My Inquiry
My Account
Analog Devices Inc. LT1158ISW#PBF
- Part No.:
- LT1158ISW#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
LT1158ISW#PBF.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,948
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT1158ISW#PBF from Analog Devices (formerly Linear Technology) is a half-bridge N-channel power MOSFET driver IC designed to synchronously control two external N-channel MOSFETs in totem-pole configuration. It features adaptive non-overlap gate drive, internal charge pump for top-side DC operation, 150 ns transition time driving 3000 pF, over 500 mA peak output current, and continuous current limit protection on the high-side MOSFET - enabling high-efficiency motor control and synchronous buck regulators.
For engineers reviewing the LT1158ISW#PBF datasheet, LT1158ISW#PBF pinout, LT1158ISW#PBF application, or LT1158ISW#PBF equivalent, key selection considerations include its –40°C to +85°C industrial temperature range, 16-lead wide SOIC package, adaptive shoot-through prevention, V+ supply range of 5 V to 30 V, and integrated fault detection with auto-shutdown/retry capability.
Technical Context
The LT1158ISW#PBF implements dual independent gate drivers with separate feedback and drive pins per side (T GATE DR/T GATE FB and B GATE DR/B GATE FB), enabling precise gate voltage monitoring and sustained DC-level drive via internal charge pump (top side) and 100 µA hold-on current source (bottom side). Its logic input accepts TTL/CMOS levels with 1.4 V threshold and 200 mV hysteresis.
Protection architecture includes adaptive non-overlap timing, VDS-based current limit inhibit (1.2 V threshold), closed-loop 150 mV current limit (typical), and open-collector FAULT output that sinks current when sense voltage exceeds 110 mV. The device operates across 5 V–30 V supply while internally limiting gate-to-source voltage to 14.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5 V to 30 V - supports battery-powered and industrial DC bus systems without external regulation. |
| Peak Output Current | Over 500 mA - sufficient to drive multiple parallel N-channel MOSFETs with fast switching. |
| Transition Time | 150 ns (typ.) driving 3000 pF - enables high-frequency PWM operation up to 100 kHz in motor and regulator applications. |
| Current Limit Threshold | 150 mV (closed-loop, typ.) - sets short-circuit current at ISC = 150 mV / RSENSE, e.g., 10 A with 15 mΩ shunt. |
| Operating Temperature | –40°C to +85°C - qualified for industrial motor drives and embedded power systems. |
| Package | 16-lead plastic wide SOIC (SW) - surface-mount compatible with standard reflow profiles and thermal resistance θJA = 110°C/W. |
| Fault Response | Open-collector FAULT output with 10 mA saturation voltage ≤1 V - allows direct connection to PWM controller soft-start or enable inputs for current-mode loop formation. |
Pinout & Package
LT1158ISW#PBF is housed in a 16-lead plastic wide SOIC (SW) package with exposed pad not electrically connected. Thermal resistance θJA = 110°C/W. Pin 7 is GND; Pins 2 and 10 are tied to V+; Pin 13 is T SOURCE (top-side return); Pin 16 is BOOST (bootstrap supply).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (BOOST DR) | Bootstrap capacitor recharge clamp | Recharges external bootstrap diode/capacitor and clamps boost voltage to 14.5 V above T SOURCE - prevents overcharge during PWM transitions. |
| Pin 4 (ENABLE) | Global driver enable control | Pulling low forces both MOSFETs off regardless of INPUT state; internal 25 µA pull-up enables self-start - supports safe shutdown in multi-phase systems. |
| Pin 5 (FAULT) | Open-collector fault indicator | Sinks current when VSENSE+ – VSENSE– > 110 mV; used to trigger PWM shutdown or retry - enables automatic current-limit recovery without microcontroller intervention. |
| Pin 6 (INPUT) | Logic-level command input | TTL/CMOS-compatible with 0.8 V low / 2.0 V high thresholds and 200 mV hysteresis - immune to noise in noisy motor-drive environments. |
| Pin 13 (T SOURCE) | Top-side driver reference | Connects directly to top MOSFET source and bootstrap capacitor low side - defines floating ground for high-side driver and enables VDS-based current limit inhibit. |
| Pin 15 (T GATE DR) | High-current top-gate drive | Delivers >500 mA peak current to top MOSFET gate through optional series resistor - separates drive path from feedback to avoid oscillation. |
| Pin 14 (T GATE FB) | Top-gate voltage feedback | Direct connection to top MOSFET gate; supplies sustaining current via internal charge pump - ensures stable DC conduction without external bootstrap leakage compensation. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive non-overlap gate drive | Eliminates need for matched MOSFETs or external dead-time circuitry - reduces design complexity and improves reliability in half-bridge topologies. |
| Internal charge pump for top-side DC operation | Maintains gate drive above V+ without external bootstrap components - enables 100% duty cycle operation in synchronous buck converters. |
| Continuous current limit protection | Regulates top MOSFET short-circuit current via closed-loop sensing - limits fault energy and prevents thermal runaway during overload conditions. |
| Auto shutdown and retry capability | FAULT output can be fed back to ENABLE to implement autonomous fault recovery - eliminates need for external watchdog or reset logic in embedded systems. |
| Built-in gate voltage protection | Internally clamps gate-to-source voltage to 14.5 V - protects standard N-channel MOSFETs from overvoltage stress across full 5 V–30 V supply range. |
Applications
| Motor Control in Industrial Actuators | Synchronous Buck Regulators for Embedded Power |
|---|---|
Use Scenario: Driving a 24 V brushed DC motor in automated valve positioning with bidirectional torque and stall detection. IC Role / Device Role / Timing Role: Half-bridge driver controlling complementary N-MOSFET pair; provides adaptive dead-time, current-sense-based stall detection, and fault-limited startup surge. Use Value: Enables precise current-controlled motion without external current-sense amplifiers or discrete protection logic - reducing BOM count and PCB area by 30% versus discrete driver solutions. | Use Scenario: High-efficiency 12 V to 3.3 V, 5 A step-down converter in an industrial IoT gateway requiring >92% efficiency at full load. IC Role / Device Role / Timing Role: Synchronous switch driver replacing Schottky diode; integrates gate drive, current sensing, and fault signaling into single IC. Use Value: Achieves 94% peak efficiency by eliminating diode conduction losses and enabling true current-mode control via FAULT-to-PWM feedback - reduces thermal load by 4.2 W versus diode-based solution. |
| Three-Phase Brushless DC Motor Drive | Battery-Operated Logic-Level MOSFET Control |
Use Scenario: One phase leg of a sensorless BLDC inverter for cordless power tools operating from 18 V Li-ion packs. IC Role / Device Role / Timing Role: Half-bridge stage driver with adaptive shoot-through prevention and VDS-based current limit - coordinates commutation timing and protects against phase-to-phase shorts. Use Value: Supports rapid acceleration without MOSFET matching or external gate resistors - simplifies layout and improves torque consistency across production units. | Use Scenario: Low-voltage (5 V–6 V) motor driver in portable medical pumps using logic-level N-MOSFETs with 2 V VGS(th). IC Role / Device Role / Timing Role: Gate driver optimized for sub-8 V operation; maintains 150 ns transition time and 500 mA drive strength without performance degradation. Use Value: Delivers full switching performance at battery voltages where CMOS drivers fail - extends runtime by enabling efficient operation down to 4.5 V cutoff. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar half-bridge N-channel MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRS21844SPbF | Higher VBS rating (600 V), no internal current limit; requires external sense resistor and comparator for overcurrent protection. | Targeted at high-voltage AC-DC and PFC stages; lacks integrated current-mode loop capability. | Choose IRS21844SPbF only when operating above 60 V bus or needing higher voltage isolation - not suitable as drop-in replacement for current-limited low-voltage motor control. |
| LM5109BMM/NOPB | Fixed 500 ns dead time, no adaptive non-overlap; no internal charge pump - requires external bootstrap diode and capacitor for high-side drive. | Optimized for cost-sensitive DC-DC converters; lacks FAULT output and auto-retry functionality. | Choose LM5109BMM/NOPB for fixed-frequency buck designs where dead time is predictable and fault recovery is handled externally - adds 3 passive components versus LT1158ISW#PBF's integrated solution. |
Compared with IRS21844SPbF and LM5109BMM/NOPB, the LT1158ISW#PBF uniquely integrates adaptive shoot-through prevention, closed-loop current limiting, and auto-shutdown/retry in a single 16-pin SOIC - reducing system-level component count, improving fault resilience, and simplifying layout for industrial motor and synchronous regulator designs.
Availability
LT1158ISW#PBF is available at Aetrix Electronics and suitable for industrial motor control, synchronous buck regulators, three-phase BLDC inverters, and battery-operated logic-level MOSFET applications requiring stable component supply across extended temperature ranges.
Supply support for LT1158ISW#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, formed through the acquisition of Linear Technology in 2017.
The LT1158 product line was developed by Linear Technology specifically for robust, high-efficiency half-bridge gate driving in motor control and switching power supply applications - emphasizing integrated protection, adaptive timing, and simplified system-level design.
FAQ
What is the maximum supply voltage rating for the LT1158ISW#PBF?
The LT1158ISW#PBF has an absolute maximum supply voltage rating of 36 V on Pins 2 and 10 (V+). Operation beyond this voltage risks permanent damage. The device is specified for continuous operation from 5 V to 30 V, with internal gate voltage clamping at 14.5 V to protect connected MOSFETs - making LT1158ISW#PBF suitable for 24 V industrial buses and 30 V battery systems.
Does the LT1158ISW#PBF support 100% duty cycle operation for the high-side MOSFET?
Yes, the LT1158ISW#PBF supports true 100% duty cycle operation for the top-side MOSFET via its on-chip charge pump, which sustains gate drive above V+ without relying on bootstrap capacitor recharge. This capability is confirmed in the Applications Information section and enables use in synchronous buck regulators requiring continuous high-side conduction - a key functional distinction of LT1158ISW#PBF versus basic bootstrap drivers.
How does the LT1158ISW#PBF implement adaptive non-overlap timing?
The LT1158ISW#PBF implements adaptive non-overlap by monitoring gate-to-source voltage on both MOSFETs via dedicated feedback pins (T GATE FB and B GATE FB) before enabling the opposing gate drive. It delays turn-on until the off-state MOSFET's VGS falls below defined thresholds (1.75 V for top, 1.5 V for bottom), eliminating fixed dead-time tuning and MOSFET matching requirements - a core behavior documented in the OPERATION section of the LT1158ISW#PBF datasheet.
Can the LT1158ISW#PBF drive multiple parallel MOSFETs?
Yes, the LT1158ISW#PBF can drive up to four parallel N-channel MOSFETs per side, as verified in the Applications Information section. Its 500 mA peak current and 1000 nC total gate charge delivery capability accommodate combined gate capacitance up to 10,000 pF. Individual gate resistors may be required to suppress high-frequency oscillation - a design detail explicitly addressed for LT1158ISW#PBF in Figure 1 and related text.
What is the purpose of the FAULT output on the LT1158ISW#PBF?
The FAULT output on the LT1158ISW#PBF is an open-collector NPN transistor that sinks current when the sensed voltage across the current shunt (VSENSE+ – VSENSE–) exceeds 110 mV. It enables direct integration into current-mode control loops - for example, connecting FAULT to the soft-start pin of an LT3525 PWM controller forms a self-regulating current limit. This behavior is intrinsic to LT1158ISW#PBF and documented in Figures 3 and 12 of its datasheet.
LT1158ISW#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- 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:
- 5V ~ 30V
- Logic Voltage - VIL, VIH:
- 0.8V, 2V
- Current - Peak Output (Source, Sink):
- 500mA, 500mA
- Input Type:
- Inverting, Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 56 V
- Rise / Fall Time (Typ):
- 130ns, 120ns
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
LT1158ISW#PBF FAQ
1.How can I place an order for LT1158ISW#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1158ISW#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 LT1158ISW#PBF reliable?
The price and inventory of LT1158ISW#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1158ISW#PBF is usually 5 days.
3.What payment methods are accepted for LT1158ISW#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1158ISW#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1158ISW#PBF?
LT1158ISW#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1158ISW#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 LT1158ISW#PBF?
For technical support, including LT1158ISW#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1158ISW#PBF requirements.
6.How does Aetrix verify that LT1158ISW#PBF is sourced from the original manufacturer or authorized distributors?
All LT1158ISW#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 LT1158ISW#PBF meets industry standards.
7.What is the process for return or replacement of LT1158ISW#PBF?
All LT1158ISW#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1158ISW#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 LT1158ISW#PBF part is unused and in its original packaging.
Return procedure for LT1158ISW#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1158ISW#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…
