SPX432AM-L

SPX432 ® 1.24V Precision Adjustable Shunt Regulator 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 Refer to page 11 for other pinouts. APPLICATIONS ■ Switching Power Supplies ■ Adjustable Supplies ■ Error Amplifiers ■ ■ ■ ■ Anode 3 SPX432 3 Pin SOT-23 1 Ref 2 Cathode Now Available in Lead Free Packaging Single Supply Amplifier Monitors / VCRs / TVs Personal Computers Voltage References DESCRIPTION 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%. BLOCK DIAGRAM Cathode (K) Reference (R) + 1.24V Anode (A) Date: 12/11/04 SPX432 1.24V Precision Adjustable Shunt Regulator 1 © Copyright 2004 Sipex Corporation Continuous Power Dissipation at 25°C PD TO-92 ..................................................................... 775mW SOT-23 .................................................................. 200 mW SOIC-8 .................................................................... 750mW Junction Temperature TJ ........................................................... 150 °C Storage Temperature TSTG .......................................... -65°C to 150 °C Lead Temperature (Soldering 10 sec.) TL .................................. 300°C ABSOLUTE MAXIMUM RATINGS Cathode-Anode Reverse Breakdown VKA ....................................... 20V Anode-Cathode Forward Current, (25°C. ELECTRICAL CHARACTERISTICS 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: VKA = VREF and IK = 10mA. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX MIN 1.240 1.2462 1.2276 TYP MAX UNITS CIRCUIT SPX432A VREF 3a Temperature Deviation VREF 3a 0 < TJ < 105°C 12 Line Regulation VREF 3b VKA = 1.25V to 15V 19 Load Regulation VREF 3a IK = 1mA to 80mA 12 Reference Input Current IREF 3b 3 6 3 6 µA Reference Input Current Temperature Coefficient IREF 3b 0 < TJ < 105°C, 0.3 0.6 0.3 0.6 µA Minimim Cathode Current for Regulation IK(MIN) 3a 0.6 1 0.6 1 mA Off State Leakage IK(MIN) 3c 0.04 500 0.04 500 nA Date: 12/11/04 1.2338 SPX432 Output Voltage VREF = 0V, VKA = 18V 1.240 1.2524 V 20 12 20 mV 37 19 37 mV 30 12 30 mV SPX432 1.24V Precision Adjustable Shunt Regulator 2 © Copyright 2004 Sipex Corporation CALCULATION AVERAGE TEMPERATURE COEFICIENT (TC) ppm 0 % 0 mV 0 ∆VREF(mV) ∆TA • TC in mV / °C = ∆VREF ∆T • TC in % / °C = -5 5000 ( ∆VREF ∆VREF at 25°C 0 15 30 45 60 75 90 105 x 100 ∆TA 0.5 • TC in ppm / °C = ) ( ∆VREF ∆VREF at 25°C ) x 106 ∆TA Junction Temperature (°C) 0.0033mV /°C 0.0027% / °C 27ppm/°C Figure 1. VREF VS Temperature. TEST CIRCUITS VIN VKA = VREF VIN VIN VKA VKA IK (OFF) IREF IK R1 IREF IK (VREF) R2 Figure 2. Test Circuit for VKA = VREF Date: 12/11/04 Figure 3. Test Circuit for VKA > VREF Figure 4. Test Circuit for IKOFF SPX432 1.24V Precision Adjustable Shunt Regulator 3 © Copyright 2004 Sipex Corporation TYPICAL PERFORMANCE CHARACTERISTICS 15.0 900 12.5 IK Cathode Current (mA) 10.0 = =V VKA REF Temperature Range: 0°C to 105°C 800 VKA = VREF 0°C to 105°C 700 7.5 IK - Cathode Current (µA) 600 5.0 2.5 0 -2.5 -5.0 500 400 105 °C 300 25 °C 200 -0 °C 100 0 -7.5 1.24 -100 -10.0 -2 -1 0 1 2 VKA Cathode Voltage (V) 3 -200 -1.0 0 -0.5 0.25 0.5 0.75 1.0 1.25 1.5 VKA - Cathode Voltage (V) High Current Operating Characteristics. Low Current Operating Characteristics. 3 IREF-Reference Input Current (uA) VREF-Reference Voltage (V) 1.25 1.245 1.24 1.235 1.23 1.225 1.22 -60 -30 0 30 60 90 2.5 2 1.5 1 0.5 0 120 -60 -30 0 TA-Ambient Temperature (C) VKA = VREF, IKA = 10mA. 60 90 Reference Input Current VS Temperature; IKA= 10mA. 1.25 0 -10 1.245 dVREF(mV) VKA--Cathode Voltage (V) 30 TA-Ambient Temperature (C) 1.24 1.235 0.01 -20 -30 -40 -50 0.1 1 10 100 0 3 6 IK--cathode Current (mA) 12 15 18 21 Reference Voltage Line Regulation; IKA = 10mA, Sweeping VKA, 25°C. VKA = VREF, Sweeping IKA, 25°C. Date: 12/11/04 9 VKA-Cathode Voltage (V) SPX432 1.24V Precision Adjustable Shunt Regulator 4 © Copyright 2004 Sipex Corporation TYPICAL PERFORMANCE CHARACTERISTICS 70 Noise Voltage nV/√Hz 1000.0000 IKOFF Cathode Current (nA) 100.0000 10.0000 1.0000 0.1000 60 50 40 30 0.0100 20 0.0010 10 0 10 0.0001 -50 0 50 100 VKA = VREF IK = 10mA TA = 25°C 150 100 TA Ambient Temperature (C) 1K 10K 100K f Frequency (Hz) Noise Voltage VS Frequency. Off State Leakage; VKA = 18V, VREF = 0V. 100 VKA = VREF IK = 1 to 80mA f≤1kHz 0.125 ZKA - Dynamic Impedance (Ω) ZKA Dynamic Impedance (Ω) 0.150 0.100 0.075 0.050 TA = 25 °C IK = 1 to 80 mA 10 1.0 0.1 0.025 0.0 0.01 1k -60 -30 0 30 60 90 10 k 120 TA Free Air Temperature Low Frequency Dinamic Output Impedance VS TAMBIENT. REF LEVEL 0.0deg 70.000dB /DIV 45.000deg 10.000dB MARKER 735 PHASE (A/R) MARKER 735 MAG (A/R) 100 k 1M 10 M f - Frequency (Hz) Dynamic Output Impedance TA= 25°C, IKA = 1 to 80mA. 074.781Hz 87.012deg 074.781Hz 0.047dB 70dB 215° 60dB VOUT 180° PHASE 50dB 135° 40dB 90° 30dB 45° 15kΩ IK 230 Ω 10µF 20dB 0° 10dB -45° 0dB -90° VIN 3.03kΩ GND GAIN -10dB -135° -20dB -180° -30dB 10 100 START 10.000Hz 1K 10K 100K 1M -215° 10M STOP 10 000 000.000Hz Small Signal Gain and Phase VS Frequency; IK = 10mA, TA = 25°C. Date: 12/11/04 Test Circuit for Gain and Phase Frequency Response. SPX432 1.24V Precision Adjustable Shunt Regulator 5 © Copyright 2004 Sipex Corporation TYPICAL PERFORMANCE CHARACTERISTICS VIN VIN VOUT VOUT IKA = 0 to 10mA. IKA = 0 to 1mA. VIN VIN VOUT VOUT IKA = 0 to 50mA. IKA = 0 to 80mA. VIN VIN R VOUT IK VOUT fP = 100kHz 50Ω GND Test Circuit for Pulse Response. IKA = 0 to 100mA. Date: 12/11/04 SPX432 1.24V Precision Adjustable Shunt Regulator 6 © Copyright 2004 Sipex Corporation TYPICAL PERFORMANCE CHARACTERISTICS R3 VIN VIN VOUT ISINK R2 Q1 R1 0.1% VREF SPX432 SPX432 R2 0.1% R1 0.1% Constant Current Sink ISINK = VREF/R1. Shunt Regulator, VOUT = (1+R1/R2)VREF. VOUT VIN R3 R5 R1 0.1% Opto Isolator R4 R3 sets feedback gain, C1 provides feedback compensation Isolated Feedback C1 C1 C2 R3 R1 0.1% VOUT SPX432 + R2 0.1% SPX432 R2 0.1% VOUTRTN Reference Amplifier for Isolated Feedback in Off-Line DC-DC Converters. VIN Precision High Current Series Regulator, VOUT = (1+R1/R2)VREF. VOUT R1 0.1% VCC R3 R2 R2 0.1% Q1 VIN R1 VOUT SPX432 SPX432 Single Supply Comparator with Temperature Compensated Threshold, VIN threshold = 1.24V. High Current Shunt Regulator, VOUT = (1+R1/R2)VREF. Date: 12/11/04 SPX432 1.24V Precision Adjustable Shunt Regulator 7 © Copyright 2004 Sipex Corporation PACKAGE: 8 PIN NSOIC D Ø e E/2 L2 E1/2 E1 E Seating Plane L1 1 Ø L Ø1 Gauge Plane VIEW C b INDEX AREA (D/2 X E1/2) TOP VIEW A1 A Seating Plane A2 8 Pin NSOIC JEDEC MO-012 (AA) Variation MIN NOM MAX SYMBOL A 1.35 1.75 A1 0.1 0.25 A2 1.25 1.65 b 0.31 0.51 c 0.17 0.24 D 4.90 BSC E 6.00 BSC E1 3.90 BSC e 1.27 BSC L 0.4 1.27 L1 1.04 REF L2 0.25 BSC ø 0º 8º ø1 5º 15º SIDE VIEW B B SEE VIEW C b c Note: Dimensions in (mm) BASE METAL SECTION B-B WITH PLATING Date: 12/11/04 SPX432 1.24V Precision Adjustable Shunt Regulator 8 © Copyright 2004 Sipex Corporation PACKAGE: 3PIN SOT-23 D b B 3 B E1 1 SEE VIEW C E VIEW A-A 2 e Gauge Plane e1 Seating Plane L Ø L1 VIEW C A A2 A Seating Plane 3 Pin SOT-23 SYMBOL A A1 A2 b c D e e1 E E1 L L1 ø JEDEC TO-236 (AB) Variation MIN NOM MAX 0.89 1.12 0.01 0.1 0.88 0.95 1.02 0.3 0.5 0.08 0.2 2.8 2.9 3.04 0.95 BSC 1.90 BSC 0.95 2.64 1.2 1.3 1.4 0.4 0.5 0.6 0.54 REF 0º 8º A SIDE VIEW b WITH PLATING c Note: Dimensions in (mm) Date: 12/11/04 C A1 BASE METAL SECTION B-B SPX432 1.24V Precision Adjustable Shunt Regulator 9 © Copyright 2004 Sipex Corporation PACKAGE: 3PIN TO 92 L e1 e W D A b S1 SYMBOL A b E e e1 L R S1 W D a 3 Pin TO-92 MIN NOM 0.17 0.014 0.13 0.95 0.045 0.5 0.085 0.045 0.016 0.175 4º - MAX 0.195 0.02 0.155 0.105 0.055 0.61 0.095 0.06 0.022 0.195 6º R E Note: Dimensions in (inches) Date: 12/11/04 a(2x) SPX432 1.24V Precision Adjustable Shunt Regulator 10 © Copyright 2004 Sipex Corporation PACKAGE PINOUTS TO-92 (N) SOT-23-3 (M) 8-Pin Surface Mount (S) ANODE 1 CATHODE 1 ANODE 2 8 2 3 REF SPX432 ANODE 3 N/C 4 SPX432 7 ANODE 1 6 ANODE REF 5 N/C 2 3 CATHODE REF ANODE CATHODE Bottom View Top View Top View ORDERING INFORMATION PART NUMBER SPX432AM .......................... SPX432AM/TR .................... SPX432AS .......................... SPX432AS/TR ..................... SPX432AN .......................... SPX432AN/TR .................... ACC OUTPUT VOLTAGE PACKAGES 0.5% .............. 1.24V .................................. 3-Pin SOT-23 0.5% .............. 1.24V .................................. 3-Pin SOT-23 0.5% .............. 1.24V ................................... 8-Pin NSOIC 0.5% .............. 1.24V ................................... 8-Pin NSOIC 0.5% .............. 1.24V .................................... 3-Pin TO-92 0.5% .............. 1.24V .................................... 3-Pin TO-92 SPX432M ............................ SPX432M/TR ...................... SPX432S ............................. SPX432S/TR ....................... SPX432N ............................. SPX432N/TR ....................... 1.0% .............. 1.24V .................................. 3-Pin SOT-23 1.0% .............. 1.24V .................................. 3-Pin SOT-23 1.0% .............. 1.24V ................................... 8-Pin NSOIC 1.0% .............. 1.24V ................................... 8-Pin NSOIC 1.0% .............. 1.24V .................................... 3-Pin TO-92 1.0% .............. 1.24V .................................... 3-Pin TO-92 Available in lead free packaging. To order add "-L" suffix to part number. Example: SPX432AM/TR = standard; SPX432AM-L/TR = lead free /TR = Tape and Reel Pack quantity is 2,000 for TO-92 and 2500 for SOT-23 and NSOIC. CLICK HERE TO ORDER SAMPLES Corporation ANALOG EXCELLENCE Sipex Corporation Headquarters and Sales Office 233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600 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: 12/11/04 SPX432 1.24V Precision Adjustable Shunt Regulator 11 © Copyright 2004 Sipex Corporation