LTC1772CS6

The LTC1772CS6 is a kind of constant frequency current mode stepdown DC/DC controller. It provides excellent AC and DC load and line regulation. It is packaged in a small footprint 6-lead SOT-23. It is widely used in one or two lithium-ion-powered applications, cellular telephones, wireless modems, portable computers, distributed 3.3 V, 2.5 V or 1.8 V power systems and scanners.

There are some features of LTC1772CS6. (1) high efficiency: up to 94%; (2) high output currents easily achieved; (3) wide VIN range: 2.5 V to 9.8 V; (4) constant frequency 550 kHz operation; (5) burst modeTM operation at light load; (6) low dropout: 100% duty cycle; (7) 0.8 V reference allows low output voltages; (8) current mode operation for excellent line and load transient response; (9) low quiescent current: 270 mA; (10) shutdown mode draws only 8 mA supply current; (11) ±2.5% reference accuracy.

What comes next is about the absolute maximum ratings of LTC1772CS6. (1): input supply voltage (VIN) is from -0.3 to 10 V; (2): SENSE, PGATE voltages is from -0.3 to VIN+0.3 V; (3): VFB, ITH/RUN voltages is from -0.3 to 2.4 V; (4): PGATE peak output current (<10s) is 1 A; (5): operating temperature range is from 0 to +70; (6): lead temperature (soldering, 10 seconds) is 300; (7): storage ambient temperature range is from -65 to 150; (8): junction temperature is 150.