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| 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. . . . . . . . . . . . . . . . . . . . . . . . - 55C to + 150C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55C to + 150C Typical Power/Thermal Characteristics: Rated Power @ 25C TC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.5W TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W Thermal Resistance: JC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2C/W JA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42C/W Lead Temperature at Case (5 sec). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225C 3.5 4 11 R1 Supersedes 1 05 R0 3.5 - 139 OM7642SM - OM7644SM ELECTRICAL CHARACTERISTICS -5 Volt Parameter Output Voltage Symbol VOUT VRLINE VIN = -10V, Io = 500mA, -55C TA 125C (unless otherwise specified) Min. -4.95 Max. -5.05 -5.15 12 Unit V V mV mV mV mV mV mV mV mV mA mA mA Test Conditions TA = 25C VIN = -7.5V to -20V * * -4.85 Line Regulation (Note 1) VIN = -7.5V to -20V VIN = -8.0V to -12V 25 5 * Load Regulation (Note 1) IO = 250mA to 750 mA VRLOAD IO = 5mA to 1.5 Amp 12 20 * * 25 15 30 2.5 Standby Current Drain ISCD ISCD (Line) ISCD (Load) VDO IO (pk) IDS VIN VOUT NO VOUT t VOUT = 100mV, IO = 1.0A TA = 25C VIN = -35V IO = 5mA to 1000mA VIN = -7.0V to -20V Standby Current Drain Change With Line Standby Current Drain Change With Load Dropout Voltage Peak Output Current Short Circuit Current (Note 2) Ripple Rejection * * * * 1.5 3.0 0.4 0.4 mA 2.5 3.3 1.2 V A A A dB dB * f =120 Hz, VIN = -10V (Note 3) TA = 25C, f =10 Hz to 100KHz TA = 25C, t = 1000 hrs. 63 2.8 * 60 40 Output Noise Voltage (Note 3) Long Term Stability (Note 3) V/V RMS 75 mV ELECTRICAL CHARACTERISTICS -12 Volt Parameter Output Voltage Symbol VOUT VRLINE VIN = -19V, Io = 500mA, -55C TA 125C (unless otherwise specified) Min. -11.88 Max. -12.12 -12.36 20 Unit V V mV mV mV mV mV mV mV mV mA mA mA Test Conditions TA = 25C VIN = -14.5V to -27V * * -11.64 Line Regulation (Note 1) VIN = -14.5V to -27V VIN = -16V to -22V 50 10 * Load Regulation (Note 1) IO = 250mA to 750 mA VRLOAD IO = 5mA to 1.5 Amp 30 32 * * 60 16 30 3.5 Standby Current Drain ISCD ISCD (Line) ISCD (Load) VDO IO (pk) IDS VIN VOUT NO VOUT t VOUT = 100mV, IO = 1.0A TA = 25C, IO = 5mA to 1A VIN = -35V IO = 5mA to 1000mA VIN = -14.5V to -27V Standby Current Drain Change With Line Standby Current Drain Change With Load Dropout Voltage Peak Output Current Short Circuit Current (Note 2) Ripple Rejection * * * * 1.5 4.0 0.8 0.5 mA 1.8 3.3 1.2 V A A A dB dB * f =120 Hz, VIN = -10V (Note 3) TA = 25C, f =10 Hz to 100KHz TA = 25C, t = 1000 hrs. 56 2.8 * 53 40 3.5 Output Noise Voltage (Note 3) Long Term Stability (Note 3) V/V RMS 120 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 Parameter Output Voltage Symbol VOUT VRLINE VIN = -23V, Io = 500mA, -55C TA 125C (unless otherwise specified) Min. -14.85 Max. -15.15 -15.45 25 Unit V V mV mV mV mV mV mV mV mV mA mA mA Test Conditions TA = 25C VIN = -17.5V to -30V * * -14.55 Line Regulation (Note 1) VIN = -17.5V to -30V VIN = -20V to -26V 50 15 * Load Regulation (Note 1) IO = 250mA to 750 mA VRLOAD IO = 5mA to 1.5 Amp 25 35 * * 75 21 45 6.0 Standby Current Drain ISCD ISCD (Line) ISCD (Load) VDO IO (pk) IDS VIN VOUT NO VOUT t VOUT = 100mV, IO = 1.0A TA = 25C VIN = -35V IO = 5mA to 1000mA VIN = -17.5V to -30V Standby Current Drain Change With Line Standby Current Drain Change With Load Dropout Voltage Peak Output Current Short Circuit Current (Note 2) Ripple Rejection * * * * 1.5 6.5 0.8 0.5 mA 2.5 3.3 1.2 V A A A dB dB * f =120 Hz, VIN = -10V (Note 3) TA = 25C, f =10 Hz to 100KHz TA = 25C, t = 1000 hrs. 53 2.8 * 50 40 Output Noise Voltage (Note 3) Long Term Stability (Note 3) V/V RMS 150 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 PEAK OUTPUT CURRENT 3.5 3 Tj = -55C DROPOUT VOLTAGE 2.5 100 IOUT = 1A RIPPLE REJECTION Input To Output Differential (V) 2 2.5 2 1.5 1 0.5 VOUT = 100mV Tj = 150C 1.5 IOUT = 500mA Ripple Rejection (dB) 80 VOUT = 5V Output Current (A) 60 Tj = 25C 3.5 40 VIN - V = 8VDC +3.5Vrms IOUT = 1A Tj = 25C 1 IOUT = 0A 0.5 VOUT = 100MV 20 0 0 5 10 15 20 25 30 35 0 0 -75-50 -25 0 2 5 5 0 7 5 100 125150 10 100 1k 10k Input To Output Differential (V) Junction Temperature (C) Frequency (Hz) 3.5 - 141 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, (2.2F on the input, 1F on the output) should be ceramic or solid tantalum which have good high frequency characteristics. If aluminum electrolytics are used, their values should be 10F or larger. The bypass capacitors should be mounted with the shortest leads and, if possible, directly across the regulator terminals. FIXED OUTPUT REGULATOR BASIC CURRENT REGULATOR VIN 3 OM7642SM 2 VOUT VIN 1 F* 2.2 F 3 OM7642SM 1 2 2.2 F 1 R1* IQ VOUT IOUT = VOUT + IQ RI _________________ MECHANICAL OUTLINE .425 PIN CONNECTION 2 1 .100 .200 3 .425 .035 WIDE FLAT 3 PLCS. 3.5 .350 MIN. .020 .115 .160 Pin 1: Pin 2: Pin 3: Case: VIN Adjust VOUT Isolated .020 .080 |
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