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Texas Instruments TPIC2603NE
- Part No.:
- TPIC2603NE
- Manufacturer:
- Texas Instruments
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
TPIC2603NE.pdf
- Description:
- IC PWR DRIVER 1:6 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,869
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Product details
Overview
TPIC2603NE from Texas Instruments is a monolithic low-side power DMOS driver IC with serial SPI-compatible interface and integrated diagnostics, delivering 350 mA continuous current per channel across six independent outputs, featuring internal 60-V inductive load clamping, ON-state shorted-load/short-to-battery detection, OFF-state open-load sensing, and over-temperature/over-voltage protection - used in automotive body control modules for relay and solenoid driving.
For engineers reviewing the TPIC2603NE datasheet, TPIC2603NE pinout, TPIC2603NE application, or TPIC2603NE equivalent, this page delivers verified technical context, validated pin functions, confirmed fault-reporting behavior via SDO, real-world thermal derating (20 mW/°C), and precise alternative part comparisons for industrial and automotive load-switching designs.
Technical Context
The TPIC2603NE implements a serial shift-register control architecture with 8-/16-bit data framing, where the last six bits directly map to DRAIN0–DRAIN5 output states, and fault status (open-load, short-to-battery, over-temperature) is reported via exclusive-OR encoding on the SDO line during CS-low cycles. Each channel operates independently with asynchronous fault flag latching.
Its protection system combines analog current limiting (IL = 0.8–5 A typ), PWM-mode transition under sustained over-current (70 µs delay), 40-µA open-load test current, 35 V over-battery shutdown with 0.4–2 V hysteresis, and junction temperature sensing at 150–185°C trip point - all communicated through the same serial interface without additional pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output count | Six independent low-side DMOS switches (DRAIN0–DRAIN5) |
| Continuous current per channel | 350 mA at TC = 25°C; derates to 500 mW total at TC = 125°C (NE package) |
| Drain-source breakdown voltage | 68 V maximum - enables direct connection to 24 V automotive battery systems with transient margin |
| Fault reporting interface | Serial SDO output with exclusive-OR encoded fault flags (bits 0–5 = per-channel, bit 6 = global over-temp) |
| Operating temperature range | −40°C to +125°C case temperature - qualified for under-hood automotive environments |
| Logic supply | 4.5–5.5 V VCC - CMOS-compatible with standard 5 V microcontrollers |
| Battery supply range | 5.5–25 V Vbat - supports 12 V and 24 V nominal vehicle electrical systems |
Pinout & Package
TPIC2603NE uses a 20-pin plastic DIP (NE) package with 0.3-inch body width and through-hole mounting. Pin 1 is located at top-left corner (Q1 quadrant), with GND on pins 5, 6, 15, and 16; VCC on pin 11; Vbat on pin 20; and six drain outputs occupying pins 1, 2, 9, 10, 12, and 19.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 8) | Active-low chip select | Enables serial data input and fault readout; internal pullup ensures default high-impedance SDO state |
| SDI (Pin 4) | Serial data input | Accepts 8- or 16-bit frames; internal pulldown holds low when unconnected |
| SCLK (Pin 3) | Serial clock input | Rising-edge triggered; supports up to 4 MHz operation with 100 ns minimum pulse width |
| SDO (Pin 7) | Serial data output | 3-state fault report port; outputs OR-ed fault bits synchronized to SCLK during CS-low |
| DRAIN0–DRAIN5 (Pins 1,2,9,10,12,19) | Low-side power switch outputs | Each integrates 60-V clamp diode and supports resistive/inductive loads (relays, valves, lamps) |
| Vbat (Pin 20) | Battery voltage monitor | Triggers over-voltage lockout at 35 V with hysteresis; powers internal protection circuitry |
| VCC (Pin 11) | Logic supply input | 5 V ±10% supply for shift register, control logic, and fault registers |
| GND (Pins 5,6,15,16) | Ground reference | Four dedicated ground pins minimize IR drop and improve noise immunity in high-current switching |
Key Features
| Feature | Design Value |
|---|---|
| Independent per-channel diagnostics | Simultaneous ON-state short-to-battery detection and OFF-state open-load sensing - eliminates need for external sense resistors or comparators |
| Self-protecting over-current response | Automatic transition to low-duty-cycle PWM mode upon sustained over-current - maintains partial functionality while preventing thermal runaway |
| Integrated inductive transient suppression | Internal 60-V drain-gate clamp on each output - eliminates requirement for external flyback diodes in relay/solenoid applications |
| Single-wire serial fault reporting | SDO returns real-time fault flags (bit-mapped per channel + global over-temp) using same clock/data protocol as control inputs - reduces PCB routing complexity |
| Automotive-grade thermal robustness | Operates continuously at TC = 125°C with validated 20 mW/°C derating - supports placement near heat sources in engine compartments |
Applications
| Automotive Body Control Unit (BCU) | Industrial PLC Output Module |
|---|---|
Use Scenario: Driving multiple 12 V relays for door locks, lighting, and HVAC actuators in passenger vehicles. IC Role / Device Role / Timing Role: Low-side switch controller with embedded diagnostics, replacing discrete MOSFETs + sense circuits + microcontroller GPIO expansion. Use Value: Reduces BOM count by 6× per channel and enables automated fault logging via existing SPI bus - cuts diagnostic development time by ~40%. |
Use Scenario: Controlling 24 V solenoid valves and indicator lamps in factory automation I/O racks. IC Role / Device Role / Timing Role: Fault-aware power driver interfacing with ARM-based PLC mainboard via isolated SPI. Use Value: Detects open coils and shorted wiring before field failure, enabling predictive maintenance alerts without adding external monitoring hardware. |
| Off-Highway Equipment Control | Commercial Vehicle Lighting System |
Use Scenario: Managing hydraulic valve banks and auxiliary lights in construction machinery with wide battery voltage swings (9–32 V). IC Role / Device Role / Timing Role: Robust load switch with over-voltage lockout (35 V threshold) and extended temperature operation (−40°C to +125°C). Use Value: Survives jump-start transients and cold-cranking dips without latch-up or false fault reporting - improves system uptime in harsh environments. |
Use Scenario: Switching LED headlamps, turn signals, and brake lights in Class 8 trucks with CAN-based lighting controllers. IC Role / Device Role / Timing Role: Digitally controlled low-side driver with per-lamp open-circuit detection and short-to-battery reporting. Use Value: Enables automatic lamp-out warning on dashboard display using only serial fault bits - meets FMVSS 108 compliance requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-side driver with serial diagnostics applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPIC2603DW | Same functional silicon in 24-pin SOIC (DW) package; higher thermal resistance (RθJA = 50°C/W vs NE's 40°C/W); no lead spacing advantage | Preferred for surface-mount assembly and higher-density PCB layouts; unsuitable for through-hole prototyping or legacy DIP footprints | Select TPIC2603DW when board space is constrained and reflow capability exists; avoid if manual soldering or socket-based testing is required. |
| TPIC2810NE | 8-channel version with identical pinout compatibility (20-pin DIP), same 350 mA rating, but adds enhanced ESD protection (±4 kV HBM) and improved Vbat tolerance (up to 36 V) | Supports higher channel-count BCU designs without layout change; requires firmware update to handle extra two channels in serial frame | Choose TPIC2810NE for new designs needing scalability beyond six loads; retain TPIC2603NE for cost-sensitive or legacy-replacement use cases. |
Compared with TPIC2603DW, TPIC2603NE offers lower thermal resistance and through-hole reliability but lacks surface-mount compatibility; versus TPIC2810NE, it provides identical diagnostics and drive strength at lower unit cost and simpler firmware, though with fixed six-channel capacity.
Availability
TPIC2603NE is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC output stages, off-highway equipment control, and commercial vehicle lighting systems requiring stable component supply across extended product lifecycles.
Supply support for TPIC2603NE 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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of automotive qualification expertise and AEC-Q100-compliant manufacturing.
The TPIC2603NE belongs to TI's Power Management – Smart Power Switches product line, designed specifically for fault-tolerant, digitally controlled load switching in harsh-environment automotive and industrial applications.
FAQ
What is the maximum continuous current per channel for the TPIC2603NE?
The TPIC2603NE delivers 350 mA continuous current per channel at TC = 25°C. Derating applies above ambient: total power dissipation drops linearly from 2500 mW at 25°C to 500 mW at 125°C (20 mW/°C). This rating assumes proper PCB copper area and airflow per TI's NE-package thermal guidelines. The TPIC2603NE maintains safe operation under sustained load when mounted on ≥2 oz copper with ≥1 in² thermal pad.
Does the TPIC2603NE support both 8-bit and 16-bit serial communication protocols?
Yes, the TPIC2603NE accepts either 8-bit or 16-bit serial data frames on SDI. In 8-bit mode, the first two bits are unused, and the last six bits control DRAIN0–DRAIN5. In 16-bit mode, the first ten bits are ignored, and the final six bits serve as output controls. Fault data always appears in the first eight bits of SDO output regardless of frame length. The TPIC2603NE does not auto-detect frame size - protocol must be fixed in host firmware.
How does the TPIC2603NE detect open-load faults on its outputs?
The TPIC2603NE detects open-load faults during OFF-state by activating a 40 µA current source on each drain terminal approximately 70 µs after turn-off. If the load is intact, the resulting voltage stays above the 0.3–0.7 VCC open-load threshold; if open, the current pulls the drain low, triggering a fault flag. This occurs independently per channel and is reported in bits 0–5 of the SDO fault word. The TPIC2603NE requires no external components to perform this function.
What happens when an over-temperature condition is detected by the TPIC2603NE?
When the TPIC2603NE junction temperature exceeds ~170°C, it sets the global over-temperature fault bit (bit 6 in 8-bit mode, bit 14 in 16-bit mode) and reports it via SDO. Crucially, the TPIC2603NE does not disable any drain outputs - operation continues uninterrupted while fault status is communicated. The thermal flag has 5–15°C hysteresis to prevent oscillation near threshold. This allows system-level thermal management decisions without losing actuator control.
Can the TPIC2603NE drive inductive loads without external flyback diodes?
Yes, the TPIC2603NE integrates internal 60-V drain-gate clamp diodes on all six outputs, enabling direct connection to relays, solenoids, and other inductive loads without external flyback components. These clamps suppress voltage transients up to 68 V (V(BR)DSX min), protecting both the TPIC2603NE and upstream logic. For highly energetic loads (e.g., >100 mJ single-pulse avalanche), TI recommends verifying layout parasitics - but the TPIC2603NE eliminates diode BOM cost and placement in most automotive applications.
TPIC2603NE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Type:
- General Purpose
- Number of Outputs:
- 6
- Ratio - Input:Output:
- 1:6
- Output Configuration:
- Low Side
- Output Type:
- -
- Interface:
- Serial
- Voltage - Load:
- 5.5V ~ 25V
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Current - Output (Max):
- 350mA
- Rds On (Typ):
- 1.7Ohm
- Input Type:
- -
- Features:
- -
- Fault Protection:
- Current Limiting (Fixed), Open Load Detect, Over Temperature, Over Voltage
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 20-PDIP
TPIC2603NE FAQ
1.How can I place an order for TPIC2603NE through Aetrix?
Please submit a Request for Quotation (RFQ) for TPIC2603NE 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 TPIC2603NE reliable?
The price and inventory of TPIC2603NE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPIC2603NE is usually 5 days.
3.What payment methods are accepted for TPIC2603NE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPIC2603NE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPIC2603NE?
TPIC2603NE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPIC2603NE 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 TPIC2603NE?
For technical support, including TPIC2603NE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPIC2603NE requirements.
6.How does Aetrix verify that TPIC2603NE is sourced from the original manufacturer or authorized distributors?
All TPIC2603NE 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 TPIC2603NE meets industry standards.
7.What is the process for return or replacement of TPIC2603NE?
All TPIC2603NE units undergo pre-shipment inspection (PSI). If there is an issue with TPIC2603NE, 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 TPIC2603NE part is unused and in its original packaging.
Return procedure for TPIC2603NE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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