LM2665 Texas instruments

LM2665

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LM2665

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Описание

The LM2665 CMOS charge-pump voltage converter operates as a voltage doubler for an input voltage in the range of 2.5 V to 5.5 V. Two low-cost capacitors and a diode (needed during start-up) are used in this circuit to provide up to 40 mA of output current. The LM2665 can also work as a voltage divider to split a voltage in the range of 1.8 V to 11 V in half. The LM2665 operates at 160-kHz oscillator frequency to reduce output resistance and voltage ripple. With an operating current of only 650 µA (operating efficiency greater than 90% with most loads) and 1-µA typical shutdown current, the LM2665 provides ideal performance for battery powered systems. For all available packages, see the orderable addendum at the end of the data sheet.

Input Voltage for Voltage Doubler: 2.5 V to 5.5 V
Voltage Divider Splits Voltage: 1.8 V to 11 V
Doubles or Splits Input Supply Voltage
12-Ω Typical Output Impedance
90% Typical Conversion Efficiency at 40 mA
1-µA Typical Shutdown Current

Vin (min) (V)	2.5
Vin (max) (V)	5.8
Vout (min) (V)	1.8
Vout (max) (V)	11
Iout (max) (A)	0.04
Regulated outputs (#)	1
Switching frequency (min) (kHz)	40
Switching frequency (max) (kHz)	80
Iq (typ) (mA)	0.65
Features	Enable
Operating temperature range (°C)	-40 to 85
Rating	Catalog
Type	Charge pump