Analog DevicesADM8829ARTZ-REEL7Pompe de charge

The ADM8828/ADM8829 is a charge-pump voltage inverter which may be used to generate a negative supply from a positive input

Input voltages ranging from +1.5 V to +5.5 V can be inverted into a negative –1.5 V to –5.5 V output supply. This inverting scheme is ideal for generating a negative rail in single power-supply systems. Only two small external capacitors are needed for the charge pump. Output currents up to 25 mA with greater than 99% efficiency are achievable.

The ADM8828 also features a low power shutdown (SHDN) pin. This can be used to disable the device and reduce the quiescent current to 20 nA.

The ADM8828/ADM8829 is available in a 6-lead SOT-23 package.

Key Features and Benefits

• •  Inverts Input Supply Voltage
• •  99% Voltage Conversion Efficiency
• •  25 mA Output Current
• •  Shutdown Function
• •  Requires Only Two Capacitors

Applications

• •  Handheld Instruments
• •  LCD Panels
• •  Cellular Phones
• •  PDAs
• •  Remote Data Acquisition
• •  Op Amp Power Supplies

Block Diagrams and Tables

Featured Products

ADM8829ARTZ-REEL7
ADM8829ARTZ-REEL
ADM8829ART-REEL7
ADM8829ART-REEL

Think of Analog Devices' ADM8829ARTZ-REEL7 charge pump voltage doubler the next time you are in need of different voltage levels between components within the same circuit. With an output that has a voltage of -5.5 to -1.5 V, this is power management at its best. Its output produces a current of 25(Min) mA. Tape and reel packaging will encase this product during shipment, in order to ensure safe delivery and enable quick mounting of components. This inverting charge pump has a minimum operating temperature of -40 °C and a maximum of 85 °C. This device has a minimum operating supply voltage of 1.5 V and a maximum of 5.5 V.