ADM8829ARTZ-REEL7

ADM8829 is a charge-pump voltage inverter which may be used to generate a negative supply from a positive input. Input voltages ranging from +1.5V to +5.5V can be inverted into a negative -1.5V to -5.5V 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 upto 25mA with greater than 99% efficiency are achievable. It also features a low power shutdown (SHDN) pin. This can be used to disable the device and reduce the quiescent current to 20nA. It is used in applications such as handheld instruments, LCD panels, cellular phones, PDAs, remote data acquisition, op-amp power supplies.

• Inverts input supply voltage
• Shutdown function, requires only two capacitors
• 1mF capacitors, output resistance is 18 ohm typical
• Quiescent current is 600mA typical at (VIN = +5V, C1, C2 = 1mF)
• Output current is 25mA min at (VIN = +5V, C1, C2 = 1mF)
• Output ripple is 25mV p-p typical at (IL = 5mA, VIN = +5V, C1, C2 = 1mF)
• Charge-pump frequency is 120KHz typical at (VIN = +5V, C1, C2 = 1mF)
• Shutdown exit time is 175µs typical at (IL = 5mA, VIN = +5V, C1, C2 = 1mF)
• Operating temperature range from -40°C to +85°C
• Package style is 6-lead small outline transistor [SOT-23]

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