LM2621MM

TEXAS INSTRUMENTS  LM2621MM  直流-直流开关升压稳压器, 可调, 1.2V-14V输入, 1.24V-14V输出, 1A输出, VSSOP-8

The is a high efficiency Step-up DC-DC Switching Regulator for battery-powered and low input voltage systems. It accepts an input voltage between 1.2V and 14V and converts it into a regulated output voltage. The output voltage can be adjusted between 1.24 and 14V. It has an internal 0.17R N-channel MOSFET power switch. Efficiencies up to 90% are achievable using the LM2621. The high switching frequency adjustable up to 2MHz of the regulator allows for tiny surface mount inductors and capacitors. Because of the unique constant-duty-cycle gated oscillator topology very high efficiencies are realized over a wide load range. The supply current is reduced to 80µA because of the BiCMOS process technology. In the shutdown mode, the supply current is less than 2.5µA.

.

Up to 90% regulator efficiency

.

80µA Typical operating current

.

0.17R Internal MOSFET

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