TCA0372DP2 - 1A Dual Power Op Amp | onsemi
MPN： TCA0372DP2 ✓ 啟用中TCA0372DP2 概覽
A power operational amplifier is a high-current linear amplifier that combines the gain and signal handling of a conventional operational amplifier with the ability to source or sink substantial load current. Within the amplifier hierarchy, it belongs to the power-amplifier class rather than the general-purpose low-current op-amp category. Its practical role is to turn a low-level control signal into a high-current drive for motors, solenoids, and other demanding loads.
The TCA0372 family provides two independent amplifier channels, 1.0 A output-current capability per power-amplifier stage, and a 5 V to 40 V operating range. The absence of deadband crossover distortion is particularly useful when driving coils because the output crosses through zero more linearly than a conventional output stage with a dead region. This characteristic can reduce drive dead zone in bidirectional servo and actuator systems.
The monolithic power-amplifier architecture supports relatively demanding loads without requiring a separate external power-transistor stage. Because the device combines amplification and current delivery in one package, the surrounding design must still account for supply decoupling, output-current limits, thermal dissipation, and protection against inductive voltage spikes. Its wide 40 V maximum supply rating provides useful headroom for industrial and automotive-style actuator systems.
Typical applications include servo-amplifier loops, power-supply control stages, relay and solenoid drivers, motor-control systems, and other inductive or high-current loads. The dual-channel configuration can also support two coordinated actuator channels or one control function plus a complementary auxiliary function, subject to the applicable electrical and thermal limits.
For a new design, preserve adequate supply decoupling near the device, verify the continuous and peak current requirements of the connected load, and provide suitable flyback protection for inductive loads. The through-hole PDIP package is straightforward for prototype and legacy industrial assemblies, although a surface-mount power-amplifier option may be preferable for compact production hardware.
This product overview combines the confirmed 1.0 A current, 5 V to 40 V supply range, dual-channel architecture, no-deadband feature, and PDIP-8 format with practical guidance for amplifier selection, PCB implementation, thermal review, and drop-in replacement assessment.
直接替換替代品，適用於 TCA0372DP2 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TCA0372DP2 （相同外形與佔位） — 差異在於 Package.
TCA0372DP1G
✅ 直接替換📋 參考替代品（不在目錄中）
TCA0372DP1
✅ 直接替換聯絡詢價
查看資料表 →TCA0372B
✅ 直接替換📋 參考替代品（不在目錄中）
TCA0372DP2 最大額定值與電氣特性
| Product Type | Dual power operational amplifier |
| Amplifier Channel Count | 2 channels |
| 最大輸出電流 | 1.0 A |
| Supply Voltage Range | 5 V to 40 V |
| Deadband Crossover Distortion | None |
| Architecture | Monolithic power operational amplifier |
| Output Capability | High-current output for coils and inductive loads |
| 封裝 | PDIP-8 |
| 腳位數 | 8 pins |
| 安裝類型 | Through-hole |
| Primary Application | Servo amplifiers and power supplies |
TCA0372DP2 pdip-8 腳位配置指南
TCA0372DP2（pdip-8 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： TCA0372DP2.
請參閱 資料表 以查看完整腳位配置。
典型應用
TCA0372DP2 適用於 6 應用s: Servo Amplifier Control, Solenoid and Relay Drive, Power-Supply Control Stage, Bidirectional Motor Control, Audio and Low-Frequency Power Drive, Industrial Test and Measurement Output.
Servo Amplifier Control
The TCA0372DP2 fits servo-amplifier control loops because each channel combines operational-amplifier signal processing with a 1.0 A power output suitable for high-current actuator drive. Its no-deadband crossover behavior improves the transition around zero, which is valuable in bidirectional servo systems where a dead zone can cause sluggish or uneven response. The 5 V to 40 V supply range also accommodates common industrial actuator rails. Design the feedback network around the applicable gain-bandwidth and stability limits, and place compensation and decoupling close to the device to preserve control-loop behavior.
Solenoid and Relay Drive
The TCA0372DP2 can drive solenoid, relay, and other electromechanical coils when their steady-state and energization currents remain within the amplifier's 1.0 A output capability. Its high-current output stage reduces the need for a separate power transistor, while operation from 5 V to 40 V provides flexibility across industrial supply systems. A flyback diode or other clamp must protect the output from inductive voltage spikes. Because coil resistance changes with temperature, verify both inrush and continuous-load behavior rather than sizing the circuit from nominal current alone.
Power-Supply Control Stage
The TCA0372DP2 is identified by onsemi for power-supply applications, where a high-current operational-amplifier output can provide active feedback or drive an external power stage. Its 1.0 A capability is substantially higher than that of a conventional signal op-amp, while the monolithic construction simplifies the power path. The 5 V to 40 V operating range supports industrial control environments, provided the output-stage dissipation and load-transient requirements remain acceptable. Use stable feedback compensation and adequate supply bypassing, and verify that the power-supply topology remains safe under worst-case load conditions.
Bidirectional Motor Control
The TCA0372DP2 is appropriate for limited bidirectional motor-control stages where the current command requires a high-current linear output and the load remains within 1.0 A. The lack of deadband crossover distortion supports smoother reversal near the zero-command point, while the two amplifier channels can serve coordinated drive or control functions. Motor inductance creates significant voltage stress when current is interrupted, so an appropriate clamp and protection network are essential. Thermal design must account for sustained copper loss in the motor and continuous amplifier dissipation rather than only stall-current duration.
Audio and Low-Frequency Power Drive
The monolithic power operational-amplifier architecture makes the TCA0372DP2 relevant to low-frequency audio and transducer drive stages requiring more current than a conventional op-amp can provide. The 1.0 A output capability can support higher-current speaker, vibration, or acoustic actuators when their impedance and power ratings remain compatible. Its no-deadband characteristic reduces an output crossover artifact around zero, while the broad 5 V to 40 V supply range supports several unipolar amplifier arrangements. Configure feedback and stability for the load impedance, and verify distortion, bandwidth, and thermal performance at the lowest intended load impedance.
Industrial Test and Measurement Output
The TCA0372DP2 can serve as a current-capable output stage in industrial test and measurement equipment that must drive coils, small actuators, or a terminated load while retaining operational-amplifier control. The 1.0 A rating provides useful margin for higher-current loads than a standard dual op-amp can source, and the 5 V to 40 V supply range supports laboratory and industrial bus voltages. The two channels can implement complementary or independent functions. Confirm output swing, slew behavior, load stability, and thermal rise under the intended waveform before using the device as a precision signal source.
工程參考資料，適用於 TCA0372DP2 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TCA0372DP1G | TCA0372DP1 | TCA0372B |
|---|---|---|---|---|
| Brand | onsemi | onsemi | onsemi | onsemi |
| Package | PDIP-8 | PDIP-8 | PDIP-8 | PDIP-8 |
| Product Type | Dual power operational amplifier | Dual power operational amplifier | Dual power operational amplifier | Dual power operational amplifier |
| Amplifier Channel Count | 2 channels | 2 channels | 2 channels | 2 channels |
| Output Current | 1.0 A | 1.0 A | 1.0 A | 1.0 A |
| Primary Applications | Servo amplifiers, power supplies, and inductive-load drive | Servo amplifiers and power supplies | Servo amplifiers and power supplies | Servo amplifiers and power supplies |
主要差異化特點
- High-current output in a dual amplifier (對比TCA0372DP1)
- No-deadband output behavior (對比TCA0372B)
- Wide supply operating range (對比TCA0372DP1G)
設計說明
Calculate power dissipation from the actual output voltage, load current, supply voltage, and duty cycle rather than assuming continuous 1.0 A operation. Estimated: with a 12 V supply, an 8 V output swing, and 1.0 A load, the output-stage dissipation is approximately 4 W before accounting for other losses. Confirm that the ambient temperature, PCB copper, and device thermal rating keep the junction temperature within its specified limit.
Place the required bypass capacitors close to the supply pins and use short, wide traces for output-current paths. Keep high-current return currents from sharing narrow paths with sensitive feedback or input signals. The two amplifier channels should have independent, symmetric routing when they drive separate loads, and feedback components should connect directly to the relevant output pins to minimize parasitic feedback and instability.
Do not treat the 1.0 A output-current rating as unlimited load capability. Check the load's cold resistance, inrush current, stalled current, and duty cycle, and leave thermal margin for elevated ambient temperature. Inductive loads also generate reverse voltage when current is interrupted, so provide an appropriate flyback clamp and verify that its energy rating and placement control voltage excursions at the output pin.
合規資訊
Confirm current RoHS, REACH, halogen-free, conflict-minerals, and automotive qualification declarations for the exact ordering code before production release.