Texas Instruments LM61495Q5RPHRQ1

Overview

LM61495Q5RPHRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive buck converter delivering 5 V fixed output at up to 10 A, with 3 V–36 V input range, 2.2 MHz switching (pin-selectable), and integrated high- and low-side MOSFETs (R_DS(on) = 21 mΩ / 13 mΩ). It powers ADAS camera modules requiring low EMI, stable reset signaling, and thermal robustness in engine bay environments.

For engineers reviewing the LM61495Q5RPHRQ1 datasheet, LM61495Q5RPHRQ1 pinout, LM61495Q5RPHRQ1 application, or LM61495Q5RPHRQ1 equivalent, key selection criteria include its 5 V fixed output accuracy (±1.5%), RESET output with 2.1 ms active delay, dual-side cooling compatibility, and CISPR 25 Class 5 compliance on standard EVM layouts.

Technical Context

This synchronous buck regulator uses adaptive on-time control with internal compensation and supports pin-configurable spread spectrum (±4% Δf) plus adjustable SW node rise time via R_BOOT. Its dual random spread spectrum (DRSS) modulation reduces peak emissions while maintaining <1.5% output voltage accuracy across load and temperature.

The device integrates precision enable (VEN threshold = 1.263 V, hysteresis = 0.5 V), open-drain RESET with UV/OV detection (94–112% of FB), and thermal shutdown (trip = 168°C, recovery = 159°C). It operates from –40°C to +150°C junction temperature and sustains 42 V transients for ≤100 ms.

Key Specifications

Pinout & Package

Package: 16-pin VQFN-HR (RPH), 4.5 mm × 3.5 mm, wettable flanks, dual-side thermal pad for enhanced cooling.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar buck converter applications.

Compared with LM61480Q5RPHRQ1 and LM62460Q5RPHRQ1, the LM61495Q5RPHRQ1 provides 25% higher current capacity and 12% lower R_DS(on), enabling single-chip 10 A solutions in ADAS camera modules where thermal headroom and transient response are critical.

Availability

LM61495Q5RPHRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, instrument cluster, and ADAS camera module designs requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.

Supply support for LM61495Q5RPHRQ1 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 automotive ICs, with decades of automotive qualification expertise and ISO/TS 16949-certified manufacturing.

The LM6x4xx-Q1 product line delivers high-density, low-EMI buck converters for automotive power systems, designed specifically to replace multi-chip solutions in ADAS, infotainment, and body electronics with single-package integration.

FAQ

What is the output voltage tolerance of LM61495Q5RPHRQ1 over temperature and load?

The LM61495Q5RPHRQ1 delivers 5.0 V output with ±1.5% accuracy across –40°C to +125°C ambient and 0–10 A load in PWM mode. This is verified per Section 6.5 Electrical Characteristics (VFB_5V parameter), ensuring reliable operation for automotive MCU cores and sensors without external trimming.

Does LM61495Q5RPHRQ1 support external frequency synchronization?

Yes, LM61495Q5RPHRQ1 supports external clock synchronization via the SYNC/MODE pin. When driven with a clean CMOS clock (200–2200 kHz), it locks within 4.3 ms (tLOCK) and maintains phase alignment - critical for noise-sensitive RF subsystems in telematics units.

How does the RESET output of LM61495Q5RPHRQ1 behave during undervoltage conditions?

The LM61495Q5RPHRQ1 RESET output goes low when FB falls below 94% of nominal (4.7 V), remains asserted for ≥2.1 ms (tRESET_ACT), then releases only after FB rises above 112% (5.6 V). This hysteresis prevents chatter during marginal input conditions and ensures clean system reset sequencing.

Can LM61495Q5RPHRQ1 operate with input voltage below 3.7 V?

LM61495Q5RPHRQ1 requires ≥3.7 V at VIN to start up, but once running, it sustains regulation down to 3.0 V input (VVIN_MIN1). This enables operation during cold-crank events where battery voltage dips to 3.2 V for brief periods, provided output load is reduced.

What thermal derating applies to LM61495Q5RPHRQ1 at 100°C ambient?

With R_θJA = 21.6°C/W on the reference EVM, LM61495Q5RPHRQ1 reaches 150°C junction at ~10 A and 100°C ambient. Derating to 8.5 A is recommended for continuous operation at 100°C ambient to maintain 20°C safety margin below thermal shutdown (168°C trip).