DLA - SMD-5962-94576
MICROCIRCUITS, LINEAR, VOLTAGE REGULATOR, SWITCHING, MONOLITHIC SILICON
| Organization: | DLA |
| Publication Date: | 26 July 1994 |
| Status: | inactive |
| Page Count: | 11 |
scope:
This drawing forms a part of a one part - one part number documentation system (see 6.6 herein). Two product assurance classes consisting of military high reliability (device classes Q and M) and space application (device class V), and a choice of case outlines and lead finishes are available and are reflected in the Part or Identifying Number (PIN). Device class M microcircuits represent non-JAN class B microcircuits in accordance with 1.2.1 of MIL-STD-883, "Provisions for the use of MIL-STD-883 in conjunction with compliant non-JAN devices". When available, a choice of Radiation Hardness Assurance (RHA) levels are reflected in the PIN.
The PIN shall be as shown in the following example:
Device class M RHA marked devices shall meet the MIL-I-38535 appendix A specified RHA levels and shall be marked with the appropriate RHA designator. Device classes Q and V RHA marked devices shall meet the MIL-I-38535 specified RHA levels and shall be marked with the appropriate RHA designator. A dash (-) indicates a non-RHA device.
The device type(s) shall identify the circuit function as follows:
Device type Generic number Circuit function 01 LT1074 5 A step-down switching regulator 02 LT1074HV 5 A step-down switching regulator
The device class designator shall be a single letter identifying the product assurance level as follows:
Device class Device requirements documentation M Vendor self certification to the requirements for non-JAN class B microcircuits in accordance with 1.2.1 of MIL-STD-883 Q or V Certification and qualification to MIL-I-38535
The case outline(s) shall be as designated in MIL-STD-1835 and as follows:
Outline letter Descriptive designator Terminals Package style Y See figure 1 4 TO-3 flange mount style
The lead finish shall be as specified in MIL-STD-883 (see 3.1 herein) for class M or MIL-I-38535 for classes Q and V. Finish letter "X" shall not be marked on the microcircuit or its packaging. The "X" designation is for use in specifications when lead finishes A, B, and C are considered acceptable and interchangeable without preference.
Supply voltage (VIN): Device type 01 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 V dc Device type 02 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 V dc Switch output voltage (VSW): With respect to input voltage, device type 01 . . . . . . . . . . . . . 64 V dc With respect to input voltage, device type 02 . . . . . . . . . . . . . 75 V dc With respect to GND pin, device type 01 . . . . . . . . . . . . . . . . 35 V dc 2/ With respect to GND pin, device type 02 . . . . . . . . . . . . . . . . 45 V dc 2/ Feedback pin voltage (VFB) . . . . . . . . . . . . . . . . . . . . . . . −2 V dc, +10 V dc Junction temperature (TJ) . . . . . . . . . . . . . . . . . . . . . . . +150°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C Lead temperature (soldering, 10 seconds) . . . . . . . . . . . . . . . . . +300°C Thermal resistance, junction-to-case (ΘJC), case outline Y . . . . . . . . 2.5°C/W Thermal resistance, junction-to-ambient (ΘJA), case outline Y. . . . . . . . 35°C/W
Ambient operating temperature range (TA) . . . . . . . . . . . . . . . . . . . −55°C to +125°C Supply voltage range: Device type 01 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0 V dc to 40 V dc Device type 02 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0 V dc to 60 V dc
intended Use:
Microcircuits conforming to this drawing are intended for use for Government microcircuit applications (original equipment), design applications, and logistics purposes.
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