LM2662 - 开关电容器电压转换器

LM2662是TI德州仪器公司的一款电荷泵（无感应器）产品，LM2662是开关电容器电压转换器，本站介绍了LM2662的封装应用图解、特点和优点、功能等，并给出了与LM2662相关的TI元器件型号供参考。

LM2662 - 开关电容器电压转换器 - 电荷泵（无感应器） - DC/DC开关稳压器 - 德州仪器

产品特性

Inverts or Doubles Input Supply Voltage
3.5-Ω Typical Output Resistance
86% Typical Conversion Efficiency at 200 mA
(LM2662) Selectable Oscillator Frequency: 20 kHz/150 kHz
(LM2663) Low Current Shutdown Mode

产品应用

Laptop Computers
Cellular Phones
Medical Instruments
Operational Amplifier Power Supplies
Interface Power Supplies
Handheld Instruments

Voltage Inverter

产品说明

The LM2662/LM2663 CMOS charge-pump voltage converter inverts a positive voltage in the range of 1.5 V to 5.5 V to the corresponding negative voltage. The LM2662/LM2663 uses two low cost capacitors to provide 200 mA of output current without the cost, size, and EMI related to inductor based converters. With an operating current of only 300 μA and operating efficiency greater than 90% at most loads, the LM2662/LM2663 provides ideal performance for battery powered systems. The LM2662/LM2663 may also be used as a positive voltage doubler.

The oscillator frequency can be lowered by adding an external capacitor to the OSC pin. Also, the OSC pin may be used to drive the LM2662/LM2663 with an external clock. For LM2662, a frequency control (FC) pin selects the oscillator frequency of 20 kHz or 150 kHz. For LM2663, an external shutdown (SD) pin replaces the FC pin. The SD pin can be used to disable the device and reduce the quiescent current to 10 μA. The oscillator frequency for LM2663 is 150 kHz.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LM2662	SOIC (8)	4.90 mm x 3.91 mm
LM2663	SOIC (8)	4.90 mm x 3.91 mm

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