Datasheet ADP1720-EP (Analog Devices)

50 mA, High Voltage, Micropower Linear Regulator Data Sheet ADP1720-EP FEATURES TYPICAL APPLICATION CIRCUITS Wide input voltage range: 4 V to 28 V ADP1720-EP Maximum output current: 50 mA FIXED Low light load current 1 GND GND 8 V 2 IN GND 7 28 µA at 0 µA load IN = 28V 1µF 3 OUT GND 6 35 µA at 100 µA load 4 EN GND 5 Low shutdown current: 0.7 µA VOUT = 5V 1µF
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Low dropout voltage: 275 mV @ 50 mA load
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Initial accuracy: ±0.5%
Figure 1. ADP1720-EP with Fixed Output Voltage, 5.0 V
Accuracy over line, load, and temperature: ±2% Stable with small 1 µF ceramic output capacitor ADP1720-EP Fixed 3.3 V and 5.0 V output voltage options R2 ADJUSTABLE Adjustable output voltage option: 1.225 V to 5.0 V 1 ADJ GND 8 R1 V 2 IN GND 7 Current limit and thermal overload protection IN = 12V 1µF 3 OUT GND 6 Logic controlled enable 4 EN GND 5 V Space-saving MSOP package OUT = 1.225V(1 + R1/R2) 1µF
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ENHANCED PRODUCT FEATURES
09723- Figure 2. ADP1720-EP with Adjustable Output Voltage, 1.225 V to 5.0 V
Enhanced processing (EP) for −55°C to +125°C operation APPLICATIONS DC-to-dc post regulation PCMCIA regulation Keep-alive power in portable equipment Industrial applications Aeronautic and military operating temperature environment GENERAL DESCRIPTION
The ADP1720-EP is a high voltage, micropower, low dropout The ADP1720-EP is optimized for stable operation with small linear regulator. Operating over a very wide input voltage range 1 µF ceramic output capacitors, al owing for good transient of 4 V to 28 V, the ADP1720-EP can provide up to 50 mA of performance while occupying minimal board space. output current. With just 28 µA of quiescent supply current and a The ADP1720-EP operates from –55°C to +125°C and uses micropower shutdown mode, this device is ideal for applications current limit protection and thermal overload protection that require low quiescent current. circuits to prevent damage to the device in adverse conditions. The ADP1720-EP is available in fixed output voltages of 3.3 V Available in a small MSOP package, the ADP1720-EP provides and 5.0 V. An adjustable version is also available, which allows a compact solution with low thermal resistance. 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 Additional application and technical information can be found off the ADP1720 output is available. For automatic startup, the in the ADP1720 data sheet. enable (EN) pin can be connected directly to the input rail.
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Document Outline Features Enhanced Product Features Applications Typical Application Circuits General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Applications Information Thermal Considerations Outline Dimensions Ordering Guide