mm)	REEL 3000	-40 to 125C	0.31	Y
ADP121-ACBZ30R7 Production	4 ball WLCSP (.82x.82mm)	REEL 3000	-40 to 125C	0.31	Y
ADP121-ACBZ33R7 Production	4 ball WLCSP (.82x.82mm)	REEL 3000	-40 to 125C	0.31	Y
ADP121-AUJZ12R7 Production	5 ld TSOT	REEL 3000	-40 to 125C	0.27	Y
ADP121-AUJZ15R7 Production	5 ld TSOT	REEL 3000	-40 to 125C	0.27	Y
ADP121-AUJZ18R7 Production	5 ld TSOT	REEL 3000	-40 to 125C	0.27	Y
ADP121-AUJZ20R7 Last Time Buy	5 ld TSOT	REEL 3000	-40 to 125C	0.27	Y
ADP121-AUJZ25R7 Production	5 ld TSOT	REEL 3000	-40 to 125C	0.27	Y
ADP121-AUJZ28R7 Production	5 ld TSOT	REEL 3000	-40 to 125C	0.27	Y
ADP121-AUJZ30R7 Production	5 ld TSOT	REEL 3000	-40 to 125C	0.27	Y
ADP121-AUJZ33R7 Production	5 ld TSOT	REEL 3000	-40 to 125C	0.27	Y

Evaluation Boards

Part Number	Description	Price	RoHS
ADP121CB-1.2-EVALZ	Evaluation Board	60	Y
ADP121CB-1.5-EVALZ	Evaluation Board	60	Y
ADP121CB-1.8-EVALZ	Evaluation Board	60	Y
ADP121CB-2.0-EVALZ	Evaluation Board	60	Y
ADP121CB-2.5-EVALZ	Evaluation Board	60	Y
ADP121CB-2.8-EVALZ	Evaluation Board	60	Y
ADP121CB-3.0-EVALZ	Evaluation Board	60	Y
ADP121CB-3.3-EVALZ	Evaluation Board	60	Y
ADP121UJZ-REDYKIT	Evaluation Board	45	Y
ADZS-SC584-EZBRD	Evaluation Board	435	Y
ADZS-SC584-EZLITE	EZ-BRD with ICE-1000 and 2x 180 Day CCES License	495	Y
ADZS-SC589-EZBRD	Evaluation Board	435	Y
ADZS-SC589-EZLITE	EZ-BRD with ICE-1000 and 2x 180 Day CCES License	495	Y