SPX431L_04 SIPEX | Alldatasheet
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Date: 5/25/04 SPX431L Precision Adjustable Shunt Regulator © Copyright 200 4 Sipex Corporation5 Precision Adjustable Shunt Regulator SPX431L
DESCRIPTION
FEATURES
■ Tight Voltage Tolerance 0.5% at 10mA ■ Wide Operating Current 1mA to 100mA ■ Extended Temperature Range: 0°C to 105°C ■ Low Temperature Coefficient 30 ppm/ °C ■ Improved Replacement in Performance for TL431 and AS431 ■ Low Cost Solution The SPX431L is a 3-terminal adjustable shunt voltage regulator providing a highly accurate bandgap reference. The SPX431L acts as an open-loop error amplifier with a 2.5V temperature compensation reference. The SPX431L ’s thermal stability, wide operating current (100mA) and temperature range (0°C to 105°C) makes it suitable for a variety of applications that require a low cost, high performance solution. SPX431L tolerance of 0.5% is proven to be sufficient to overcome all of the other errors in the system to virtually eliminate the need for trimming in the power supply manufacturer's assembly line and contribute a significant cost savings. The output voltage may be adjusted to any value between V REF and 20V with two external resistors. The SPX431L is available in TO-92, SOIC-8, SOT -89, and SOT -23-3 packages. ■ Error Amplifiers ■ Single Supply Amplifier ■ Monitors / VCRs / TVs ■ Personal Computers BLOCK DIAGRAM 2.5V Reference (R) Anode (A) Cathode (K)
APPLICATIONS
■ Battery Operating Equipment ■ Adjustable Supplies ■ Switching Power Supplies SPX431L
3 Pin SOT-23
Now Available in Lead Free Packaging
Date: 5/25/04 SPX431L Precision Adjustable Shunt Regulator © Copyright 200 4 Sipex Corporation5 ABSOLUTE MAXIMUM RATINGS Continuos Power Dissipation at 25°C PD NOTE: 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 condi- tions for extended periods may affect reliability. RECOMMENDED CONDITIONS PARAMETER SYMBOL RATING UNIT Cathode Voltage V KA VREF to 20 V Cathode Current I K 10 mA TYPICAL THERMAL RESISTANCES PACKAGE 0JA 0JC TYPICAL DERATING TO-92 160 °C/W 80 °C/W 6.3 mW/ °C SOT-23 575 °C/W 150 °C/W 1.7 mW/ °C SOIC-8 175 °C/W 45 °C/W 5.7 mW/ °C SOT-89 110 °C/W 8 °C/W 9.1 mW/ °C Typical deratings of the thermal resistances are given for ambient temperature >25 °. Electrical characteristics at 25°C IK = 10mA V K = VREF , unless otherwise specified. PARAMETER SYMBOL FIGURE CONDITIONS MIN TYP MAX UNITS SPX431LA Reference Voltage V REF 2 2.490 2.503 2.515 V ∆VREF withTemp.* TC 2 0.07 0.20 mV/ °C Ratio of Change in V REF ∆ VREF 3V REF to 10V -2.7 -1.0 mV/V to Cathode Voltage ∆VK 10V to 20V -2.0 -0.4 0.3 Reference Input Current I REF 3 0.7 4.0 µA IREF Temp Deviation ∆IREF 3T J = 0°C to 105°C 0.4 1.2 µA Min IK for Regulation I K(MIN) 2 0.4 1.0 mA Off State Leakage I K(OFF) 4V REF = 0V, VKA = 20V 0.04 1.0 µA Dynamic Output Z KA 2ƒ z ≤ 1kHz 0.15 0.5 Ω Impedance I K = 1 to 100mA SPX431L Reference Voltage V REF 2 2.470 2.495 2.520 V ∆VREF withTemp.* TC 2 0.07 0.20 mV/ °C Ratio of Change in V REF ∆ VREF 3V REF to 10V -2.7 -1.0 mV/V to Cathode Voltage ∆VK 10V to 20V -2.0 -0.4 0.3 Reference Input Current I REF 3 0.7 4.0 µA IREF Temp Deviation ∆IREF 3T J = 0°C to 105°C 0.4 1.2 µA Min IK for Regulation I K(MIN) 2 0.4 1.0 mA Off State Leakage I K(OFF) 4V REF = 0V, VKA = 20V 0.04 1.0 µA Dynamic Output Z KA 2ƒ z ≤ 1kHz 0.15 0.5 Ω Impedance I K = 1 to 100mA
ELECTRICAL CHARACTERISTICS
Date: 5/25/04 SPX431L Precision Adjustable Shunt Regulator © Copyright 200 4 Sipex Corporation5 PARAMETER SYMBOL FIGURE CONDITIONS MIN TYP MAX UNITS SPX431LC Reference Voltage V REF 2 2.445 2.495 2.545 V ∆VREF withTemp.* TC 2 0.07 0.20 mV/ °C Ratio of Change in V REF ∆ VREF 3V REF to 10V -2.7 -1.0 mV/V to Cathode Voltage ∆VK 10V to 20V -2.0 -0.4 0.3 Reference Input Current I REF 3 0.7 4.0 µA IREF Temp Deviation ∆IREF 3T J = 0°C to 105°C 0.4 1.2 µA Min IK for Regulation I K(MIN) 2 0.4 1.0 mA Off State Leakage I K(OFF) 4V REF = 0V, VKA = 16V 0.04 1.0 µA Dynamic Output Z KA 2ƒ z ≤ 1kHz 0.15 0.5 Ω Impedance I K = 1 to 100mA ∆VREF 01 5 3 04 56 07 59 0 1 0 5 -10 0.55000 000 0.07 mV/°C 0.003 %/°C 27 ppm/°C ppm % mV Junction Temperature (°C)
- TC in ppm/°C =
- TC in %/°C =
- TC in mV/°C = ∆VREF (mV) ∆TA (∆VREF at 25°C) ∆TA ∆VREF x 100 (∆VREF at 25°C) ∆TA ∆VREF x 106 CALCULATING AVERAGE TEMPERATURE COEFFICIENT (TC)
Figure 1. VREF VS Temperature. Operating Range (TJ) = 0°C to 105°C. Electrical characteristics at 25°C IK = 10mA V K = VREF , unless otherwise specified.
Date: 5/25/04 SPX431L Precision Adjustable Shunt Regulator © Copyright 200 4 Sipex Corporation5 PINOUTS Bottom View TO-92 (N) 13 2 N/C CATHODE ANODE REF Top View 8-Pin SOIC (S) CATHODE REF ANODE ANODE ANODE ANODE N/C SOT-23-3 (M) Top View Top View SOT-89 (M1) 1 2 3 REF ANODE CATHODE ANODE CATHODEREF SEE VIEW C Ø 1.65 DIMENSIONS Minimum/Maximum (mm)
8 Pin NSOIC
(JEDEC MS-012, AA - VARIATION) COMMON HEIGHT DIMENSION A b c L e E 1.35
4.90 BSC
0.40 0.31 0.51 SYMBOL MIN NOM MAX 0.10 - 0.25 D 1.75 1.25 0.17 0.25
6.00 BSC
3.90 BSC
1.27 BSC
1.27
1.04 REF
0.25 BSC
15º A A2 SEATING PLANE SIDE VIEW L ØØ1 Seating Plane Gauge Plane VIEW C TOP VIEW e E E/2 A INDEX AREA (D/2 X E1/2) E1/2 D b
8 PIN NSOICPACKAGE:
c WITH PLATING BASE METAL b CONTACT AREA PACKAGE: 8 PIN NSOIC
Date: 5/25/04 SPX431L Precision Adjustable Shunt Regulator © Copyright 200 4 Sipex Corporation5 A A2 A1 SIDE VIEW A A Seating Plane C c WITH PLATING BASE METAL b EE1 e D b 1 2 L Gauge Plane VIEW C SEE VIEW C B B 0.89 - 1.12 0.01 - 0.10 Dimensions in (mm)3 PIN SOT-23 JEDEC TO-236 (AB) Variation 0.88 0.95 1.02 0.30 - 0.50 0.08 - 0.20 0.40 0.50 0.60
0.54 REF
0º - 8º A b c D E L Ø MIN NOM MAX 2.80 2.90 3.04 2.10 - 2.64 1.20 1.30 1.40 e
0.95 BSC
1.90 BSC
Ø PACKAGE: 3 PIN SOT-23
Date: 5/25/04 SPX431L Precision Adjustable Shunt Regulator © Copyright 200 4 Sipex Corporation5 HE e D 1 2 1.40 1.50 1.60 Dimensions in (mm)
3 PIN SOT-89
0.36 0.42 0.48 4.40 4.50 4.60 A C D H E L MIN NOM MAX 1.40 1.60 1.75 3.94 - 4.25 e Ø1.0 C 5º(2x) bb 1 b Ro.15 8º(2x)b 0.41 0.47 0.53 0.38 0.40 0.43 1.45 1.50 1.55 2.90 3.00 3.10 2.40 2.50 2.60 0.80 - 1.20 L PACKAGE: 3 PIN SOT-89
Date: 5/25/04 SPX431L Precision Adjustable Shunt Regulator © Copyright 200 4 Sipex Corporation5 D W L e1e b A a(2x) E R DIMENSIONS IN INCHES3 PIN TO-92 A b E e W R L .170 .016 .095 .105 SYMBOL MIN NOM MAX .014 - .020 .195 .130 .045 .055 0.022 .175 .195 .500 .610 - .085 .095 .045 .060 D a .155
3 PIN TO-92
PACKAGE: 3 PIN TO-92
Date: 5/25/04 SPX431L Precision Adjustable Shunt Regulator © Copyright 200 4 Sipex Corporation5 Corporation ANALOG EXCELLENCE Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability aris ing out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor t he rights of others. Sipex Corporation Headquarters and Sales Office
233 South Hillview Drive
Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600 PART NUMBER ACCURACY OUTPUT VOLTAGE PACKAGES
ORDERING INFORMATION
Available in lead free packaging. To order add “-L” suffix to part number. Example: SPX431LM/TR = standard; SPX431LM-L/TR = lead free /TR = Tape and Reel Pack quantity is 2,000 for TO-92, 2,500 for SOT-89, SOT-23, and SOT-23.