OM7647SM SURFACE MOUNT NEGATIVE ADJUSTABLE 1.0 AMP VOLTAGE REGULATOR Isolated Hermetic Surface Mount Package 1.0 Amp, High Voltage, Negative Adjustable Voltage Regulator FEATURES • • • • • • • Isolated Hermetic Surface Mount Package Adjustable Output Voltage Eliminates Stocking Fixed Voltages Built-In Thermal Overload Protection Short Circuit Current Limiting Product Is Available Hi-Rel Screened Electrically Similar To Industry Standard Type LM137HV DESCRIPTION This three terminal negative regulator is supplied in a hermetically sealed metal 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 over 1.0 amp of output current. This unit features output voltages that can be trimmed using external resistors, from -1.2 volts to -47 volts. ABSOLUTE MAXIMUM RATINGS @ 25°C Input To Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C Typical Power/Thermal Characteristics: Rated Power: TC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.5W TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W Thermal Resistance: θJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.0°C/W θJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°C/W Max. Lead Solder Temperature for 5 sec . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225°C 3.5 4 11 R0 3.5 - 145 OM7647SM ELECTRICAL CHARACTERISTICS -55°C ≤ TA ≤ 125°C, IL = 8mA (unless otherwise specified) Parameter Symbol Test Conditions Min. Max. Reference Voltage VREF VDIFF = 3.0V, TA = 25°C -1.30 -1.20 VDIFF = 3V • VDIFF = 50V -1.20 -1.20 -1.30 -1.20 -10 10 -25 25 -25 25 -25 25 -45 45 -5 5 V VDIFF = 50V, TA = 25°C Line Regulation -1.30 -1.30 • 3.0 V ≤ VDIFF ≤ 50V, TA = 25°C RLINE (Note 1) mV • Load Regulation VDIFF = 50V, 8mA ≤ IL ≤ 110mA RLOAD (Note 1) TA = 25°C mV VDIFF = 5V, 8mA ≤ IL ≤ 1.5A, TA = 25°C • Thermal Regulation VRTH Unit VIN = -14.6V, IL = 1.5A mV Pd = 20 Watts, t = 10 ms, TA = 25°C Ripple Rejection RN f = 120 Hz, VOUT = Vref • 66 dB CAdj = 10 µF, IOUT = 100 mA (Note 2) Adjustment Pin Current VDIFF = 3.0V • 100 VDIFF = 40V • 100 VDIFF = 50V • 100 VDIFF = 5V, 8mA ≤ IOUT ≤ 1.5A • -5 5 3V ≤ VDIFF ≤ 50V • -6 6 IAdj Adjustment Pin ∆IAdj Current Change Miminum Load Current ILmin Current Limit ICL µA VDIFF = 3.0V, VOUT = -1.4V (forced) • 3.0 VDIFF = 10V, VOUT = -1.4V (forced) • 3.0 VDIFF = 40V, VOUT = -1.4V (forced) • 5.0 VDIFF = 50V, VOUT = -1.4V (forced) • 5.0 mA VDIFF = 50V, TA = 25°C (Note 2) µA 0.2 1.0 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. MECHANICAL OUTLINE .425G G 2 .100G .200G 1 G 3.5 3 G .350 MIN.G G .425G .035 WIDEG FLAT 3 PLCS.G ± .020G .115G .160G .020G .080 G Pin Connections Pin 1: VIN Pin 2: Adjust Pin 3: VOUT Case: Isolated