OM1860NKM OM1860STM OM1860NHM 1.5 AMP LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR APPROVED TO DESC DRAWING 5962-89981 Three Terminal, Positive Adjustable Low Dropout Voltage Regulator In Hermetic Packages FEATURES • • • • • • • • Similar To Industry Standard LT1086 Approved To DESC Standardized Military Drawing Number 5962-89981 Adjustable Output Voltage Built In Thermal Overload Protection Short Circuit Current Limiting Maximum Output Voltage Tolerance is Guaranteed To ±1% Guaranteed Dropout Voltage At Multiple Current Levels TO-257 Available in Isolated and Non-Isolated Packages DESCRIPTION This three terminal positive adjustable voltage regulator is designed to provide 1.5A with higher efficiency than conventional voltage regulators. This device is designed to operate to 1 Volt input to output differential and the dropout voltage is specified as a function of load current. Supplied in easy-to-use hermetic TO-257, TO-3 and TO-39 packages, this device is ideally suited for Military applications where small size and high reliability is required. ABSOLUTE MAXIMUM RATINGS @ 25°C Power Dissipation (Pd) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited Input - Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65°C to + 150°C Lead Temperature (Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C Thermal Resistance: θJC (TO-257, Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2°C/W θJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°C/W θJC (TO-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0°C/W θJA (TO-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35°C/W θJC (TO-39) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40°C/W θJA (TO-39) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140°C/W Maximum Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 A Recommended Operating Conditions: Output Voltage Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.3V to 15 V Ambient Operating Temperature Range (TA) . . . . . . . . . . . . . . . . - 55°C to + 125°C Input Voltage Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V to 25 V 1 08 R3 Supersedes 4 11 R2 3.3 - 83 3.3 OM1860STM OM1860NKM OM1860NHM ELECTRICAL CHARACTERISTICS -55°C ≤ TA ≤ 125°C (unless otherwise specified) Parameter Symbol Test Conditions Min. Max. Unit Reference Voltage VREF VIN - VOUT = 3.0 V, TA = 25° C 1.238 1.262 V 1.220 1.270 V 0.2 % 0.5 % 0.8 % 1.0 % IOUT = 10 mA 1.5 V ≤ VIN - VOUT ≤ 25 V, • 10 mA ≤ IOUT ≤ 1.0 A Line Regulation ∆VOUT 1.5 V ≤ VIN - VOUT ≤ 15 V, (Note 1) ∆VIN IOUT = 10 mA, TA = 25° C 15 V ≤ VIN - VOUT ≤ 35 V, • IOUT = 10 mA Load Regulation ∆VOUT VIN - VOUT = 3.0 V, TA = 25° C (Note 1) ∆IOUT 10 mA ≤ IOUT ≤ 1.0 A Dropout Voltage VDO IOUT = 1.0 A, ∆VREF = 1% Thermal Regulation - 30 ms pulse, TA = +25° C Ripple Rejection ∆VIN f = 120 Hz, CAdj = 25 µF, ∆VOUT COUT = 25 µF (tantalum), IOUT = 1.0 A, IAdj 1.5 V ≤ VIN - VOUT ≤ 25 V, • • • 1.5 V 0.04 %/W 60 dB VIN - VOUT = 3.0 V Adjust Pin Current • 120 µA • 5.0 µA 10 mA 2.5 A 10 mA ≤ IOUT ≤ 1.0 A Adjust Pin Current Change ∆IAdj Miminum Load Current IMin VIN - VOUT = 25 V Current Limit ILim VIN - VOUT ≤ 5.0 V 1.5 V ≤ VIN - VOUT ≤ 25 V, 10 mA ≤ IOUT ≤ 1.0 A VIN - VOUT = 25 V Temperature Stability ∆VOUT (Note 2) ∆T Long Term Stability ∆VOUT (Note 2) ∆T -55° C ≤ TJ ≤ +125° C • • • • 1.5 0.075 TA = +125° C, t = 1000 hrs A 1.5 % 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 15 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. 3.3 2. Guaranteed by design, characterization or correlation to other tested parameters. 3. The • denotes the specifications which apply over the full operating temperature range. PART NUMBER DESIGNATOR Standard Military Drawing Number Omnirel Part Number 5962-8998101Y OM1860NHM TO-39 Package 5962-8998101X OM1860NKM TO-3 5962-8998101U OM1860STM TO-257 (Isolated) Part Numbering System Voltage Regulators OM-1860-S-T-M Company Identification Part Number Screening M= MIL-M 38535 Package (see Package codes*) S= Isolated N= Non isolated 3.3 - 84 * Package Codes: K= TO-204AA (TO-3) H= TO-39 T= TO-257AA OM1860STM OM1860NKM OM1860NHM SHORT CIRCUIT CURRENT LOAD REGULATION 2.5 0.10 OUTPUT VOLTAGE DEVIATION (%) ∆I= 1.5A SHORT CIRCUIT CURRENT (A) 0.05 0 -0.05 -0.10 -0.15 2 Tj = 150°C 1.5 Tj = 25°C 1 Tj = -55°C 0.5 GUARANTEED OUTPUT CURRENT 0 -0.20 -50 -25 0 25 50 75 100 125 0 150 5 30 25 100 90 90 fR = 120Hz 80 80 VRIPPLE 3Vp-p RIPPLE REJECTION (dB) ADJUSTMENT PIN CURRENT (µA) 20 RIPPLE REJECTION VS. CURRENT ADJUSTMENT PIN CURRENT 70 60 50 40 30 70 fR =20kHz 60 VRIPPLE ≤ 3Vp-p 50 VRIPPLE 0.5Vp-p 40 30 20 20 10 10 0 VOUT =5V CADJ =25µF COUT =25µF VRIPPLE ≤ 0.5Vp-p 0 -50 -25 0 25 50 75 100 125 0 150 0.25 0.5 0.75 1 1.25 1.5 OUTPUT CURRENT (A) TEMERATURE (°C) TEMPERATURE STABILITY MINIMUM OPERATING CURRENT 10 MINIMUM OPERATING CURRENT (mA) 2.0 OUTPUT VOLTAGE CHANGE (%) 15 INPUT/OUTPUT DIFFERENTIAL (V) TEMPERATURE (°C) 100 10 1.0 0 -1.0 9 8 7 6 5 Tj = 150°C Tj = 25°C 4 3 2 1 Tj = -55°C -2.0 -50 -25 0 25 50 75 100 125 0 150 TEMPERATURE (°C) 0 5 10 15 20 25 INPUT/OUTPUT DIFFERENTIAL (V) 3.3 - 85 30 35 OM1860STM OM1860NKM OM1860NHM TYPICAL APPLICATIONS 1.2V - 15V Adjustable Regulator OM1860 VIN VOUT ADJ + R1 121 Ω 5V Regulator with Shutdown VOUT † VIN VIN C2 100µF R2 5k VOUT ADJ + C1 10µF OM1860 + 121 Ω 1% + 10µF 2N3904 TTL 1k 5V 100µF 365 Ω 1% 1k *NEEDED IF DEVICE IS FAR FROM FILTER CAPACITORS † R2 __ V OUT =1.25V 1+ R1 ( ) MECHANICAL OUTLINE TO-3 OM1860NKM MECHANICAL OUTLINE OM1860STM 1.197 1.53 REF. .200 .190 .420 .410 .045 .035 1.177 0.875 MAX. .537 .527 1 2 0.450 0.250 .665 .645 4 .150 .140 3 0.675 0.655 0.188 R. MAX. 0.135 MAX. 0.312 MIN. .430 .410 SEATING PLANE .038 MAX. 0.225 0.205 0.043 0.038 0.161 0.151 0.525 R. MAX. 2 PLCS. PIN OUT .750 .500 1 2 Case .005 Adjust VIN VOUT MECHANICAL OUTLINE TO-39 .035 .025 .100 TYP. PIN OUT 1 2 3 4 3.3 .120 TYP. Adjust VOUT VIN Isolated NOTES • Case is metal/hermetically sealed • Isolated Tab OM1860NHM TO-39 Pin 1 Pin 2 Case Adjust Input Output 0.440 0.420