OM7602ST ISOLATED HERMETIC TO-257AA ADJUSTABLE VOLTAGE REGULATOR Three Terminal, Adjustable Voltage, 1.5 Amp Precision Positive 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 OM803 Similar To Industry Standard P/N LM117 DESCRIPTION This three terminal positive 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 Note: This device is also available in a non-isolated JEDEC TO-257AA package. Use part number OM7602NT for non-isolated unit. 4 11 R4 Supersedes 1 07 R3 3.3 - 131 3.3 OM7602ST ELECTRICAL CHARACTERISTICS -55°C TA 125°C, IL = 8mA (unless otherwise specified) Parameter Symbol Test Conditions Reference Voltage VREF VDIFF = 3.0V, TA = 25°C Min. • • VDIFF = 3.3V VDIFF = 40V Line Regulation RLINE 3.0V VDIFF 40V, Vout = Vref, TA = 25°C RLOAD VDIFF = 3.0V, 10mA IL 1.5A, TA = 25°C (Note 1) 3.3V VDIFF 40V, Vout = Vref Load Regulation (Note 1) 1.238 1.262 1.225 1.270 1.225 1.270 -4.5 4.5 • • VDIFF = 3.3V, 10mA IL 1.5A VDIFF = 40V, 10mA IL 300mA, TA = 25°C • VDIFF = 40V, 10mA IL 195mA Thermal Regulation VRTH Max. Vin = 14.6V, IL = 1.5A -9 9 -15 15 -15 15 -15 15 -15 15 -5 5 Unit V mV mV mV Pd = 20 Watts, t = 20 ms, TA = 25°C Ripple Rejection RN (Note 2) • f = 120 Hz, Vout = Vref 66 dB CAdj = 10 µF, Iout = 100 mA Adjustment Pin Current IAdj VDIFF = 3.0V, TA = 25°C 100 • • VDIFF = 3.3V VDIFF = 40V Adjustment Pin ³IAdj Current Change 100 VDIFF = 3.0V, 10mA IL 1.5A, TA = 25°C VDIFF = 3.3V, 10mA IL 1.5A -5 5 • -5 5 -5 5 • -5 5 -5 5 • -5 5 VDIFF = 40V, 10mA IL 300mA, TA = 25°C VDIFF = 40V, 10mA IL 195mA 3.0V VDIFF 40V, TA = 25°C 3.3V VDIFF 40V Miminum Load Current ILmin VDIFF = 3.0V, VOUT = 1.4V (forced) VDIFF = 3.3V, VOUT = 1.4V (forced) VDIFF = 40V, VOUT = 1.4V (forced) Current Limit ICL (Note 2) VDIFF = 15V µA 100 µA 5.0 • • • VDIFF = 40V, TA = 25°C 5.0 mA 5.0 1.5 3.5 0.18 1.5 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. 3.3 STANDARD APPLICATION * CIN is required if regulator is located an appreciable distance from power supply filter. ** CO is not needed for stability, however it does improve transient response. VOUT = 1.25V (1 + R1 R2 ) + IAdj R2 VIN OM7602ST IAdj CIN* 0.1µF Since IAdj is controlled to less than 100µA, the error associated with this term is negligible in most applications. 3.3 - 132 VOUT R1 240 Adjust R2 +C OUT** 1.0µF OM7602ST TYPICAL PERFORMANCE CHARACTERISTICS CURRENT LIMIT 4 0.4 0.2 IL = 0.5A 0 -0.2 IL = 1.5A -0.4 -0.6 VI = 15V VO = 10V IO, OUTPUT CURRENT (A) ∆VO, OUTPUT VOLTAGE CHANGE (%) LOAD REGULATION 3 TJ = 25°C 2 TJ = 150°C 1 -0.8 -1.0 -75 0 -50 -25 0 25 50 75 100 125 150 TJ, JUNCTION TEMPERATURE (°C) 30 10 20 40 0 VI - VO, INPUT - OUTPUT VOLTAGE DIFFERENTIAL (Vdc ) DROPOUT VOLTAGE 3.0 70 65 60 55 50 45 40 35 -75 -50 1.240 1.230 IL = 1.5A IL = 1.0A 2.0 IL = 500mA 1.5 IL = 200mA IL = 20mA 5.0 IB, QUIESCENT CURRENT (mA) 1.250 2.5 1.0 -75 -25 0 25 50 75 100 125 150 TJ, JUNCTION TEMPERATURE (°C) TEMPERATURE STABILITY 1.260 1.220 -75 VO = 100mV DIFFERENTIAL (Vdc) VI - VO, INPUT-OUTPUT VOLTAGE IAdj, ADJUSTMENT PIN CURRENT (µA) ADJUSTMENT PIN CURRENT Vref, REFERENCE VOLTAGE (V) TJ = -55°C 4.5 4.0 3.5 3.0 2.5 -50 50 75 100 125 150 -25 0 25 TJ, JUNCTION TEMPERATURE (°C) MINIMUM OPERATING CURRENT TJ = -55°C TJ = 25°C TJ = 150°C 2.0 1.5 1.0 0.5 0 -50 30 40 0 10 20 VI - VO, INPUT - OUTPUT VOLTAGE DIFFERENTIAL (Vdc) 50 75 100 125 150 -25 0 25 TJ, JUNCTION TEMPERATURE (°C) 3.3 - 133 3.3 OM7602ST TYPICAL APPLICATIONS ADJUSTABLE CURRENT LIMITER VOUT R1 +25V 5V ELECTRONIC SHUT DOWN REGULATOR D1 IO VO 1N4002 OM7602ST VIN 1.25 Adjust + DIN IN4001 R2 * To provide current limiting of IO to 100 the system ground, the source of the FET must be tied to a negative voltage below -1.25 V. Vref Vref R2 R1 = IDSS IOmax + IDSS VO OM7602ST VIN 120 1.0µF Adjust DIN IN4001 MPS2222 TTL Control 720 1K 2N5640 Minimum VOUT = 1.25 V VO < BVDSS + 1.25 V + VSS ILmin – IDSS < IO < 1.5 A As shown 0 < IO < 1 A VSS D1 protects the device during an input short circuit. SLOW TURN-ON REGULATOR CURRENT REGULATOR VIN OM7602ST VOU R1 IOUT OM7602ST 240 IN4001 IAdj Adjust Adjust 50 K + MPS2907 R2 (V ) + IAdj 1.25 V IOUT = REF @ R1 R1 10 µF 10mA IOUT 1.5 A MECHANICAL OUTLINE .200 .190 .420 .410 3.3 PIN CONNECTION .045 .035 Tab .665 .645 .150 .140 .537 .527 .430 .410 .038 MAX. .750 .500 .005 1 .035 .025 .100 TYP. NOTES • Case is metal/hermetically sealed • Isolated Tab .120 TYP. ISOLATED Front View Pin 1: Adjust Pin 2: Output Pin 3: Input Tab: Isolated 2 3 NON-ISOLATED Front View Pin 1: Adjust Pin 2: Output Pin 3: Input Tab: Output 205 Crawford Street, Leominster, MA 01453 USA (508) 534-5776 FAX (508) 537-4246