TA76432FT/FC/F/FR/S TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA76432FT,TA76432FC,TA76432F,TA76432FR,TA76432S 1.26-V Adjustable High-Precision Shunt Regulators These devices are adjustable high-precision shunt regulators whose output voltage (VKA) can be set arbitrarily using two external resistors. These devices have a precise internal reference voltage of 1.26 V, enabling them to operate at low voltage. These devices are ideal for use as error amplifiers in 3-V switching-regulator systems. In addition, they can be used as zener diodes to perform temperature compensation. TA76432FT Features · Precision reference voltage: VREF = 1.26 V ± 1.4% (Ta = 25°C) · Small temperature coefficient: |αVREF| = 30 ppm/°C (typ.) · Adjustable output voltage: VREF ≤ VOUT ≤ 19 V · Minimum cathode current for regulation: Ikmin = 0.5 mA (max.) · Operating temperature: Ta = −40~85°C · Packages: UFV (TA76432FT), SMV (TA76432FC), PW-MINI (TA76432F/FR) and TO-92MOD (TA76432S) · The TA76432FT is housed in an ultra-thin UFV package. (thickness: 0.7 mm typ.) TA76432FC TA76432F/FR TA76432S Weight SSOP5-P-0.65C SSOP5-P-0.95 HSOP3-P-1.50 SSIP3-P-1.27 1 : 0.007 g (typ.) : 0.014 g (typ.) : 0.05 g (typ.) : 0.36 g (typ.) 2002-07-12 TA76432FT/FC/F/FR/S Pin Assignment/Marking TA76432FT/TA76432FC 5 TA76432F/FR 4 Lot No. 1: NC 2: ANODE (A) 3: CATHODE (K) 4: REFERENCE (REF) 5: ANODE (A) 2F 1 Lot No. (three-digit number) 2 Þ The week of manufacture 3 1 TA76432S 1 TA76 2 432S 3 2 Þ The year of manufacture (last decimal digit of the year of manufacture) 3 Type marking (two-digit number) No. • TA76432F: AU • TA76432FR: BU 1 1: REFERENCE (REF) 2: ANODE (A) 3: CATHODE (K) Lot No: Last decimal digit of the year of manufacture and January to December is denoted by alphabet A to L respectively. For example: Jan-2001 coded to “1A” TA76432F TA76432FR CATHODE (K) REFERENCE (REF) 2 ANODE (A) ANODE (A) 3 REFERENCE (REF) CATHODE (K) Note: TA76432F vs. TA76432FR: reverse pin connection. How to Order Product No. Package Type Packing Type and Capacity Minimum Order UFV TA76432FT (TE85L) Embossed tape: 3000/tape 1 tape Embossed tape: 3000/tape 1 tape (surface-mount type) SMV TA76432FC (TE85L) (surface-mount type) TA76432F/R TA76432F/R (TE12L) PW-MINI (SOT-89) (surface-mount type) On cut tape (TE12L): 100/tape section 100 Embossed tape: 1000/tape 1 tape TA76432S TO-92MOD Loose in bag: 200/bag 1 bag TA76432S (TPE6) (lead type) Radial tape: 2000/tape 1 tape Note: The lead pitch for the TA76432S and TA76432S (TPE6) may vary. Functional Block Diagram Circuit Symbol Cathode (K) Cathode (K) Reference (REF) Reference (REF) 1.26 V Anode (A) Anode (A) 2 2002-07-12 TA76432FT/FC/F/FR/S Typical Application Circuits 1.26 V Reference (VKA = VREF) Shunt regulator (VKA > VREF) VIN VIN VOUT R1 VOUT = 1.26 V R2 VREF æ R ö VOUT = VREF çç1 + 1 ÷÷ + IREF × R1 R è 2ø Precautions during Use (1) TA76432FT, TA76432FC, TA76432F/FR, TA76432S These products contain MOS elements. Please take care to avoid generating static electricity when handling these devices. (2) TA76432FT, TA76432FC, TA76432F/FR, TA76432S The oscillation frequency of these devices is determined by the value of the capacitor connected between the anode and the cathode. When establishing maximum operating condition parameters, please derate the maximum rating values specified in these datasheets so as to allow an operational safety margin. Use of a laminated ceramic capacitor is recommended. (3) Precautions when handling anode pin of TA76432FT/TA76432FC Pin 2 and pin 5 should normally be shorted together. If only pin 5 is used, pin 2 should either be left open or always kept at a lower potential than pin 5. Do not leave pin 5 open and use pin 2 only. Maximum Ratings (Ta = 25°C) Characteristics Symbol Rating Unit Cathode voltage VKA 20 V Cathode current IK 20 mA Cathode-anode reverse current -IK 10 mA Reference voltage VREF 7 V Reference current IREF 50 mA Reference-anode reverse current -IREF 10 mA TA76432FT 0.45 (Note 1) 0.2 TA76432FC Power dissipation PD 0.38 (Note 2) TA76432F/FR 0.5 TA76432S 0.8 TA76432FT W 277 (Note 1) 625 TA76432FC Thermal resistance Rth 328 (Note 2) TA76432F/FR 250 TA76432S 156 ºC/W Topr -40~85 ºC Junction temperature Tj 150 ºC Storage temperature Tstg -55~150 ºC Operating temperature 2 Note 1: Glass epoxy substrate mounting: 30 mm ´ 30 mm ´ 0.8 mmt (Cu pad area 35 mm ) 2 Note 2: Glass epoxy substrate mounting: 30 mm ´ 30 mm ´ 0.8 mmt (Cu pad area 50 mm ) 3 2002-07-12 TA76432FT/FC/F/FR/S Recommended Operating Conditions Characteristics Cathode voltage Cathode current Symbol Min Typ. Max Unit VKA VREF ¾ 19 V 0.5 ¾ 15 mA -40 ¾ 85 °C IK Operating temperature Topr Electrical Characteristics (Unless otherwise specified, Ta = 25°C, IK = 5 mA) Characteristics Symbol Reference voltage Test Condition VREF (dev) Ratio of change in reference input voltage to the change in cathode voltage DVREF/DV Reference Input current IREF Deviation of reference input current over temperature Typ. Max Unit 1.242 1.26 1.278 V 0°C < = Ta < = 85°C, VKA = VREF ¾ 3 15 mV VREF < = VKA < =5V ¾ 0.5 2.5 5V< = VKA < = 19 V ¾ 0.3 2.0 VKA = VREF ¾ 2 4 mA 0°C < = Ta < = 85°C, VKA = VREF, R1 = 10 kW, R2 = ¥ ¾ 0.3 1.2 mA VKA = VREF VREF Deviation of reference input voltage over temperature Min IREF (dev) mV/V Minimum cathode current for regulation IKmin VKA = VREF ¾ 0.2 0.5 mA Off-State cathode current IKoff VKA = 19 V, VREF = 0 V ¾ ¾ 1.0 mA ïZKAï VKA = VREF, f < = 1 kHz, 0.5 mA < = IK < = 15 mA ¾ 0.2 0.5 W Dynamic impedance The deviation parameters VREF (dev) and IREF (dev) are defined as the maximum variation of the VREF and IREF over the rated temperature range. The average temperature coefficient of the VREF is defined as: VREF max 6 æV ç REF (dev) ´ 10 ç V ç REF @25°C aVREF = è DTa VREF (dev) min ö ÷ ÷ ÷ ø ppm °C DTa Application Circuit Example Error amplification circuit for switching power supply Photocoupler VOUT GND Shunt regulator This circuit amplifies the difference between the switching power supply’s secondary output voltage and the shunt regulator’s reference voltage. It then feeds the amplified voltage back to the primary input voltage via the photocoupler. 4 2002-07-12 TA76432FT/FC/F/FR/S PDmax – Ta PDmax – Ta 0.6 TA76432FT Mounted on glass epoxy substate : 30 ´ 30 ´ 0.8 mm t 0.5 Allowable power dissipation PDmax Cupper pad area: 35 mm2 0.4 0.3 0.2 0.1 0 0 20 40 60 80 100 120 140 : 30 ´ 30 ´ 0.8 mm t 0.5 Cupper pad area: 50 mm2 ② Ta = 25°C ① 0.4 0.3 ② 0.2 0.1 0 0 160 ① Mounted on glass epoxy substate TA76432FC (W) (W) Allowable power dissipation PDmax 0.6 20 Ambient temperature Ta (°C) 40 60 PDmax – Ta 120 140 160 140 160 PDmax – Ta 1.0 : 15 ´ 15 ´ 0.8 mm t 1.0 Allowable power dissipation PDmax ② Ta = 25°C 0.8 0.6 0.4 0.2 0 0 TA76432S (W) ① Mounted on ceramic substate TA76432F, FR (W) Allowable power dissipation PDmax 100 Ambient temperature Ta (°C) 1.2 0.8 0.6 0.4 0.2 0 20 40 60 80 100 120 140 160 0 20 Ambient temperature Ta (°C) 40 60 IK – VKA 120 IK – VKA Input VKA (mA) (mA) IK Cathode current VKA = VREF Ta = 25°C 0 85°C VKA 200 VKA = VREF Ta = 25°C 100 85°C 25°C 25°C Ta = -40°C 0 Ta = -40°C 0 Ta = -40°C 25°C -0.5 IK min IK IK 10 IK 100 300 Input -10 -1.0 80 Ambient temperature Ta (°C) 20 Cathode current 80 85°C 0.5 Cathode voltage VKA 1.0 -100 -1.0 1.5 (V) -0.5 0 0.5 Cathode voltage VKA 5 1.0 1.5 (V) 2002-07-12 TA76432FT/FC/F/FR/S DVREF – VKA VREF – Ta (mV) 1.27 1.26 1.25 1.24 -80 -40 0 40 80 120 160 -2 -4 VKA Input -6 IK R1 IK VREF Change in reference voltage DVREF Reference voltage VREF (V) VKA = VREF Input IK = 5 mA 1.28 0 VKA VREF -8 IK = 5 mA R2 1.29 Ta = 25°C -10 0 5 Ambient temperature Ta (°C) 10 Cathode voltage VKA IREF – Ta 100 30 10 Dynamic impedance IK = 5 mA (W) IREF 2.0 1.0 0 220 W eo 50 ZKA 10k9 (mA) Reference current IREF VKA IK 3.0 0.0 -40 40 20 (V) ZKA – f 4.0 Input 15 80 120 IK ei ・ZKA RS + ZKA RS ＞ ZKA eo = ei ei ・ZKA RS e \ZKA = o ・RS ei 5 GND 3 Ta = 25°C VKA = VREF 0.5 mA ≦ -IK ≦ 15 mA 1 0.5 0.3 0.1 1k 160 RS eo = 10 k Ambient temperature Ta (°C) 100 k Frequency f AV – f 1M (Hz) Pulse response 30 0 GND IK = 5 mA Ta = 25°C 20 Input monitor 10 220 W Output Pulse Generator 50 9 40 5 (Ｖ) VIN Input VOUT Voltage swing 10 mF IK 220 9 10 k9 50 10 k9 Open loop voltage gain AV (dB) 60 f = 100 kHz GND 1.5 Output 1.0 0.5 0 0 -10 1k 10 k 100 k Frequency f 1M 10 M 0 (Hz) 1 2 3 4 5 6 Time t (ms) 6 2002-07-12 TA76432FT/FC/F/FR/S Stability boundaty conditions IK 15 CL Cathode current IK (mA) 20 10 Unstable Stable Ta = 25°C VKA = VREF 5 0 0.001 0.003 0.01 0.03 0.1 0.3 Load capacitance CL 7 3 1 5 10 30 100 (mF) 2002-07-12 TA76432FT/FC/F/FR/S Package Dimensions TA76432FT (UFV) Weight: 0.007 g (typ.) 8 2002-07-12 TA76432FT/FC/F/FR/S Package Dimensions TA76432FC (SMV) Weight: 0.014 g (typ.) 9 2002-07-12 TA76432FT/FC/F/FR/S Package Dimensions TA76432F/FR (PW-MINI) Weight: 0.05 g (typ.) 10 2002-07-12 TA76432FT/FC/F/FR/S Package Dimensions TA76432S (TO-92MOD) Weight: 0.36 g (typ.) 11 2002-07-12 TA76432FT/FC/F/FR/S RESTRICTIONS ON PRODUCT USE 000707EBA · TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability Handbook” etc.. · The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer’s own risk. · The products described in this document are subject to the foreign exchange and foreign trade laws. · The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. · The information contained herein is subject to change without notice. 12 2002-07-12