ZRA125 Datasheet | Zetex Semiconductors

DESCRIPTION The ZRA125 uses a bandgap circuit design to achieve a precision micropower voltage reference of 1.25 volts. The device is available in small outline surface mount packages, ideal for applications where space saving is important. The ZRA125 design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZRA125 is remended for operation between 50␮A and 5m A and so is ideally suited to low power and battery powered applications. Excellent performance is maintained to a suggested 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 - No stabilizing capacitor required - Typical TC 30ppm/°C - Typical slope resistance 0.65⍀ - ± 3% and 2% tolerance - Industrial temperature range - Operating current 50␮A to 5m A - Transient response, stable in less than 10␮s - Small outline SOT23 package APPLICATIONS - Battery powered and portable equipment - Metering and measurement systems - Instrumentation - Data acquisition systems - Precision power supplies SCHEMATIC DIAGRAM - Test equipment ISSUE 3 - MARCH 2004 1 SEMICONDUCTORS ABSOLUTE MAXIMUM RATINGS Reverse current Forward current Operating temperature Storage temperature 25m A 25m A -40 to 85°C -55 to 150°C POWER DISSAPATION (Tamb = 25°C) SOT23 330m W ELECTRICAL CHARACTERISTICS (at Tamb = 25°C unless otherwise stated) SYMBOL PARAMETER VR I MIN IR T C (1) R S (2) ZR Reverse breakdown voltage Minimum operating current Remended operating current Average reverse breakdown voltage temp. co. Slope resistance Reverse dynamic impedance I R = 1m A f = 100Hz I AC = 0.1I R I R = 150 ␮ A f = 100Hz to 10k HZ I R (min) to I R (max) 0.05 30 0.65 0.5 CONDITIONS MIN. I R = 150 ␮ A 1.225 1.21 TYP. 1.25 1.25 30 MAX. 1.275 1.29 50 5 90 2 1 TOL % 2 3 UNITS V V ␮A m A ppm/°C...