Texas Instruments LM60430AQRPKRQ1

Overview

LM60430AQRPKRQ1 from Texas Instruments is an AEC-Q100-qualified, 3.8-V to 36-V input, 3-A synchronous step-down DC/DC converter in a 3.0 mm × 2.0 mm WQFN-13 package with wettable flanks. It delivers peak efficiency >95%, supports 400 kHz fixed-frequency PWM or PFM operation, and integrates power-good flag (PG), internal 5-V LDO (VCC), and peak-current-mode control for industrial and automotive power rails.

For engineers reviewing the LM60430AQRPKRQ1 datasheet, LM60430AQRPKRQ1 pinout, LM60430AQRPKRQ1 application, or LM60430AQRPKRQ1 equivalent, key selection considerations include its AEC-Q100 qualification, 3-A rated output with 3.85–5.05 A current limit, –40°C to +150°C junction temperature range, low 25 µA quiescent current, and integrated thermal shutdown at 165°C.

Technical Context

The LM60430AQRPKRQ1 uses peak-current-mode control with automatic frequency foldback into PFM at light loads, enabling >90% efficiency at 10 mA (12 V_IN/5 V_OUT). Its enhanced WQFN-13 package minimizes switch-node ringing via ultra-low parasitic inductance and symmetrical VIN/PGND layout for EMI reduction.

It integrates a 5-V internal LDO (VCC), open-drain power-good flag with glitch filtering (60–170 µs), precision enable thresholds (VEN-H = 1.231 V typ), and dual current limiting (peak ISC = 3.85–5.05 A, valley ILIMIT = 2.9–4.1 A) with hiccup-mode short-circuit protection (94 ms off-time).

Key Specifications

Pinout & Package

LM60430AQRPKRQ1 is housed in a 3.0 mm × 2.0 mm WQFN-13 package with PowerPAD™ thermal pad (DAP) and wettable flanks for automated optical inspection. The package features symmetrical VIN/PGND pin placement to cancel magnetic fields and reduce EMI.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down converter applications.

Compared with LM60430DRPKR and LM61430AQRPKRQ1, the LM60430AQRPKRQ1 offers optimal balance of thermal performance, EMI control, and automotive qualification at 400 kHz-making it preferred for thermally dense modules where predictable fixed-frequency timing simplifies system-level noise management.

Availability

LM60430AQRPKRQ1 is available at Aetrix Electronics and suitable for industrial PLC power rails, automotive body control modules, and medical infusion pump controllers requiring stable component supply with AEC-Q100 assurance and long-term production continuity.

Supply support for LM60430AQRPKRQ1 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 technologies with decades of automotive and industrial qualification expertise.

The LM604x0 product line was designed specifically for rugged, space-constrained power conversion in automotive ADAS, body electronics, and industrial automation-emphasizing AEC-Q100 compliance, ultra-small packaging, and low EMI.

FAQ

What is the maximum input voltage rating for LM60430AQRPKRQ1?

The LM60430AQRPKRQ1 has an absolute maximum input voltage rating of 38 V, with recommended operating input range from 3.8 V to 36 V. This allows robust operation across automotive cold-crank (down to 3.8 V) and load-dump (up to 36 V) conditions while maintaining regulation. Exceeding 38 V risks permanent damage per the Absolute Maximum Ratings table.

Does LM60430AQRPKRQ1 require external compensation components?

No, the LM60430AQRPKRQ1 features fully internal loop compensation, eliminating the need for external Type-II or Type-III compensation networks. This reduces bill-of-materials count and PCB area while ensuring stable operation across the full 1 V to 24 V output range with standard 2.2 µH inductors and ceramic output capacitors.

How does the power-good (PG) flag behave during startup and fault conditions for LM60430AQRPKRQ1?

The LM60430AQRPKRQ1 PG flag remains low for ~4 ms after EN assertion, then goes high when VOUT reaches within ±7% of target. It pulls low during undervoltage (VOUT < 93% of setpoint), overcurrent, thermal shutdown, or EN deactivation. A built-in 60–170 µs glitch filter prevents false triggering during transient load steps.

Can LM60430AQRPKRQ1 operate in dropout mode, and what is its minimum dropout voltage?

Yes, the LM60430AQRPKRQ1 operates in dropout when VIN approaches VOUT. At 1 A output and 5 V setting, dropout voltage is 150 mV (VIN – VOUT). The device maintains regulation down to VIN = VOUT + 150 mV by extending duty cycle up to 98%, enabling use in low-headroom applications like post-regulation of 5-V rails from 5.5-V sources.

What thermal management practices are required for LM60430AQRPKRQ1 in high-ambient environments?

For ambient temperatures up to +105°C, LM60430AQRPKRQ1 requires the DAP thermal pad soldered to ≥1 cm² of inner-layer copper ground plane with ≥4 thermal vias (0.3-mm diameter, 0.8-mm pitch). TI's recommended layout achieves R_θJA = 54°C/W; insufficient copper area risks exceeding the 150°C max junction temperature during 3-A continuous operation.