OM7642SM OM7643SM OM7644SM SURFACE MOUNT NEGATIVE VOLTAGE REGULATOR, 3-TERMINAL, FIXED VOLTAGE Isolated Hermetic Surface Mount Package 1.5 Amp, -5V, -12V, -15V Negative Voltage Regulators FEATURES • • • • • • • Small Hermetic Surface Mount Package Chip Isolated From Package Output Voltages: -5V, -12V, -15V Output Voltages Set Internally To ±1% Built-In Thermal Overload Protection Short Circuit Current Limiting Product Is Available Hi-Rel Screened DESCRIPTION These three terminal negative regulators are 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 amps of output current. These units feature internally trimmed output voltages to ±1% of nominal output voltage. Standard voltages are -5V, -12V, and -15V. These units are ideally suited for Military applications where a hermetically sealed surface mount package is required. ABSOLUTE MAXIMUM RATINGS Input to Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -35V 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2°C/W θJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°C/W Lead Temperature at Case (5 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225°C 4 11 R1 Supersedes 1 05 R0 3.5 - 139 3.5 OM7642SM - OM7644SM ELECTRICAL CHARACTERISTICS -5 Volt VIN = -10V, Io = 500mA, -55°C ≤ TA ≤ 125°C (unless otherwise specified) Parameter Symbol Test Conditions Min. Max. Output Voltage VOUT TA = 25°C -4.95 -5.05 V -4.85 -5.15 V 12 mV 25 mV VIN = -7.5V to -20V Line Regulation VRLINE • VIN = -7.5V to -20V • (Note 1) VIN = -8.0V to -12V Load Regulation VRLOAD 5 mV • 12 mV 20 mV • 25 mV 15 mV IO = 5mA to 1.5 Amp (Note 1) IO = 250mA to 750 mA • Standby Current Drain ISCD Standby Current Drain ∆ISCD Change With Line (Line) Standby Current Drain ∆ISCD Change With Load (Load) 30 mV 2.5 mA • • 3.0 mA VIN = -7.0V to -20V 0.4 mA IO = 5mA to 1000mA • 0.4 mA • Dropout Voltage VDO ∆VOUT = 100mV, IO = 1.0A Peak Output Current IO (pk) TA = 25°C Short Circuit Current IDS VIN = -35V 1.5 • (Note 2) 2.5 V 3.3 A 1.2 A 2.8 A ∆VIN f =120 Hz, ∆VIN = -10V ∆VOUT (Note 3) NO TA = 25°C, f =10 Hz to 100KHz 40 Long Term Stability ∆VOUT TA = 25°C, t = 1000 hrs. 75 (Note 3) ∆t Ripple Rejection Output Noise Voltage 63 • dB 60 dB (Note 3) µV/V RMS ELECTRICAL CHARACTERISTICS -12 Volt mV VIN = -19V, Io = 500mA, -55°C ≤ TA ≤ 125°C (unless otherwise specified) Parameter Symbol Test Conditions Min. Max. Output Voltage VOUT TA = 25°C -11.88 -12.12 V -11.64 -12.36 V 20 mV VIN = -14.5V to -27V Line Regulation VRLINE • VIN = -14.5V to -27V • (Note 1) VIN = -16V to -22V • Load Regulation VRLOAD IO = 5mA to 1.5 Amp • (Note 1) IO = 250mA to 750 mA • Standby Current Drain ISCD Standby Current Drain ∆ISCD Change With Line (Line) Standby Current Drain ∆ISCD Change With Load (Load) 50 mV 10 mV 30 mV 32 mV 60 mV 16 mV 30 mV 3.5 mA • • 4.0 mA 0.8 mA IO = 5mA to 1000mA • 0.5 mA • Dropout Voltage VDO ∆VOUT = 100mV, IO = 1.0A Peak Output Current IO (pk) TA = 25°C, IO = 5mA to 1A Short Circuit Current IDS VIN = -35V 1.5 • 1.8 V 3.3 A 1.2 A 2.8 A ∆VIN f =120 Hz, ∆VIN = -10V ∆VOUT (Note 3) NO TA = 25°C, f =10 Hz to 100KHz 40 Long Term Stability ∆VOUT TA = 25°C, t = 1000 hrs. 120 (Note 3) ∆t Ripple Rejection Output Noise Voltage Unit VIN = -14.5V to -27V (Note 2) 3.5 Unit 56 • dB 53 dB (Note 3) µV/V RMS mV 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. Short Circuit protection is only assured up to VIN = -35V. 3. If not tested, shall be guaranteed to the specified limits. The • denotes the specifications which apply over the full operating temperature range. 3.5 - 140 OM7642SM - OM7644SM ELECTRICAL CHARACTERISTICS -15 Volt VIN = -23V, Io = 500mA, -55°C ≤ TA ≤ 125°C (unless otherwise specified) Parameter Symbol Test Conditions Min. Max. Unit Output Voltage VOUT TA = 25°C -14.85 -15.15 V -14.55 -15.45 V 25 mV • VIN = -17.5V to -30V Line Regulation VRLINE VIN = -17.5V to -30V • (Note 1) VIN = -20V to -26V • Load Regulation VRLOAD IO = 5mA to 1.5 Amp • (Note 1) IO = 250mA to 750 mA • Standby Current Drain ISCD Standby Current Drain ∆ISCD Change With Line (Line) Standby Current Drain ∆ISCD Change With Load (Load) 50 mV 15 mV 25 mV 35 mV 75 mV 21 mV 45 mV 6.0 mA 6.5 mA VIN = -17.5V to -30V • • 0.8 mA IO = 5mA to 1000mA • 0.5 mA • 2.5 V 3.3 A Dropout Voltage VDO ∆VOUT = 100mV, IO = 1.0A Peak Output Current IO (pk) TA = 25°C Short Circuit Current IDS VIN = -35V 1.5 • (Note 2) 1.2 A 2.8 A ∆VIN f =120 Hz, ∆VIN = -10V ∆VOUT (Note 3) NO TA = 25°C, f =10 Hz to 100KHz 40 Long Term Stability ∆VOUT TA = 25°C, t = 1000 hrs. 150 (Note 3) ∆t Ripple Rejection Output Noise Voltage 53 • dB 50 dB µV/V (Note 3) RMS mV 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. Short Circuit protection is only assured up to VIN = -35V. 3. If not tested, shall be guaranteed to the specified limits. The • denotes the specifications which apply over the full operating temperature range. TYPICAL PERFORMANCE CHARACTERISTICS DROPOUT VOLTAGE 2.5 Tj = -55°C 3 Output Current (A) Input To Output Differential (V) 3.5 2.5 2 Tj = 25°C 1.5 Tj = 150°C 1 0.5 ∆VOUT = 100mV RIPPLE REJECTION 100 IOUT = 1A 2 IOUT = 500mA 1.5 1 IOUT = 0A 0.5 ∆VOUT = 100MV Ripple Rejection (dB) PEAK OUTPUT CURRENT VOUT = 5V 80 60 3.5 40 VIN - V = 8VDC +3.5Vrms IOUT = 1A Tj = 25°C 20 0 0 0 0 5 10 15 20 25 30 Input To Output Differential (V) 35 -75-50 -25 0 2 5 5 0 7 5 100 125150 Junction Temperature (°C) 3.5 - 141 10 100 1k 10k Frequency (Hz) OM7642SM - OM7644SM TYPICAL PERFORMANCE CHARACTERISTICS Input bypass capacitors are recommended for stable operation of the OM7642SM series of regulators over the input voltage and output current ranges. Output bypass capacitors will improve the transient response of the regulator. The bypass capacitors, (2.2µF on the input, 1µF on the output) should be ceramic or solid tantalum which have good high frequency characteristics. If aluminum electrolytics are used, their values should be 10µF or larger. The bypass capacitors should be mounted with the shortest leads and, if possible, directly across the regulator terminals. FIXED OUTPUT REGULATOR 3 VIN 2 BASIC CURRENT REGULATOR VOUT 3 OM7642SM 1 2.2 µF 2 OM7642SM VIN 1 1 µF* R1* 2.2 µF IQ VOUT IOUT = VOUT + IQ RI _________________ MECHANICAL OUTLINE PIN CONNECTION .425J 2 1 J 3 .100J .425J J .200J .035 WIDEJ FLAT 3 PLCS.J 3.5 J .350 MIN.J J Pin 1: Pin 2: Pin 3: Case: ± .020J .115J .160J .020J .080 J VIN Adjust VOUT Isolated