HA17431 Series Shunt Regulator Description The HA17431 series is a family of voltage referenced shunt regulators. The main application of these products is in voltage regulators that provide a variable output voltage. The HA17431 series products are provided in a wide range of packages; TO-92 and TO-92MOD insertion mounting packages and MPAK-5, UPAK, and FP-8D surface mounting packages are available. The on-chip high-precision reference voltage source can provide ±1% accuracy in the V versions, which have a VKA max of 16 volts. The HA17431VLP, which is provided in the MPAK-5 package, is designed for use in switching mode power supplies. It provides a built-in photocoupler bypass resistor for the PS pin, and an error amplifier can be easily constructed on the supply side. Features • • • • The V versions provide 2.500 V ±1% at Ta = 25°C The HA17431VLP includes a photocoupler bypass resistor (2 kΩ) The reference voltage has a low temperature coefficient The MPAK-5 and UPAK miniature packages are optimal for use on high mounting density circuit boards • A wide operating temperature range (–40 to +85°C) is provided by the TO-92, TO-92MOD, and FP-8D package versions Block Diagram K PS* 2kΩ REF + − 2.500V A Note: * The PS pin is only provided by the HA17431VLP. HA17431 Series Application Circuit Example Switching power supply secondary-side error amplification circuit Vout R R1 + K – PS 2kΩ REF A R2 GND HA17431VLP Ordering Information Version Item V Version A Version Normal Version Package Temp. Range –40 to +85°C Reference Accuracy ±1% (at 25°C) ±2.2% ±4% voltage Max 2.525 V 2.550 V 2.595 V Typ 2.500 V 2.495 V 2.495 V Min 2.475 V 2.440 V 2.395 V Cathode voltage 16 V max 40 V max 40 V max Cathode current 50 mA max 150 mA max 150 mA max Wide temperature use HA17431VPJ HA17431PNAJ TO-92 HA17431PAJ TO-92MOD HA17431PJ HA17431FPAJ FP-8D HA17431FPJ 2 TO-92MOD FP-8D HA17431 Series Ordering Information (cont) Version Item V Version Industrial use HA17431VLP HA17431VP Normal Version A Version Temp. Range MPAK-5 –20 to +85°C HA17431PNA TO-92 HA17431UPA UPAK HA17432UPA UPAK HA17431PA TO-92MOD HA17431P TO-92MOD HA17431FPA FP-8D HA17431FP Commercial use Package FP-8D HA17431UA UPAK HA17432UA UPAK Pin Arrangement NC 5 1 A PS 2 4 3 REF A K 1 REF 2 3 A K UPAK (HA17431UA/UPA) MPAK-5 REF NC 8 7 A 6 1 2 3 A REF UPAK (HA17432UA/UPA) K NC 5 Face Face 1 1 K 2 3 4 NC NC NC FP-8D 2 3 REF A K TO-92 1 2 3 REF A K TO-92MOD 3 HA17431 Series Absolute Maximum Ratings (Ta = 25°C) Item Symbol HA17431VLP HA17431VP HA17431VPJ Unit Notes Cathode voltage VKA 16 16 16 V 1 PS term. voltage VPS VKA to 16 — — V 1, 2, 3 Continuous cathode current IK –50 to +50 –50 to +50 –50 to +50 mA Reference input current Iref –0.05 to +10 –0.05 to +10 –0.05 to +10 mA 4 PT 150 * Operating temperature range Topr –20 to +85 –20 to +85 –40 to +85 °C Storage temperature Tstg –55 to +150 –55 to +150 –55 to +150 °C Item Symbol HA17431P/PA HA17431FP/FPA HA17431UA/UPA Unit Notes Cathode voltage VKA 40 40 40 V 1 Continuous cathode current IK –100 to +150 –100 to +150 –100 to +150 mA Reference input current Iref –0.05 to +10 –0.05 to +10 –0.05 to +10 mA 7 800 * 8 mW PT 800 * Operating temperature range Topr –20 to +85 –20 to +85 –20 to +85 °C Storage temperature Tstg –55 to +150 –55 to +125 –55 to +150 °C Item Symbol HA17431PJ/PAJ HA17431FPJ/FPAJ Unit Notes Cathode voltage VKA 40 40 V 1 Continuous cathode current IK –100 to +150 –100 to +150 mA Reference input current Iref –0.05 to +10 –0.05 to +10 mA Power dissipation PT 800 * Operating temperature range Topr –40 to +85 –40 to +85 °C Storage temperature Tstg –55 to +150 –55 to +125 °C 4 500 * 7 mW 4, 5 Power dissipation 6 500 * 500 * 5 Power dissipation 6 500 * 5 mW 6, 7, 8 6, 7 HA17431 Series Item Symbol HA17432UA/UPA HA17431PNA HA17431PNAJ Unit Cathode voltage VKA 40 40 40 V Continuous cathode current IK –100 to +150 –100 to +150 -100 to +150 mA Reference input current Iref –0.05 to +10 –0.05 to +10 -0.05 to +10 mA 8 Power dissipation PT 800 * Operating temperature range Topr –20 to +85 Storage temperature Tstg –55 to +150 500 * 5 5 500* mW –20 to +85 -40 to +85 °C –55 to +150 -55 to +150 °C Notes Notes: 1. Voltages are referenced to anode. 2. The PS pin is only provided by the HA17431VLP. 3. The PS pin voltage must not fall below the cathode voltage. If the PS pin is not used, the PS pin is recommended to be connected with the cathode. 4. Ta ≤ 25°C. If Ta > 25°C, derate by 1.2 mW/°C. 5. Ta ≤ 25°C. If Ta > 25°C, derate by 4.0 mW/°C. 6. Ta ≤ 25°C. If Ta > 25°C, derate by 6.4 mW/°C. 7. 50 mm × 50 mm × t1.5mm glass epoxy board, Ta ≤ 25°C. If Ta > 25°C, derate by 5 mW/°C. 8. 15 mm × 25 mm × t0.7mm alumina ceramic board,Ta ≤ 25°C. If Ta > 25°C, derate by 6.4 mW/°C. 5 HA17431 Series Electrical Characteristics (Ta = 25°C) HA17431VLP/VP/VPJ (Ta = 25°C, IK = 10 mA) Item Symbol Min Typ Max Unit Test Conditions Reference voltage Vref 2.475 2.500 2.525 V VKA = Vref Reference voltage temperature deviation Vref(dev) — 10 — mV VKA = Vref, Ta = –20°C to +85°C Reference voltage temperature coefficient ∆Vref/∆Ta — ±30 — ppm/°C VKA = Vref, 0°C to 50°C gradient Reference voltage regulation ∆Vref/∆VKA — 2.0 3.7 mV/V VKA = Vref to 16 V Reference input current Iref — 2 6 µA R1 = 10 kΩ, R2 = ∞ Reference current temperature deviation Iref(dev) — 0.5 — µA R1 = 10 kΩ, R2 = ∞, Ta = –20°C to +85°C Minimum cathode current Imin — 0.4 1.0 mA VKA = Vref Off state cathode current Ioff — 0.001 1.0 µA VKA = 16 V, Vref = 0 V Dynamic impedance ZKA — 0.2 0.5 Ω VKA = Vref, I K = 1 mA to 50 mA Bypass resistance RPS 1.6 2.0 2.4 kΩ I PS = 1 mA 3 Bypass resistance temperature coefficient ∆RPS/∆Ta — +2000 — ppm/°C I PS = 1 mA, 0°C to 50°C gradient 3 6 Notes 1 2 HA17431 Series HA17431PJ/PAJ/FPJ/FPAJ/P/PA/UA/UPA/FP/FPA/PNA/PNAJ, HA17432UA/UPA (Ta = 25°C, I K = 10 mA) Item Symbol Min Typ Max Unit Test Conditions Notes Reference voltage Vref 2.440 2.495 2.550 V VKA = Vref A 2.395 2.495 2.595 — 11 (30) — 5 (17) — 1.4 3.7 — 1 2.2 Reference voltage temperature deviation Reference voltage Vref(dev) ∆Vref/∆VKA regulation Normal mV mV/V VKA = Vref Ta = –20°C to +85°C 1, 4 Ta = 0°C to +70°C 1, 4 VKA = Vref to 10 V VKA = 10 V to 40 V Reference input current Iref — 3.8 6 µA R1 = 10 kΩ, R2 = ∞ Reference current temperature deviation Iref(dev) — 0.5 (2.5) µA R1 = 10 kΩ, R2 = ∞, Ta = 0°C to +70°C 4 Minimum cathode current Imin — 0.4 1.0 mA VKA = Vref 2 Off state cathode current Ioff — 0.001 1.0 µA VKA = 40 V, Vref = 0 V Dynamic impedance ZKA — 0.2 0.5 Ω VKA = Vref, I K = 1 mA to 100 mA Notes: 1. Vref(dev) = Vref(max) – Vref(min) Vref(max) Vref(dev) Vref(min) Ta Min Ta Max 2. Imin is given by the cathode current at Vref = Vref(IK=10mA) – 15 mV. 3. RPS is only provided in HA17431VLP. 4. The maximum value is a design value (not measured). 7 HA17431 Series MPAK-5 and UPAK Marking Patterns The marking patterns shown below are used on MPAK-5 and UPAK products. Note that the product code and mark pattern are different. The pattern is laser-printed. HA17431VLP NC (1) (2) 4 P (a) (b) REF HA17431UA HA17431UPA HA17432UA HA17432UPA PS A (4) REF (c) 4 A (1) (2) REF A K A Band mark 4 B (1) (2) K A A Band mark K K (3) (4) (5) (3) (4) 4 C (1) (2) K A A Band mark Band mark REF REF (3) (4) F (2) A A (5) 4 (1) (5) (3) (4) (5) Notes: 1. Boxes (1) to (5) in the figures show the position of the letters or numerals, and are not actually marked on the package. 2. The letters (1) and (2) show the product specific mark pattern. Product (1) (2) HA17431VLP 4 P HA17431UA 4 A HA17431UPA 4 B HA17432UA 4 C HA17432UPA 4 F 3. The letter (3) shows the production year code (the last digit of the year) for UPAK products. 4. The bars (a), (b) and (c) show a production year code for MPAK-5 products as shown below. After 2005 the code is repeated every 8 years. Year 1997 1998 1999 2000 2001 2002 2003 2004 (a) Bar Bar Bar Bar None None None None (b) None None Bar Bar None None Bar Bar (c) None Bar None Bar None Bar None Bar 5. The letter (4) shows the production month code (see table below). Production month Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec. Marked code A B C D E F G H J K L M 6. The letter (5) shows manufacturing code. For UPAK products. 8 HA17431 Series Characteristics Curves HA17431VLP/VP/VPJ VK=Vref IK=10mA 2.550 2.525 K 2.500 REF IK V Vref A 2.475 2.450 2.425 –20 0 20 40 60 80 85 Ambient temperature Ta (°C) Cathode Current vs. Cathode Voltage Characteristics 1 1.0 VK=Vref VK=Vref 0.5 0 Cathode Current vs. Cathode Voltage Characteristics 2 50 Cathode current IK (mA) Cathode current IK (mA) Reference voltage Vref (V) Reference Voltage Temperature Characteristics 2.575 0 1 2 3 4 Cathode voltage VK (V) 5 1V/DIV 0 –50 0 –5 0 Cathode voltage VK (V) 5 1V/DIV 9 HA17431 Series Dynamic impedance ZKA (Ω) Dynamic Impedance vs. Frequency Characteristics 100 10 K 1 IK REF io V VK A 0.1 iO = 2 mAP-P 0.01 100 ZKA= 1k 10k 100k VK (Ω) iO 1M Frequency f (Hz) 0 ∅ 50 GVOL –180 0 Phase delay ∅ (degrees) Open loop voltage gain GVOL (dB) Open Loop Voltage Gain, Phase vs. Frequency Characteristics IK=10mA 15kΩ 10µF – + K REF Vi A 8.2kΩ –360 G = 20log 100 1k 10k 100k Frequency f (Hz) 10 220Ω Vo 1M 10M Vo (dB) Vi HA17431 Series HA17431PJ/PAJ/FPJ/FPAJ/P/PA/UA/UPA/FP/FPA/PNA/PNAJ, HA17432UA/UPA 100 Oscillation region Stable region VCC 50 CL 0 0.0001 0.001 0.01 0.1 1.0 2.0 Load capacitance CL (µF) 40 φ 30 90 20 220 Ω 15 kΩ 10 µF 10 Vin 0 10 Phase φ (degrees) Open loop voltage gain GVOL (dB) Open Loop Voltage Gain, Phase vs. Frequency Characteristics (1) (With no feedback capacitance) 60 GV IK = 10 mA 50 0 180 Vout GND 8.2 kΩ 100 1k 10 k 100 k Frequency f (Hz) Open Loop Voltage Gain, Phase vs. Frequency Characteristics (2) (When a feedback capacitance (Cf) is provided) IK = 5 mA 10 Gυ Gυ 180 Cf = 0.022 µF 5 φ Cf = 0.22 µF 0 200 µF Cf 2.4 kΩ Vin —4 10 50 Ω 270 2k + Vout — 20 V Phase φ (degrees) 8 7.5 kΩ Open loop voltage gain GVOL (dB) Cathode current IK (mA) Oscillation Stability vs. Load Capacitance between Anode and Cathode 1.5 150 360 GND 100 1k 10 k Frequency f (Hz) 11 HA17431 Series Reference voltage pin Input current Iref (µA) Reference Voltage Pin Input Current vs. Cathode Voltage Characteristics 2.5 2.0 1.5 1.0 IK = 10 mA 0.5 0 5 10 15 20 25 30 35 40 Cathode voltage VK (V) Reference Voltage Temperature Characteristics 2.50 VKA = Vref IK = 10 mA 2.49 Pulse Response Input/Output voltage VI (V) 5 Reference voltage Vref (V) INPUT (P.G) 4 3 OUTPUT (Vout) 2 50 Ω 220 Ω Vout 1 GND 2.48 2.47 2.46 2.45 P.G f = 100 kHz 0 1 2 3 4 Time t (µs) 12 5 6 2.44 –20 0 20 40 60 Ambient temperature Ta (°C) 80 85 Reference Voltage Pin Input Current Temperature Characteristics 3 Cathode Current vs. Cathode Voltage Characteristics (1) 150 R1 = 10 kΩ R2 = ∞ IK = 10 mA 2.5 120 100 Cathode current IK (mA) Reference voltage pin input current Iref (µA) HA17431 Series 2 1.5 1 80 60 40 20 0 –20 VK = Vref Ta = 25°C –40 0.5 –60 –80 0 –20 0 20 40 60 –100 80 85 –2 Ambient temperature Ta (°C) Cathode current when off state Ioff (nA) Cathode current IK (mA) VKA = Vref Ta = 25°C 0.8 0.6 Imin 0.4 0.2 0 1 2 Cathode voltage VK (V) 0 1 2 3 Cathode Current Temperature Characteristics when Off State 2 Cathode Current vs. Cathode Voltage Characteristics (2) 1.2 1.0 –1 Cathode voltage VK (V) 3 VKA = 40 V Vref = 0 1.5 1 0.5 –20 0 20 40 60 80 85 Ambient temperature Ta (°C) 13 HA17431 Series Application Examples As shown in the figure on the right, this IC operates as an inverting amplifier, with the REF pin as input pin. The open-loop voltage gain is given by the reciprocal of “reference voltage deviation by cathode voltage change” in the electrical specifications, and is approximately 50 to 60 dB. The REF pin has a high input impedance, with an input current Iref of 3.8 µA Typ (V version: Iref = 2 µA Typ). The output impedance of the output pin K (cathode) is defined as dynamic impedance Z KA , and ZKA is low (0.2 Ω) over a wide cathode current range. A (anode) is used at the minimum potential, such as ground. K REF – + VCC OUT VEE VZ ≅ 2.5V A Figure 1 Operation Diagram Application Hints No. Application Example 1 Reference voltage generation circuit Vin Description Vout R K Output is fixed at Vout ≅ 2.5 V. CL REF A GND 2 GND Variable output shunt regulator circuit Vin Vout R Iref R1 K REF CL A R2 GND 14 This is the simplest reference voltage circuit. The value of the resistance R is set so that cathode current IK ≥ 1 mA. GND The external capacitor CL (CL ≥ 3.3 µF) is used to prevent oscillation in normal applications. This is circuit 1 above with variable output provided. Here, Vout ≅ 2.5 V × (R1 + R2) R2 Since the reference input current Iref = 3.8 µA Typ (V version: Iref = 2 µA Typ) flows through R 1, resistance values are chosen to allow the resultant voltage drop to be ignored. HA17431 Series Application Hints (cont) No. Application Example Description 3 Single power supply inverting comparator circuit This is an inverting type comparator with an input threshold voltage of approximately 2.5 V. Rin is the REF pin protection resistance, with a value of several kΩ to several tens of kΩ. VCC RL Rin K Vout RL is the load resistance, selected so that the cathode current IK ≥ 1 mA when Vout is low. GND Condition Vin C1 Less then 2.5 V C2 2.5 V or more VCC This is an AC amplifier with voltage gain G = –R1 / (R2//R3). The input is cut by capacitance Cin, so that the REF pin is driven by the AC input signal, centered on 2.5 V DC. Vin REF A GND 4 AC amplifier circuit Cf RL R1 R2 also functions as a resistance that determines the DC cathode potential when there is no input, but if the input level is low and there is no risk of Vout clipping to VCC, this can be omitted. Vout K Cin R3 Vin REF IC Vout OFF VCC (VOH) Approx. 2 V (VOL) ON A To change the frequency characteristic, Cf should be connected as indicated by the dotted line. R2 GND Gain G = R1 (DC gain) R2 // R3 1 2π Cf (R1 // R2 // R3) Cutoff frequency fc = 5 Switching power supply error amplification circuit This circuit performs control on the secondary side of a transformer, and is often used with a switching power supply that employs a photocoupler for offlining. + V R4 + LED R3 – R1 (Note) Secondary side GND The output voltage (between V+ and V–) is given by the following formula: Vout ≅ 2.5 V × (R1 + R2) R2 In this circuit, the gain with respect to the Vout error is as follows: Cf R2 – V Note: LED : Light emitting diode in photocoupler R3 : Bypass resistor to feed IK(>Imin) when LED current vanishes R4 : LED protection resistance G= R2 × HA17431 open × photocoupler total gain (R1 + R2) loop gain As stated earlier, the HA17431 open-loop gain is 50 to 60 dB. 15 HA17431 Series Application Hints (cont) No. Application Example Description 6 Constant voltage regulator circuit This is a 3-pin regulator with a discrete configuration, in which the output voltage VCC R1 Vout = 2.5 V × Q Vout R2 Cf GND Discharge type constant current circuit This circuit supplies a constant current of VCC IL ≅ R Q 2.5 V RS Load GND IL + R Load VCC IL – Q 2.5 V 16 [A] into the load. Caution is required The requirement in this circuit is that the cathode current must be greater than Imin = 1 mA. The IL setting therefore must be on the order of several mA or more. – Induction type constant current circuit GND 2.5 V RS since the HA17431 cathode current is also superimposed on IL. + 8 R1 is a bias resistance for supplying the HA17431 cathode current and the output transistor Q base current. R3 GND 7 (R2 + R3) R3 RS In this circuit, the load is connected on the collector side of transistor Q in circuit 7 above. In this case, the load floats from GND, but the HA17431 cathode current is not superimposed on IL, so that IL can be kept small (1 mA or less is possible). The constant current value is the same as for circuit 7 above: IL ≅ 2.5 V RS [A] HA17431 Series Design Guide for AC-DC SMPS (Switching Mode Power Supply) Use of Shunt Regulator in Transformer Secondary Side Control This example is applicable to both forward transformers and flyback transformers. A shunt regulator is used on the secondary side as an error amplifier, and feedback to the primary side is provided via a photocoupler. Transformer R1 SBD PWM IC HA17384 HA17385 IF IB VF Phototransistor Photocoupler C1 K HA17431 (+) Output V0 (–) Vref VK Light emitting diode R3 R2 R5 R4 REF A GND Figure 2 Typical Shunt Regulator/Error Amplifier Determination of External Constants for the Shunt Regulator DC characteristic determination: In figure 2, R1 and R2 are protection resistor for the light emitting diode in the photocoupler, and R2 is a bypass resistor to feed IK minimum, and these are determined as shown below. The photocoupler specification should be obtained separately from the manufacturer. Using the parameters in figure 2, the following formulas are obtained: R1 = V0 – VF – VK V , R2 = F IF + IB IB VK is the HA17431 operating voltage, and is set at around 3 V, taking into account a margin for fluctuation. R 2 is the current shunt resistance for the light emitting diode, in which a bias current I B of around 1/5 IF flows. Next, the output voltage can be determined by R3 and R4, and the following formula is obtained: V0 = R3 + R4 × Vref, Vref = 2.5 V Typ R4 The absolute values of R3 and R4 are determined by the HA17431 reference input current Iref and the AC characteristics described in the next section. The Iref value is around 3.8 µA Typ. (V version: 2 µA Typ) 17 HA17431 Series AC characteristic determination: This refers to the determination of the gain frequency characteristic of the shunt regulator as an error amplifier. Taking the configuration in figure 2, the error amplifier characteristic is as shown in figure 3. Gain G (dB) G1 G2 f1 fAC f2 When R5 ≠ 0 When R5 = 0 fOSC Frequency f (Hz) * fOSC : PWM switching frequency Figure 3 HA17431 Error Amplification Characteristic In Figure 3, the following formulas are obtained: Gain G1 = G0 ≈ 50 dB to 60 dB (determined by shunt regulator) G2 = R5 R3 Corner frequencies f 1 = 1/(2π C1 G 0 R3) f 2 = 1/(2π C1 R5) G0 is the shunt regulator open-loop gain; this is given by the reciprocal of the reference voltage fluctuation ∆Vref/∆VKA, and is approximately 50 dB. 18 HA17431 Series Practical Example Consider the example of a photocoupler, with an internal light emitting diode VF = 1.05 V and I F = 2.5 mA, power supply output voltage V2 = 5 V, and bias resistance R2 current of approximately 1/5 IF at 0.5 mA. If the shunt regulator VK = 3 V, the following values are found. R1 = 5V – 1.05V – 3V = 316(Ω) (330Ω from E24 series) 2.5mA + 0.5mA R2 = 1.05V = 2.1(kΩ) (2.2kΩ from E24 series) 0.5mA Next, assume that R3 = R4 = 10 kΩ. This gives a 5 V output. If R5 = 3.3 kΩ and C1 = 0.022 µF, the following values are found. G2 = 3.3 kΩ / 10 kΩ = 0.33 times (–10 dB) f 1 = 1 / (2 × π × 0.022 µF × 316 × 10 kΩ) = 2.3 (Hz) f 2 = 1 / (2 × π × 0.022 µF × 3.3 kΩ) = 2.2 (kHz) 19 HA17431 Series Package Dimensions Unit: mm 1.9 ± 0.2 0.95 0.16 + 0.1 – 0.05 0 – 0.1 2.8 + 0.2 – 0.3 + 0.2 0.6 1.6 – 0.1 0.6 0.95 + 0.1 5 – 0.4 – 0.05 + 0.2 1.1 – 0.1 0.3 2.9 ± 0.2 Hitachi Code JEDEC EIAJ Mass (reference value) MPAK-5 — — 0.015 g Unit: mm 1.5 1.5 3.0 0.44 Max Hitachi Code JEDEC EIAJ Mass (reference value) 20 (0.2) (2.5) (1.5) (0.4) 0.53 Max 0.48 Max 1.5 ± 0.1 0.44 Max 2.5 ± 0.1 4.25 Max φ1 0.8 Min 1.8 Max 0.4 4.5 ± 0.1 UPAK — Conforms 0.050 g HA17431 Series Unit: mm 4.85 4.4 5.25 Max 5 8 1 0.75 Max *0.22 ± 0.05 0.20 ± 0.04 2.03 Max 4 0.25 6.50 +– 0.15 1.05 1.27 *0.42 ± 0.08 0.40 ± 0.06 0.10 ± 0.10 0° – 8° 0.25 0.60 +– 0.18 0.15 0.12 M *Dimension including the plating thickness Base material dimension Hitachi Code JEDEC EIAJ Mass (reference value) FP-8D — Conforms 0.10 g 21 HA17431 Series Unit: mm 4.8 ± 0.3 0.7 0.60 Max 0.5 ± 0.1 12.7 Min 2.3 Max 5.0 ± 0.2 3.8 ± 0.3 0.5 1.27 2.54 Hitachi Code JEDEC EIAJ Mass (reference value) 22 TO-92 (1) Conforms Conforms 0.25 g HA17431 Series Unit: mm 4.8 ± 0.3 2.3 Max 0.65 ± 0.1 0.75 Max 0.7 0.60 Max 0.5 ± 0.1 10.1 Min 8.0 ± 0.5 3.8 ± 0.3 0.5 1.27 2.54 Hitachi Code JEDEC EIAJ Mass (reference value) TO-92 Mod — Conforms 0.35 g 23 HA17431 Series Cautions 1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent, copyright, trademark, or other intellectual property rights for information contained in this document. Hitachi bears no responsibility for problems that may arise with third party’s rights, including intellectual property rights, in connection with use of the information contained in this document. 2. Products and product specifications may be subject to change without notice. Confirm that you have received the latest product standards or specifications before final design, purchase or use. 3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However, contact Hitachi’s sales office before using the product in an application that demands especially high quality and reliability or where its failure or malfunction may directly threaten human life or cause risk of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation, traffic, safety equipment or medical equipment for life support. 4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product. 5. This product is not designed to be radiation resistant. 6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi. 7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor products. Hitachi, Ltd. Semiconductor & Integrated Circuits. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Tel: Tokyo (03) 3270-2111 Fax: (03) 3270-5109 URL NorthAmerica : http:semiconductor.hitachi.com/ Europe : http://www.hitachi-eu.com/hel/ecg Asia (Singapore) : http://www.has.hitachi.com.sg/grp3/sicd/index.htm Asia (Taiwan) : http://www.hitachi.com.tw/E/Product/SICD_Frame.htm Asia (HongKong) : http://www.hitachi.com.hk/eng/bo/grp3/index.htm Japan : http://www.hitachi.co.jp/Sicd/indx.htm For further information write to: Hitachi Semiconductor (America) Inc. 179 East Tasman Drive, San Jose,CA 95134 Tel: <1> (408) 433-1990 Fax: <1>(408) 433-0223 Hitachi Europe GmbH Electronic components Group Dornacher Straβe 3 D-85622 Feldkirchen, Munich Germany Tel: <49> (89) 9 9180-0 Fax: <49> (89) 9 29 30 00 Hitachi Europe Ltd. Electronic Components Group. Whitebrook Park Lower Cookham Road Maidenhead Berkshire SL6 8YA, United Kingdom Tel: <44> (1628) 585000 Fax: <44> (1628) 778322 Hitachi Asia Pte. Ltd. 16 Collyer Quay #20-00 Hitachi Tower Singapore 049318 Tel: 535-2100 Fax: 535-1533 Hitachi Asia Ltd. Taipei Branch Office 3F, Hung Kuo Building. No.167, Tun-Hwa North Road, Taipei (105) Tel: <886> (2) 2718-3666 Fax: <886> (2) 2718-8180 Hitachi Asia (Hong Kong) Ltd. Group III (Electronic Components) 7/F., North Tower, World Finance Centre, Harbour City, Canton Road, Tsim Sha Tsui, Kowloon, Hong Kong Tel: <852> (2) 735 9218 Fax: <852> (2) 730 0281 Telex: 40815 HITEC HX Copyright ' Hitachi, Ltd., 1998. All rights reserved. Printed in Japan. 24