My Inquiry
My Account
Analog Devices Inc. LTC4442IMS8E#PBF
- Part No.:
- LTC4442IMS8E#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Gate Drivers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC4442IMS8E#PBF.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:915
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC4442IMS8E#PBF from Analog Devices (formerly Linear Technology) is a high-frequency dual N-channel MOSFET gate driver for synchronous buck DC/DC converters, featuring 2.4A peak pull-up and 5A peak pull-down current, adaptive shoot-through protection, and separate logic supply (VLOGIC) for PWM controller interface compatibility. It operates with VCC from 6V to 9.5V and supports up to 38V input voltage in high-density power modules.
For engineers reviewing the LTC4442IMS8E#PBF datasheet, LTC4442IMS8E#PBF pinout, LTC4442IMS8E#PBF application, or LTC4442IMS8E#PBF equivalent, key selection criteria include undervoltage lockout thresholds (2.60V/2.75V for VLOGIC; 2.60V/3.04V for VCC), 8ns TG fall time into 3nF load, thermally enhanced MSOP-8 package with exposed pad, and three-state input stage enabling shutdown on floating IN.
Technical Context
The LTC4442IMS8E#PBF implements a three-state input buffer referenced to VLOGIC, with VIH/VIL thresholds scaling proportionally to VLOGIC voltage (e.g., VIH(TG) = 3.5V at VLOGIC = 5V). Its level-shifter enables high-side gate drive referenced to TS, supporting bootstrapped operation up to BOOST–TS = 42V.
Adaptive shoot-through protection monitors external MOSFET voltages to prevent simultaneous conduction, while independent undervoltage lockout circuits on VLOGIC and VCC disable both TG and BG outputs when either supply falls below threshold-ensuring safe power stage disable during brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 6V to 9.5V - powers low-side driver directly and high-side via bootstrap diode; sets gate overdrive for RDS(ON) optimization |
| Peak Pull-Down Current (BG) | 5A - enables 5ns fall time into 3nF load, minimizing cross-conduction risk during TS node transients |
| TG Fall Time | 8ns into 3nF - reduces high-side MOSFET switching loss in high-frequency (>500kHz) buck converters |
| VLOGIC UVLO Threshold | 2.65V (falling), 2.75V (rising) - ensures input logic remains valid before enabling gate drive |
| BOOST–TS Max Voltage | 42V - supports high-input-voltage synchronous buck stages up to 38V VIN with margin |
| Operating Temp Range | –40°C to +85°C - qualified for industrial embedded power supplies and telecom infrastructure |
| Thermal Resistance θJA | 40°C/W - achieved only with exposed pad soldered to 2500mm² double-sided copper ground plane |
Pinout & Package
The LTC4442IMS8E#PBF is housed in an 8-lead plastic MSOP package (MS8E) with exposed thermal pad (Pin 9, GND), requiring PCB soldering for rated thermal performance (θJA = 40°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TG (Pin 1) | High-side gate driver output | Swings between TS and BOOST; drives top N-MOSFET gate with 2.4A pull-up / 2.4A pull-down |
| TS (Pin 2) | High-side MOSFET source node | Reference for TG output; connects to switch node; critical for bootstrap capacitor return path |
| BG (Pin 3) | Low-side gate driver output | Swings between VCC and GND; delivers 5A peak pull-down to suppress CGD-induced turn-on |
| GND (Pin 4 & Exposed Pad 9) | Chip ground reference | Common return for VLOGIC, VCC, and internal logic; exposed pad must be soldered for thermal integrity |
| IN (Pin 5) | Three-state PWM input | Floating state triggers internal shutdown; thresholds scale with VLOGIC to match controller logic levels |
| VLOGIC (Pin 6) | Input logic supply | Powers input buffer; sets VIH/VIL thresholds; may be tied to controller supply or VCC for routing simplicity |
| VCC (Pin 7) | Driver supply rail | Powers BG directly and charges BOOST via external diode; bypass capacitor required between VCC–GND |
| BOOST (Pin 8) | Bootstrap supply input | Connects to external capacitor between BOOST–TS; enables high-side drive above ground potential |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive shoot-through protection | Monitors TS and BG voltages to delay MOSFET turn-on until opposite device is fully off, eliminating cross-conduction current |
| Separate VLOGIC supply | Enables input threshold matching to 3.3V or 5V controllers without level-shifting circuitry |
| Three-state input with shutdown mode | Internal resistive divider pulls IN into safe region when controller enable fails, forcing both MOSFETs OFF |
| Thermally enhanced MSOP-8 | Exposed pad reduces junction-to-ambient thermal resistance to 40°C/W with proper PCB layout |
| Undervoltage lockout on dual rails | Independent VLOGIC and VCC UVLO circuits disable outputs if either supply drops below specification |
Applications
| Server VRM Power Stage | Industrial DC/DC Module |
|---|---|
Use Scenario: 12V input to 1.5V/30A output digital step-down converter using LTC7510 controller and dual-phase LTC4442IMS8E#PBF drivers. IC Role / Device Role / Timing Role: Synchronous buck gate driver delivering precise timing-controlled TG/BG signals to RJK0305/RJK0301 MOSFETs with adaptive dead-time control. Use Value: 5A BG pull-down prevents CGD coupling-induced false turn-on during fast TS node rise, maintaining >92% efficiency at 500kHz. | Use Scenario: Compact 48V-to-12V isolated intermediate bus converter in programmable logic controller (PLC) backplane. IC Role / Device Role / Timing Role: High-side/low-side gate driver operating with 38V max input, leveraging BOOST–TS = 42V rating for robustness against input transients. Use Value: VLOGIC-referenced input thresholds ensure reliable PWM interface with 3.3V FPGA-based controllers across –40°C to +85°C. |
| Telecom Rectifier Module | Automotive ADAS Power Supply |
Use Scenario: 54V telecom rectifier output stage driving parallel N-MOSFETs in non-isolated buck configuration. IC Role / Device Role / Timing Role: Dual-gate driver providing 2.4A/5A drive strength to minimize gate charge losses in high-current, high-frequency operation. Use Value: 8ns TG fall time into 3nF load reduces switching transition time, cutting conduction loss by 18% vs. legacy drivers at 1MHz. | Use Scenario: 12V battery-fed 5V/10A camera power supply in automotive surround-view system with strict EMI requirements. IC Role / Device Role / Timing Role: Gate driver with minimized trace inductance path (short/wide traces to MOSFET gates) and exposed-pad thermal management. Use Value: Exposed pad soldered to chassis ground achieves 40°C/W θJA, keeping junction temperature <115°C at full load in 85°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC4442EMS8E#PBF | Same electrical specs but rated for 0°C to 85°C operation (vs. –40°C to 85°C for I-grade) | Suitable for commercial-temperature environments only; not qualified for extended industrial cold start | Select LTC4442IMS8E#PBF for designs requiring guaranteed operation down to –40°C. |
| LTC4442IMS8E-1#PBF | Higher VCC UVLO thresholds (5.3V/6.2V) and wider hysteresis (850mV) vs. LTC4442IMS8E#PBF (2.60V/3.04V, 160mV) | Optimized for higher-VCC buck stages where tighter VCC regulation is impractical | Choose LTC4442IMS8E-1#PBF when VCC is derived from unregulated auxiliary rail with >±10% tolerance. |
Compared with LTC4442EMS8E#PBF, the LTC4442IMS8E#PBF guarantees full-spec operation at –40°C and offers tighter VLOGIC/VCC UVLO hysteresis for stable startup in noisy industrial environments; versus LTC4442IMS8E-1#PBF, it provides lower UVLO thresholds suited for tightly regulated 7V–8V VCC rails in high-efficiency point-of-load converters.
Availability
LTC4442IMS8E#PBF is available at Aetrix Electronics and suitable for server VRM power stages, industrial DC/DC modules, and telecom rectifier designs requiring stable component supply, guaranteed –40°C to +85°C operation, and high-current gate drive capability.
Supply support for LTC4442IMS8E#PBF 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
Analog Devices, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management ICs, serving precision instrumentation, industrial automation, and communications markets.
The LTC4442IMS8E#PBF belongs to Linear's high-speed power MOSFET driver product line, engineered specifically for high-efficiency, high-frequency synchronous buck converters in space-constrained and thermally demanding applications.
FAQ
What is the function of the three-state input stage in the LTC4442IMS8E#PBF?
The three-state input stage in the LTC4442IMS8E#PBF interprets IN voltage relative to VLOGIC-derived thresholds: high IN turns on TG, low IN turns on BG, and floating IN triggers internal shutdown pulling both TG and BG low. This eliminates need for external enable circuitry and ensures fail-safe MOSFET disable during controller power-up or fault conditions, directly enhancing system reliability in the LTC4442IMS8E#PBF.
How does the adaptive shoot-through protection in LTC4442IMS8E#PBF differ from fixed dead-time schemes?
The adaptive shoot-through protection in LTC4442IMS8E#PBF dynamically monitors TS and BG node voltages to delay turn-on of one MOSFET until the other is confirmed fully off-unlike fixed dead-time schemes that waste conduction time. This real-time detection prevents cross-conduction without sacrificing efficiency, making the LTC4442IMS8E#PBF ideal for variable-frequency and high-dV/dt synchronous buck applications.
Why is the exposed thermal pad (Pin 9) mandatory for LTC4442IMS8E#PBF operation?
The exposed thermal pad (Pin 9) on the LTC4442IMS8E#PBF is electrically GND and thermally critical: without soldering it to a ≥2500mm² double-sided copper ground plane, θJA degrades from 40°C/W to >80°C/W, risking thermal shutdown above 65°C ambient. Proper pad connection ensures sustained 5A BG pull-down current and long-term reliability in the LTC4442IMS8E#PBF.
Can LTC4442IMS8E#PBF drive MOSFETs with gate charge exceeding 100nC?
Yes-the LTC4442IMS8E#PBF can drive high-QG MOSFETs: its 2.4A peak pull-up and 5A peak pull-down currents deliver rapid dV/dt into large capacitive loads. For a 120nC MOSFET at 500kHz, gate charge loss is ≈2(VCC)(QG)(fIN) = 2×7V×120nC×500kHz = 84mW, well within the LTC4442IMS8E#PBF's thermal budget when properly heatsinked.
What is the maximum allowable BOOST–TS voltage for LTC4442IMS8E#PBF, and how is it enforced?
The absolute maximum BOOST–TS voltage for LTC4442IMS8E#PBF is 42V, specified in Absolute Maximum Ratings. This limit is enforced by internal clamp structures-not by active regulation-so external design must ensure BOOST never exceeds TS + 42V under all transients, including ringing. Exceeding this risks permanent damage to the LTC4442IMS8E#PBF high-side level-shifter circuitry.
LTC4442IMS8E#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- Half-Bridge
- Channel Type:
- Synchronous
- Number of Drivers:
- 2
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 6V ~ 9.5V
- Logic Voltage - VIL, VIH:
- -
- Current - Peak Output (Source, Sink):
- 2.4A, 2.4A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 42 V
- Rise / Fall Time (Typ):
- 12ns, 8ns
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP-EP
LTC4442IMS8E#PBF FAQ
1.How can I place an order for LTC4442IMS8E#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4442IMS8E#PBF 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 LTC4442IMS8E#PBF reliable?
The price and inventory of LTC4442IMS8E#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4442IMS8E#PBF is usually 5 days.
3.What payment methods are accepted for LTC4442IMS8E#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4442IMS8E#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4442IMS8E#PBF?
LTC4442IMS8E#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4442IMS8E#PBF 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 LTC4442IMS8E#PBF?
For technical support, including LTC4442IMS8E#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4442IMS8E#PBF requirements.
6.How does Aetrix verify that LTC4442IMS8E#PBF is sourced from the original manufacturer or authorized distributors?
All LTC4442IMS8E#PBF 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 LTC4442IMS8E#PBF meets industry standards.
7.What is the process for return or replacement of LTC4442IMS8E#PBF?
All LTC4442IMS8E#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4442IMS8E#PBF, 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 LTC4442IMS8E#PBF part is unused and in its original packaging.
Return procedure for LTC4442IMS8E#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC4442IMS8E#PBF 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…
