TPS61090RSARG4

TEXAS INSTRUMENTS  TPS61090RSARG4  直流-直流开关升压逐步递增稳压器, 可调, 1.8V-5.5V输入, 1.8V-5.5V输出, 2A输出, QFN-16

The is a 96% Efficient Boost Converter that provides a power supply solution for products powered by either a one-cell Li-ion or Li-polymer or a two-cell alkaline, NiCd or NiMH battery and required supply currents up to or higher than 1A. The converter generates a stable output voltage that is either adjusted by an external resistor divider or fixed internally on the chip. It provides high efficient power conversion and is capable of delivering output currents up to 0.5A at 5V at a supply voltage down to 1.8V. The implemented boost converter is based on a fixed frequency, pulse-width-modulation PWM controller using a synchronous rectifier to obtain maximum efficiency. Boost switch and rectifier switch are connected internally to provide the lowest leakage inductance and best EMI behaviour possible. The maximum peak current in the boost switch is limited to a value of 2500mA.

.

96% Efficient synchronous boost converter with 500mA output current from 1.8V input

.

20µA Typical device quiescent current

.

Adjustable output voltage up to 5.5V fixed output voltage options

.

Power save mode for improved efficiency at low output power

.

Low battery comparator

.

Low EMI-converter integrated anti-ringing switch

.

Load disconnect during shutdown

.

Over-temperature protection

.

Green product and no Sb/Br

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.