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Renesas M52461GP#TF0J
- Part No.:
- M52461GP#TF0J
- Manufacturer:
- Renesas
- Category:
- Motor Drivers, Controllers
- Package:
- -
- Datasheet:
-
M52461GP#TF0J.pdf
- Description:
- MOTOR CONTROLLER IC
- Quantity:
- Payment:
- Shipping:
Inventory:2,245
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Product details
Overview
M52461GP#TF0J from Renesas Electronics is a servo motor control IC for radio-controlled systems, integrating pulse stretcher, dead-band adjustment, local oscillator, and four transistor driver outputs. It operates from 2.8–7.5 V, delivers regulated 2.5 V internal supply, and supports ±10 mA output sink/source per channel with 10 ms max output pulse width.
For engineers reviewing the M52461GP#TF0J datasheet, M52461GP#TF0J pinout, M52461GP#TF0J application, or M52461GP#TF0J equivalent, key selection criteria include its SSOP-16 package, 2.5 V VREG output, dead-band capacitor tuning (CDB), fixed/variable pulse width generation (CFP/CL/RT), and dual-NPN/dual-PNP base drive capability for RC servo actuation.
Technical Context
The M52461GP#TF0J implements analog-based servo position error detection using potentiometer feedback (POT pin) and input pulse width comparison. Its internal voltage regulator (VREG) powers external timing components, while one-shot multivibrators and constant-current sources (RT/CL pins) generate precise local and stretched pulses.
It uses discrete transistor drive outputs (OUT1–OUT4) to interface with external NPN/PNP pairs, enabling bidirectional motor control without integrated H-bridge. Dead-band width (Wdb1/Wdb2) and fixed driving pulse width (WKP) are set via external capacitors on CDB and CFT pins, respectively, with temperature-stable operation across –20°C to +75°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.8–7.5 V - Supports common RC receiver battery rails (e.g., 4×AA, LiFe, NiMH). |
| VREG Output | 2.5 V ±0.15 V - Powers external timing resistors/capacitors with <0.2 %/V supply dependence. |
| Output Pulse Width | 0.3–12.0 ms - Covers standard RC servo range (0.5–2.5 ms) plus extended positioning and stretcher modes. |
| Dead Band Range | 0–6.0 µs - Adjustable via CDB capacitor; eliminates jitter near center position in proportional control. |
| Output Drive Capability | ±40 mA per OUTx - Sinks/supplies base current for external NPN/PNP transistors driving 12 V/1 A servos. |
| Operating Temperature | –20°C to +75°C - Validated for indoor/outdoor RC equipment use without derating. |
| Package | SSOP-16 (16P2E-A, 0.65 mm pitch) - Surface-mount compatible with 225 mil body width and JEDEC EIAJ code. |
Pinout & Package
Package: 16-pin SSOP (16P2E-A), plastic, 0.65 mm pitch, 225 mil width, 0.06 g weight, JEDEC-compliant outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREG (Pin 1) | Internal regulated voltage source | Provides stable 2.5 V reference for external timing networks; connects to potentiometer wiper and CST resistor. |
| CST (Pin 2) | Pulse stretcher timing node | Accepts RC network to extend output pulse duration beyond standard RC servo frame (e.g., for high-torque stall recovery). |
| CDB (Pin 3) | Dead-band capacitance input | Adjusts null zone width around center position; larger capacitor increases insensitivity to small input variations. |
| INPUT (Pin 4) | PWM command input | Accepts standard RC servo pulse (0.5–2.5 ms) at TTL-compatible logic levels (Vih ≥ 2.0 V). |
| RT (Pin 5) | Constant current reference | Sets 100 µA current source (with 18 kΩ) that charges CL capacitor to define local oscillator period. |
| CL (Pin 6) | Local oscillator timing | Connects capacitor charged by RT current to generate triangular waveform for pulse width modulation. |
| N.C. (Pin 7) | No connection | Internally unconnected; must remain floating or grounded per layout best practice. |
| POT (Pin 8) | Servo position feedback | Receives wiper voltage from output shaft potentiometer; enables closed-loop proportional position control. |
| GND (Pin 9) | Signal and power ground | Common return for all analog and digital circuitry; requires low-impedance PCB plane connection. |
| OUT1/OUT3 (Pins 10/12) | NPN transistor base drive | Active-low outputs sinking up to 40 mA; drive bases of external NPN transistors in push-pull configuration. |
| OUT2/OUT4 (Pins 11/13) | PNP transistor base drive | Active-high outputs sourcing up to 40 mA; drive bases of external PNP transistors for complementary motor drive. |
| N.C. (Pin 14) | No connection | Internally unconnected; must remain floating or grounded per layout best practice. |
| VCC (Pin 15) | Main supply input | Accepts 2.8–7.5 V; requires ≥10 µF bulk capacitor for stability under pulsed load conditions. |
| CFT (Pin 16) | Fixed pulse width timing | Connects capacitor to set baseline driving pulse width (0.7–1.3 ms); independent of CDB/CST adjustments. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode pulse generation | Separate fixed (CFT) and variable (CL/RT) timing paths enable both standard RC compliance and custom servo response tuning. |
| Externally adjustable dead band | CDB capacitor sets null zone width (0–6 µs), reducing motor hunting during fine-positioning tasks. |
| Integrated VREG with low drift | 2.5 V ±0.15 V output with <0.2 %/V supply sensitivity ensures stable timing across battery discharge curves. |
| Four dedicated transistor drivers | Two NPN-sink (OUT1/OUT3) and two PNP-source (OUT2/OUT4) outputs simplify discrete H-bridge implementation. |
| Temperature-stable operation | Validated performance over –20°C to +75°C ambient without calibration or compensation circuits. |
Applications
| RC Model Aircraft Servo Control | RC Surface Vehicle Steering Actuation |
|---|---|
Use Scenario: Precision control of elevator, rudder, and aileron servos in 2.4 GHz spread-spectrum RC aircraft receivers. IC Role / Device Role / Timing Role: Servo motor controller generating position-corrected PWM outputs based on receiver pulse width and potentiometer feedback. Use Value: Enables sub-millisecond dead-band tuning and 10 ms pulse stretching to overcome mechanical stiction in high-torque metal-gear servos. | Use Scenario: Steering angle control in 1:8 scale RC trucks operating under vibration, dust, and thermal cycling. IC Role / Device Role / Timing Role: Closed-loop position controller interfacing RC receiver signals with external NPN/PNP H-bridge transistors driving brushed DC steering motors. Use Value: Delivers 40 mA base drive per output and maintains 2.5 V regulation across 2.8–7.5 V input range, ensuring consistent torque response as battery discharges. |
| RC Marine Vessel Throttle & Rudder | RC Robotics Joint Positioning |
Use Scenario: Dual-channel control of throttle and rudder servos in saltwater-exposed RC boats requiring corrosion-resistant external transistor stages. IC Role / Device Role / Timing Role: Dual independent servo controller with separate CDB/CFT timing per channel for asymmetric response tuning. Use Value: Provides isolated VREG output and ±40 mA drive per channel, allowing direct coupling to sealed transistor modules without additional LDOs or level shifters. | Use Scenario: Multi-axis joint positioning in hobby-grade walking robots using potentiometer feedback and discrete motor drivers. IC Role / Device Role / Timing Role: Analog servo controller implementing proportional error correction with programmable pulse stretch for dynamic load compensation. Use Value: Supports 12 ms max output pulse width and adjustable dead band to accommodate slow-response gearmotors and reduce oscillation during gait transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar servo motor control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BA6686F | Single-output design; no POT feedback input; fixed 1.5 ms local pulse; no CDB/CFT tuning. | Limited to open-loop RC servos without position sensing; lacks dead-band or pulse-stretch adjustment. | Select BA6686F only for cost-sensitive, single-axis applications where closed-loop feedback and fine-tuning are unnecessary. |
| HA11216 | Three-output variant; includes built-in 5 V regulator; no VREG pin; different CL/RT timing architecture. | Designed for multi-servo receivers with shared timing; requires redesign of external RC networks and feedback path. | Choose HA11216 when consolidating multiple servo channels onto one board with unified timing and no need for individual dead-band per axis. |
Compared with BA6686F and HA11216, the M52461GP#TF0J uniquely supports full closed-loop position control via POT feedback, independent dead-band (CDB) and fixed-pulse (CFT) tuning, and four discrete transistor drivers-making it suitable for high-fidelity RC servo systems requiring adaptive response and thermal stability.
Availability
M52461GP#TF0J is available at Aetrix Electronics and suitable for RC model aircraft, surface vehicle steering, marine vessel control, and robotics joint positioning requiring stable component supply and long-term obsolescence management.
Supply support for M52461GP#TF0J 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
Renesas Electronics Corporation is a Japanese semiconductor manufacturer formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and mixed-signal ICs.
The M52461GP#TF0J belongs to Renesas' legacy radio control IC product line, designed specifically for analog servo motor control in consumer and hobbyist remote-controlled systems with emphasis on timing precision and external transistor interface flexibility.
FAQ
What is the primary function of the M52461GP#TF0J in an RC system?
The M52461GP#TF0J serves as a dedicated servo motor controller IC that converts incoming RC pulse-width signals into amplified, timed drive outputs for external NPN/PNP transistor pairs. It implements closed-loop position control using potentiometer feedback (POT pin), generates adjustable dead-band and stretched pulses, and provides regulated 2.5 V timing voltage. The M52461GP#TF0J is not a standalone servo but a core analog control IC for building custom RC servo actuators.
Can the M52461GP#TF0J operate directly from a 3.7 V LiPo battery?
Yes, the M52461GP#TF0J supports supply voltages from 2.8 V to 7.5 V, making it fully compatible with single-cell 3.7 V LiPo batteries (nominal) and their discharge range (~3.0–4.2 V). Its internal VREG remains stable across this range, and electrical characteristics such as ICC1 (5–10 mA) and Vosat (<0.4 V at 20 mA) are specified down to 2.8 V. The M52461GP#TF0J requires a minimum 10 µF capacitor on VCC (Pin 15) for transient stability under pulsed loads.
How does the CDB pin (Pin 3) affect servo performance?
The CDB pin on the M52461GP#TF0J accepts an external capacitor to set the dead-band width-the range of input pulse widths around center position (typically 1.5 ms) within which no motor movement occurs. A larger CDB capacitor increases dead-band width (up to 6.0 µs), suppressing small input fluctuations and reducing motor jitter during idle or fine positioning. This feature is critical for smooth operation in high-resolution RC systems. The M52461GP#TF0J's CDB functionality is absent in simpler alternatives like BA6686F.
What external components are mandatory for basic M52461GP#TF0J operation?
For basic operation, the M52461GP#TF0J requires: (1) ≥10 µF capacitor on VCC (Pin 15); (2) potentiometer connected between VREG (Pin 1), POT (Pin 8), and GND (Pin 9); (3) RC network on CST (Pin 2) for pulse stretching; (4) capacitor on CFT (Pin 16) for fixed pulse width; and (5) external NPN/PNP transistors driven by OUT1–OUT4. No crystal or clock source is needed-the M52461GP#TF0J uses internal constant-current charging for timing. All mandatory components are specified in the "Pin Description" section of the official Renesas datasheet for M52461GP#TF0J.
Is the M52461GP#TF0J recommended for new designs?
No-the M52461GP#TF0J is marked "Not recommend for new design" in the official Renesas documentation due to its legacy status and discontinuation risk. While fully functional and supported for existing production, Renesas advises evaluating modern alternatives for new projects. Aetrix Electronics maintains inventory and offers lifecycle management for the M52461GP#TF0J to support legacy RC equipment repair and long-term maintenance. Designers should consult Renesas' latest product roadmap before initiating new development with the M52461GP#TF0J.
M52461GP#TF0J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- -
- Function:
- -
- Output Configuration:
- -
- Interface:
- -
- Technology:
- -
- Step Resolution:
- -
- Applications:
- -
- Current - Output:
- -
- Voltage - Supply:
- -
- Voltage - Load:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
M52461GP#TF0J FAQ
1.How can I place an order for M52461GP#TF0J through Aetrix?
Please submit a Request for Quotation (RFQ) for M52461GP#TF0J 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 M52461GP#TF0J reliable?
The price and inventory of M52461GP#TF0J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M52461GP#TF0J is usually 5 days.
3.What payment methods are accepted for M52461GP#TF0J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M52461GP#TF0J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M52461GP#TF0J?
M52461GP#TF0J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M52461GP#TF0J 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 M52461GP#TF0J?
For technical support, including M52461GP#TF0J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M52461GP#TF0J requirements.
6.How does Aetrix verify that M52461GP#TF0J is sourced from the original manufacturer or authorized distributors?
All M52461GP#TF0J 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 M52461GP#TF0J meets industry standards.
7.What is the process for return or replacement of M52461GP#TF0J?
All M52461GP#TF0J units undergo pre-shipment inspection (PSI). If there is an issue with M52461GP#TF0J, 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 M52461GP#TF0J part is unused and in its original packaging.
Return procedure for M52461GP#TF0J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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