REG71050集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF中文资料

REG71050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REG71050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• Wide Input Voltage Range: 1.8 V to 5.5 V

• Automatic Step-Up and Step-Down Operation

• Low Input Current Ripple

• Low Output Voltage Ripple

• Minimum Number of External Components—No

Inductors

• 1-MHz Internal Oscillator Allows Small Capacitors

• Shutdown Mode

• Thermal and Current Limit Protection

• Six Fixed Output Voltages Available:

– 2.5 V, 2.7 V, 3 V, 3.3 V, 5 V, 5.5 V

2 Applications

• White LED Driver

• Smart Card Readers

• SIM Cards

• Handheld devices

• Modems

• PCMCIA Cards

• LCD Displays

• Battery Backup Supplies

3 Description

The REG710 family of devices are switched capacitor

voltage converters that generate regulated, low-ripple output voltage from an unregulated input voltage. A

wide input supply voltage from 1.8 V to 5.5 V makes

the REG710 family of devices ideal for a variety of

battery sources, such as single-cell Li-Ion, or 2-cell

and 3-cell nickel-based or alkaline-based chemistries.

The input voltage may vary above and below the

output voltage and the output remains in regulation. The device works as step-up or step-down converters

without the need of an inductor, providing low EMI

DC-DC conversion. The high switching frequency

allows the use of small surface-mount capacitors, saving board space and reducing cost. The REG710

device is thermally protected and current limited, protecting the load and the regulator during fault

conditions. Typical ground pin current (quiescent

current) is 65 μA with no load, and less than 1 μA in shutdown mode.