Analog Devices Inc. LTC7000IMSE-1#PBF

Overview

LTC7000IMSE-1#PBF from Analog Devices is a high-voltage, fast-turning high-side N-channel MOSFET gate driver IC designed for static and switching applications up to 135V input. It integrates an internal charge pump enabling 100% duty cycle operation, features 1Ω pull-down / 2.2Ω pull-up gate drive strength, 35ns propagation delay, and adjustable overcurrent protection with fault flag output. It is used in industrial load switching, electronic valve control, and high-frequency high-side gate driving where robust short-circuit protection and fast transient response are required.

For engineers reviewing the LTC7000IMSE-1#PBF datasheet, LTC7000IMSE-1#PBF pinout, LTC7000IMSE-1#PBF application, or LTC7000IMSE-1#PBF equivalent, this page delivers verified technical context, exact pin functions, real-world design meaning of specifications, and validated alternative options - all grounded in the official Rev. F datasheet and Analog Devices' product documentation.

Technical Context

The LTC7000IMSE-1#PBF implements a level-shifted, charge-pump-based gate driver architecture that supports continuous high-side NMOS switching at up to 135V VIN while maintaining full gate enhancement via BST-TS regulation at 12V. Its internal comparator monitors ΔVSNS across an external sense resistor to trigger overcurrent shutdown after a programmable timer delay.

Unlike the LTC7000 variant, the LTC7000-1 family (including LTC7000IMSE-1#PBF) omits RUN, OVLO, ISET, and IMON pins - eliminating adjustable UVLO/OVLO, current threshold programming, and current monitoring. Fault response is simplified: TIMER capacitor sets retry timing, and FAULT asserts open-drain low upon overcurrent detection.

Key Specifications

Pinout & Package

Package: 16-lead plastic MSOP (MSE16), thermally enhanced with exposed GND pad (Pin 17) requiring PCB soldering for rated thermal performance (θJC = 10°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side NMOS gate driver applications.

Compared with LM5109BMAX/NOPB and TPS28225DR, the LTC7000IMSE-1#PBF uniquely combines 135V operation, integrated charge pump for 100% duty cycle, and autonomous overcurrent fault management - making it irreplaceable in high-reliability, high-voltage static switching where protection autonomy and voltage margin are non-negotiable.

Availability

LTC7000IMSE-1#PBF is available at Aetrix Electronics and suitable for industrial load switching, electronic valve control, and automotive power distribution requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.

Supply support for LTC7000IMSE-1#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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC7000/LTC7000-1 product line was engineered specifically for robust, high-voltage high-side NMOS gate driving in harsh environments - emphasizing fault resilience, wide input range, and thermal reliability over general-purpose logic-level driving.

FAQ

What is the maximum input voltage rating for the LTC7000IMSE-1#PBF?

The LTC7000IMSE-1#PBF has an absolute maximum VIN rating of 150V, with guaranteed operation from 3.5V to 135V. This 135V operating ceiling enables reliable use in industrial 100V DC systems and automotive 24V/48V architectures with substantial transient margin per ISO 7637-2 and IEC 61000-4-5 standards. Exceeding 135V continuously risks violating the specified operating range, though the 150V absolute max provides limited surge headroom.

Does the LTC7000IMSE-1#PBF support 100% duty cycle operation?

Yes, the LTC7000IMSE-1#PBF supports true 100% duty cycle operation via its integrated charge pump, which regulates the BST–TS voltage to 12V independent of VIN. This ensures the external high-side NMOS remains fully enhanced even during sustained ON states - a critical capability absent in bootstrap-only drivers that fail above ~95% duty cycle. The charge pump draws minimal quiescent current and requires no external components beyond the BST–TS capacitor.

How does overcurrent protection work on the LTC7000IMSE-1#PBF?

The LTC7000IMSE-1#PBF detects overcurrent by measuring ΔVSNS across an external sense resistor connected between SNS+ and SNS–. With ISET unconnected, the current threshold is fixed at 30mV. When ΔVSNS exceeds this value, the internal comparator triggers the TIMER pin circuitry: after a delay set by CTIMER, TGDN pulls to TS to disable the MOSFET, FAULT asserts low, and an automatic retry occurs after cooldown. No external controller is needed for this autonomous protection loop.

What is the purpose of the TIMER pin on the LTC7000IMSE-1#PBF?

The TIMER pin on the LTC7000IMSE-1#PBF accepts an external capacitor to GND that defines three critical timing intervals: fault warning duration (before FAULT asserts), fault turn-off delay (before TGDN pulls low), and auto-retry cooldown period. A typical 1nF capacitor yields ~100ms total fault window. Connecting TIMER above 3.5V disables timing and forces immediate TGDN-to-TS shutdown - useful for hard fault conditions where no retry is acceptable.

Is the LTC7000IMSE-1#PBF pin-compatible with the LTC7000IMSE#PBF?

No, the LTC7000IMSE-1#PBF is not pin-compatible with the LTC7000IMSE#PBF. The -1 suffix denotes removal of RUN, OVLO, ISET, and IMON pins (Pins 1, 4, 9, and 10). These pins are NC on the LTC7000IMSE-1#PBF, altering the functional pin map. PCB layout must be redesigned to accommodate the simplified 12-pin active interface (excluding four NC positions), and external circuitry for UVLO, OVLO, and current monitoring must be omitted or relocated.