My Inquiry
My Account
Texas Instruments UC3706J
- Part No.:
- UC3706J
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- -
- Datasheet:
-
UC3706J.pdf
- Description:
- PUSH-PULL BASED MOSFET DRIVER
- Quantity:
- Payment:
- Shipping:
Inventory:111
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
UC3706J from Texas Instruments is a dual-output, high-speed power MOSFET driver IC in a 16-pin CDIP (J-package) with ±1.5A peak output current per channel, 40ns rise/fall time into 1000pF, and operation from 5V to 40V supply. It implements single-ended-to-push-pull conversion via internal flip-flop and supports parallel or push-pull output modes for motor drive and DC-DC converter gate driving.
For engineers reviewing the UC3706J datasheet, UC3706J pinout, UC3706J application, or UC3706J equivalent, this device is selected for high-current, thermally robust gate driving where latched analog shutdown, deadband control, and low cross-conduction are critical - especially in industrial power supplies and half-bridge motor controllers operating at 0°C to +70°C.
Technical Context
The UC3706J integrates dual totem-pole outputs with independent inverting (INV) and non-inverting (N.I.) inputs, enabling flexible signal polarity acceptance and true TTL-compatible thresholds (~1.2V). Its internal flip-flop (enabled by grounding Pin 7) alternates output states for push-pull operation, requiring ≥200ns off-time between transitions.
Protection circuitry includes latched analog shutdown (130mV threshold, common-mode range 0V to VIN–3V), thermal shutdown at 155°C, and an inhibit circuit with user-configurable reference voltage (0.5V–3.5V on Pin 15) to prevent shoot-through in bipolar transistor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current (Peak) | ±1.0A per output (confirmed for J-package; enables direct drive of medium-power MOSFETs without external buffers) |
| Rise/Fall Time | 40ns into 1000pF (ensures fast switching in <100kHz PWM applications with minimal overlap loss) |
| Supply Range | 5V to 40V (VIN and VC rails support wide-input industrial supplies and battery-backed systems) |
| Operating Temp | 0°C to +70°C (commercial-grade rating; defines maximum ambient for continuous 1W dissipation in J-package) |
| Analog Shutdown Threshold | 130mV typical (latched comparator placed close to outputs for rapid fault response during overcurrent events) |
| Inhibit Reference Range | 0.5V to 3.5V (allows programmable deadband timing via external resistor divider on Pin 15) |
| Thermal Shutdown | 155°C (non-latching thermal protection forces both outputs low until junction cools) |
Pinout & Package
UC3706J uses a 16-pin Ceramic Dual-In-Line Package (CDIP-J), rated for 1W power dissipation at TA = 25°C and suitable for through-hole mounting with hermetic sealing. Four ground pins (Pins 4, 5, 12, 13) must be connected to a common ground plane for stable operation and thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | A/B Inhibit Inputs | Enable/disable respective outputs independently; referenced to Pin 15 (INHIBIT REF) |
| 2 | INHIBIT REF | Configures inhibit threshold voltage (0.5V–3.5V); sets deadband timing for shoot-through prevention |
| 3 | STOP NON-INV. | Analog shutdown input (non-inverting); triggers latched fault when voltage exceeds 130mV |
| 6 | INV. INPUT | Inverting digital input; accepts TTL-level signals; controls output A/B phase inversion |
| 7 | FLIP/FLOP | Grounding enables internal toggle logic for alternating push-pull output sequencing |
| 8, 11 | GROUND | Two dedicated ground pins; must connect all four GND pins (4,5,12,13) together for noise immunity |
| 9 | N.I. INPUT | Non-inverting digital input; complements INV input for dual-signal interface flexibility |
| 10 | B OUTPUT | High-current totem-pole output (±1.0A peak); directly drives gate of N-channel MOSFET or PNP transistor |
| 14 | A OUTPUT | High-current totem-pole output (±1.0A peak); symmetric to B Output with matched timing |
| 15 | STOP INV. | Analog shutdown input (inverting); complements STOP NON-INV. for differential fault sensing |
Key Features
| Feature | Design Value |
|---|---|
| Dual 1.5A Totem-Pole Outputs | Enables direct gate drive of discrete power MOSFETs up to 500V/20A in half-bridge configurations without external buffers |
| Internal Flip-Flop with ≥200ns Reset Requirement | Guarantees clean push-pull sequencing in motor H-bridge drivers while preventing simultaneous conduction |
| Latched Analog Shutdown (130mV Threshold) | Provides immediate, irreversible output disable on overcurrent detection - critical for IGBT short-circuit protection |
| Low Cross-Conduction Current Spike (25ns duration) | Minimizes shoot-through energy loss during switching transitions in high-efficiency SMPS designs |
| Thermal Shutdown at 155°C | Protects against sustained overload or poor heatsinking in enclosed industrial enclosures without external sensors |
Applications
| Industrial DC-DC Converters | Brushed DC Motor Controllers |
|---|---|
|
Use Scenario: Driving complementary N-channel MOSFETs in synchronous buck converters delivering 12V@15A. IC Role / Device Role / Timing Role: Gate driver providing matched rise/fall times and deadtime control to minimize conduction losses. Use Value: 40ns switching speed and latched shutdown enable >94% efficiency and cycle-by-cycle overcurrent protection. |
Use Scenario: Controlling direction and speed of 24V brushed DC motors in factory automation actuators. IC Role / Device Role / Timing Role: Dual-output driver implementing H-bridge push-pull mode via FLIP/FLOP pin. Use Value: Internal flip-flop eliminates external logic, reducing BOM count while ensuring safe bidirectional commutation. |
| Power Bipolar Transistor Drivers | Transformer-Coupled MOSFET Drivers |
|
Use Scenario: Driving high-voltage PNP/NPN pairs in linear-regulated HV power supplies (±100V). IC Role / Device Role / Timing Role: Level-shifting driver with analog shutdown for base current limiting and thermal foldback. Use Value: Inhibit circuit with user-set threshold prevents shoot-through during bipolar transistor turn-on delays. |
Use Scenario: Isolated gate drive for full-bridge inverters using pulse transformers and Schottky-clamped outputs. IC Role / Device Role / Timing Role: High-speed driver with slow-recovery internal diodes (shunted externally) for transformer primary drive. Use Value: 40ns edge rates maintain transformer coupling fidelity up to 200kHz; VC rail decouples drive from logic supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UC3706DW | SOIC-16 package; 2W power rating; RoHS-compliant CuNiPdAu finish; MSL Level-2 | Surface-mount assembly; higher thermal performance at elevated ambient; suited for automated PCB production | Select UC3706DW for new designs requiring SMT compatibility and extended temperature margin (0°C to +70°C same as UC3706J) |
| UC2706J | Same CDIP-J package but rated for –40°C to +85°C; 1.5A peak output confirmed; identical pinout and logic | Broader temperature range supports automotive under-hood and outdoor industrial deployments | Choose UC2706J when operating ambient exceeds +70°C or requires extended cold-start capability below 0°C |
Compared with UC3706J, UC3706DW offers superior manufacturability and thermal headroom in compact layouts, while UC2706J extends environmental resilience without changing circuit design - making UC3706J optimal for cost-sensitive, fixed-temperature commercial power systems where hermetic DIP reliability is prioritized over volume production scalability.
Availability
UC3706J is available at Aetrix Electronics and suitable for industrial power supplies, brushed DC motor controllers, and transformer-coupled gate drive circuits requiring stable component supply across legacy and long-lifecycle programs.
Supply support for UC3706J 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 power management technologies, with decades of heritage in high-reliability power control ICs.
The UC3706J belongs to TI's UCx706 family of high-speed dual gate drivers, designed specifically for robust, high-current MOSFET and bipolar transistor interfacing in industrial and instrumentation power stages.
FAQ
What is the maximum continuous output current rating for UC3706J?
The UC3706J is rated for ±500mA steady-state output current per channel under continuous operation at TA = 25°C. Its ±1.0A peak rating applies to transient conditions (e.g., MOSFET gate charging), validated per absolute maximum ratings in the SLUS200A datasheet. Exceeding ±500mA continuously requires derating based on thermal resistance (θJA = 125°C/W for J-package) and board layout.
Does UC3706J support push-pull operation without external components?
Yes, UC3706J supports true push-pull operation internally: grounding Pin 7 (FLIP/FLOP) activates the built-in toggle flip-flop, causing INV and N.I. inputs to alternately drive A and B outputs. This eliminates need for external logic or clock dividers in H-bridge or transformer-coupled topologies - a core feature confirmed in the "CIRCUIT DESCRIPTION" section of SLUS200A.
What is the function of Pins 3 and 15 (STOP NON-INV. and STOP INV.) on UC3706J?
Pins 3 and 15 form a differential analog shutdown pair: STOP NON-INV. (Pin 3) and STOP INV. (Pin 15) feed a latched comparator with 130mV threshold. When the voltage difference exceeds this value, both outputs force low and remain latched until power cycle or reset. This provides fast, localized overcurrent protection - distinct from digital inhibit and confirmed in Electrical Characteristics tables.
Can UC3706J operate from a 5V supply?
Yes, UC3706J can operate from 5V, though the datasheet notes "slight response time degradation" versus 20V operation. VIN must exceed 5V for reliable output enable; below 5V, the internal regulator disables outputs and draws near-zero VC current. This behavior is explicitly documented in the "Supply Voltage" subsection of SLUS200A.
Is UC3706J pin-compatible with UC1706J or UC2706J?
Yes, UC3706J shares identical pinout, terminal functions, and electrical interface with UC1706J and UC2706J - all three belong to the same UCx706 family and use the 16-pin CDIP-J package. Differences lie solely in temperature grade (UC1706J: –55°C to +125°C; UC2706J: –40°C to +85°C; UC3706J: 0°C to +70°C) and output current derating, not pin assignment or logic behavior.
UC3706J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- -
- Channel Type:
- -
- Number of Drivers:
- -
- Gate Type:
- -
- Voltage - Supply:
- -
- Logic Voltage - VIL, VIH:
- -
- Current - Peak Output (Source, Sink):
- -
- Input Type:
- -
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
UC3706J FAQ
1.How can I place an order for UC3706J through Aetrix?
Please submit a Request for Quotation (RFQ) for UC3706J 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 UC3706J reliable?
The price and inventory of UC3706J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UC3706J is usually 5 days.
3.What payment methods are accepted for UC3706J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UC3706J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UC3706J?
UC3706J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UC3706J 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 UC3706J?
For technical support, including UC3706J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UC3706J requirements.
6.How does Aetrix verify that UC3706J is sourced from the original manufacturer or authorized distributors?
All UC3706J 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 UC3706J meets industry standards.
7.What is the process for return or replacement of UC3706J?
All UC3706J units undergo pre-shipment inspection (PSI). If there is an issue with UC3706J, 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 UC3706J part is unused and in its original packaging.
Return procedure for UC3706J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UC3706J Tags
-
ZXGD3009E6TA
Diodes Incorporated
-
1EDN7512BXTSA1
Infineon Technologies
-
UCC27517DBVR
Texas Instruments
-
MCP1416T-E/OT
Microchip Technology
-
MCP1402T-E/OT
Microchip Technology
-
MCP1415T-E/OT
Microchip Technology
-
MCP1401T-E/OT
Microchip Technology
-
IX4428NTR
Littelfuse Inc.
-
IRS2005STRPBF
Infineon Technologies
-
IRS2008STRPBF
Infineon Technologies
-
IX4310TTR
Littelfuse Inc.
-
2EDN7524RXTMA1
Infineon Technologies
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
