OM7603NT

OM7603ST ISOLATED HERMETIC TO-257AA ADJUSTABLE VOLTAGE REGULATOR Three Terminal, Adjustable Voltage, 1.5 Amp Precision Negative Regulator In Hermetic JEDEC TO-257AA Package FEATURES • • • • • • • Isolated Hermetic Package, JEDEC TO-257AA Outline Adjustable Output Voltage Eliminates Stocking Fixed Voltages Built-In Thermal Overload Protection Short Circuit Current Limiting Product Is Available Screened To MIL-STD -883 Similar To Industry Standard P/N LM137 DESCRIPTION This three terminal negative regulator is supplied in a hermetically sealed metal package whose outline is similar to the industry standard TO-220 plastic 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 -37 volts. ABSOLUTE MAXIMUM RATINGS @ 25°C Input-Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . -55°C to +150°C Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65° to +150°C Typical Power/Thermal Characteristics: Rated Power @ 25°C TC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.5W TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W Thermal Resistance qJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5°C/W qJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°C/W 3.3 Note: This device is also available in a non-isolated JEDEC TO-257AA package. Use part number OM7603NT for non-isolated unit. 4 11 R4 Supersedes 1 07 R3 3.3 - 137 OM7603ST ELECTRICAL CHARACTERISTICS Parameter Reference Voltage Symbol VREF -55°C TA 125°C, IL = 8mA (unless otherwise specified) Min. -1.262 Max. -1.238 -1.220 -1.220 4.5 13.8 25 25 25 50 5 mV mV mV V Unit Test Conditions VDIFF = 3.0V, TA = 25°C VDIFF = 3.0V VDIFF = 40V • • • • -1.280 -1.280 -4.5 -13.8 -25 -25 -25 Line Regulation (Note 1) Load Regulation (Note 1) RLINE 3.0 V VDIFF 3.0V 40V, TA = 25°C VDIFF 40V RLOAD VDIFF = 5V, 8mA IL 1.5A VDIFF = 12V, 8mA IL 1.5A, TA = 25°C VDIFF 40V, 8mA IL 1.5A, TA = 25°C VDIFF = 40V, 8mA IL 1.5A Thermal Regulation VRTH Vin = -14.6V, IL = 1.5A Pd = 20 Watts, t = 10 ms, TA = 25°C Ripple Rejection (Note 2) Adjustment Pin Current IAdj RN f = 120 Hz, Vout = Vref CAdj = 10 µF, Iout = 100 mA VDIFF = 3.0V VDIFF = 40V Adjustment Pin Current Change ³IAdj (line) ³IAdj (load) Miminum Load Current ILmin VDIFF = 5V, 8mA IL 1.5A VDIFF = 3.0V, Vout = -1.4V (forced) VDIFF = 10V, Vout = -1.4V (forced) VDIFF = 40V, Vout = -1.4V (forced) Current Limit (Note 2) ICL VDIFF 5V 3V VDIFF 40V • -50 -5 • • • • • • • • • 66 dB 100 100 µA -5 5 µA -5 5 3.0 3.0 5.0 µA mA 1.5 0.24 3.5 1.2 A VDIFF = 40V, TA = 25°C 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. 3.3 3.3 - 138 OM7603ST TYPICAL PERFORMANCE APPLICATIONS LOAD REGULATION 0.2 0.2 4 4 0 0 -0.2 -0.2 CURRENT LIMIT TJ = -55°C TJ = -25°C TJ = -150°C 2 ³VO, Output Voltage Change (%) IL = 0.5A IO, Output Current (A) 3 3 -0.4 -0.4 -0.6 -0.6 -0.8 -0.8 -1.0 -1.0 -1.2 -1.2 -1.4 -1.4 -50 -25 -75-50 -25 0 0 25 25 50 50 75 75 100 125 100 125 150 150 IL = 1.5A VI = -15V VO = -10V 1 1 0 0 0 0 10 10 20 20 30 30 40 40 TJ, Junction Temperature (C°) VI - VO, Input - Output Voltage Differential (Vdc) ADJUSTMENT PIN CURRENT 80 80 IAdj, Adjustment Pin Current (µA) 75 75 70 70 65 65 60 60 55 55 50 50 45 45 40 40 -50 -75 -50 -25 -25 0 0 25 25 50 50 75 100 125 150 75 100 125 150 DROPOUT VOLTAGE VI - VO, Input - Output Voltage Differential (Vdc) 3.0 3.0 VO = -5V ³VO = 100mV 2.5 2.5 IL = 500mA IL = 1.5A 2.0 2.0 IL = 200mA 1.5 1.5 IL = 1.0A IL = 20mA 1.0 1.0 -50 -50 -25 -25 0 0 25 25 50 50 75 100 125 150 75 100 125 150 TJ, Junction Temperature (C°) TJ, Junction Temperature (C°) TEMPERATURE STABILITY 1.270 IB, Quiescent Current (mA) MINIMUM OPERATING CURRENT 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 TJ = -55°C TJ = 25°C TJ = 150°C 3.3 Vref, Reference Voltage (V) 1.260 1.250 1.240 1.230 -75 -50 -25 0 25 50 75 100 125 150 0 0 10 20 30 40 VI - VO, Input - Output Voltage Differential (Vdc) TJ, Junction Temperature (C°) 3.3 - 139 OM7603ST TYPICAL APPLICATIONS HIGH STABILITY REGULATOR 7V LM329B + DUAL TRACKING SUPPLY ±1.25V TO ±20V +VI + + R2* 1µF Solid Tantalum OM7602ST VIN VOUT Adj 1µF* R2 5K 1% R4 5k 1% R1** 100 1% R3 5K + 2.2* µF +VOU 1µF Solid Tantalum Adj R3 1.5K 1% R1 1k 1% D1 IN4002 + 10µF + -VIN VIN VOUT OM7603ST *R2 = (VOut) 9.08 x 10-3 -VOUT 10µF - 908 -VIN + - 1µF* Adj VIN VOUT OM7603ST R5** 100 1% + 2.2* µF D2 IN4002 -VOUT * Solid Tantalum ** R1 or R5 may be trimmed slightly to improve tracking. STANDARD APPLICATION * CIN is required if regulator is located more than 4 inches from power supply filter. A 1µF solid tantalum or 10µF aluminum electrolytic is recommended. + IPRO R2 1.0µF R1 120 CO* + 1.0µF ** CO is necessary for stability. A 1µF solid tantalum or 10µF aluminum electrolytic is recommended. VOUT = -1.25V (1 + R2 ) VOUT = -1.25V (1 + R1 CIN* IAd -VIN VI OM7603ST VOU -VOUT MECHANICAL OUTLINE .420 .410 .200 .190 .045 .035 .665 .645 .537 .527 .430 .410 .038 MAX. PIN CONNECTION Tab 3.3 .150 .140 .750 .500 .005 1 2 3 .035 .025 .100 TYP. .120 TYP. NOTES • Case is metal/hermetically sealed • Isolated Tab ISOLATED Front View Pin 1: Adjust Pin 2: Input Pin 3: Output Tab: Isolated NON-ISOLATED Front View Pin 1: Adjust Pin 2: Input Pin 3: Output Tab: Input 205 Crawford Street, Leominster, MA 01453 USA (508) 534-5776 FAX (508) 537-4246