SPX432_04 SIPEX | Alldatasheet
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Date: 12/11/04 SPX432 1.24V Precision Adjustable Shunt Regulator © Co pyright 2004 Sipex Corporation 1.24V Precision Adjustable Shunt Regulator SPX432
DESCRIPTION
FEATURES
■ Low Voltage Operation, 1.24V ■ Trimmed Bandgap to 0.5% and 1% ■ Wide Operating Current, 1mA to 80mA ■ Adjustable Output Voltage, VREF to 18V ■ Extended Temp.Range: 0°C to 105°C ■ Low Temperature Coefficient, 50 ppm/ °C ■ Offered in TO-92, SOIC, SOT-23-3 ■ Replacement for TLV431, AS432 The SPX432 is a 3-terminal adjustable shunt voltage regulator providing a highly accurate 1.24V bandgap reference with 0.5% tolerance. The SPX432’s thermal stability, wide operating current (80mA) and temperature range (0°C to 105°C) makes it suitable for a variety of applications. SPX432 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 manufactures’ assembly lines and contribute a significant cost savings. The SPX432 is an ideal voltage reference in an isolated feedback circuit for switch mode power supplies. SPX432 offers many advantages over the TLV431 such as wider output voltage (18V vs. 6V), higher output current (80mA vs. 15mA) and a wider operating temperature range with a tighter tolerance down to 0.5%. ■ Single Supply Amplifier ■ Monitors / VCRs / TVs ■ Personal Computers ■ Voltage References BLOCK DIAGRAM Cathode (K) 1.24V Refer ence (R) + Anode (A) Now Available in Lead Free Packaging
APPLICATIONS
■ Switching Power Supplies ■ Adjustable Supplies ■ Error Amplifiers Refer to page 11 for other pinouts. SPX432
3 Pin SOT-23
Date: 12/11/04 SPX432 1.24V Precision Adjustable Shunt Regulator © Co pyright 2004 Sipex Corporation ABSOLUTE MAXIMUM RATINGS Continuous Power Dissipation at 25°C PD 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. Electrical characteristics are guaranted over the full junction temperature range (0°C to 105°C). Ambient temperature must be derated based upon power dissipation and package thermal characteristics. Unless otherwise specified, test conditions are: V KA = VREF and IK = 10mA. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX MIN TYP MAX UNITS CIRCUIT SPX432A SPX432 Temperature Deviation V REF 3a 0 < T J < 105°C1 2 2 0 1 22 0 m V Line Regulation V REF 3b V KA = 1.25V to 15V 19 37 19 37 mV Load Regulation V REF 3a I K = 1mA to 80mA 12 30 12 30 mV Reference Input Current I REF 3b 3 6 36 µA Reference Input Current I REF 3b 0 < T J < 105°C, 0.3 0.6 0.3 0.6 µA Temperature Coefficient Minimim Cathode I K(MIN) 3a 0.6 1 0.6 1 mA Current for Regulation Off State Leakage I K(MIN) 3c V REF = 0V, 0.04 500 0.04 500 nA VKA = 18V RECOMMENDED CONDITIONS PARAMETER SYMBOL RATING UNIT Cathode Voltage V KA VREF to 18 V Cathode Current I K 10 mA TYPICAL THERMAL RESISTANCES PACKAGE 0 JA 0JC TYPICAL DERATING TO-92 160 °C/W 80 °C/W 6.3mW/ °C SOT-23 575 °C/W 150 °C/W 1.7 mW/ °C SOIC-8 175 °C/W 45 °C/W 5.7mW/ °C Typical deratings of the thermal resistances are given for ambient temperature >25°C.ELECTRICAL CHARACTERISTICS
Date: 12/11/04 SPX432 1.24V Precision Adjustable Shunt Regulator © Co pyright 2004 Sipex Corporation -2 -1 0 1 2 3 15.0 12.5 10.0 7.5 5.0 2.5 -2.5 -5.0 -7.5 -10.0 VKA Cathode Voltage (V) IK Cathode Current (mA) VKA = VREF 0°C to 105°C TYPICAL PERFORMANCE CHARACTERISTICS 900 800 700 600 500 400 300 200 100 -100 -200 -1.0 0 105 °C 25 °C -0 °C VKA - Cathode Voltage (V) IK - Cathode Current (µA) 1.24 VKA = VREF Temperature Range: 0°C to 105°C High Current Operating Characteristics. V KA = VREF, IKA = 10mA. Low Current Operating Characteristics. V KA = VREF, Sweeping IKA , 25°C. Reference Input Current VS Temperature; IKA = 10mA. Reference Voltage Line Regulation; IKA = 10mA, Sweeping VKA , 25°C. 0.5 1.5 2.5 -60 -30 0 30 60 90 TA-Ambient Temperature (C) IREF-Reference Input Current (uA) 1.235 1.24 1.245 1.25 0.01 0.1 1 10 100 IK--cathode Current (mA) VKA--Cathode Voltage (V) 1.22 1.225 1.23 1.235 1.24 1.245 1.25 -60 -30 0 30 60 90 120 TA-Ambient Temperature (C) VREF-Reference Voltage (V) -50 -40 -30 -20 -10 0369 1 2 15 18 21 VKA-Cathode Voltage (V) dVREF(mV)
Date: 12/11/04 SPX432 1.24V Precision Adjustable Shunt Regulator © Co pyright 2004 Sipex Corporation 10 100 1K 10K 100K f Frequency (Hz) Noise Voltage nV/√Hz VKA = VREF IK = 10mA TA = 25°C -60 -30 0 30 60 90 120 0.150 0.125 0.100 0.075 0.050 0.025 0.0 T A Free Air Temperature ZKA Dynamic Impedance (Ω) VKA = VREF IK = 1 to 80mA f≤1kHz 10 100 1K 10K 100K 1M 10M START 10.000Hz STOP 10 000 000.000Hz REF LEVEL 0.0deg 70.000dB /DIV 45.000deg 10.000dB MARKER 735 PHASE (A/R) MARKER 735 MAG (A/R) 074.781Hz 87.012deg 074.781Hz 0.047dB GAIN PHASE 60dB 50dB 40dB 30dB 20dB 10dB 0dB -10dB -20dB -30dB 215° 180° 135° 90° 45° -45° -90° -135° -180° -215° 70dB Off State Leakage; VKA = 18V, VREF = 0V. Noise Voltage VS Frequency. TYPICAL PERFORMANCE CHARACTERISTICS 10µF 15kΩ 3.03kΩ GND 230 ΩIK VIN VOUT Low Frequency Dinamic Output Impedance VS TAMBIENT . Small Signal Gain and Phase VS Frequency; IK = 10mA, TA = 25°C. Test Circuit for Gain and Phase Frequency Response. 0.0001 0.0010 0.0100 0.1000 1.0000 10.0000 100.0000 1000.0000 -50 0 50 100 150 TA Ambient Temperature (C) IKOFF Cathode Current (nA) 100 0.1 1.0 1k 1 0k 100 k 1 M 0.01 TA =2 5 °C IK =1t o8 0m A ZKA - Dynamic Impedance (Ω) f - Frequency (Hz) 10 M Dynamic Output Impedance TA = 25°C, IKA = 1 to 80mA.
Date: 12/11/04 SPX432 1.24V Precision Adjustable Shunt Regulator © Co pyright 2004 Sipex Corporation IKA = 0 to 100mA. TYPICAL PERFORMANCE CHARACTERISTICS VIN VOUT IKA = 0 to 1mA. VIN VOUT Test Circuit for Pulse Response. GND VIN fP = 100kHz 50 Ω R VOUT IK IKA = 0 to 80mA. VIN VOUT IKA = 0 to 50mA. VIN VOUT IKA = 0 to 10mA. VIN VOUT
Date: 12/11/04 SPX432 1.24V Precision Adjustable Shunt Regulator © Co pyright 2004 Sipex Corporation 0.1% VIN R3 0.1% VOUT VREF SPX432 VIN 0.1% ISINK SPX432 0.1% 0.1% VOUT SPX432 Isolated Feedback VOUTRTN R3 sets feedback gain, C1 provides feedback compensation Opto Isolator TYPICAL PERFORMANCE CHARACTERISTICS Shunt Regulator, VOUT = (1+R1/R2)VREF . Constant Current Sink ISINK = VREF /R1. Reference Amplifier for Isolated Feedback in Off-Line DC-DC Converters. Precision High Current Series Regulator, V OUT = (1+R1/R2)VREF . High Current Shunt Regulator, VOUT = (1+R1/R2)VREF . VIN 0.1% SPX432 0.1% VOUT VIN 0.1% SPX432 0.1% VOUT Single Supply Comparator with Temperature Compensated Threshold, VIN threshold = 1.24V. VCC SPX432 VIN VOUT
Date: 12/11/04 SPX432 1.24V Precision Adjustable Shunt Regulator © Co pyright 2004 Sipex Corporation PACKAGE: 8 PIN NSOIC A A1 A2 SIDE VIEW Seating Plane SECTION B-B WITH PLATING SYMBOL MIN NOM MAX A1 . 3 5 - 1.75 A1 0.1 - 0.25 A2 1.25 - 1.65 b0 . 3 1 - 0.51 c0 . 1 7 - 0.24 D E e L0 . 4 - 1 .27 ø0 º - 8 º ø1 5º - 15º Note: Dimensions in (mm)
8 Pin NSOIC JEDEC MO-012 (AA) Variation
4.90 BSC
6.00 BSC
3.90 BSC
1.27 BSC
1.04 REF
0.25 BSC
L ØØ1 Ø Seating Plane VIEW C TOP VIEW b SEE VIEW C B B E E/2 INDEX AREA (D/2 X E1/2) E1/2 D e c BASE METAL b
Date: 12/11/04 SPX432 1.24V Precision Adjustable Shunt Regulator © Co pyright 2004 Sipex Corporation PACKAGE: 3PIN SOT-23 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 SECTION B-B VIEW A-A Seating Plane Ø SYMBOL MIN NOM MAX A0 . 8 9 - 1.12 A1 0.01 - 0.1 A2 0.88 0.95 1.02 b0 . 3 -0 . 5 c0 . 0 8 - 0 . 2 D2 . 8 2 . 93 . 0 4 e E0 . 9 5 - 2.64 E1 1.2 1.3 1.4 L0 . 4 0 . 50 . 6 ø0 º - 8 º Note: Dimensions in (mm)
3 Pin SOT-23 JEDEC TO-236 (AB) Variation
0.95 BSC
1.90 BSC
0.54 REF
Date: 12/11/04 SPX432 1.24V Precision Adjustable Shunt Regulator © Co pyright 2004 Sipex Corporation PACKAGE: 3PIN TO 92 D W L e1e b A a(2x) E R SYMBOL MIN NOM MAX A 0.17 - 0.195 b 0.014 - 0.02 E 0.13 - 0.155 e 0.95 - 0.105 e1 0.045 - 0.055 L 0.5 - 0.61 R 0.085 - 0.095 S1 0.045 - 0.06 W 0.016 - 0.022 D 0.175 - 0.195 a4 º - 6 º Note: Dimensions in (inches)
3 Pin TO-92
Date: 12/11/04 SPX432 1.24V Precision Adjustable Shunt Regulator © Co pyright 2004 Sipex Corporation 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 ACC OUTPUT VOLTAGE PACKAGES
ORDERING INFORMATION
/TR = Tape and Reel Pack quantity is 2,000 for TO-92 and 2500 for SOT-23 and NSOIC. Available in lead free packaging. To order add "-L" suffix to part number. Example: SPX432AM/TR = standard; SPX432AM-L/TR = lead free PACKAGE PINOUTS SOT-23-3 (M) 321 Top View SPX432 Bottom View TO-92 (N) 13 2 N/C CATHODE ANODE REF Top View SPX432 8-Pin Surface Mount (S) CATHODE REF ANODE ANODE ANODE ANODE N/C CATHODE ANODE REF CLICK HERE TO ORDER SAMPLES