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Texas Instruments ALM2402QPWPRQ1
- Part No.:
- ALM2402QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ALM2402QPWPRQ1.pdf
- Description:
- IC POWER 2 CIRCUIT 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:707
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Product details
Overview
ALM2402QPWPRQ1 from Texas Instruments is a dual high-voltage, high-current operational amplifier optimized for driving low-impedance and high-ESR capacitive loads in automotive systems. It delivers 400 mA continuous output current per channel, operates from 5.0 V to 16 V supply, features over-temperature shutdown, separate output-stage supplies (VCC_O1/VCC_O2), and rail-to-rail output swing. It is used in resolver excitation, IGBT gate driving, and tracking LDOs where robust fault tolerance and thermal resilience are required.
For engineers reviewing the ALM2402QPWPRQ1 datasheet, ALM2402QPWPRQ1 pinout, ALM2402QPWPRQ1 application, or ALM2402QPWPRQ1 equivalent, key selection considerations include its dual-channel 400 mA drive capability, independent output supply pins for Voh control, OTF/SH_DN bidirectional thermal flag/shutdown, AEC-Q100 Grade 1 qualification (–40°C to 125°C ambient), and stability with up to 3 µF capacitive loads.
Technical Context
The ALM2402QPWPRQ1 integrates two independent high-current op-amp channels, each with a discrete PMOS/NMOS power boost buffer enabling rail-to-rail output swing and 400 mA continuous sourcing/sinking. Its architecture separates gain-stage supply (VCC) from output-stage supplies (VCC_O1/VCC_O2), allowing independent voltage setting to limit power dissipation and adjust Voh.
Each channel includes internal current limiting (750 mA short-to-ground, 550 mA short-to-supply), over-temperature detection with active-low OTF/SH_DN flag, and EMI-rejecting input filtering. The device uses a class-AB common-source output stage with integrated reverse diodes for inductive flyback protection and is qualified to AEC-Q100 Grade 1 with HBM ±2000 V and CDM ±750 V (DRR package).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 400 mA continuous per channel - enables direct driving of power-FET gates, solenoids, and resolver windings without external buffers. |
| Supply Range | VCC: 4.5–16 V; VCC_OX: 3–16 V - supports flexible rail assignment to limit die power dissipation and optimize Voh. |
| Operating Temp | –40°C to +125°C ambient - meets AEC-Q100 Grade 1 for under-hood automotive applications. |
| Thermal Resistance | θJA = 39.2°C/W (DRR package) - enables high-current operation with minimal die temperature rise when thermally pad is grounded. |
| Capacitive Load Stability | Stable with up to 3 µF - eliminates need for isolation resistors in cable shield or supercapacitor buffering applications. |
| Input Offset Voltage | 1 mV (typ) - ensures precision in closed-loop sensing and reference buffering without trimming. |
| Gain Bandwidth | 600 kHz - sufficient for DC-coupled motor control loops and analog tracking regulators. |
Pinout & Package
The ALM2402QPWPRQ1 is housed in a 12-pin 3.00 mm × 3.00 mm SON (DRR) package with an exposed thermal pad that must be connected to PCB ground for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1+, IN2+ | Non-inverting input | Differential input terminals for each op-amp channel; support common-mode range from 0.2 V to VCC–1.2 V. |
| IN1–, IN2– | Inverting input | Feedback and signal inversion inputs; include internal zener clamps for ±7 V overvoltage tolerance. |
| OUT1, OUT2 | Amplifier output | Rail-to-rail outputs capable of 400 mA sourcing/sinking; include internal PMOS/NMOS reverse diodes for flyback protection. |
| VCC_O1, VCC_O2 | Output-stage supply | Independent supplies for each output driver - adjusting these limits Voh and controls on-die power dissipation. |
| VCC | Gain-stage supply | Powers internal OTA, protection logic, and EMI filter; decoupling required near pin. |
| GND (Pins 6, 12) | Ground reference | Both pins must be connected together on PCB; thermal pad must also connect to GND plane. |
| OTF/SH_DN | Bidirectional flag/shutdown | Pulled high to enable operation; goes low on over-temperature or VCC_OX = 0 V; forces shutdown when driven low. |
Key Features
| Feature | Design Value |
|---|---|
| High-current dual output | 400 mA per channel continuous - eliminates need for external discrete drivers in valve, motor, and gate-drive circuits. |
| Separate output supply pins | VCC_O1/VCC_O2 allow independent voltage setting - enables precise Voh control and reduces junction temperature during high-load operation. |
| Over-temperature protection | Active-low OTF/SH_DN flag triggers at 157–175°C - provides system-level fault signaling and automatic recovery without external circuitry. |
| EMI rejection filter | Integrated RF/EMI input filter with EMIRR > 60 dB across 10–1000 MHz - maintains dc accuracy in noisy automotive environments (e.g., near ignition systems). |
| AEC-Q100 Grade 1 | Qualified from –40°C to +125°C ambient - validated for engine control units, transmission modules, and ADAS sensor interfaces. |
Applications
| Resolver Excitation | IGBT Gate Driving |
|---|---|
Use Scenario: Generating precise sinusoidal excitation signals for resolver position sensors in electric power steering and traction inverters. IC Role / Device Role / Timing Role: Dual-channel op-amp providing differential 1–10 kHz sine/cosine outputs with matched amplitude and phase; drives ~100 Ω resolver windings directly. Use Value: Eliminates external buffer stages and matching networks; 400 mA drive ensures full-scale excitation even at low battery voltages (6–8 V). | Use Scenario: Driving high-side and low-side IGBT gates in motor control inverters with fast switching and fault tolerance. IC Role / Device Role / Timing Role: High-current buffer amplifying PWM signals to deliver fast turn-on/turn-off gate charge while surviving shoot-through and Miller plateaus. Use Value: Internal current limiting (750 mA/550 mA) and thermal shutdown prevent latch-up during short-circuit events; rail-to-rail swing ensures full gate voltage swing. |
| Tracking LDO Reference Buffer | Solenoid & Valve Control |
Use Scenario: Buffering and amplifying reference voltages for adjustable linear regulators in battery management systems. IC Role / Device Role / Timing Role: Precision unity-gain buffer with 1 mV offset and low drift - maintains tight output regulation despite load transients and temperature variation. Use Value: Stable with 1–3 µF output capacitance; eliminates need for external compensation, reducing BOM count and layout area. | Use Scenario: Directly driving 12 V automotive solenoids and proportional valves requiring analog current control. IC Role / Device Role / Timing Role: Current-output amplifier configured as transconductance stage - converts DAC voltage to precise 0–400 mA coil current. Use Value: Built-in short-circuit protection and thermal flag enable safe open-loop control; reverse diodes absorb inductive kickback without snubbers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSC2002QPWRQ1 | Single-channel, 350 mA output, no separate VCC_OX pins, lower PSRR (55 dB) | Lacks dual-channel redundancy and independent output supply control - unsuitable for resolver or dual-gate drive. | Select only for space-constrained single-channel applications where 400 mA and VCC_OX flexibility are not required. |
| LM7332QMA/NOPB | Dual-channel, 60 mA output, rail-to-rail I/O, no thermal flag or current limiting | No fault protection or high-current capability - requires external current boost and thermal monitoring circuitry. | Choose only for low-power signal conditioning where ALM2402QPWPRQ1's drive strength and protection are unnecessary. |
Compared with TSC2002QPWRQ1 and LM7332QMA/NOPB, the ALM2402QPWPRQ1 uniquely combines dual 400 mA outputs, programmable VCC_OX supplies, integrated thermal flag, and AEC-Q100 Grade 1 qualification - making it the only option for automotive-grade, self-protected, high-current analog output stages.
Availability
ALM2402QPWPRQ1 is available at Aetrix Electronics and suitable for resolver excitation, IGBT gate driving, and solenoid control requiring stable component supply across automotive production lifecycles.
Supply support for ALM2402QPWPRQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in automotive, industrial, and power management ICs.
The ALM2402QPWPRQ1 belongs to TI's automotive-qualified high-current op-amp product line, designed specifically for fault-tolerant analog output stages in harsh-environment applications such as electric power steering, transmission control, and battery management.
FAQ
What is the maximum continuous output current per channel for the ALM2402QPWPRQ1?
The ALM2402QPWPRQ1 delivers 400 mA continuous output current per channel under recommended operating conditions (TA ≤ 125°C, proper thermal pad connection). This rating applies to both sourcing and sinking, and is verified across the full –40°C to +125°C ambient temperature range. Peak currents may exceed this value briefly due to internal propagation delay, but sustained operation above 400 mA risks triggering current limiting or thermal shutdown.
How does the OTF/SH_DN pin function in the ALM2402QPWPRQ1?
The OTF/SH_DN pin on the ALM2402QPWPRQ1 is a bidirectional signal that serves dual roles: when pulled low (< 0.35 V), it places both op-amps into a low-Iq shutdown state; when left floating or pulled high (> 1.0 V), it enables normal operation. During over-temperature events (junction > 157–175°C), the pin is actively driven low to signal fault condition and disable outputs. The ALM2402QPWPRQ1 resumes operation automatically once die temperature falls below hysteresis threshold.
Can the ALM2402QPWPRQ1 drive a 3 µF capacitive load without oscillation?
Yes, the ALM2402QPWPRQ1 is explicitly characterized and guaranteed stable with capacitive loads up to 3 µF, as confirmed in the datasheet's "Stable with Large Capacitive Loads" feature and Typical Characteristics section. This stability holds across supply voltages (5 V to 12 V) and temperatures (–40°C to +125°C), eliminating the need for series isolation resistors in applications like cable shielding or supercapacitor buffering.
What is the purpose of separate VCC_O1 and VCC_O2 pins on the ALM2402QPWPRQ1?
The VCC_O1 and VCC_O2 pins on the ALM2402QPWPRQ1 supply power exclusively to the output-stage PMOS/NMOS transistors - independent of the gain-stage supply (VCC). This separation allows designers to reduce VCC_OX below VCC to limit maximum output voltage (Voh), thereby controlling on-die power dissipation and preventing thermal runaway during high-current operation. It also enables asymmetric rail configurations for specialized analog output requirements.
Is the ALM2402QPWPRQ1 qualified for automotive use?
Yes, the ALM2402QPWPRQ1 is AEC-Q100 qualified for automotive applications, meeting Grade 1 requirements (–40°C to +125°C ambient operating temperature). It also achieves HBM ±2000 V and CDM ±750 V ESD ratings, and includes integrated over-temperature shutdown, current limiting, and EMI rejection - all validated per automotive reliability standards for use in engine control, transmission, and ADAS subsystems.
ALM2402QPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Power
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.17V/µs
- Gain Bandwidth Product:
- 600 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1.5 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 5mA (x2 Channels)
- Current - Output / Channel:
- 400 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-HTSSOP
ALM2402QPWPRQ1 FAQ
1.How can I place an order for ALM2402QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ALM2402QPWPRQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ALM2402QPWPRQ1 reliable?
The price and inventory of ALM2402QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ALM2402QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for ALM2402QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ALM2402QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ALM2402QPWPRQ1?
ALM2402QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ALM2402QPWPRQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ALM2402QPWPRQ1?
For technical support, including ALM2402QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ALM2402QPWPRQ1 requirements.
6.How does Aetrix verify that ALM2402QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All ALM2402QPWPRQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ALM2402QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of ALM2402QPWPRQ1?
All ALM2402QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ALM2402QPWPRQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ALM2402QPWPRQ1 part is unused and in its original packaging.
Return procedure for ALM2402QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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