The ADP1720 is a high voltage, micropower, low dropout linear regulator. Operating over a very wide input voltage range of 4 V to 28 V, the ADP1720 can provide up to 50 mA of output current. With just 28 μA of quiescent supply current and a micropower shutdown mode, this device is ideal for applications that require low quiescent current.

The ADP1720 is available in fixed output voltages of 3.3 V and 5.0 V. An adjustable version is also available, which allows the output to be set anywhere between 1.225 V and 5.0 V. An enable function that allows external circuits to turn on and turn off the ADP1720 output is available. For automatic startup, the enable (EN) pin can be connected directly to the input rail.

The ADP1720 is optimized for stable operation with small 1 μF ceramic output capacitors, allowing for good transient performance while occupying minimal board space.

The ADP1720 operates from –40°C to +125°C and uses current limit protection and thermal overload protection circuits to prevent damage to the device in adverse conditions.

Available in a small thermally enhanced MSOP package, the ADP1720 provides a compact solution with low thermal resistance.

Applications

DC-to-DC post regulation

PCMCIA regulation

Keep-alive power in portable equipment

Industrial applications

Data Sheet, Rev. A, 7/07

Part#	Vout Preset	Vout Adj Range	Iout (max)	Vin Range (Vmin to Vmax)	Supply Current (max)	Vdropout @ Rated Iout	Vout Setpoint Acc	Vout Total Acc	Shutdown	Product Description	Pos Supply	Operating Temp Range	Price* (1000-4999)
ADP1707	16 Presets From 0.75-3.3V, With Tracking	n/a	1A	2.5 to 5.5	1.55mA	600mV to 630mV	1% @ Iout = 10mA	1.5% @ 0.1 mA - Iout max	Yes	1 A, Low Dropout, CMOS Linear Regulator	+2.5 to +5.5	-40 to +125	$1.11
ADP1708	n/a	0.8V to 5.0V	1A	2.5 to 5.5	1.55mA	600mV to 630mV	n/a	1.5% @ 0.1 mA - Iout max	Yes	1 A, Low Dropout, CMOS Linear Regulator	+2.5 to +5.5	-40 to +125	$1.08
ADP1710	16 Presets From 0.75-3.3V	0.8V to 5.0V	150mA	2.5 to 5.5	1.3mA	100mV to 300mV	1% @ Iout = 1mA	2% @ 0.1 mA - Iout max	Yes	150 mA, Low Dropout, CMOS Linear Regulator	+2.5 to +5.5	-40 to +125	$0.41
ADP1711	16 Presets From 0.75-3.3V	n/a	150mA	2.5 to 5.5	1.3mA	100mV to 300mV	1% @ Iout = 1mA	2% @ 0.1 mA - Iout max	Yes	150 mA, Low Dropout, CMOS, Linear Regulator	+2.5 to +5.5	-40 to +125	$0.44
ADP1712	16 Presets From 0.75-3.3V	0.8V to 5.0V	300mA	2.5 to 5.5	420µA	70mV to 270mV	1% @ Iout = 10mA	2% @ 0.1 mA - Iout max	Yes	300 mA, Low Dropout, CMOS, Linear Regulator w/ fixed or adj output voltage	+2.5 to +5.5	-40 to +125	$0.46
ADP1713	16 Presets From 0.75-3.3V	n/a	300mA	2.5 to 5.5	420µA	70mV to 270mV	1% @ Iout = 10mA	2% @ 0.1 mA - Iout max	Yes	300 mA, Low Dropout, CMOS, Low Noise Linear Regulator	+2.5 to +5.5	-40 to +125	$0.48
ADP1714	16 Presets From 0.75-3.3V	n/a	300mA	2.5 to 5.5	420µA	70mV to 270mV	1% @ Iout = 10mA	2% @ 0.1 mA - Iout max	Yes	300 mA, Low Dropout, CMOS Linear Regulator w/ External-Voltage Tracking Capability	+2.5 to +5.5	-40 to +125	$0.50
ADP1716	16 Presets From 0.75-3.3V	n/a	500mA	2.5 to 5.5	650µA	50mV to 500mV	1% @ Iout = 10mA	2% @ 10 mA - Iout max	Yes	500mA Low-Dropout Linear Regulator with Tracking	+2.5 to +5.5	-40 to +125	$0.96
ADP1715	16 Presets From 0.75-3.3V	0.8V to 5.0V	500mA	2.5 to 5.5	650µA	50mV to 500mV	1% @ Iout = 10mA	2% @ 10 mA - Iout max	Yes	500 mA Low-Dropout CMOS Linear Regulator with Soft Start	+2.5 to +5.5	-40 to +125	$0.82
ADP3367	5.0V	1.3V to 16V	300mA	2.5 to 16.5	14mA	300mV to 500mV	n/a	2% @ 0.1 mA - Iout max	Yes	Fixed +5V or Adj 1.3V-16V, Low-Dropout Linear Voltage Regulator	+2.5 to +16.5	-40 to +85	$1.79
ADP3334	n/a	1.4V to 10V	500mA	2.6 to 11	10mA	200mV to 400mV	n/a	1.8% @ 0.1 mA - Iout max	Yes	Adjustable 1.5V-10V Output, High Accuracy, Low Iq, 500 mA anyCAP­® Low Dropout Regulator	+2.6 to +11	-40 to +85	$0.86
ADP3331	n/a	1.5V to 11.75V	200mA	2.6 to 12	4mA	140mV to 230mV	-	1.4% @ 0.1 mA - Iout max	Yes	Adjustable 1.5V-10V Output, Ultralow Iq, 200 mA, anyCAP® Low Dropout Regulator in SOT-23	+2.6 to +12	-40 to +85	$0.61
ADP3333	8 Presets From 1.5-5V	n/a	300mA	2.6 to 12	5.5mA	140mV to 230mV	n/a	1.8% @ 0.1 mA - Iout max	Yes	High Accuracy Ultralow Iq, 300 mA, anyCAP® Low Dropout Regulator	+2.6 to +12	-25 to +85	$0.82
ADP3335	10 Presets From 1.8-5V	n/a	500mA	2.6 to 12	10mA	200mV to 400mV	n/a	1.8% @ 0.1 mA - Iout max	Yes	High Accuracy, Ultralow Quiescent Current, 500mA, anyCAP® Low Dropout Regulator	+2.6 to +12	-40 to +85	$0.90
ADP3336	n/a	1.5V to 10V	500mA	2.6 to 12	10mA	200mV to 400mV	n/a	1.8% @ 0.1 mA - Iout max	Yes	Small, Adjustable 1.5V-10V Output, 500 mA anyCAP® Low Dropout Regulator	+2.6 to +12	-40 to +85	$0.91
ADP3338	7 Presets From 1.5-5V	n/a	1A	2.7 to 8	30mA	190mV to 400mV	n/a	1.4% @ 0.1 mA - Iout max	No	High Accuracy, Ultralow Quiescent Current, 1A, anyCAP™ Low Dropout Regulator	+2.7 to +8	-40 to +85	$1.09
ADP3339	7 Presets From 1.5-5V	n/a	1.5A	2.8 to 6	40mA	230mV to 480mV	n/a	1.5% @ 0.1 mA - Iout max	No	High-Accuracy, Ultralow Iq, 1.5 A, anyCAP® Low Dropout Regulator	+2.8 to +6	-40 to +85	$1.17
ADP3309	7 Presets From 2.7-3.6V	n/a	100mA	2.8 to 12	2mA	120mV to 240mV	-	2.2% @ 0.1 mA - Iout max	Yes	anyCAP®, 100 mA, Low Dropout Linear Regulator	+2.8 to +12	-20 to +85	$0.53
ADP3330	7 Presets from 2.5-5V	n/a	200mA	2.9 to 12	4mA	140mV to 230mV	n/a	1.4% @ 0.1 mA - Iout max	Yes	High Accuracy, Ultralow I(Q), 200 mA, anyCAP® Low Dropout Regulator in SOT23	+2.9 to +12	-40 to +85	$0.61
ADP3301	5 Presets From 2.7-5V	n/a	100mA	3 to12	0.3mA	100mV to 200mV	-	1.4% @ 0.1 mA - Iout max	Yes	High Accuracy, anyCAP®, 100 mA, Low Dropout Linear Regulator	+3 to +12	-20 to +85	$1.05
ADP3303	5 Presets From 2.7-5V	n/a	200mA	3.2 to 12	0.4mA	180mV to 400mV	-	1.4% @ 0.1 mA - Iout max	Yes	High Accuracy, anyCAP®, 200 mA, Low Dropout Linear Regulator	+3.2 to +12	-20 to +85	$1.10
ADP667	5.0V	1.3V to 16V	250mA	3.5 to 16.5	20mA	150mVto 250mV	n/a	4%	Yes	Fixed +5V or Adj 1.3V-16V Output, Low-Dropout Linear Voltage Regulator	+3.5 to +16.5	-40 to +85	$1.74
ADP1720	3.30V, 5.0V	1.225V to 5.0V	50mA	4.0 to 28	2.115mA	55mV to 480mV	0.5% @ Iout =0.1 mA	2% @ 0.1 mA - Iout max	Yes	50 mA, High-Voltage, Micro-power LDO Linear Regulator in MSOP	+4 to +28	-40 to +125	$0.49
ADP1706	16 Presets From 0.75-3.3V, Soft Start	n/a	1A	2.5 to 5.5	1.55mA	600mV to 630mV	1% @ Iout = 10mA	1.5% @ 0.1 mA - Iout max	Yes	1 A, Low Dropout, CMOS Linear Regulator	+5.5 to +2.5	-40 to +125	$1.08

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

The model number is a specific version of a generic that can be purchased or sampled.

Status indicates the current lifecycle of the product. This can be one of 4 stages:

• Pre-Release: The model has not been released to general production, but samples may be available.
• Production: The model is currently being produced, and generally available for purchase and sampling.
• Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
• Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).

The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

This is the acceptable operating range of the device. The various ranges specified are as follows:

• Commercial: 0 to +70 degrees Celsius
• Military : -55 to +125 degrees Celsius
• Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
• Automotive: -40 to +125 degrees Celsius

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

This is the date Analog Devices, Inc. anticipates that the product will ship from the warehouse. Most orders ship within 48 hours of this date.Once an order has been placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm your delivery date. It is important to note the scheduled dock date on the order entry screen. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. Also, please note the warehouse location for the product ordered. We have warehouses in the United States, Europe and Southeast Asia. Transit times from these sites may vary.

Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.