TA76432AFT TOSHIBA | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 11

Technical content

Features

  • Precision reference voltage: VREF = 1.26 V ± 1% (Ta = 25°C)
  • Small temperature coefficient: |αVREF| = 30 ppm/°C (typ.)
  • Adjustable output voltage: VREF ≤ VOUT ≤ 19 V
  • Minimum cathode current for regulation: I kmin = 0.5 mA (max.)
  • Operating temperature: Ta = −40~85°C
  • Packages: UFV (TA76432AFT), PW-MINI (TA76432AF/AFR) and TO-92MOD (TA76432AS)
  • The TA76432AFT is housed in an ultra-thin UFV package. (thickness: 0.7 mm typ.) TA76432AFT TA76432AF/AFR TA76432AS Weight SSOP5-P-0.65C : 0.007 g (typ.) HSOP3-P-1.50 : 0.05 g (typ.) SSIP3-P-1.27 : 0.36 g (typ.)

No. TA76432AF TA76432AFR

1 CATHODE (K) REFERENCE

(REF)

2 ANODE (A) ANODE (A)

3 REFERENCE

(REF) CATHODE (K) Note: TA76432AFvs.TA76432AFR: reverse pin connection. How to Order Product No. Package Type Packing Type and Capacity Minimum Order TA76432AFT (TE85L) UFV (surface-mount type) Embossed tape: 3000/tape 1 tape TA76432AF/AFR On cut tape (TE12L): 100/tape section 100 TA76432AF/AFR (TE12L) PW-MINI (SOT-89) (surface-mount type) Embossed tape: 1000/tape 1 tape TA76432AS Loose in bag: 200/bag 1 bag TA76432AS (TPE6) TO-92MOD (lead type) Radial tape: 2000/tape 1 tape Note: The lead pitch for the TA76432AS and TA76432AS (TPE6) may vary. Functional Block Diagram Circuit Symbol Cathode (K) Reference (REF) Anode (A) 1.26 V Anode (A) Cathode (K) Reference (REF) 1: NC 2: ANODE (A) 3: CATHODE (K) 4: REFERENCE (REF) 5: ANODE (A) 2 A 5 4 1 3 2 1 32 Lot No. (three-digit number) Type marking (two-digit number) Lot No. ⇒ The week of manufacture ⇒ The year of manufacture (last decimal digit of the year of manufacture)

  • TA76432AF: AF
  • TA76432AFR: BF A line indicates lead (Pb)-free package or lead (Pb)-free finish. 1: REFERENCE (REF) 2: ANODE (A) 3: CATHODE (K) Lot No: The last decimal digit of the year of manufacture followed by the month as letters A to L of the alphabet. For example: Jan-2004 is coded as “4A” TA76432AS TA76 3 432AS A line indicates lead (Pb)-free package or lead (Pb)-free finish.

Typical Application Circuits Precautions during Use (1) TA76432AFT, TA76432AF/AFR, TA76432AS These products contain MOS elements . Please take care to avoid gene rating static electricity when handling these devices. (2) TA76432AFT, TA76432AF/AFR, TA76432AS The oscillation frequency of these de vices is determined by the value of the capacitor connected between the anode and the cathode. When establishing maximum operatin g 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 TA76432AFT 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. Absolute 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 μA Reference-anode reverse current −IREF 10 mA TA76432AFT 0.45 (Note 1) TA76432AF/AFR 0.5 Power dissipation TA76432AS PD 0.8 W TA76432AFT 277 (Note 1) TA76432AF/AFR 250 Thermal resistance TA76432AS Rth 156 ºC/W Operating temperature Topr −40∼85 ºC Junction temperature Tj 150 ºC Storage temperature Tstg −55∼150 ºC Note 1: Glass epoxy board mounting: 30 mm × 30 mm × 0.8 mmt (Cu pad area 35 mm2) Note 2: Using continuously under heavy loads (e.g. t he application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum ratings and the operating ranges. Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook (“Handling Precautions”/Derating Concept and Methods) and individual reliability data (i.e. reliability test report and estimated failure rate, etc).

1.26 V Reference (VKA = VREF)

VOUT = 1.26 V VIN Shunt regulator (VKA > VREF) VIN VOUT R1 I R R1 V REF

1 REF ⋅ + ⎟ ⎟

⎜ ⎜ ⎛ + = VOUT R2 VREF

Recommended Operating Conditions Characteristics Symbol Min Typ. Max Unit Cathode voltage VKA V REF ⎯ 19 V Cathode current IK 0.5 ⎯ 15 mA Operating temperature Topr −40 ⎯ 85 °C

Electrical Characteristics

(Unless otherwise specified, Ta = 25°C, IK = 5 mA) Characteristics Symbol Test Condition Min Typ. Max Unit Reference voltage VREF V KA = VREF 1.247 1.26 1.273 V Deviation of reference input voltage over temperature VREF (dev) 0°C < = Ta < = 85°C, VKA = VREF ⎯ 3 15 mV VREF < = VKA < = 5 V ⎯ 0.5 2.5 Ratio of change in reference input voltage to the change in cathode voltage ΔV REF/ΔV 5 V < = VKA < = 19 V ⎯ 0.3 2.0 mV/V Reference input current IREF V KA = VREF ⎯ 2 4 μA Deviation of reference input current over temperature I REF (dev) 0°C < = Ta < = 85°C, VKA = VREF, R1 = 10 kΩ, R2 = ∞ ⎯ 0.3 1.2 μA Minimum cathode current for regulation I Kmin V KA = VREF ⎯ 0.2 0.5 mA Off-state cathode current IKoff V KA = 19 V, VREF = 0 V ⎯ ⎯ 1.0 μA Dynamic impedance ⎪ZKA⎪ VKA = VREF, f < = 1 kHz, 0.5 mA < = IK < = 15 mA ⎯ 0.2 0.5 Ω The deviation parameters VREF (dev) and IREF (dev) are defined as the maximum variation of the V REF and IREF over the rated temperature range. The average temperature coefficient of the V REF is defined as: Application Circuit Example Error amplification circuit for switching power supply 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. () C ppmTa C @25 V 10V V REF 6(dev) REF REF °Δ = α min max VREF (dev) ΔTa VREF Photo- coupler VOUT GND Shunt regulator

Ambient temperature Ta (°C) PDmax – Ta Allowable power dissipation P Dmax (W) Ambient temperature Ta (°C) PDmax – Ta Allowable power dissipation P Dmax (W) 0.6 0.2 0.4 0.8 1.0 1.2 0 20 40 60 100 120 80 140 160 ① Mounted on ceramic substate : 15 × 15 × 0.8 mm t ② Ta = 25°C TA76432AF, AFR Ambient temperature Ta (°C) PDmax – Ta Allowable power dissipation P Dmax (W) 0.6 0.2 0.4 0.8 1.0 0 20 40 60 100 120 80 140 160 TA76432AS Cathode current I K ( m A ) Cathode voltage V KA (V) IK – VKA −10 VKA = VREF Ta = 25°C Input VKA IK 25°C 85°C Ta = −40°C Cathode voltage V KA (V) IK – VKA Cathode current I K ( μA) 200 −100 100 300 25°C 85°C 85°C 25°C Ta = −40°C Ta = −40°C IK min VKA = VREF Ta = 25°C Input V KA IK 0.3 0.1 0.2 0.4 0.5 0.6 0 20 40 60 100 120 80 140 160 Mounted on glass epoxy substate : 30 × 30 × 0.8 mm t Cupper pad area: 35 mm2 TA76432AFT Ambient temperature Ta (°C) VREF – Ta Reference voltage V REF (V) −80 −40 0 40 120 160 80 1.27 1.24 1.25 1.26 1.28 1.29 Input VKA IK VREF VKA = VREF IK = 5 mA

Cathode voltage V KA (V) ΔVREF – VKA Change in reference voltage ΔVREF (mV) −10 5 10 15 20 0 Input VKA IK VREF R2 IK = 5 mA Ta = 25°C Ambient temperature Ta (°C) IREF – Ta Reference current I REF ( μA) 0.0 4.0 1.0 2.0 3.0 −40 0 40 80 120 160 I K = 5 mA Input VKA IK 10kΩ IREF Frequency f (Hz) ZKA – f Dynamic impedance Z KA ( Ω) 10 k 100 k 1 M 1 k 0.3 0.5 0.1 100 eo IK 220 Ω RS GND ei SR ie oe KAZ KAZ SR ie oe KAZSR KAZ KAZSR ie oe = ∴ Ta = 25°C VKA = VREF 0.5 mA ≦ −IK ≦ 15 mA Open loop voltage gain A V (dB) Frequency f (Hz) AV – f

10 M1 M 100 k 1 k

−10 10 k IK = 5 mA Ta = 25°C IK 220 Ω 10 kΩ 10 k Ω 10 μF VIN VOUT GND Voltage swing ( Ｖ) Time t ( μs) Pulse response 1.5 0.5 1.0 0 1 2 3 5 6 4 Input Output Output 220 Ω GND 50 Ω Pulse Generator f = 100 kHz Input monitor

Load capacitance C L ( μF) Stability boundary conditions Cathode current I K ( m A ) Unstable Stable IK CL Ta = 25°C VKA = VREF

TA76432AFT (UFV) Weight: 0.007 g (typ.)

TA76432AF/AFR (PW-MINI) Weight: 0.05 g (typ.)

TA76432AS (TO-92MOD) Weight: 0.36 g (typ.)

RESTRICTIONS ON PRODUCT USE 20070701-EN

  • The information contained herein is subject to change without notice.
  • 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 a nd vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA produc ts, 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 TOSHIB A products specifications. Also, please keep in mind the precautions and conditions set forth in the “Handling Guide for Semiconduct or Devices,” or “TOSHIBA Semiconductor Reliability Handbook” etc.
  • The TOSHIBA products listed in this document are in tended 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 malfuncti on or failure of which may cause loss of human life or bodily injury (“Unintended Usage”). Unintended Usage incl ude atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, et c.. Unintended Usage of TOSHIBA products listed in his document shall be made at the customer’s own risk.
  • The products described in this document shall not be used or embedded to any downstream products of which manufacture, use and/or sale are prohibited under any applicable laws and regulations.
  • The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringement s of patents or other rights of the third parties which may result from its use. No license is granted by implic ation or otherwise under any patents or other rights of TOSHIBA or the third parties.
  • Please contact your sales representative for product- by-product details in this document regarding RoHS compatibility. Please use these products in this document in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances. Toshiba assumes no liability for damage or losses occurring as a result of noncompliance with applicable laws and regulations.