ZRA250 Datasheet | Zetex Semiconductors

DESCRIPTION The ZRA250 uses a bandgap circuit design to achieve a precision micropower voltage reference of 2.5 volts. The device is available in small outline surface mount packages, ideal for applications where space saving is important. The ZRA250 design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZRA250 is remended for operation between 50µA and 5m A and so is ideally suited to low power and battery powered applications. Excellent performance is maintained to an absolute maximum of 25m A, however the rugged design and 20 volt processing allows the reference to withstand transient effects and currents up to 200m A. Superior switching capability allows the device to reach stable operating conditions in only a few microseconds. FEATURES - - - - - - - - - - - - - - - Small outline SOT23, SO8 and TO92 style packages. No stabilising capacitor required Typical TC 30ppm/°C Typical slope resistance 0.4Ω ± 3%, 2%,1% and 0.5% tolerance Industrial temperature range Operating current 50µA to 5m A Transient response, stable in less than 10µs Optional extended current range APPLICATIONS Battery powered and portable equipment. Metering and measurement systems. Instrumentation. Test equipment. Data acquisition systems. Precision power supplies. SCHEMATIC DIAGRAM Note: 3%, 2% and 1% tolerance devices are not remended for new designs. Refer to ZRC250 G nd 4-232 ABSOLUTE MAXIMUM RATING Reverse Current Forward Current Operating Temperature Storage Temperature 25m A 25m A -40 to 85°C -55 to 125°C Power Dissipation (Tamb=25°C) SOT23 330m W E-Line, 3 pin (TO92) 500m W E-Line, 2 pin (TO92) 500m W SO8 625m W ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated) Tamb=25°C SYMBOL PARAMETER CONDITIONS MIN VR Reverse Breakdown Voltage IR=150µA 2.4875 2.475 2.45 2.425 LIMITS TYP 2.5 2.5 2.5 2.5 25 0.05 30 0.4 0.3 MAX 2.5125 2.525 2.55 2.575 50 5 90 2 0.8 0.5 1 2 3 V TOL. % UNITS IMIN IR TC † RS - ZR Minimum...