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OM7611ST ISOLATED HERMETIC TO-257AA ADJUSTABLE VOLTAGE REGULATORS Three Terminal, Adjustable Voltage, 3.0 Amp Precision Negative Regulators In Hermetic JEDEC TO-257AA Package FEATURES * * * * * * Isolated Hermetic Package, JEDEC TO-257AA Outline Reference Voltage Set Internally to 2% Built-In Thermal Overload Protection Short Circuit Current Limiting Pin Out Identical To Plastic TO-220 Product Is Available Screened To MIL-STD-883 DESCRIPTION These three terminal negative regulators are 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 3.0 amps of output current. These units feature 2% initial voltage tolerance, with 1.0% load regulation and .015% line regulation. ABSOLUTE MAXIMUM RATINGS @ 25C Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -35V Operating Junction Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55C to +150C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to +150C Typical Power/Thermal Characteristics: Rated Power @ 25C TC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28W TA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W Thermal Resistance qJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2C/W qJA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42C/W 3.3 4 11 R3 Supersedes 1 07 R2 3.3 - 153 OM7611ST ELECTRICAL CHARACTERISTICS Parameter Reference Voltage Symbol VREF -55C TA +125C (unless otherwise specified) Min. -1.238 Max. -1.262 V -1.215 -1.285 0.015 %/V 0.04 50 mV 75 1.0 % 1.5 0.02 56 %/W dB 53 70 dB 60 100 2.0 A 5.0 5.0 mA 3.0 3.0 6.0 A 3.0 0.5 2.5 A 0.5 1.5 % A Unit Test Conditions VIN - VOUT OE= 5 V, IOUT = 5 mA, TA = 25 C 3V VIN - VOUT OE 35 V VIN - VOUT OE 35 V * * * * Line Regulation (Note 1) Load Regulation (Note 1) VOUT VIN VOUT IOUT 3V VOUT OE 5 V, TA = 25 C 10 mA IOUT IMAX. VOUT OE 5.0 V 10 mA IOUT IMAX. Thermal Regulation Ripple Rejection (Note 2) VIN VREF 30 ms pulse, TA = 25 C VOUT OE -10 V, f = 120 Hz, CAdj = 0 = * * * * * * * * * * = VOUT OE -10 V, f = 120 Hz, CAdj = 10 F Adjust Pin Current Adjust Pin Current Change IAdj IAdj VDIFF = 35 V, IL = 10 mA 10 mA IOUT 3V Minimum Load Current IMin IMAX. VIN - VOUT OE 35 V VIN - VOUT OE 35 V VIN - VOUT OE 10 V Current Limit ILim VIN - VOUT OE 10 V VIN - VOUT OE= 35 V Temperature Stability (Note 2) Long Term Stability (Note 2) VOUT T VOUT T -55 C TJ +125 C TA = +125 C, t = 1000 hrs 1.0 % Notes: 1. Line and Load Regulation are measured at a constant junction temperature using a low duty cycle pulse technique. Although power dissipation is internally limited, regulation is guaranteed up to the maximum power dissipation of 30 W. Power dissipation is determined by the input/output differential voltage and the output current. Guaranteed maximum power dissipation will not be available over the full input/output voltage range. 2. Guaranteed by design, characterization or correlation to other tested parameters. 3.3 3. The * denotes the specifications which apply over the full operating temperature range. 3.3 - 154 OM7611ST TYPICAL PERFORMANCE CHARACTERISTICS Dropout Voltage Input-Output Differential (V) Reference Voltage (V) 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 TJ = -150C Temperature Stability 1.270 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 Minimum Load Current TJ = -55C TJ = -25C 1.250 1.240 1.230 -75 -50 -25 0 25 50 75 100125150 Temperature (C) Current (mA) 1.260 TJ = -55C TJ = 150C TJ = 25C 0.5 1.0 1.5 2.0 2.5 3.0 Output Current (A) 0 10 20 30 40 Input-Output Differential (V) Ripple Rejection 100 Ripple Rejection (dB) 80 60 40 VIN - VOUT = 5 V CADJ = 0 Ripple Rejection 100 Ripple Rejection (dB) Ripple Rejection (dB) 80 CADJ = 10F Ripple Rejection 100 CADJ = 10F CADJ = 10F 80 60 CADJ = 0 60 40 20 0 10 CADJ = 0 VIN = -15 V VOUT = -10 V IL = 500mA, TJ = 25C 40 VIN = -15 V 20 0 0 IL = 500 mA f = 120Hz, TJ = 25C 20 VOUT = -10 V f = 120Hz, TJ = 25C -10 -20 -30 Output Voltage (V) Output Impedance -40 100 1k 10k 100k 1M Frequency (Hz) 0 0.01 0.1 1 Output Current (A) 10 Line Transient Response 0.8 0.6 0.4 0.2 0 -0.2 -0.4 0 -0.5 -1.0 CADJ = 0 Load Transient Response 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 0 -0.5 -1.0 -1.5 Output Voltage Deviation (V) CADJ = 0 Output Impedance () VIN = -15V VOUT = -10V IL = 500mA TJ = 25C CL = 1F CADJ = 0 100 10-1 10-2 Input Voltage Output Voltage Change(V) Deviation (V) 101 CADJ = 10F VIN = -15V VOUT = -10V IL = 50mA TJ = 25C CL = 1F CADJ = 10F 10-3 10 100 1k 10k 100k 1M Frequency (Hz) Load Current (A) VOUT = -10V IL = 50mA TJ = 25C CL = 1F CADJ = 10F 0 10 20 30 Time (S) 40 0 10 20 30 Time (S) 40 3.3 Load Regulation* 0.8 0.4 0 -0.4 -0.8 0 0.8 1.6 2.4 3.2 Output Current (A) 4.0 Output Current (A) Guaranteed Minimum Output Current 5 Adjustment Current (A) 4 3 2 1 0 0 5 10 15 20 25 30 35 Input-Output Differential (V) Adjustment Current 80 75 70 65 60 55 50 -75 -50 -25 0 25 50 75 100 125 150 Temperature (C) Output Voltage Deviation (%) 3.3 - 155 OM7611ST TYPICAL APPLICATIONS Multiple Tracking Regulators C1 + 10F + C2 5F Adj VIN VOUT OM7611 R2 IADJ VREF + + C3 10F 2F Adj - VIN VIN R1 R2 + C1 2F Solid Tantalum -VOUT1 + R1 C3 2F VOUT IN4002 -VIN -VOUT + 2F OM7611 VOUT = VREF ( 1+ R2 R1 ) +IADJ (R2) VIN Adj R2 VOUT IN4002 OM7611 + 2F Solid Tantalum -VOUT2 High Stability Regulator + 7V LM329B + 5F R3 1.5k 1% 2F Adj VIN R#N R2* + R1 1k 1% 2F Solid Tantalum -VOUT VOUT OM7611 + 2F Solid Tantalum -VOUT3 -VIN Adj VIN VOUT OM7611 *R2 = VOUT 9.08 X 10-3 MECHANICAL OUTLINE .420 .410 .200 .190 .045 .035 .665 .645 .537 .527 .430 .410 .038 MAX. PIN CONNECTION Tab .150 .140 3.3 .750 .500 .005 .035 .025 .100 TYP. .120 TYP. 123 Front View Pin 1: Adjust Pin 2: VIN Pin 3: VOUT Tab: Isolated NOTES * Case is metal/hermetically sealed * Isolated Tab 205 Crawford Street, Leominster, MA 01453 USA (508) 534-5776 FAX (508) 537-4246 |
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