1.24V Precision Adjustable Shunt Regulator

Transcription

1 SPX V Precision djustable Shunt Regulator FETURES Reference Voltage: 1.24V Initial ccuracy:.5% Wide Operating Current, 6µ to 1m Ultra Low Reference Input Current, 1n Operating Voltage Range: V REF to 2V C to 15 C Guaranteed Operation SOT-2- Package Upgrade to LMV41, TLV41, SC41L NODE SPX REF CTHODE Now vailable in Lead Free Packaging PPLICTIONS Switching Power Supplies djustable Supplies Error mplifiers Single Supply mplifier Monitors / VCRs / TVs Personal Computers Voltage References DESCRIPTION The SPX142 is a three terminal adjustable shunt voltage regulator that provides a highly accurate 1.24V bandgap reference with.5% accuracy, eliminating the need for trimming in most power supply designs. Offered in the tiny SOT-2 package, the SPX142 has an extremely wide operating current range of 6u to 1m, and reference input current of only 1n (typ). The SPX142 can regulate outputs from V REF to 2V, using two external resistors, and is guaranteed over the extended commercial temperature range of C to 15 C. The combination of the small size, wide output current capability, flexible voltage range, and stable performance over the entire extended commercial temperature range, makes the SPX142 the ideal candidate a variety of shunt regulator and current source designs in applications such as Portable meters, Instrumentation, and Industrial Process Control. Cathode (K) FUNCTIONL DIGRM Reference (R) V - node () Date: 5/6/4 SPX V Precision djustable Shunt Regulator Copyright 24 Sipex Corporation 1

2 Cathode-node Reverse Breakdown V KZ... 22V node-cathode Forward Current, (<1ms) I K... 1 Operating Cathode Current I K... 12m Reference Input Current I REF... 1m BSOLUTE MXIMUM RTINGS Continuos Power Dissipation at 25 C P D SOT mw Junction Temperature T J C Storage Temperature T STG to 15 C Lead Temperature (Soldering 1 sec.) T L... C Stresses greater than those listed under BSOLUTE MXIMUM RTINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. RECOMMENDED CONDITIONS PRMETER SYMBOL RTING UNIT Cathode Voltage V K V REF to 2 V Cathode Current I K 1 m TYPICL THERML RESISTNCES PCKGE θ J θ JC TYPICL DERTING SOT C/W 15 C/W 1.7 mw/ C Typical deratings of the thermal resistances are given for ambient temperature >25. ELECTRICL CHRCTERISTICS Electrical characteristics are guaranted over the full junction temperature range ( C to 15 C). mbient temperature must be derated based upon power dissipation and package thermal characteristics. Unless otherwise specified, test conditions are: V K = V REF and I K = 1m. PRMETER SYMBOL FIGURE CONDITIONS MIN TYP MX UNITS ccuracy.5% SPX142 Output Voltage V REF 2 T J = 25 C V Temperature Deviation V REF 2 < T J < 15 C 6 12 mv Line Regulation V REF V K = 1.25V to 15V 15 7 mv Load Regulation V REF 2 I K = 1µ to 1m 1 mv Reference Input Current I REF T J = 25 C, R1 = 1KΩ, R2 =.1. µ Reference Input Current I REF < T J < 15 C,.5.2 µ Temperature Coefficient R1 = 1KΩ, R2 = Minimim Cathode I K(MIN) 2 T J = 25 C 6 8 µ Current for Regulation Off State Leakage I K(MIN) 4 V REF = V, V K = 18V, T J = 25 C.1 5 n PRMETER SYMBOL FIGURE CONDITIONS MIN TYP MX UNITS ccuracy 1.% SPX142 Output Voltage V REF 2 T J = 25 C V Temperature Deviation V REF 2 < T J < 15 C 9 18 mv Line Regulation V REF V K = 1.25V to 15V 15 7 mv Load Regulation V REF 2 I K = 1µ to 1m 1 mv Reference Input Current I REF T J = 25 C, R1 = 1KΩ, R2 =.1.5 µ Reference Input Current I REF < T J < 15 C,.5.4 µ Temperature Coefficient R1 = 1KΩ, R2 = Minimim Cathode I K(MIN) 2 T J = 25 C 6 1 µ Current for Regulation Off State Leakage I K(MIN) 4 V REF = V, V K = 18V, T J = 25 C.1 5 n Date: 5/6/4 SPX V Precision djustable Shunt Regulator Copyright 24 Sipex Corporation 2

3 CLCULTION VERGE TEMPERTURE COEFICIENT (TC) ppm % mv V REF T TC in mv / C = V REF (mv) T V REF x 1 ( V REF at 25 C) TC in % / C = T Junction Temperature ( C) V REF x 1 ( V REF at 25 C) 6 TC in ppm / C = T.mV / C.27% / C 27ppm/ C Figure 1. V REF VS Temperature. TEST CIRCUITS V K = V REF V K V K I REF I K R1 IREF I K I K (OFF) (V REF ) R2 Figure 2. Test Circuit for V K = V REF Figure. Test Circuit for V K > V REF Figure 4. Test Circuit for I KOFF TYPICL PERFORMNCE CHRCTERISTICS IK Cathode Current (m) V K = V REF 25 C V K Cathode Voltage (V) High Current Operating Characteristics. IREF-Reference Input Current (n) T -mbient Temperature ( C) Reference Input Current VS mbient Temperature. Date: 5/6/4 SPX V Precision djustable Shunt Regulator Copyright 24 Sipex Corporation

4 TYPICL PERFORMNCE CHRCTERISTICS: Continued VREF-Reference Voltage (V) VK--Cathode Voltage (V) T -mbient Temperature ( C) Ik--cathode Current (m) Reference Voltage VS mbient Temperature. Reference Voltage Load Regulation. DVREF(mV) V K-Cathode Voltage (V) Ikoff Cathode Current (n) Ta mbient Temperature (C) Reference Voltage Line Regulation. Off State Leakage VS mbient Temperature. R V OUT I K Ch1- f P = 1kHz 5Ω Ch2-V K GND Test Circuit for Pulse Response. I K = to 1µ. Date: 5/6/4 SPX V Precision djustable Shunt Regulator Copyright 24 Sipex Corporation 4

5 TYPICL PERFORMNCE CHRCTERISTICS: Continued I K = to µ. I K = to 1m. I K = to 1m. I K = to 5m. I K = to 8m I K = to 1m Date: 5/6/4 SPX V Precision djustable Shunt Regulator Copyright 24 Sipex Corporation 5

6 PCKGE: PIN SOT2 D b B B SEE VIEW C E1 E 1 2 e e1 Gauge Plane L L2 L1 VIEW C PIN SOT-2 JEDEC TO-26 (B) Variation Dimensions in (mm) MIN NOM MX SIDE VIEW Seating Plane C b. -.5 c D b e.95 BSC WITH PLTING e1 1.9 BSC E E c L L1 Ø.54 REF º - 8º BSE METL PIN SOT-2 Date: 5/6/4 SPX V Precision djustable Shunt Regulator Copyright 24 Sipex Corporation 6

7 ORDERING INFORMTION PRT NUMBER CC OUTPUT VOLTGE TOP MRK PCKGES SPX142M....5% V... W1... -Pin SOT-2 SPX142M/TR....5% V... W1... -Pin SOT-2 SPX142M... 1.% V... F2... -Pin SOT-2 SPX142M/TR... 1.% V... F2... -Pin SOT-2 vailable in lead free packaging. To order add -L suffix to part number. Example: SPX142M/TR = standard; SPX142M-L/TR = lead free /TR = Tape and Reel Pack quantity is 25 for SOT-2. Corporation NLOG EXCELLENCE Sipex Corporation Headquarters and Sales Office 2 South Hillview Drive Milpitas, C 955 TEL: (48) FX: (48) Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. Date: 5/6/4 SPX V Precision djustable Shunt Regulator Copyright 24 Sipex Corporation 7