LP395 www.ti.com SNOSBF3B - MAY 2004 - REVISED MAY 2005 LP395 Ultra Reliable Power Transistor Check for Samples: LP395 FEATURES 1 * * * 2 Internal thermal limiting Internal current and power limiting Guaranteed 100 mA output current * * * * 0.5 A typical base current Directly interfaces with TTL or CMOS +36 Volts on base causes no damage 2 s switching time DESCRIPTION The LP395 is a fast monolithic transistor with complete overload protection. This very high gain transistor has included on the chip, current limiting, power limiting, and thermal overload protection, making it difficult to destroy from almost any type of overload. Available in an epoxy TO-92 transistor package this device is guaranteed to deliver 100 mA. Thermal limiting at the chip level, a feature not available in discrete designs, provides comprehensive protection against overload. Excessive power dissipation or inadequate heat sinking causes the thermal limiting circuitry to turn off the device preventing excessive die temperature. The LP395 offers a significant increase in reliability while simplifying protection circuitry. It is especially attractive as a small incandescent lamp or solenoid driver because of its low drive requirements and blowout-proof design. The LP395 is easy to use and only a few precautions need be observed. Excessive collector to emitter voltage can destroy the LP395 as with any transistor. When the device is used as an emitter follower with a low source impedance, it is necessary to insert a 4.7 k resistor in series with the base lead to prevent possible emitter follower oscillations. Also since it has good high frequency response, supply by-passing is recommended. Areas where the LP395 differs from a standard NPN transistor are in saturation voltage, leakage (quiescent) current and in base current. Since the internal protection circuitry requires voltage and current to function, the minimum voltage across the device in the on condition (saturated) is typically 1.6 Volts, while in the off condition the quiescent (leakage) current is typically 200 A. Base current in this device flows out of the base lead, rather than into the base as is the case with conventional NPN transistors. Also the base can be driven positive up to 36 Volts without damage, but will draw current if driven negative more than 0.6 Volts. Additionally, if the base lead is left open, the LP395 will turn on. The LP395 is a low-power version of the 1-Amp LM195/LM295/LM395 Ultra Reliable Power Transistor. The LP395 is rated for operation over a -40C to +125C range. Connection Diagram TO-92 Package Figure 1. Order Number LP395Z See NS Package Z03A 1 2 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright (c) 2004-2005, Texas Instruments Incorporated LP395 SNOSBF3B - MAY 2004 - REVISED MAY 2005 www.ti.com Typical Applications Figure 2. Fully Protected Lamp Driver These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Absolute Maximum Ratings (1) Collector to Emitter Voltage 36V Collector to Base Voltage 36V Base to Emitter Voltage (Forward) 36V Base to Emitter Voltage (Reverse) 10V Base to Emitter Current (Reverse) 20 mA Collector Current Limit Internally Limited Power Dissipation Internally Limited Operating Temperature Range -40C to +125C Storage Temperature Range -65C to +150C Lead Temp. (Soldering, 10 seconds) (1) 2 260C Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. Submit Documentation Feedback Copyright (c) 2004-2005, Texas Instruments Incorporated Product Folder Links: LP395 LP395 www.ti.com SNOSBF3B - MAY 2004 - REVISED MAY 2005 Electrical Characteristics Symbol Parameter Conditions Tested Design Units Limit Limit (Limit) Typical (1) VCE Collector to Emitter 0.5 mA IC 100 mA (2) 36 Collector Current Limit (4) V(Max) (3) Operating Voltage ICL 36 VBE = 2V, VCE = 36V 45 25 20 mA(Min) VBE = 2V, VCE = 15V 90 60 50 mA(Min) mA(Min) VBE = 2V, 2V VCE 6V 130 100 100 IB Base Current 0 IC 100 mA -0.3 -2.0 -2.5 A(Max) IQ Quiescent Current VBE = 0V, 0 VCE 36V 0.24 0.50 0.60 mA(Max) VCE(SAT) Saturation Voltage VBE = 2V, IC = 100 mA 1.82 2.00 2.10 V(Max) BVBE Base to Emitter Break- 0 VCE 36V, IB = 2 A 36 36 V(Min) 0.79 0.90 V(Max) 1.40 V (Max) down Voltage VBE (4) Base to Emitter Voltage (5) tS Switching Time IC = 5 mA IC = 100 mA 0.69 (4) VCE = 20V, RL = 200 1.02 s 2 VBE = 0V, +2V, 0V JA Thermal Resistance 0.4 leads soldered to Junction to Ambient printed circuit board 0.125 leads soldered to printed circuit board (1) (2) (3) (4) (5) 150 180 C/W (Max) 130 160 C/W (Max) Guaranteed and 100% production tested. Guaranteed (but not 100% production tested) over the operating temperature and supply voltage ranges. These limits are not used to calculate outgoing quality levels. Parameters identified with boldface type apply at temp. extremes. All other numbers, unless noted apply at +25C. These numbers apply for pulse testing with a low duty cycle. Base positive with respect to emitter. Submit Documentation Feedback Copyright (c) 2004-2005, Texas Instruments Incorporated Product Folder Links: LP395 3 LP395 SNOSBF3B - MAY 2004 - REVISED MAY 2005 www.ti.com Simplified Circuit Applications Information One failure mode incandescent lamps may experience is one in which the filament resistance drops to a very low value before it actually blows out. This is especially rough on most solid-state lamp drivers and in most cases a lamp failure of this type will also cause the lamp driver to fail. Because of its high gain and blowout-proof design, the LP395 is an ideal candidate for reliably driving small incandescent lamps. Additionally, the current limiting characteristics of the LP395 are advantageous as it serves to limit the cold filament inrush current, thus increasing lamp life. 4 Submit Documentation Feedback Copyright (c) 2004-2005, Texas Instruments Incorporated Product Folder Links: LP395 LP395 www.ti.com SNOSBF3B - MAY 2004 - REVISED MAY 2005 Typical Performance Characteristics 5 Volt Transfer Function 36 Volt Transfer Function Collector Characteristics Available Collector Current Quiescent Collector Current Saturation Voltage Collector Current Threshold Typical Applications Figure 3. Lamp Flasher (Short Circuit Proof) Submit Documentation Feedback Copyright (c) 2004-2005, Texas Instruments Incorporated Product Folder Links: LP395 5 LP395 SNOSBF3B - MAY 2004 - REVISED MAY 2005 www.ti.com Figure 4. Optically Isolated Switch Figure 5. Two Terminal Current Limiter Figure 6. Composite PNP 6 Submit Documentation Feedback Copyright (c) 2004-2005, Texas Instruments Incorporated Product Folder Links: LP395 PACKAGE OPTION ADDENDUM www.ti.com 17-Nov-2012 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Qty Drawing Eco Plan Lead/Ball Finish MSL Peak Temp Samples (3) (Requires Login) (2) LP395Z/LFT1 ACTIVE TO-92 LP 3 2000 Green (RoHS & no Sb/Br) Call TI Level-1-NA-UNLIM LP395Z/LFT4 ACTIVE TO-92 LP 3 2000 TBD Call TI Call TI LP395Z/NOPB ACTIVE TO-92 LP 3 1800 Green (RoHS & no Sb/Br) Call TI Level-1-NA-UNLIM (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. 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Addendum-Page 1 MECHANICAL DATA MSOT002A - OCTOBER 1994 - REVISED NOVEMBER 2001 LP (O-PBCY-W3) PLASTIC CYLINDRICAL PACKAGE 0.205 (5,21) 0.175 (4,44) 0.165 (4,19) 0.125 (3,17) DIA 0.210 (5,34) 0.170 (4,32) Seating Plane 0.157 (4,00) MAX 0.050 (1,27) C 0.500 (12,70) MIN 0.104 (2,65) FORMED LEAD OPTION 0.022 (0,56) 0.016 (0,41) 0.016 (0,41) 0.014 (0,35) STRAIGHT LEAD OPTION D 0.135 (3,43) MIN 0.105 (2,67) 0.095 (2,41) 0.055 (1,40) 0.045 (1,14) 1 2 3 0.105 (2,67) 0.080 (2,03) 0.105 (2,67) 0.080 (2,03) 4040001-2 /C 10/01 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. Lead dimensions are not controlled within this area D. FAlls within JEDEC TO -226 Variation AA (TO-226 replaces TO-92) E. Shipping Method: Straight lead option available in bulk pack only. Formed lead option available in tape & reel or ammo pack. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 MECHANICAL DATA MSOT002A - OCTOBER 1994 - REVISED NOVEMBER 2001 LP (O-PBCY-W3) PLASTIC CYLINDRICAL PACKAGE 0.539 (13,70) 0.460 (11,70) 1.260 (32,00) 0.905 (23,00) 0.650 (16,50) 0.610 (15,50) 0.020 (0,50) MIN 0.098 (2,50) 0.384 (9,75) 0.335 (8,50) 0.748 (19,00) 0.217 (5,50) 0.433 (11,00) 0.335 (8,50) 0.748 (19,00) 0.689 (17,50) 0.114 (2,90) 0.094 (2,40) 0.114 (2,90) 0.094 (2,40) 0.169 (4,30) 0.146 (3,70) DIA 0.266 (6,75) 0.234 (5,95) 0.512 (13,00) 0.488 (12,40) TAPE & REEL 4040001-3 /C 10/01 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. 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