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KA431AZTA
+BOMIC VREF SHUNT ADJ 1% TO92-3
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メーカーオンセミコンダクター社
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メーカー品番 #KA431AZTA
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在庫状況4377
365 日間品質保証
7*24 日間の品質保証
90-時間単位のサービス保証
1日間のアフターサービス保証
仕様
| 属性 | 値 |
| Part Status | Obsolete |
| Base Product Number | KA431 |
| Reference Type | Shunt |
| Output Type | Adjustable |
| Voltage - Output (Min/Fixed) | 2.495V |
| Current - Output | 100 mA |
| Tolerance | ±1% |
| Temperature Coefficient | 50ppm/°C Typical |
| Operating Temperature | -25°C ~ 85°C (TA) |
| Mounting Type | Through Hole |
| Package | TO-226-3, TO-92-3 (TO-226AA) Formed Leads |
| Supplier Device Package | TO-92-3 |
| Packaging | Tape & Box (TB) |
| Voltage - Output (Max) | 36 V |
| Current - Cathode | 1 mA |
概要
Description
KA431AZTA is a three-terminal programmable shunt regulator in the KA431 family (TL431-class). It provides a precise reference and can regulate an output by sinking current through its cathode, using an external resistor divider to set the target voltage.
Key points:
- Three pins: cathode, anode, and reference (REF).
- Reference voltage ~2.495 V. The circuit keeps REF at this level by adjusting the cathode current via the resistor network from the output.
- External divider sets the regulated output voltage; typical operating current is in the milliamp to tens of milliamp range (designs vary—check the datasheet for exact I_K and I_Kmax).
- Characteristics: low dynamic impedance and good temperature stability for a TL431-like reference.
Common uses:
- Feedback/reference element in linear regulators and switch-mode power supplies
- Adjustable precision reference, error amplifier input, or protection circuits
For exact specs (tolerance, I_K range, Z_K, packaging), consult the KA431AZTA datasheet.
Key points:
- Three pins: cathode, anode, and reference (REF).
- Reference voltage ~2.495 V. The circuit keeps REF at this level by adjusting the cathode current via the resistor network from the output.
- External divider sets the regulated output voltage; typical operating current is in the milliamp to tens of milliamp range (designs vary—check the datasheet for exact I_K and I_Kmax).
- Characteristics: low dynamic impedance and good temperature stability for a TL431-like reference.
Common uses:
- Feedback/reference element in linear regulators and switch-mode power supplies
- Adjustable precision reference, error amplifier input, or protection circuits
For exact specs (tolerance, I_K range, Z_K, packaging), consult the KA431AZTA datasheet.
Equivalent
KA431AZTA is a 2.495 V programmable shunt regulator (TL431 family). Equivalents include:
- TL431 / TL431A / TL431B / TL431C
- TLV431
- LM431 / LM431B / LM431C
- LMV431
- NCP431 / NCP431A
- AZ431 (Diodes Inc)
- IL431 (Renesas)
- TL431 / TL431A / TL431B / TL431C
- TLV431
- LM431 / LM431B / LM431C
- LMV431
- NCP431 / NCP431A
- AZ431 (Diodes Inc)
- IL431 (Renesas)
Features
KA431AZTA is a 3‑pin adjustable precision shunt regulator (TL431-compatible).
Key features:
- Reference voltage Vref ≈ 2.495 V (typical)
- Adjustable output via external resistor divider: Vout = Vref(1 + R1/R2) + Iref·R1
- Regulation current range: typically 1 mA to 100 mA (Imax ≈ 100 mA)
- Wide voltage across device up to about 36 V
- Low dynamic impedance; good line and load regulation
- Temperature range: roughly −40°C to +125°C
- Three pins: Anode, Cathode, Reference
- Suitable for precision references, programmable shunt regulation, and voltage feedback in power supplies
Note: exact packaging (AZTA) and some parameters may vary by lot; consult the datasheet for final design values.
Key features:
- Reference voltage Vref ≈ 2.495 V (typical)
- Adjustable output via external resistor divider: Vout = Vref(1 + R1/R2) + Iref·R1
- Regulation current range: typically 1 mA to 100 mA (Imax ≈ 100 mA)
- Wide voltage across device up to about 36 V
- Low dynamic impedance; good line and load regulation
- Temperature range: roughly −40°C to +125°C
- Three pins: Anode, Cathode, Reference
- Suitable for precision references, programmable shunt regulation, and voltage feedback in power supplies
Note: exact packaging (AZTA) and some parameters may vary by lot; consult the datasheet for final design values.
Pinout
- Pin count: 3 pins.
- Function: Adjustable precision shunt regulator (TL431-family). It provides a programmable reference (~2.495 V) and shunts current between cathode and anode to regulate voltage in feedback/regulation circuits. Pins are typically Reference/Adjust (REF/ADJ), Cathode (K), and Anode (A). Exact pin order depends on package—check the datasheet for the specific orientation.
- Function: Adjustable precision shunt regulator (TL431-family). It provides a programmable reference (~2.495 V) and shunts current between cathode and anode to regulate voltage in feedback/regulation circuits. Pins are typically Reference/Adjust (REF/ADJ), Cathode (K), and Anode (A). Exact pin order depends on package—check the datasheet for the specific orientation.
Manufacturer
KA431AZTA is manufactured by KA Semiconductor Co., Ltd. (KA Semiconductor). KA Semiconductor is a semiconductor company that designs and manufactures analog ICs and power-management devices (an integrated device manufacturer).
Application
KA431AZTA is an adjustable precision shunt regulator (TL431-family). Applications:
- Programmable reference / programmable zener in feedback networks
- Error reference for linear and switching power supplies (often with opto-isolator)
- LED driver regulation
- Battery charger regulation
- Voltage reference for precision ADC/DAC circuits
- Overvoltage/current protection in regulator circuits
Typically wired with a resistor divider from output to the REF pin to set the desired output voltage.
- Programmable reference / programmable zener in feedback networks
- Error reference for linear and switching power supplies (often with opto-isolator)
- LED driver regulation
- Battery charger regulation
- Voltage reference for precision ADC/DAC circuits
- Overvoltage/current protection in regulator circuits
Typically wired with a resistor divider from output to the REF pin to set the desired output voltage.
Package
KA431AZTA uses a TO-92 3-pin package (TO-92-3), tape‑and‑reel variant.
