SA57000-28D Datasheet | Philips Semiconductors

DESCRIPTION The Cap FREE™ SA57000 is the first in a new family of unique low dropout regulators. It needs no external capacitors, offers a low output noise voltage of 30 µVRMS, and an ultra-low dropout voltage of 55 m V @ 50 m A output current. To acmodate high density layouts, it is packaged in the small footprint 5 leaded SOT23-5 (SO5). It is ideal for all portable and cellular phone applications. Additional features include power and thermal shutdown, output current limitation, power OK status, thermal warning, and external logic-controlled on-off via the PWRON pin. FEATURES - Cap FREE: No output capacitor needed, stable for all capacitive loads, regardless of ESR APPLICATIONS - Low 30 µVRMS noise without noise bypass capacitor - Preset output voltages to 2.5 V, 2.8 V, 3.0 V, 3.3 V and 3.6 V; other voltages available upon request. 2% output voltage accuracy - Cordless and mobile phones - Industrial and medical equipment - Other battery-powered equipment. - 150 m A maximum output current with current limitation - Typical dropout voltage 55 m V @ 50 m A output current - 85 µA typical ground current - Thermal-overload and short-circuit protection - PWROK pin: both power status and thermal warning indicator - PWRON pin offers logic-controlled shutdown - Maximum line regulation: 0.1%/V - Maximum load regulation: 0.02%/m A. SIMPLIFIED SYSTEM DIAGRAM SA57000 PWRON 3 PWRON OVER 144 °C (POWER/THERMAL SHUTDOWN) PWRON TEMPERATURE SENSOR OVER 127 °C (POWER/THERMAL WARNING) LOGIC CONTROL 4 PWROK PWRON BAND GAP LOW-PASS FILTER OUTPUT AMP. VOUT 2 PWRON BIAS NETWORK SA00557 Figure 1. Simplified system diagram. Cap FREE is a trademark of Philips Electronics North America Corporation. 2001 Aug 27 853- 2265 26991 Philips Semiconductors Product data Cap FREE™ 150 m A, low-noise, low dropout regulator with thermal protection SA57000-XX...