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STMicroelectronics TD220ID
- Part No.:
- TD220ID
- Manufacturer:
- STMicroelectronics
- Category:
- Special Purpose Regulators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TD220ID.pdf
- Description:
- IC REG CTRLR MICRO-C 1OUT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,906
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Product details
Overview
TD220ID from STMicroelectronics is a monolithic gate driver IC with integrated 3.3V linear regulator and two-point regulator for offline microcontroller power supply generation. It delivers 60mA source / 120mA sink gate drive, features UVLO (7.8–15V hysteresis), 2kV HBM ESD protection, and operates from –25°C to +125°C in SO-8 package. Used in AC/DC auxiliary supplies for MCU-based smart meters.
For engineers reviewing the TD220ID datasheet, TD220ID pinout, TD220ID application, or TD220ID equivalent, key selection criteria include gate drive current capability under temperature, VOUT load regulation (50 mV over 10–25 mA), TPR turn-on/off thresholds (13.6 V / 12.4 V), and UVLO hysteresis (5 V) for stable offline startup.
Technical Context
The TD220ID integrates three functional blocks on a single die: a two-point regulator (TPR) that enables self-starting from rectified AC via VSUP with 13.6 V turn-on and 12.4 V turn-off thresholds; a 3.3 V linear regulator (VOUT) with ±100 mV output tolerance at 10 mA and 250 ppm/°C tempco; and a push-pull gate driver with 60 mA source / 120 mA sink capability and 80 ns minimum pulse width.
Its UVLO circuit disables all outputs below 7.8 V and re-enables above 15 V, providing 5 V hysteresis to prevent oscillation during brown-out. The GATE output is internally clamped to VCC–2.0 V (VOH) and 0.5 V (VOL), while standby current remains ≤230 µA across temperature when UVLO is active.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VOUT | 3.3 V ±100 mV at 10 mA - ensures stable MCU core voltage under varying load |
| GATE Isink | 120 mA min at 25°C - drives medium-size MOSFETs without external buffer |
| GATE Isource | 60 mA min at 25°C - supports fast turn-on of N-channel high-side switches |
| TPR Thresholds | 13.6 V ON / 12.4 V OFF - enables reliable charge-pump startup in 85–265 VAC inputs |
| UVLO Hysteresis | 5 V - prevents chattering during input voltage sag near lockout boundary |
| ESD Rating | 2 kV HBM - protects gate driver inputs during PCB handling and system integration |
| Startup Current | ≤1.2 mA at VCC = 13 V - minimizes startup resistor power loss in high-impedance bias networks |
Pinout & Package
TD220ID is housed in an SO-8 (Small Outline, 150 mil width) plastic micro-package with standard 1.27 mm pitch, 1.35–1.75 mm body height, and thermal resistance θJA = 150 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply capacitor & startup resistor node | Bias supply input; connects to reservoir cap and high-value startup resistor from rectified AC |
| VOUT | 3.3 V regulated output | Powers MCU core logic; requires 0.1–1 µF ceramic output capacitor per datasheet Note 1 |
| IN | Digital enable input | Active-high logic interface; 1.8 V turn-on threshold with 0.5 V hysteresis for noise immunity |
| GATE | Push-pull gate drive output | Drives external MOSFET gate; capable of 120 mA sink / 60 mA source into capacitive loads |
| GND | Signal ground reference | Common return for regulator, driver, and logic; must be low-inductance connection to PCB ground plane |
| VSUP | Charge pump input | Accepts pulsating DC from charge-pump diode network; rated for ±200 mA continuous, ±1 A peak |
| VCAP | Charge pump capacitor node | Connects to external timing capacitor (220 nF typical) to set charge-pump frequency and ripple |
| NC | No connect | Internally unconnected pin; must remain floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Integrated two-point regulator (TPR) | Enables self-starting from rectified AC without auxiliary winding; eliminates need for separate startup circuitry |
| 3.3 V linear regulator with 50 mV load regulation | Maintains MCU supply stability across 10–25 mA load step changes, critical for real-time firmware execution |
| 60 mA source / 120 mA sink gate driver | Directly drives MOSFETs up to Qg ≈ 15 nC at 300 kHz without external drivers, reducing BOM count |
| UVLO with 5 V hysteresis and 230 µA standby current | Ensures clean power-up sequencing and ultra-low quiescent consumption during deep sleep modes |
| 2 kV HBM ESD protection on all pins | Eliminates need for external TVS diodes on IN and GATE lines in industrial environments |
Applications
| Smart Energy Meters | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Auxiliary power supply for 32-bit ARM Cortex-M MCU and isolated RS-485 transceiver in DIN-rail mounted meter. IC Role / Device Role / Timing Role: Primary gate driver and 3.3 V regulator supplying MCU core, flash, and peripherals from rectified mains. Use Value: Eliminates transformer-based auxiliary supply; reduces footprint by >40% and enables direct AC line connection with <1.2 mA startup current. | Use Scenario: Power management for digital input conditioning circuit in modular PLC backplane. IC Role / Device Role / Timing Role: Generates local 3.3 V rail and drives optocoupler LED driver MOSFETs from 24 V DC field bus. Use Value: Integrates TPR, LDO, and driver in one SO-8 package-reduces component count by 7 parts versus discrete solution. |
| White Goods Control Boards | AC-DC Adapter Auxiliary Supplies |
Use Scenario: MCU power and triac gate drive in washing machine main control board operating from 230 VAC. IC Role / Device Role / Timing Role: Provides regulated 3.3 V for MCU and drives zero-crossing triac gate via GATE pin with 80 ns min pulse width. Use Value: Enables direct AC coupling with no transformer; TPR hysteresis prevents false restart during motor-induced line dips. | Use Scenario: Standby power supply for primary controller in dual-output 12 V / 5 V wall adapter. IC Role / Device Role / Timing Role: Powers auxiliary MCU and drives synchronous rectifier MOSFET during light-load conditions. Use Value: Reduces no-load power to <300 mW via 160 µA UVLO standby current and eliminates dedicated bias winding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar gate driver with integrated regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICE2QS03G | Integrated quasi-resonant controller with 650 V MOSFET; no linear regulator; 500 mA peak gate drive | Designed for primary-side SMPS control-not suitable for standalone MCU supply generation | Select only if full flyback controller functionality required; not drop-in for TD220ID's auxiliary supply role |
| UCC27531DR | Single-channel 5-A gate driver; no regulator, no TPR, no UVLO; 12 V max supply | Requires external 3.3 V LDO and startup circuit; lacks integrated power management functions | Choose when high-speed, high-current driving is needed but system already has robust auxiliary supply |
Compared with ICE2QS03G and UCC27531DR, TD220ID uniquely combines gate drive, 3.3 V regulation, and self-starting TPR in one SO-8 package-making it optimal for space-constrained offline MCU supplies where BOM reduction and startup reliability are critical.
Availability
TD220ID is available at Aetrix Electronics and suitable for smart energy meters, industrial PLC I/O modules, white goods control boards, and AC-DC adapter auxiliary supplies requiring stable component supply across extended temperature ranges.
Supply support for TD220ID 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
TD220ID belongs to ST's "Power Management & High-Voltage Drivers" product line, engineered specifically for self-powered, transformerless auxiliary supplies in microcontroller-based offline applications.
FAQ
What is the maximum allowable capacitance on the VOUT pin?
The TD220ID datasheet specifies an allowed capacitive load range of 0.1 µF to 1 µF on VOUT (Note 1, Electrical Characteristics table). Using 1 µF ceramic capacitor achieves 2 ms settling time and 1 mV RMS noise (100 Hz–100 kHz); values outside this range may cause instability or degraded transient response.
Can TD220ID drive a P-channel high-side MOSFET directly?
No-TD220ID's GATE output is a push-pull stage referenced to VCC and GND, optimized for N-channel MOSFET gate drive. Driving a P-channel high-side switch would require level-shifting and inverted logic; the device lacks built-in high-side floating supply or charge pump for that topology.
What is the purpose of the NC pin (Pin 3) in the SO-8 package?
Pin 3 is designated NC (No Connect) in the TD220ID datasheet and internal die layout. It is electrically unconnected and must remain unbonded and floating. STMicroelectronics recommends leaving it unconnected or grounding it only if required for mechanical stability-no current path or signal function exists.
How does the two-point regulator (TPR) interact with the UVLO circuit?
The TPR and UVLO operate independently: TPR controls VSUP-based charge-pump operation (13.6 V ON / 12.4 V OFF), while UVLO gates all outputs (VOUT, GATE) based on VCC voltage (7.8 V OFF / 15 V ON). During startup, TPR enables initial charging of VCC; once VCC crosses UVLO threshold, full functionality activates-ensuring safe sequencing.
TD220ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Controller, MicroC-Based Off-Line Applications
- Voltage - Input:
- 7.8V ~ 17V
- Number of Outputs:
- 1
- Voltage - Output:
- 3.3V
- Operating Temperature:
- -25°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TD220ID FAQ
1.How can I place an order for TD220ID through Aetrix?
Please submit a Request for Quotation (RFQ) for TD220ID 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 TD220ID reliable?
The price and inventory of TD220ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TD220ID is usually 5 days.
3.What payment methods are accepted for TD220ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TD220ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TD220ID?
TD220ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TD220ID 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 TD220ID?
For technical support, including TD220ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TD220ID requirements.
6.How does Aetrix verify that TD220ID is sourced from the original manufacturer or authorized distributors?
All TD220ID 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 TD220ID meets industry standards.
7.What is the process for return or replacement of TD220ID?
All TD220ID units undergo pre-shipment inspection (PSI). If there is an issue with TD220ID, 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 TD220ID part is unused and in its original packaging.
Return procedure for TD220ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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