LM2760 Datasheet | National Semiconductor

Description The LM2760 is a switched-capacitor DC/DC converter that generates a regulated 3.3V output capable of driving a load up to 20m A (VIN ≥ 2.5V). The wide input voltage range (2.0V-4.4V) allows this device to be powered from several types of batteries, including single cell lithium-ion, two-cell alkaline, nickel-metal-hydride, and nickel-cadmium. The LM2760 solution does not require an inductor and needs only three small external ceramic capacitors. The miniscule quiescent current of the part, typically 10µA unloaded, makes the LM2760 ideal for low-current standby power rails. The LM2760 is a switched-capacitor circuit that is controlled by a gated oscillator. Both a low-input-voltage boost mode and high-input-voltage pass mode are implemented to optimize efficiency over the full input voltage range. Additional features of the LM2760 include thermal protection and current limiting. The LM2760 is available in a small, fivepin SOT-23 package. Features - 3.3V ± 4% Regulated Output - Ultralow Power: 10µA Typical Supply Current - Boost and Pass Modes for Improved Efficiency - Input Voltage Range: 2.0V to 4.4V - Output Current up to 20m A (VIN ≥ 2.5V) - Output Current up to 10m A (VIN ≥ 2.0V) - Inductorless solution - Small external parts count: 3 ceramic capacitors - 750k Hz Switching Frequency - SOT23-5 Package - Short-Circuit and Thermal Protection Applications - Battery-Operated Devices - Cellular Phone - Standby Power Supply - Memory Keep-alive Power Typical Application Circuit © 2011 National Semiconductor Corporation 200443 200443 Version 4 Revision 5 Print Date/Time: 2011/09/23 15:22:06 .national. Connection Diagram LM2760 SOT23-5 Package NS Package Number MF05A Top View Pin Descriptions Pin #(s) 1 2 3 4 5 Pin Name VIN GND VOUT CAP+ CAP- Ordering Information Description Input supply connection Ground connection Regulated 3.3V output Charge pump capacitor (+) connection Charge pump capacitor (-) connnection Order #...