ADP1707 1 A, Low Dropout, CMOS Linear Regulator with Tracking

The ADP1706/ADP1707/ADP1708 are CMOS, low dropout linear regulators that operate from 2.5 V to 5.5 V and provide up to 1 A of output current. Using an advanced proprietary architecture, they provide high power supply rejection and achieve excellent line and load transient response with a small 4.7 μF ceramic output capacitor.

The ADP1706/ADP1707 are available in 16 fixed output volt-age options. The ADP1708 is available in an adjustable version, which allows output voltages that range from 0.8 V to 5.0 V via an external divider. The ADP1706 allows an external soft start capacitor to be connected to program the start-up time; the ADP1707 and ADP1708 contain internal soft start capacitors that give a typical start-up time of 100 μs. The ADP1707 includes a tracking feature that allows the output to follow an external voltage rail or reference.

The ADP1706/ADP1707/ADP1708 are available in an 8-lead, exposed paddle SOIC package and an 8-lead, 3 mm × 3 mm exposed paddle LFCSP, making them not only very compact solutions but also providing excellent thermal performance for applications requiring up to 1 A of output current in a small, low profile footprint.

Applications

Notebook computers
Memory components
Telecommunications equipment
Network equipment
DSP/FPGA/microprocessor supplies
Instrumentation equipment/data acquisition systems

Features and Benefits

Maximum output current: 1 A
Input voltage range: 2.5 V to 5.5 V
Low shutdown current: <1 μA
Low dropout voltage: 345 mV @ 1 A load
Initial accuracy: ±1%
Accuracy over line, load, and temperature: ±2.5%
16 fixed output voltage options with soft start: 0.75 V to 3.3 V (ADP1706)

16 fixed output voltage options with tracking 0.75 V to 3.3 V (ADP1707)
Adjustable output voltage option: 0.8 V to 5.0 V (ADP1708)
Stable with small 4.7 μF ceramic output capacitor
Excellent load/line transient response
Current limit and thermal overload protection

Power Management

Linear Regulators

Design Tools

ADI Linear Regulator Design Tool and Parametric Search .

Data Sheets

Document	note
ADP1706/ADP1707/ADP1708: 1 A, Low Dropout, CMOS Linear Regulator Data Sheet (Rev. A)	PDF 518.09 K

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
ADP1707ACPZ-1.3-R7 Last Time Buy	8 ld LFCSP (3x3mm 1.74x1.45mm EP)	REEL 1500	-40 to 125C	1.12	Y
ADP1707ACPZ-1.8-R7 Production	8 ld LFCSP (3x3mm)	REEL 1500	-40 to 125C	1.12	Y
ADP1707ACPZ-2.5-R7 Last Time Buy	8 ld LFCSP (3x3mm)	REEL 1500	-40 to 125C	1.12	Y
ADP1707ACPZ-3.0-R7 Last Time Buy	8 ld LFCSP (3x3mm)	REEL 1500	-40 to 125C	1.12	Y
ADP1707ACPZ-3.3-R7 Production	8 ld LFCSP (3x3mm)	REEL 1500	-40 to 125C	1.12	Y
ADP1707ARDZ-1.0-R7 Last Time Buy	8 ld SOIC-EP (2.41mm Exposed pad)	REEL 1000	-40 to 125C	1.12	Y
ADP1707ARDZ-1.1-R7 Last Time Buy	8 ld SOIC-EP (2.41mm Exposed pad)	REEL 1000	-40 to 125C	1.12	Y
ADP1707ARDZ-1.2-R7 Production	8 ld SOIC-EP (2.41mm Exposed pad)	REEL 1000	-40 to 125C	1.12	Y
ADP1707ARDZ-1.3-R7 Last Time Buy	8 ld SOIC-EP (2.41mm Exposed pad)	REEL 1000	-40 to 125C	1.12	Y
ADP1707ARDZ-1.5-R7 Production	8 ld SOIC-EP (2.41mm Exposed pad)	REEL 1000	-40 to 125C	1.12	Y
ADP1707ARDZ-1.8-R7 Production	8 ld SOIC-EP (2.41mm Exposed pad)	REEL 1000	-40 to 125C	1.12	Y
ADP1707ARDZ-2.5-R7 Production	8 ld SOIC-EP (2.41mm Exposed pad)	REEL 1000	-40 to 125C	1.12	Y
ADP1707ARDZ-3.0-R7 Last Time Buy	8 ld SOIC-EP (2.41mm Exposed pad)	REEL 1000	-40 to 125C	1.12	Y
ADP1707ARDZ-3.3-R7 Production	8 ld SOIC-EP (2.41mm Exposed pad)	REEL 1000	-40 to 125C	1.12	Y

Evaluation Boards

Part Number	Description	Price	RoHS
ADP1707-3.3-EVALZ	Evaluation Board	60.72	Y

ADP1706/ADP1707/ADP1708: 1 A, Low Dropout, CMOS Linear Regulator Data Sheet (Rev. A) adp1706

ADI Linear Regulator Design Tool and Parametric Search adp2108

AN-1072: How to Successfully Apply Low Dropout Regulators adp2108

AN-1072: 在系统中成功运用低压差稳压器 (Rev. 0) adp2108