OM7603SM SURFACE MOUNT NEGATIVE ADJUSTABLE VOLTAGE REGULATOR Three Terminal, Adjustable Voltage, 1.0 Amp Precision Negative Regulator In A Hermetic Surface Mount Package FEATURES • • • • • • • Hermetic Surface Mount Package Adjustable Output Voltage Built-In Thermal Overload Protection Short Circuit Current Limiting Product Is Available Hi-Rel Screened Electrically Similar To Industry Standard Type LM137 Available Hi-Rel Screened DESCRIPTION This three terminal negative regulator is supplied in a hermetically sealed surface mount package. All protective features are designed into the circuit, including thermal shutdown, current limiting and safe-area control. With heat sinking, they can deliver 1.0 amp of output current. This unit features output voltages that can be trimmed using external resistors, from -1.2 volts to -37 volts. ABSOLUTE MAXIMUM RATINGS @ 25°C Power Dissipation (Pd) (Internally Limited). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 W Input - Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65°C to + 150°C Lead Temperature (Soldering 10 Seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280°C Thermal Resistance: Junction-to-Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.5°C/W MECHANICAL OUTLINE .090 MAX. .450 SQ. .02 x 45° .300 4 PLCS. .035 4 PIN 1 PIN 28 1 26 TOP 4 11 R0 .05 X 45° MAX. 3 PLCS. SIDE .009 R. BOTTOM 28 PLCS. 3.5 - 97 .050 24 PLCS. 12 .305 SQ. 18 Pin Connection Pin 1, 15 thru 28: OUT Pin 2, 3, 13, and 14: ADJ Pin 4 thru 12: IN 3.5 OM7603SM ELECTRICAL CHARACTERISTICS -55°C ≤ TA ≤ 125°C, IL = 8mA (unless otherwise specified) Parameter Symbol Test Conditions Reference Voltage VREF VDIFF = 3.0V, TA = 25°C VDIFF = 3.0V Min. Max. Unit • -1.30 -1.20 V • -1.30 -1.20 -12 12 -25 25 VDIFF = 40V, TA = 25°C VDIFF = 40V Line Regulation RLINE (Note 1) Load Regulation RLOAD (Note 1) 3.0 V ≤ VDIFF ≤ 40V, TA = 25°C 3.0 V ≤ VDIFF ≤ 40V • VDIFF = 5.0V, 8mA ≤ IL ≤ 1.0A • -30 30 VDIFF = 12V, 8mA ≤ IL ≤ 1.0A, TA = 25°C -30 30 VDIFF = 40V, 8mA ≤ IL ≤ 200mA, TA = 25°C -30 30 -30 30 -16 16 VDIFF = 40V, 8mA ≤ IL ≤ 100mA Thermal Regulation VRTH • VIN = -14.6V, IL = 1.0A Pd = 20 Watts, t = 20 ms, TA = 25°C Ripple Rejection RN (Note 2) Adjustment Pin Current f = 120 Hz, VOUT = Vref • 66 mV mV dB CAdj = 10 µF IAdj mV VDIFF = 3.0V • 100 VDIFF = 40V • 100 µA Adjustment Pin ∆IAdj (Line) 3.0V ≤ VDIFF ≤ 40V • -10 10 µA Current Change ∆IAdj (Load) VDIFF = 5V, 8mA ≤ IL ≤ 1.0A • -10 10 µA Miminum Load Current ILmin VDIFF = 3.0V, VOUT = -1.4V (forced) • 10 VDIFF = 10V, VOUT = -1.4V (forced) • 10 VDIFF = 40V, VOUT = -1.4V (forced) • Current Limit (Note 2) ICL VDIFF = 40V, TA = 25°C mA 10 0.24 1.2 A Notes: 1. Load and Line Regulation are specified at a constant junction temperature. Pulse testing with low duty cycle is used. Changes in output voltage due to heating effects must be taken into account separately. 2. If not tested, shall be guaranteed to the specified limits. 3. The • denotes the specifications which apply over the full operating temperature range. 3.5