LM2733YMFX/NOPB集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF中文资料

LM2733YMFX/NOPB属于集成电路（IC）的稳压器-DC-DC开关稳压器。由德州仪器制造生产的LM2733YMFX/NOPB稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。

1 Features

1• 40-V DMOS FET switch

• 1.6-MHz (“X”), 0.6 MHz (“Y”) Switching frequency

• Low RDS(ON) DMOS FET

• Switch current up to 1 A

• Wide input voltage 2.7 V to 14 V

• Low shutdown current (< 1 μA)

• 5-Pin SOT-23 package

• Uses tiny capacitors and inductors

• Cycle-by-cycle current limiting

• Internally compensated

2 Applications

• White LED current source

• PDAs and palm-top computers

• Digital cameras

• Portable phones and games

• Local boost regulator

3 Description

The LM2733 switching regulators are current-mode

boost converters operating fixed frequency of 1.6

MHz (“X” option) and 600 kHz (“Y” option).

The use of SOT-23 package, made possible by the

minimal power loss of the internal 1-A switch and use

of small inductors and capacitors, results in the

industry's highest power density. The 40-V internal

switch makes these solutions perfect for boosting to

voltages of 16 V or greater.

These parts have a logic-level shutdown pin that can

be used to reduce quiescent current and extend

battery life.

Protection is provided through cycle-by-cycle current

limiting and thermal shutdown. Internal compensation

simplifies design and reduces component count.