 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| SPX431L Low Voltage Precision Adjustable Shunt Regulator FEATURES * Tight Tolerance.................................................. 0.5% @ 10mA * Wide Operating Range..................................... 1mA to 100mA * Low Extended Temperature Range ....................0C to 105C * Low Temperature Coefficient .................................30 ppm/C * Offered in TO-92, SOT-89, SOT-23-3 and SO-8 * Improved replacement in performance of AS431 & TL431 * Low Cost Solution APPLICATIONS * Battery Operating Equipment * Adjustable Supplies * Switching Power Supplies * Error Amplifiers * Single Supply Amplifier * Monitors/ VCR/ TV * Personal Computers PRODUCT DESCRIPTION The SPX431L is a 3-terminal Adjustable Shunt Voltage Regulator providing a highly accurate bandgap reference. SPX431L acts as an open-loop error amplifier with a 2.5V temperature compensation reference. The SPX431L thermal stability, wide operating current (100mA) and temperature range (0C to 105C) makes it suitable for all variety of applications that are looking for a low cost solution with high performance. The output voltage may be adjusted to any value between VREF and 20V with 2 external resistors. The SPX431L is operating in full industrial temperature range of 0C to 105C. The SPX431L is available in TO-92, SOT-89, SOT-23-3 and SO-8 packages. PIN CONNECTIONS CATHODE (K) 8-Pin Surface Mount (S) TO-92 (N) 1 2 3 CATHODE REFERENCE (R) + 1 2 3 4 8 7 6 5 REF ANODE ANODE N/C REF ANODE ANODE N/C SPX431L - ANODE CATHODE 2.5V Bottom View Top View ANODE (A) SOT-23-3 (M) ANODE 1 SOT-89 (M1) SPX431L 2 N/C 3 CATHODE SPX431L 1 REF 2 3 CATHODE ANODE Top View Top View Rev. 10/30/00 SPX431L ABSOLUTE MAXIMUM RATINGS Parameter Cathode-Anode Reverse Breakdown Anode-Cathode Forward Current Operating Cathode Current Reference Input Current Continuous Power Dissipation at 25C TO-92 SOT-23 SOIC-8 SOT-89 Junction Temperature Storage Temperature Lead Temperature (Soldering 10 sec.) Symbol VKA IAK IKA IREF PD Rating 30 1 150 10 775 200 750 1000 150 -65 to +150 300 Units V A mA mA mW mW mW mW C C C TJ TSTG TL Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS 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 Parameter Cathode Voltage Cathode Current Symbol VKA IK Rating VREF to 20 10 Unit V mA TYPICAL THERMAL RESISTANCE Package Type TO-92 SOT-23 SOIC-8 SOT-89 JA 160C/W 575C/W 175C/W 110C/W JC 80C/W 150C/W 45C/W 8C/W Typical Derating 6.3 mW/C 1.7 mW/C 5.7 mW/C 9.1 mW/C ELECTRICAL CHARACTERISTICS at 25C IK @ 10mA VK=VREF , unless otherwise specified. Parameter Reference Voltage Ratio of Change in VREF to Cathode Voltage Reference Input Current IREF Temp Deviation Min IK for Regulation Off State Leakage Dynamic Output Impedance TC = Test Circuit Symbol VREF VREF VK IREF IREF IK(MIN) IK(OFF) ZKA Test Conditions TA = 25C TC = 1 VREF to 10V 10V to 20V TC = 2 TC = 2 Over Temp. TC = 2 TC = 1 VREF = 0V, VKA = 20V TC = 3 TC = 1 SPX431LA Min Typ 2.490 2.503 -2.7 -2 -1.0 -0.4 0.7 0.4 0.4 0.04 0.15 Max 2.515 Min 2.470 -2.7 -2 SPX431L Typ Max 2.495 2.520 -1.0 -0.4 0.7 0.4 0.4 0.04 0.15 SPX431LC Min Typ Max 2.445 2.495 2.545 -2.7 -2 -1.0 -0.4 0.7 0.4 0.4 0.04 0.15 Unit V mV/V 0.3 4 1.2 1 1 0.5 0.3 4 1.2 1 1 0.5 0.3 4 1.2 1 1 0.5 A A mA A Rev. 10/30/00 SPX431L *CALCULATING AVERAGE TEMPERATURE COEFFICEINT (TC) ppm 0 0 0 VREF T mV % TC in mV/C = VREF (mV) TA -10 5000 0.5 TC in mV/C = ( VREF VREF at 25C TA ) x 100 0 15 30 45 60 75 90 105 TC in ppm/C = ( VREF VREF at 25C TA ) x 106 0.07 mV/C 0.003 %/C 27 ppm/C TEST CIRCUITS VIN VKA = VREF VIN VKA VIN VKA IREF IK R 1 IK IREF IK (OFF) (VREF) R 2 1G-38 1G-39 1G-40 TEST CIRCUIT 1 TEST CIRCUIT 2 TEST CIRCUIT 3 Rev. 10/30/00 SPX431L TYPICAL PERFORMANCE CURVES Low Current Operating Characteristics 900 800 700 VKA = VREF Temperature Range: - 0C to 105 C 150 125 100 VKA = VREF Temperature Range: - 0C to 105 C High Current Operating Characteristics IK - Cathode Current (A) 500 400 300 200 -0 C 100 0 -100 -200 -1.0 0 1.0 2.0 3.0 105 C 25 C IK - Cathode Current (mA) 600 75 50 25 0 -25 -50 -75 -100 -2 -1 0 1 2 3 VKA - Cathode Voltage (V) VKA - Cathode Voltage (V) Figure 3 Figure 2 Off State Leakage 100 VKA = 36V VREF = 0V 2.53 VKA = VREF IK = 10 mA Reference Voltage vs. Ambient Temperature 2.52 IZ off - Off State Cathode Current (nA) 10 2.51 VREF - Reference Voltage (V) 2.50 VREF = 2.500 V at 25 C 2.49 1 2.48 0.1 2.47 2.46 0.01 -60 -30 0 30 60 90 120 2.45 -60 -30 0 30 60 90 120 TA - Ambient Temperature ( C) TA - Ambient Temperature ( C) Figure 4 Figure 5 Rev. 10/30/00 SPX431L TYPICAL PERFORMANCE CURVES Reference Input Current 3.0 R1 = 10 k R2 = IK = 10 mA 2.5 -10 0 Reference Voltage Line Regulation ( IREF - Reference Input Current A) VKA - Cathode Voltage (V) 0 C -20 25 C 75 C -30 105 C -40 2.0 1.5 1.0 0.5 -50 0 3 6 9 12 15 18 21 24 27 30 VKA - Cathode Voltage (V) 0 -60 -30 0 30 60 90 120 Figure 7 TA - Ambient Temperature ( C) Figure 6 Noise Voltage 70 0.150 Low Frequency Dynamic Output Impedance VKA = VREF IKA = 1 to 100 mA f < 1 kHz 60 0.125 ZKA - Dynamic Impedance () 50 0.100 Noise Voltage nV/Hz 40 0.075 30 0.050 20 0.025 10 0.0 -60 -30 0 30 60 90 120 TA - Free Air Temperature 0 10 100 1k 10 k 100 k Figure 9 f - Frequency (Hz) Figure 8 Rev. 10/30/00 SPX431L TYPICAL PERFORMANCE CURVES Dynamic Output Impedance 100 TA = 25 C IK = 1 to 100 mA 10 ZKA - Dynamic Impedance () 1.0 0.1 0.01 1k 10 k 100 k 1M 10 M f - Frequency (Hz) Figure 10 Small Signal Voltage Gain vs. Frequency 70 Temperature Range: -0C to 105 C 60 IK = 10 mA AV - Small Signal Voltage Gain (dB) 50 OUT 40 9 F 30 230 15 k IK 20 8.25 k GND 10 0 1k 10 k 100 k 1M 10 M f - Frequency (Hz) Figure 11 Rev. 10/30/00 SPX431L TYPICAL PERFORMANCE CURVES Pulse Response 6 5 INPUT INPUT MONITOR 220 OUT 4 Input and Output Voltages (V) 3 OUTPUT 50 fP = 100 kHz 2 1 GND 0 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 t - Time (s) Figure 12 Stability Boundary Conditions 100 A: B: C: D: VKA VKA VKA VKA = VREF = 5V at IK = 10 mA = 10V at IK = 10 mA = 15V at IK = 10 mA 90 80 70 C 150 IK - Cathode Current (mA) 60 IK 50 40 STABILITY REGION 30 CL 20 A B D 10 k 10 TA = 25 C 0 10 0 10 1 10 2 10 3 10 4 10 5 10 6 10 7 CL - Load Capacitance (pF) Figure 13 Rev. 10/30/00 SPX431L ORDERING INFORMATION Ordering No. Precision Output Voltage SPX431LM SPX431LAM SPX431LCM SPX431LM1 SPX431LAM1 SPX431LCM SPX431LN SPX431LAN SPX431LCN SPX431LS SPX431LAS SPX431LCS 1% 0.5% 2% 1% 0.5% 2% 1% 0.5% 2% 1% 0.5% 2% 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V Packages 5 Lead SOT-23 5 Lead SOT-23 5 Lead SOT-23 3 Lead SOT-89 3 Lead SOT-89 3 Lead SOT-89 3 Lead TO-92 3 Lead TO-92 3 Lead TO-92 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC Corporation SIGNAL PROCESSING EXCELLENCE Sipex Corporation Headquarters and Main Offices: 22 Linnell Circle Billerica, MA 01821 TEL: (978) 667-8700 FAX: (978) 670-9001 e-mail: sales@sipex.com 233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 935-7600 FAX: (408) 934-7500 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 hereing; neither does it convey any license under its patent rights nor the rights of others. Rev. 10/30/00 |
Price & Availability of SPX431L
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |