LT1185M/883 TECHNOLOGY DESCRIPTION The LT1185M/883 is a 3A low dropout regulator with adjustable current limit and remote sense capability. It can be used as a positive output regulator with floating input or as a Standard negative regulator with grounded input. The output voltage range is 2.5V to 25V, with +1% accuracy on the internal reference voltage. The LT1185M/883 uses a saturation-limited NPN transis- tor as the pass element. This device gives the linear dropout characteristics of an FET pass element with sig- nificantly less die area. High efficiency is maintained by using special anti-saturation circuitry that adjusts base drive to track load current. The on resistance is typically 0.25Q. Accurate current limit is programmed with a single 1/8W external resistor, with a range of zero to three amperes. A second, fixed internal limit circuit prevents destructive currents if the programming current is accidentally over- ranged. Shutdown of the regulator output is gu
... 7V Output Voltage ........................................................ 30V Output Reverse Voltage ............................................ 2V Operating Ambient Temperature Range LT1185C ............................................... 0C to 70C LT1185M ......................................... - 55C to 125C Operating Junction Temperature Range* Control Section LT1185C ............................................. 0C to 125C LT1185I .......................................... - 40C to 125C LT1185M ........................................ - 55C to 150C Power Transistor Section LT1185C ............................................. 0C to 150C LT1185I .......................................... - 40C to 150C LT1185M ........................................ - 55C to 175C Storage Temperature Range ................ - 65C to 150C Lead Temperature (Soldering, 10 sec)................ 300C BOTTOM VIEW GND ORDER PART NUMBER FB 1 2 VIN (CASE) LT1185MK 3 4 VOUT RE
... 7V Output Voltage ........................................................ 30V Output Reverse Voltage ............................................ 2V Operating Ambient Temperature Range LT1185C ............................................... 0C to 70C LT1185M ......................................... - 55C to 125C Operating Junction Temperature Range* Control Section LT1185C ............................................. 0C to 125C LT1185I .......................................... - 40C to 125C LT1185M ........................................ - 55C to 150C Power Transistor Section LT1185C ............................................. 0C to 150C LT1185I .......................................... - 40C to 150C LT1185M ........................................ - 55C to 175C Storage Temperature Range ................ - 65C to 150C Lead Temperature (Soldering, 10 sec)................ 300C BOTTOM VIEW GND ORDER PART NUMBER FB 1 2 VIN (CASE) LT1185MK 3 4 VOUT RE
........... 30V Output Reverse Voltage ............................................ 2V Operating Ambient Temperature Range LT1185C ............................................... 0C to 70C LT1185I ............................................. - 40C to 85C LT1185M (OBSOLETE) .................... - 55C to 125C *See Application Section for details on calculating Operation Junction Temperature Operating Junction Temperature Range* Control Section LT1185C ............................................. 0C to 125C LT1185I .......................................... - 40C to 125C LT1185M (OBSOLETE) ................... - 55C to 150C Power Transistor Section LT1185C ............................................. 0C to 150C LT1185I .......................................... - 40C to 150C LT1185M (OBSOLETE) ................... - 55C to 175C Storage Temperature Range ................ - 65C to 150C Lead Temperature (Soldering, 10 sec)................ 300C U U W PACKAGE/ORDER I FOR ATIO B
... 7V Output Voltage ........................................................ 30V Output Reverse Voltage ............................................ 2V Operating Ambient Temperature Range LT1185C ............................................... 0C to 70C LT1185M (OBSOLETE) .................... - 55C to 125C *See Application Section for details on calculating Operation Junction Temperature Operating Junction Temperature Range* Control Section LT1185C ............................................. 0C to 125C LT1185I .......................................... - 40C to 125C LT1185M (OBSOLETE) ................... - 55C to 150C Power Transistor Section LT1185C ............................................. 0C to 150C LT1185I .......................................... - 40C to 150C LT1185M (OBSOLETE) ................... - 55C to 175C Storage Temperature Range ................ - 65C to 150C Lead Temperature (Soldering, 10 sec)................ 300C U U W PACKAGE/ORDER I FOR ATIO B
ed by thermal regulation and temperature coefficient of the reference. See Application Section for details. Note 7: Guaranteed by design and correlation to other tests, but not tested. Note 8: Tjygin = 0C for the LT1185C, 40C for LT11851, and -55C for the LT1185M. Power transistor area and control circuit area have different maximum junction temperatures. Control area limits are T jax = 125C for the LT1185C and LT11851 and 150C for the LT1185M. Power area limits are 150C for LT1185C and LT1185! and 175C for LT1185M. Note 9: Vsat is the maximum specified dropout voltage; 0.25V + 0.25 x lout: Note 10: Current limit is programmed with a resistor from REF pin to GND pin. The value is 15k/I,\1y. Note 11: For Viy Vout = 1.5V; Vin = 5V, Vout = 3.5V. Vout = 1V for all other current limit tests. LY WhineLT1185 TYPICAL PERFORMANCE CHARACTERISTICS OUTPUT CURRNT (A) CURRENT (mA) Internal Current Limit TYPICAL @ TEST POINTS 0 5 10 15 20 25 380 INPUT-OUTPUT DIFFERENTIAL (V) 171185 + T
A LT1020MJ 9084101MCA LT1033MK 8874101XA LT1076HVMK 9311902MYA LT1076MK 9311901MYA LT1083MK-5 9073901MXA LT1084MK 8952101XA LT1084MK-5 9073902MXA LT1085MK 8864601XA LT1085MK-5 9073903MXA LT1086MK, H 8998101XA, YA LT1086MK-5 9073904MXA LT1120MJ8 9322401MPA LT1185MK 9469501MXA References Generic SMD 5962LT1004MH-1.2 8859701XA LT1004MH-2.5 8859702XA LT1009MH 8961001XA LT1019AMH-10 9059501GA LT1019AMH-5 9059502GA LT1019AMH-4.5 9059503GA LT1019AMH-2.5 9059504GA LT1019MH-10 9059505GA LT1019MH-5 9059506GA LT1019MH-4.5 9059507GA LT1019MH-2.5 9059508GA LT1021BMH-10 8860001GA LT1021BMH-5 8876201GA LT1021BMH-7 8864701GA LT1021CMH-10 8860002GA LT1021CMH-5 8876202GA LT1021DMH-10 8860003GA LT1021DMH-5 8876203GA LT1021DMH-7 8864702GA LT1029AMH 9051901XA LT1029MH 9051902XA LT1031BMH 8980201XA , LTC and LT are registered trademarks of Linear Technology Corporation. LT1031CMH 8980202XA LT1031DMH 8980203XA LT580SH 8686101XA LT580TH 8686102XA Comparators Generic SMD 5962LT1010MH, K 8856201XA, YA LT1011AMH, J8 906270
A LT1020MJ 9084101MCA LT1033MK 8874101XA LT1076HVMK 9311902MYA LT1076MK 9311901MYA LT1083MK-5 9073901MXA LT1084MK 8952101XA LT1084MK-5 9073902MXA LT1085MK 8864601XA LT1085MK-5 9073903MXA LT1086MK, H 8998101XA, YA LT1086MK-5 9073904MXA LT1120MJ8 9322401MPA LT1185MK 9469501MXA References Generic SMD 5962LT1004MH-1.2 8859701XA LT1004MH-2.5 8859702XA LT1009MH 8961001XA LT1019AMH-10 9059501GA LT1019AMH-5 9059502GA LT1019AMH-4.5 9059503GA LT1019AMH-2.5 9059504GA LT1019MH-10 9059505GA LT1019MH-5 9059506GA LT1019MH-4.5 9059507GA LT1019MH-2.5 9059508GA LT1021BMH-10 8860001GA LT1021BMH-5 8876201GA LT1021BMH-7 8864701GA LT1021CMH-10 8860002GA LT1021CMH-5 8876202GA LT1021DMH-10 8860003GA LT1021DMH-5 8876203GA LT1021DMH-7 8864702GA LT1029AMH 9051901XA LT1029MH 9051902XA LT1031BMH 8980201XA LT1031CMH 8980202XA LT1031DMH 8980203XA LT580SH 8686101XA LT580TH 8686102XA Comparators Generic SMD 5962LT1010MH, K 8856201XA, YA LT1011AMH, J8 9062701GA, PA LT1011MH, J8 9062702GA, PA LT1016MH, J8 8684501IA, PA LT1017MH, J
er tests, but not tested. 9. TJMIN = - 40C for AS1185I and -55C for the AS1185M. Power transistor area and control circuit area have different maximum junction temperatures. Control area limits are TJMAX = 125C for the LT1185C and LT1185I and 150C for the LT1185M. Power area limits are 150C for AS1185I and 175C for AS1185M. 10. VSAT is the maximum specified dropout voltage; 0.25V + 0.25 * IOUT. 11. Current limit is programmed with a resistor from REF pin to GND pin. The value is 15k/ILIM. 12. For VIN - VOUT = 1.5V; VIN = 5V, VOUT = 3.5V. VOUT = 1V for all other current limit tests. AS1185 Rev. 1.1 6/05 Austin Semiconductor, Inc. reserves the right to change products or specifications without notice. 2 LOW DROPOUT REGULA TOR REGULAT Austin Semiconductor, Inc. AS1185 ELECTRICAL CHARACTERISTICS: The * denotes specifications which apply over the operating temperature range, otherwise specifications are at TA = 25C. Adjustable version, VIN = 7.4V, VOUT = 5V, IOUT = 1mA, RLIM = 5.6k, unless otherwise n
Generic LT1010MH, kK Analog-to-Digital Converters Generic LTC"1291CMJ8 LTC1292CMJ8 LTC1293CMJ LTC1294CMJ Regulators Generic LT1003MK LT1020MJ LT1033MK LT1076HVMK LT1076MK LT1083MK-5 LT1084MK LT1084MK-5 LT1085MK LT1085MK-5 LT1086MK, H LT1086MK-5 LT1120MJ8 LT1185MK References Generic LT1004MH-1.2 LT1004MH-2.5 LT1009MH LT1019AMH-10 LT1019AMH-5 LT1019AMH-4.5 LT1019AMH-2.5 LT1019MH-10 LT1019MH-5 LT1019MH-4.5 LT1019MH-2.5 LT1021BMH-10 LT1021BMH-5 LT1021BMH-7 LT1021CMH-10 LT1021CMH-5 LT1021DMH-10 LT1021DMH-5 LT1021DMH-7 LT1029AMH LT1029MH LT1031BMH LT1031CMH LT1031DMH LT580SH LT580TH SMD 5962- 8856201XA, YA SMD 5962- 9305701MPA 9305702MPA 9305703MEA 9305704MRA SMD 5962- 8987301XA 9084101MCA 8874101XA 9311902MYA 9311901MYA 9073901MXA 8952101XA 9073902MXA 8864601XA 9073903MXA 8998101XA, YA 9073904MXA 9322401MPA 9469501MXA SMD 5962- 8859701XA 8859702xA 8961001XA 9059501GA 9059502GA 9059503GA 9059504GA 9059505GA 9059506GA 9059507GA 9059508GA 8860001GA 8876201GA 8864701GA 8860002GA 8876202GA 8860003GA 88762
er tests, but not tested. 9. TJMIN = - 40C for AS1185I and -55C for the AS1185M. Power transistor area and control circuit area have different maximum junction temperatures. Control area limits are TJMAX = 125C for the LT1185C and LT1185I and 150C for the LT1185M. Power area limits are 150C for AS1185I and 175C for AS1185M. 10. VSAT is the maximum specified dropout voltage; 0.25V + 0.25 * IOUT. 11. Current limit is programmed with a resistor from REF pin to GND pin. The value is 15k/ILIM. 12. For VIN - VOUT = 1.5V; VIN = 5V, VOUT = 3.5V. VOUT = 1V for all other current limit tests. AS1185 Rev. 1.0 6/03 Austin Semiconductor, Inc. reserves the right to change products or specifications without notice. 2 LOW DROPOUT REGULA TOR REGULAT Austin Semiconductor, Inc. AS1185 ELECTRICAL CHARACTERISTICS: The * denotes specifications which apply over the operating temperature range, otherwise specifications are at TA = 25C. Adjustable version, VIN = 7.4V, VOUT = 5V, IOUT = 1mA, RLIM = 5.6k, unless otherwise n
A LT1020MJ 9084101MCA LT1033MK 8874101XA LT1076HVMK 9311902MYA LT1076MK 9311901MYA LT1083MK-5 9073901MXA LT1084MK 8952101XA LT1084MK-5 9073902MXA LT1085MK 8864601XA LT1085MK-5 9073903MXA LT1086MK, H 8998101XA, YA LT1086MK-5 9073904MXA LT1120MJ8 9322401MPA LT1185MK 9469501MXA References Generic SMD 5962LT1004MH-1.2 8859701XA LT1004MH-2.5 8859702XA LT1009MH 8961001XA LT1019AMH-10 9059501GA LT1019AMH-5 9059502GA LT1019AMH-4.5 9059503GA LT1019AMH-2.5 9059504GA LT1019MH-10 9059505GA LT1019MH-5 9059506GA LT1019MH-4.5 9059507GA LT1019MH-2.5 9059508GA LT1021BMH-10 8860001GA LT1021BMH-5 8876201GA LT1021BMH-7 8864701GA LT1021CMH-10 8860002GA LT1021CMH-5 8876202GA LT1021DMH-10 8860003GA LT1021DMH-5 8876203GA LT1021DMH-7 8864702GA LT1029AMH 9051901XA LT1029MH 9051902XA LT1031BMH 8980201XA , LTC and LT are registered trademarks of Linear Technology Corporation. LT1031CMH 8980202XA LT1031DMH 8980203XA LT580SH 8686101XA LT580TH 8686102XA Comparators Generic SMD 5962LT1010MH, K 8856201XA, YA LT1011AMH, J8 906270
s Generic LT1010MH, K Analog-to-Digital Converters Generic LTC"1291CMJ8 LTC1292CMJ8 LTC1293CMJ LTC1294CMJ Regulators Generic LT1003MK LT1020MJ LT1033MK LT1076HVMK LT1076MK LT1083MK-5 LT1084MK LT1084MK-5 LT1085MK LT1085MK-5 LT1086MK, H LT1086MK-5 LT1120MJ8 LT1185MK References Generic LT1004MH-1.2 LT1004MH-2.5 LT1008MH LT10719AMH-10 LT1019AMH-5 LT1019AMH-4.5 LT1019AMH-2.5 LT1019MH-10 LT1019MH-5 LT1019MH-4.5 LT1019MH-2.5 LT1021BMH-10 LT1021BMH-5 LT1021BMH-? LT1021CGMH-10 LT1021CMH-5 LT1021DMH-10 LT1021DMH-5 LT1021DMH-7 LT1029AMH LT1029MH LT1031BMH LT1031CMH LT1031DMH LT580SH LT580TH SMD 5962- 8856201XA, YA SMD 5962- 9305701MPA 9305702MPA 9305703MEA 9305704MRA SMD 5962- 8987301XA 9084101MCA 8874101XA 9311902MYA 9311901MYA 9073901MXA 6952101XA 9073902MXA 8864601XA 9073903MXA 8998101XA, YA 9073904MXA 9322401MPA 9469501MXA SMD 5962- 8859701XA 8859702KA 8961001XA 9059501GA 9059502GA 9059503GA 9059504GA 9059505GA 9059506GA 9059507GA 9059508GA 8860001GA 8876201GA 8864701GA 8860002GA 88/6202GA 8860003GA 887
A LT1020MJ 9084101MCA LT1033MK 8874101XA LT1076HVMK 9311902MYA LT1076MK 9311901MYA LT1083MK-5 9073901MXA LT1084MK 8952101XA LT1084MK-5 9073902MXA LT1085MK 8864601XA LT1085MK-5 9073903MXA LT1086MK, H 8998101XA, YA LT1086MK-5 9073904MXA LT1120MJ8 9322401MPA LT1185MK 9469501MXA References Generic SMD 5962LT1004MH-1.2 8859701XA LT1004MH-2.5 8859702XA LT1009MH 8961001XA LT1019AMH-10 9059501GA LT1019AMH-5 9059502GA LT1019AMH-4.5 9059503GA LT1019AMH-2.5 9059504GA LT1019MH-10 9059505GA LT1019MH-5 9059506GA LT1019MH-4.5 9059507GA LT1019MH-2.5 9059508GA LT1021BMH-10 8860001GA LT1021BMH-5 8876201GA LT1021BMH-7 8864701GA LT1021CMH-10 8860002GA LT1021CMH-5 8876202GA LT1021DMH-10 8860003GA LT1021DMH-5 8876203GA LT1021DMH-7 8864702GA LT1029AMH 9051901XA LT1029MH 9051902XA LT1031BMH 8980201XA LT1031CMH 8980202XA LT1031DMH 8980203XA LT580SH 8686101XA LT580TH 8686102XA Comparators Generic SMD 5962LT1010MH, K 8856201XA, YA LT1011AMH, J8 9062701GA, PA LT1011MH, J8 9062702GA, PA LT1016MH, J8 8684501IA, PA LT1017MH, J
s Generic LT1010MH, K Analog-to-Digitai Converters Generic LTC*1291CMJ8 LTC1292CMJ8 LTC1293CMJ LTC1294CMJ Regulators Generic LT1003MK LT1020MJ LT1033MK LT107GHVMK LT1076MK LT1083MK-5 LT1084MK LT1084MK-5 LT1085MK LT10B5MK-5 LT1086MK, H LT1086MK-5 LT1120MJ8 LT1185MK References Generic LT1004MH-1.2 LT1004MH-2.5 LT{009MH LT101SAMH-10 LT1019AMH-5 LT1019AMH-4.5 LT1019AMH-2.5 LT10149MH-10 LT1019MH-5 LT1019MH-4.5 LT1019MH-2.5 LT1021BMH-10 LT1024BMH-5 LT1021BMH-7 LT1021CMH-10 L71021CMH-5 LT1021DMH-10 LT1021DMH-5 LT1021DMH-7 LT1029AMH LT1029MH LT1031BMH LT1031CMH LT1031DMH LT580SH LT580TH SMD 5962- 856201XA, YA SMD 5962- 9305701 MPA 93057 02MPA 9305703MEA 9305704MRA SMD 5962- 8987301XA 9084101MCA 8874101XA 9311902MYA 9311907MYA 9073901MXA 8952101XA 9073902MXA 8864601 XA 9073903MXA 8998101XA, YA 9073904MXA 9322401MPA 946950 1MXA SMD 5962- 8859701XA 8859702XA 8961001XA 9059501GA 9059502GA 9059503GA 9059504GA 9059505GA 9059506GA 9059507GA 9059508GA 860001GA 8876201GA 8864701GA 8860002GA 8876202GA 8860003GA 88