Tiny PMIC makes the most of battery runtime
Keywords:battery? PMIC? power management?
The LTC3586's buck-boost regulator can deliver up to 1A continuously and is ideal for efficiently regulating a 3.3V output over the full Lithium battery voltage range, down to 2.75V. The LTC3586's two buck regulators feature 100 percent duty cycle operation and are capable of delivering output currents of 400mA each, with adjustable output voltages down to 0.8V. The boost regulator is capable of at least 800mA output current and is programmable up to a 5V output. The LTC3586's internal low RDS(ON) switches enable switching buck and buck-boost efficiencies as high as 94 percent, maximizing battery run time. In addition, Burst Mode operation optimizes efficiency at light loads with a quiescent current of only 25?A for the buck-boost regulator and only 35?A for each buck regulator (The LTC3586 features USB-compatible programmable input current limiting to 100mA/500mA/1A, while its Bat-Track adaptive output control enables high efficiency battery charging with minimum power dissipation. To preserve battery energy, the LTC3586 draws only 44?A in suspend mode. The charger is compatible with inputs up to 5.5V (7V absolute maximum transient for added robustness).
The LTC3586 is available from stock in a compact, low-profile (0.75mm) 4mm x 6mm QFN-38 package. Pricing starts at $5.30 each for 1,000-piece quantities.
Related Articles | Editor's Choice |
Visit Asia Webinars to learn about the latest in technology and get practical design tips.