My Inquiry
My Account
Texas Instruments UCC27325DR
- Part No.:
- UCC27325DR
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
UCC27325DR.pdf
- Description:
- IC GATE DRVR LOW-SIDE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,590
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
UCC27325DR from Texas Instruments is a dual low-side MOSFET driver with one inverting and one noninverting output channel, delivering ±4-A peak gate drive current at the Miller plateau region, operating from 4.5 V to 15 V supply, and featuring TTL/CMOS-compatible inputs independent of VDD - used to drive N- and P-channel power MOSFETs in synchronous rectification stages of high-frequency DC-DC converters.
For engineers reviewing the UCC27325DR datasheet, UCC27325DR pinout, UCC27325DR application, or UCC27325DR equivalent, this page delivers verified functional identity, SOIC-8 package mapping, confirmed switching timing (20 ns rise / 15 ns fall @ 1.8 nF), thermal resistance (107.3°C/W), and real-world substitution guidance for industrial power design validation.
Technical Context
The UCC27325DR implements a Bi-CMOS hybrid output stage combining bipolar and MOSFET transistors in parallel to sustain ±4-A peak sourcing/sinking capability even at low VDD (≥4.5 V), minimizing shoot-through risk while maintaining constant-current behavior during Miller plateau transitions. Its input stage features wide hysteresis (VIN_H = 1.6–2.5 V, VIN_L = 0.8–1.5 V) and 500-mA reverse-current tolerance.
Channel A is inverting (driving external P-channel MOSFETs), Channel B is noninverting (driving external N-channel MOSFETs); both outputs swing rail-to-rail (GND to VDD) with matched propagation delays (TD1 = 25–40 ns, TD2 = 35 ns typ). The device supports paralleling of OUTA/OUTB for 8-A aggregate drive when inputs are tightly coupled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | ±4 A at Miller plateau - enables fast turn-on/turn-off of high-Qg MOSFETs without external boost circuitry |
| Rise/Fall Time | 20 ns / 15 ns @ 1.8 nF load - ensures sub-50 ns edge control for >1 MHz switching topologies |
| Supply Voltage Range | 4.5 V to 15 V - compatible with 5 V, 12 V, and 15 V bias rails across industrial and telecom power systems |
| Input Threshold Logic | TTL/CMOS-compatible, VDD-independent - accepts 3.3 V or 5 V logic inputs regardless of VDD setting |
| Propagation Delay | 25–40 ns (rising), 35 ns (falling) - tight delay matching (<15 ns skew) supports precise dual-gate timing |
| Junction Temp Range | –40°C to +125°C - qualified for under-hood automotive auxiliary supplies and industrial UPS environments |
| Thermal Resistance | RθJA = 107.3°C/W (SOIC-8) - requires minimal heatsinking in <5 W dissipation applications |
Pinout & Package
UCC27325DR is housed in an 8-pin SOIC (D) package (4.90 mm × 3.91 mm), thermally optimized for surface-mount reflow and board-level power integrity. The PowerPAD variant (DGN) is not applicable to this DR-suffixed part.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| N/C (Pin 1) | No internal connection | Must remain unconnected; no routing or grounding required |
| INA (Pin 2) | Inverting input A | Drives OUTA with logic inversion; must be tied to VDD or GND if unused - never left floating |
| GND (Pin 3) | Power ground reference | Low-inductance connection point to MOSFET source; critical for Miller clamping stability |
| INB (Pin 4) | Noninverting input B | Drives OUTB directly; same hysteresis and noise immunity as INA |
| N/C (Pin 8) | No internal connection | Electrically isolated; no PCB trace or pad needed |
| OUTA (Pin 7) | Inverting output A | Sinks/sources ±4 A to drive P-channel MOSFET gates; rail-to-rail swing (GND–VDD) |
| OUTB (Pin 5) | Noninverting output B | Sinks/sources ±4 A to drive N-channel MOSFET gates; matched timing to OUTA |
| VDD (Pin 6) | Positive supply input | Requires local 0.1 µF ceramic + 1 µF bulk bypass; supports up to 15 V transient |
Key Features
| Feature | Design Value |
|---|---|
| Bi-CMOS hybrid output stage | Enables ±4-A drive at low VDD (4.5 V) by combining bipolar speed with MOSFET efficiency |
| Independent TTL/CMOS input thresholds | Logic compatibility maintained across full 4.5–15 V VDD range - eliminates level-shifter need |
| Wide input hysteresis (≥0.4 V) | Rejects >200 mV noise spikes on PWM lines without external Schmitt triggers |
| Matched propagation delays | TD1/TD2 skew <15 ns ensures synchronous dual-MOSFET switching in half-bridge configurations |
| Output paralleling support | OUTA/OUTB can be wired together (with matched layout) for 8-A single-channel drive without derating |
Applications
| Server VRM Control | Industrial DC-DC Converter |
|---|---|
|
Use Scenario: Driving parallel N- and P-channel MOSFETs in multiphase buck converters supplying CPU core voltage. IC Role / Device Role / Timing Role: UCC27325DR provides independent, phase-aligned gate drive to upper (P-ch) and lower (N-ch) FETs with matched delays and rail-to-rail swing. Use Value: Enables <100 ns dead-time control and reduces body-diode conduction loss in high-current (>100 A) VRMs. |
Use Scenario: Gate driving in isolated forward or half-bridge DC-DC modules for factory automation PLCs. IC Role / Device Role / Timing Role: UCC27325DR acts as a dual-channel buffer between PWM controller and primary-side MOSFETs, handling 4-A Miller current peaks. Use Value: Eliminates need for discrete transistor drivers; supports 500 kHz operation with <25 ns propagation uncertainty. |
| Solar Microinverter Half-Bridge | UPS Synchronous Rectifier |
|
Use Scenario: Driving complementary MOSFET pairs in microinverter H-bridge output stages interfacing PV panels to grid. IC Role / Device Role / Timing Role: UCC27325DR's inverting/noninverting outputs directly control high-side P-ch and low-side N-ch switches without external inverters. Use Value: Reduces component count vs. dual noninverting drivers + external inverter; maintains <1% duty-cycle error at 100 kHz. |
Use Scenario: Dual-gate drive for synchronous rectification in online double-conversion UPS inverters. IC Role / Device Role / Timing Role: UCC27325DR replaces discrete driver pairs to control two N-channel MOSFETs in parallel-leg rectification paths. Use Value: Cuts gate-drive loop inductance by 40% vs. discrete solutions; sustains 4-A peak current at 125°C junction temp. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-side MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC27324DR | Dual noninverting outputs only; identical pinout, specs, and SOIC-8 package | Requires external inverter for P-channel drive; unsuitable where mixed logic polarity is mandatory | Select UCC27324DR only when both channels drive N-channel devices exclusively |
| LM5113SDX/NOPB | Single-channel, 5-A peak, 3.5–14 V supply; WSON-8 package (3×3 mm), no PowerPAD | Lacks second channel; requires two units for dual-drive; higher RθJA (120°C/W) limits power density | Choose LM5113SDX/NOPB only for space-constrained designs where channel independence is unnecessary |
Compared with UCC27324DR and LM5113SDX/NOPB, the UCC27325DR uniquely delivers mixed-polarity drive in a single SOIC-8 package - eliminating external logic and reducing PCB area by 30% in synchronous rectifier and half-bridge topologies requiring complementary gate control.
Availability
UCC27325DR is available at Aetrix Electronics and suitable for switch-mode power supplies, solar microinverters, and industrial UPS systems requiring stable component supply, long-term lifecycle assurance, and TI-qualified automotive-grade reliability.
Supply support for UCC27325DR 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 ICs, with over 50 years of innovation in high-reliability power conversion components.
The UCC27325DR belongs to TI's UCCx732x dual MOSFET driver product line, engineered specifically for high-efficiency, high-frequency power stages where precise Miller-region current delivery and mixed-output logic are essential.
FAQ
What is the logic configuration of UCC27325DR?
The UCC27325DR features one inverting output (OUTA, driven by INA) and one noninverting output (OUTB, driven by INB). This configuration allows direct control of complementary P-channel and N-channel MOSFETs without external inverters. Its truth table confirms OUTA = NOT(INA) and OUTB = INB across the full –40°C to +125°C operating range.
Can UCC27325DR drive both N-channel and P-channel MOSFETs simultaneously?
Yes - UCC27325DR is explicitly designed for this use case. OUTA (inverting) drives P-channel MOSFETs with logic-high input producing gate-low output, while OUTB (noninverting) drives N-channel MOSFETs with logic-high input producing gate-high output. Both outputs deliver ±4-A peak current and rail-to-rail swing (GND to VDD).
What is the maximum capacitive load UCC27325DR can drive with specified timing?
The UCC27325DR's 20 ns rise / 15 ns fall times are characterized at 1.8 nF load per channel. It reliably drives up to 10 nF loads with <40 ns edges (per Figure 6-1), supporting high-Qg MOSFETs like CSD18540Q5B (Qg = 42 nC). For loads >10 nF, external gate resistors may be added to manage EMI without compromising Miller current delivery.
Does UCC27325DR require external pull-up or pull-down resistors on its inputs?
No - UCC27325DR inputs have built-in hysteresis and TTL/CMOS-compatible thresholds; however, unused inputs (INA or INB) must be hard-wired to either VDD or GND. Leaving them floating risks undefined output states and potential shoot-through in driven MOSFETs. No external resistors are needed for proper logic operation.
Is UCC27325DR pin-compatible with other UCC2732x variants?
Yes - all UCC2732x variants (UCC27323DR, UCC27324DR, UCC27325DR) share identical SOIC-8 (D) pinout, footprint, and thermal characteristics. Only the logic function differs: UCC27323DR is dual-inverting, UCC27324DR is dual-noninverting, and UCC27325DR is mixed. PCBs designed for one can accept any variant without layout change.
UCC27325DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- Low-Side
- Channel Type:
- Independent
- Number of Drivers:
- 2
- Gate Type:
- N-Channel, P-Channel MOSFET
- Voltage - Supply:
- 4.5V ~ 15V
- Logic Voltage - VIL, VIH:
- 1V, 2V
- Current - Peak Output (Source, Sink):
- 4A, 4A
- Input Type:
- Inverting, Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 20ns, 15ns
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
UCC27325DR FAQ
1.How can I place an order for UCC27325DR through Aetrix?
Please submit a Request for Quotation (RFQ) for UCC27325DR 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 UCC27325DR reliable?
The price and inventory of UCC27325DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCC27325DR is usually 5 days.
3.What payment methods are accepted for UCC27325DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCC27325DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCC27325DR?
UCC27325DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCC27325DR 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 UCC27325DR?
For technical support, including UCC27325DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCC27325DR requirements.
6.How does Aetrix verify that UCC27325DR is sourced from the original manufacturer or authorized distributors?
All UCC27325DR 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 UCC27325DR meets industry standards.
7.What is the process for return or replacement of UCC27325DR?
All UCC27325DR units undergo pre-shipment inspection (PSI). If there is an issue with UCC27325DR, 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 UCC27325DR part is unused and in its original packaging.
Return procedure for UCC27325DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCC27325DR 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…
