LM2664 Texas instruments

LM2664

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LM2664

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Описание

The LM2664 CMOS charge-pump voltage converter inverts a positive voltage in the range of 1.8 V to 5.5 V to the corresponding negative voltage of −1.8 V to −5.5 V. The device uses two low-cost capacitors to provide up to 40 mA of output current. The LM2664 operates at 160-kHz oscillator frequency to reduce output resistance and voltage ripple. With an operating current of only 220 µA (operating efficiency greater than 91% with most loads) and 1-µA typical shutdown current, the LM2664 provides ideal performance for battery-powered systems.

Inverts Input Supply Voltage
6-Pin SOT-23 Package
12-Ω Typical Output Impedance
91% Typical Conversion Efficiency at 40 mA
1-µA Typical Shutdown Current

Vin (min) (V)	1.8
Vin (max) (V)	5.5
Vout (min) (V)	-5.5
Vout (max) (V)	-1.8
Iout (max) (A)	0.04
Regulated outputs (#)	1
Switching frequency (min) (kHz)	40
Switching frequency (max) (kHz)	80
Iq (typ) (mA)	0.22
Features	Enable
Operating temperature range (°C)	-40 to 85
Rating	Catalog
Type	Charge pump