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Diodes Incorporated ZXBM5409Q-N-U
- Part No.:
- ZXBM5409Q-N-U
- Manufacturer:
- Diodes Incorporated
- Category:
- Motor Drivers, Controllers
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ZXBM5409Q-N-U.pdf
- Description:
- MOTOR DRIVER SERVO CTRL PDIP-8
- Quantity:
- Payment:
- Shipping:
Inventory:3,135
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Product details
Overview
ZXBM5409Q-N-U from Diodes Incorporated is a protected H-bridge DC motor driver IC designed for automotive headlight beam positioning and industrial servo control. It integrates low-RDS(ON) MOSFETs (typ. 1.0 Ω total path), delivers 0.8A continuous / 1.6A peak output current, operates from 8V–18V supply, and features programmable hysteresis, deadband, and angle amplification via external resistors.
For engineers reviewing the ZXBM5409Q-N-U datasheet, ZXBM5409Q-N-U pinout, ZXBM5409Q-N-U application, or ZXBM5409Q-N-U equivalent, this device is selected for precision analog-servo loop control in AEC-Q100 Grade 1 automotive systems requiring fault-aware motor drive with RANGE input monitoring, thermal shutdown, and overvoltage/undervoltage lockout.
Technical Context
The ZXBM5409Q-N-U implements a fully integrated servo control architecture with three independent amplifier stages: a range comparator (RANGE pin), a position error amplifier (REF/FB differential input), and a hysteresis comparator (HYST pin). Its control logic interprets voltage ratios across VDD to determine CW/CCW rotation or brake states based on VFB vs. VREF and hysteresis window thresholds.
Protection is implemented at silicon level: UVLO triggers at 6.9V (shutdown) / 7.4V (release); OVP activates at 20.5V (shutdown) / 20V (release); overcurrent detection responds within 2µs at 1.6A; thermal shutdown engages at TJ = +170°C with +30°C hysteresis. All protections force full H-bridge disable and enter standby mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 8V to 18V - supports 12V automotive battery systems with ±10% tolerance and transient ride-through capability up to 45V (non-operational stress rating). |
| Output Current | 0.8A continuous / 1.6A peak - sufficient for small DC-brush servo motors used in headlight actuators and industrial positioning stages. |
| Total RDS(ON) | 1.0 Ω typical (H-bridge path) - minimizes conduction loss and self-heating during sustained 0.8A operation at ambient ≤125°C. |
| Hysteresis Window | 4% of VDD (typ.) - sets stable direction-switching threshold to prevent oscillation near zero-error position in closed-loop servo applications. |
| RANGE Input Fault Detection | Detects short-to-GND (<0.4V), open-circuit (>VDD), and short-to-supply - prevents uncontrolled motor motion if potentiometer wiring fails. |
| Thermal Shutdown | Triggers at TJ = +170°C with +30°C hysteresis - ensures safe recovery before re-enabling drive after overheating due to overload or poor PCB thermal design. |
| Operating Ambient | −40°C to +125°C - qualified per AEC-Q100 Grade 1, enabling under-hood deployment without derating. |
Pinout & Package
Package: PDIP-8 (Type A1), through-hole, lead-free, RoHS-compliant, green molding compound. Qualified to AEC-Q100 Grade 1 with PPAP support.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Position feedback input | Differential input to servo amplifier; monitors motor shaft position via external potentiometer wiper voltage relative to REF. |
| 2 HYST | Hysteresis configuration I/O | Sets symmetric hysteresis window around 50% VDD using external resistor divider; determines minimum position error required to change direction. |
| 3 OUT1 | H-bridge output 1 | High-side/low-side sourcing/sinking terminal; connects directly to one motor terminal; forms half-bridge with OUT2. |
| 4 VDD | Power supply input | Primary power rail (8–18V); supplies internal regulators, logic, and gate drivers; requires local 100nF decoupling. |
| 5 OUT2 | H-bridge output 2 | Complementary H-bridge terminal; drives opposite motor terminal; enables bidirectional torque and braking. |
| 6 GND | Power and signal reference | Common return for VDD, motor current paths, and internal analog circuitry; must be low-impedance connection to minimize noise coupling. |
| 7 RANGE | Fault-monitoring input | Monitors potentiometer reference voltage; disables outputs if voltage falls below 0.4V (short-to-GND) or exceeds VDD (open-circuit). |
| 8 REF | Reference input | Differential input to servo amplifier; receives fixed reference voltage from potentiometer end terminal; defines target position. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated H-bridge with low RDS(ON) | 1.0 Ω typical total path resistance reduces I²R losses and enables 0.8A continuous drive without external heatsinking in PDIP-8. |
| Programmable servo loop parameters | Hysteresis, deadband, and angle gain configured via external resistors-no microcontroller or digital interface required for analog position control. |
| Comprehensive fault protection | Simultaneous monitoring of RANGE input integrity, supply UV/OV, output overcurrent, and junction temperature-each fault forces immediate H-bridge disable. |
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C ambient operation with PPAP documentation support-meets automotive OEM requirements for headlight actuator modules. |
| Analog position feedback interface | REF/FB differential input accepts 0–1.5V signals with 6kΩ input resistance-compatible with standard 5kΩ–10kΩ linear potentiometers used in mechanical servo linkages. |
Applications
| Automotive Headlight Beam Control | Industrial Linear Actuator Positioning |
|---|---|
|
Use Scenario: Precise left/right and up/down adjustment of projector-type LED headlight modules in adaptive driving beam (ADB) systems. IC Role / Device Role / Timing Role: Analog servo controller that compares potentiometer feedback (FB) against reference (REF) to command H-bridge direction and braking-no PWM or digital bus needed. Use Value: Eliminates need for MCU-based motor control firmware and external op-amps; reduces BOM count and improves ASIL-B functional safety compliance via deterministic analog fault response. |
Use Scenario: Closed-loop positioning of HVAC damper actuators, valve positioners, or robotic gripper joints powered by 12V DC-brush motors. IC Role / Device Role / Timing Role: Standalone servo driver interpreting analog position commands and providing real-time overcurrent/thermal protection without host processor intervention. Use Value: Enables plug-and-play integration into legacy analog control systems; supports field calibration via resistor tuning of hysteresis and deadband without firmware update. |
| Automotive Mirror Adjustment System | Medical Equipment Positioning Stage |
|
Use Scenario: Motorized side-view mirror tilt and fold control in passenger vehicles meeting OEM durability and EMI requirements. IC Role / Device Role / Timing Role: Fault-tolerant H-bridge driver with RANGE input monitoring to detect broken potentiometer connections and prevent runaway movement during vehicle wash or impact events. Use Value: Meets ISO 16750-2 pulse test requirements via integrated UVLO/OVP; eliminates discrete protection components and reduces PCB area by >30% versus discrete FET + controller solution. |
Use Scenario: Precision lens or sensor alignment in portable diagnostic devices where silent, jitter-free positioning is critical. IC Role / Device Role / Timing Role: Low-noise analog servo controller with <4% hysteresis window and 2µs overcurrent response-prevents audible motor chatter and overshoot during fine adjustments. Use Value: Achieves sub-degree angular resolution using standard 10-turn potentiometers; thermal shutdown prevents coil burnout during extended hold periods in battery-powered devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar brushed DC motor servo drive applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TB9051FTG | 3-phase BLDC gate driver with integrated current sense; requires external MCU for commutation logic; no native analog servo loop. | Designed for brushless motors in EPS and cooling fans-not drop-in compatible for DC-brush servo use cases. | Select only if migrating from brushed to BLDC motors and adding MCU-based field-oriented control. |
| DRV8876N | H-bridge with 3.6A peak current, SPI interface, and integrated current regulation-but no analog REF/FB servo amplifier or RANGE fault monitor. | Targets programmable current-controlled drives in robotics; lacks dedicated potentiometer interface and hysteresis programming. | Choose when digital control, higher current, or current-loop regulation is prioritized over analog position servo simplicity. |
Compared with TB9051FTG and DRV8876N, the ZXBM5409Q-N-U uniquely delivers a complete analog servo control loop-including position error amplification, hysteresis setting, and RANGE input fault detection-in a single AEC-Q100-qualified IC, eliminating MCU dependency and reducing system-level validation effort for automotive headlight and industrial actuator designs.
Availability
ZXBM5409Q-N-U is available at Aetrix Electronics and suitable for automotive headlight beam control, industrial linear actuator positioning, and medical equipment positioning stages requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for ZXBM5409Q-N-U 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and ICs, specializing in high-reliability power management, signal integrity, and protection solutions for automotive, industrial, and consumer markets.
The ZXBM5409Q belongs to Diodes' automotive-grade motor driver product line, engineered specifically for analog-servo control of brushed DC motors in safety-critical positioning applications such as adaptive headlights and mirror systems.
FAQ
What is the maximum continuous motor current the ZXBM5409Q-N-U can drive?
The ZXBM5409Q-N-U delivers 0.8A continuous output current per H-bridge leg under recommended operating conditions (TA ≤ +125°C, PDIP-8 on 2-layer FR-4 PCB). Peak current capability is 1.6A for short durations, limited by internal overcurrent protection which triggers after 2µs at that level. Continuous operation above 0.8A risks thermal shutdown unless board-level heatsinking is enhanced beyond minimum pad layout.
How does the RANGE pin fault detection work in practice?
The RANGE pin monitors the voltage from a potentiometer's reference end terminal. If that voltage drops below 0.4V (indicating short-to-GND), rises above VDD (indicating open-circuit), or exceeds 20V absolute max, the IC immediately disables both OUT1 and OUT2 and enters standby mode. This prevents unintended motor motion during wiring faults-critical for automotive headlight safety compliance.
Can the hysteresis and deadband be adjusted without changing external resistors?
No-hysteresis and deadband thresholds are set exclusively by external resistor dividers connected to the HYST, REF, and FB pins. The HYST pin accepts a voltage divider (RHYH/RHYL) to define the hysteresis window center and width; REF and FB form a differential pair whose offset determines deadband. No internal registers or digital interface exist for dynamic adjustment.
Is the ZXBM5409Q-N-U pin-compatible with earlier revisions like ZXBM5409Q-N?
Yes-the "-U" suffix denotes tube packaging and automotive compliance; electrically and mechanically, ZXBM5409Q-N-U is identical to ZXBM5409Q-N. Both use PDIP-8 (Type A1) package with identical pinout, absolute maximum ratings, and electrical characteristics. The -U variant is explicitly designated for PPAP-capable automotive programs per Diodes' ordering information.
ZXBM5409Q-N-U Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- Brushed DC, DC Servo
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (2)
- Interface:
- -
- Technology:
- Power MOSFET
- Step Resolution:
- -
- Applications:
- -
- Current - Output:
- 800mA
- Voltage - Supply:
- 8V ~ 18V
- Voltage - Load:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ZXBM5409Q-N-U FAQ
1.How can I place an order for ZXBM5409Q-N-U through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXBM5409Q-N-U 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 ZXBM5409Q-N-U reliable?
The price and inventory of ZXBM5409Q-N-U are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXBM5409Q-N-U is usually 5 days.
3.What payment methods are accepted for ZXBM5409Q-N-U?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXBM5409Q-N-U transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXBM5409Q-N-U?
ZXBM5409Q-N-U orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXBM5409Q-N-U 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 ZXBM5409Q-N-U?
For technical support, including ZXBM5409Q-N-U datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXBM5409Q-N-U requirements.
6.How does Aetrix verify that ZXBM5409Q-N-U is sourced from the original manufacturer or authorized distributors?
All ZXBM5409Q-N-U 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 ZXBM5409Q-N-U meets industry standards.
7.What is the process for return or replacement of ZXBM5409Q-N-U?
All ZXBM5409Q-N-U units undergo pre-shipment inspection (PSI). If there is an issue with ZXBM5409Q-N-U, 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 ZXBM5409Q-N-U part is unused and in its original packaging.
Return procedure for ZXBM5409Q-N-U:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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