Linear Technology LTC1772
the LTC1772 when the input voltage falls below 2.0V. The LTC1772 provides a ±2.5% output voltage accuracy and consumes only 270µA of quiescent current. For applications where efficiency is a prime consideration, the LTC1772 is configured for Burst Mode operation, which enhances efficiency at low output current.| Part No. | LTC1772 |
|---|---|
| Datasheet | LTC1772 Download |
| Manufacturer |  Linear Technology |
| Description | Constant Frequency Current Mode Step-Down DC/DC Controller |
| Buy | Stock & Price |
FEATURES
● High Efficiency: Up to 94%● High Output Currents Easily Achieved
● Wide VIN Range: 2.5V to 9.8V
● Constant Frequency 550kHz Operation
● Burst Mode® Operation at Light Load
● Low Dropout: 100% Duty Cycle
● Tiny 6-Lead SOT-23 Package
● 0.8V Reference Allows Low Output Voltages
● Current Mode Operation for Excellent Line and Load Transient Response
● Low Quiescent Current: 270µA
● Shutdown Mode Draws Only 8µA Supply Current
● ±2.5% Reference Accuracy U APPLICATIO S
● One or Two Lithium-Ion-Powered
APPLICATIONS
● Cellular Telephones● Wireless Modems
● Portable Computers
● Distributed 3.3V, 2.5V or 1.8V Power Systems
● Scanners DESCRIPTIO The LTC®1772 is a constant frequency current mode stepdown DC/DC controller providing excellent AC and DC load and line regulation. The device incorporates an accurate undervoltage lockout feature that shuts down To further maximize the life of a battery source, the external P-channel MOSFET is turned on continuously in dropout (100%dutycycle).In shutdown, the device draws a mere 8µA.
