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A8233SLM Datasheet(PDF) 1 Page - Allegro MicroSystems |
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A8233SLM Datasheet(HTML) 1 Page - Allegro MicroSystems |
1 / 8 page DISCONTINUED PRODUCT — FOR REFERENCE ONLY Designed specifically to meet the requirement for extended opera- tion of battery-powered equipment such as cordless and cellular tele- phones, the A8226SLM thru A8233SLM voltage regulators offer the reduced dropout voltage and quiescent current essential for maximum battery life. Applicable also to palmtop computers and personal data assistants, these devices deliver a regulated output at up to 100 mA (transient), which is limited only by package power dissipation. Regu- lated output voltages of 2.6, 2.7, 2.8, 2.9, 3.0 and 3.3 are currently provided. Other voltages, down to 2.0 volts, are available on special order. A PMOS pass element provides a typical dropout voltage of only 125 mV at 50 mA of load current. The low dropout voltage permits deeper battery discharge before output regulation is lost. Quiescent current does not increase significantly as the dropout voltage is ap- proached, an ideal feature in standby/resume power systems where data integrity is crucial. Regulator accuracy and excellent temperature characteristics are provided by a bandgap reference. The A8226SLM thru A8233SLM include ENABLE inputs to give the designer complete control over power up, standby, or power down. These devices are supplied in a thermally enhanced 5-lead small- outline plastic package similar to the SOT-23, and fitting the SC-74A footprint. All devices are rated for operation over a temperature range of -20 °C to +85°C. FEATURES AND BENEFITS I High Efficiency Provides Extended Battery Life I 125 mV Typical Dropout Voltage at I O = 50 mA I 32 µA Typical Quiescent Current Less Than 1 µA “Sleep” Current I Low Output Noise I 100 mA Peak Output Current I Improved PSRR and Transient Performance APPLICATIONS I Cordless and Cellular Telephones I Personal Data Assistants I Personal Communicators I Palmtop Computers LOW-DROPOUT REGULATORS — HIGH EFFICIENCY 8226 THRU 8233 PRELIMINARY INFORMATION (subject to change without notice) January 18, 2000 A82xxSLM Always order by complete part number, e.g., A82xxSLM , where “xx” is the required output voltage in tenths. ABSOLUTE MAXIMUM RATINGS Input Voltage, V I . . . . . . . . . . . . . . . 7 V Peak Output Current, I OM . . . . . . . . . . . . . . . . . . 100 mA* Enable Input Voltage, V E . . . . . . . . . . V I Operating Temperature Range, T A . . . . . . . . . . . . . -20 °C to +85°C Junction Temperature, T J . . . . +150 °C Storage Temperature Range, T S . . . . . . . . . . . . -40 °C to +150°C * Output current rating is limited by input voltage, duty cycle, and ambient temperature. Under any set of conditions, do not exceed a junction temperature of +150 °C. See follow- ing pages. Dwg. PS-021-3 VR 2 3 1 5 4 |
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