采用 SOT-23 封装的 28V、400mA 开关升压转换器，适用于 LCD 和白光 LED 应用。
TPS61040 的特性
1.8-V to 6-V Input Voltage Range
Adjustable Output Voltage Range up to 28 V
400-mA (TPS61040) and_250-mA (TPS61041) Internal Switch Current
Up to 1-MHz Switching Frequency
28-μA Typical No-Load Quiescent Current
1-μA Typical Shutdown Current
Internal Soft Start
Available in SOT23-5， TSOT23-5，
and_2-mm × 2-mm × 0.8-mm WSON Packages
TPS61040 的说明
The TPS6104x is a high-frequency boost converter dedicated for small to medium LCD biassupply and_white LED backlight supplies. The device is ideal to generate output voltages up to 28 Vfrom a dual-cell NiMH/NiCd or a single-cell Li-Ion battery. The part can also be used to generatestandard 3.3-V or 5-V to 12-V power conversions.
The TPS6104x operates with a switching frequency up to 1 MHz. This frequency allows theuse of small external components using ceramic as well as tantalum output capacitors. Together withthe thin WSON package， the TPS6104x gives a very small overall solution size. The TPS61040 devicehas an internal 400-mA switch current limit， while the TPS61041 device has a 250-mA switch currentlimit， offering lower output voltage ripple and_allows the use of a smaller form factor inductorfor lower power applications. The low quiescent current (typically 28 μA) together with anoptimized control scheme， allows device operation at very high efficiencies over the entire loadcurrent range.
