OM7625NM SURFACE MOUNT NEGATIVE ADJUSTABLE VOLTAGE REGULATOR Three Terminal, Adjustable Voltage, 1.0 Amp Precision Negative Regulator In A Hermetic Surface Mount Package FEATURES • • • • • • Surface Mount Hermetic 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 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 over 1.5 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 Input to Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V Operating Junction Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C Typical Power/Thermal Characteristics: Rated Power @ 25°C TC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.5W TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W Thermal Resistance: θJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5°C/W θJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°C/W Lead Temperature at Case (5 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225°C PIN CONNECTION MECHANICAL OUTLINE .015 .500 1 .075 .075 2 .157 .030 MIN. Pin 1: Adjust Pin 2: VOUT 3 .625 .415 Pin 3: VIN .062 TOP VIEW 4 11 R1 Supersedes 1 05 R0 3.5 .140 .140 .140 3.5 - 111 SIDE VIEW .375 BOTTOM VIEW OM7625NM 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 -1.275 -1.225 -1.30 -1.20 -1.275 -1.225 -1.30 -1.20 VDIFF = 3.0V • VDIFF = 40V, TA = 25°C VDIFF = 40V Line Regulation RLINE Load Regulation 3.0 V ≤ VDIFF ≤ 40V, TA = 25°C 3.0 V ≤ VDIFF ≤ 40V (Note 1) RLOAD (Note 1) VDIFF = 5.0V, 8mA ≤ IL ≤ 1.5A VRTH • • -9 9 -23 23 -25 25 VDIFF = 12V, 8mA ≤ IL ≤ 1.5A, TA = 25°C -25 25 VDIFF = 40V, 8mA ≤ IL ≤ 200mA, TA = 25°C -25 25 -25 25 -5 5 VDIFF = 40V, 8mA ≤ IL ≤ 100mA Thermal Regulation • • Vin = -14.6V, IL = 1.5A Unit V mV mV mV Pd = 20 Watts, t = 20 ms, TA = 25°C Ripple Rejection RN (Note 2) Adjustment Pin Current f = 120 Hz, Vout = Vref IAdj VDIFF = 3.0V VDIFF = 40V Adjustment Pin ∆IAdj (Line) 3.0V ≤ VDIFF ≤ 40V Current Change ∆IAdj (Load) VDIFF = 5V, 8mA ≤ IL ≤ 1.5A Miminum Load Current ILmin VDIFF = 3.0V, Vout = -1.4V (forced) VDIFF = 10V, Vout = -1.4V (forced) VDIFF = 40V, Vout = -1.4V (forced) Current Limit (Note 2) • 66 dB CAdj = 10 µF ICL VDIFF ≤ 5V VDIFF = 40V, TA = 25°C • • • • • • • • 100 100 µA -5 5 µA -5 5 µA 3.0 3.0 mA 5.0 1.5 3.5 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