TPS62177DQCT

TEXAS INSTRUMENTS  TPS62177DQCT  同步降压开关稳压器, 固定, 4.75V-28V输入, 3.3V和0.5A输出, WSON-10

The is a high efficiency synchronous Step-down DC/DC Converter, based on the DCS-Control™ topology. With a wide operating input voltage range of 4.75 to 28V, the device is ideally suited for systems powered from multi cell Li-ion as well as 12V and even higher intermediate supply rails, providing up to 500mA output current. The TPS62177DQCT automatically enters power save mode at light loads, to maintain high efficiency across the whole load range. As well, it features a sleep mode to supply applications with advanced power save modes like ultra low power micro controllers. The power good output may be used for power sequencing and/or power on reset. The device features a typical quiescent current of 22µA in normal mode and 4.8µA in sleep mode. In sleep mode, the efficiency at very low load currents can be increased by as much as 20%. In shutdown mode, the shutdown current is less than 2µA and the output is actively discharged.

.

DCS-Control™ topology

.

4.8µA sleep mode Typical quiescent current

.

100% Duty cycle mode

.

Active output discharge

.

Power good output

.

Seamless power save mode transition

.

Under-voltage lockout

.

Short-circuit protection

.

Over-temperature protection

.

Green product and no Sb/Br

Device has limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.