Texas Instruments LMR16010PDDAR

Overview

LMR16010PDDAR from Texas Instruments is a 60 V, 1 A synchronous step-down DC-DC converter with integrated high-side MOSFET, 40 µA quiescent current, adjustable 200 kHz–2.5 MHz switching frequency, and precision enable input. It delivers stable 0.8–50 V output in automotive battery regulation and industrial power supplies.

For engineers reviewing the LMR16010PDDAR datasheet, LMR16010PDDAR pinout, LMR16010PDDAR application, or LMR16010PDDAR equivalent, key selection criteria include input voltage range (4.3–60 V), thermal performance (R_θJC(bot) = 3.8 °C/W), PGOOD flag accuracy (±2% hysteresis), internal compensation, and HSOIC-8 PowerPAD™ package compatibility with board-level thermal management.

Technical Context

The LMR16010PDDAR implements fixed-frequency peak current mode control with Sleep-mode operation below 300 mA peak switch current, reducing quiescent current to 40 µA at light load. Its internal error amplifier and slope compensation ensure stability across wide duty cycles up to 97%.

It supports dual-mode RT/SYNC pin operation: resistor-programmed frequency (200 kHz–2.5 MHz) or external clock synchronization (250 kHz–2.3 MHz), with PLL lock-in time of 100 µs. The BOOT capacitor recharge circuit enables high-duty-cycle dropout operation without external low-side FET.

Key Specifications

Pinout & Package

LMR16010PDDAR is housed in an 8-pin HSOIC package (4.89 mm × 3.90 mm) with exposed thermal pad (Pin 9), optimized for low thermal resistance and high-power density layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMR14010PDDAR, LMR16010PDDAR adds 20 V input margin and SYNC functionality at identical package size; versus TPS54160DGQR, it trades 0.5 A current headroom for 75% lower quiescent current, integrated PGOOD, and simplified layout - making it optimal for space- and power-constrained 1 A applications.

Availability

LMR16010PDDAR is available at Aetrix Electronics and suitable for automotive battery regulation, industrial power supplies, telecom/datacom systems, and general-purpose wide-Vin regulation requiring stable component supply across long production lifecycles.

Supply support for LMR16010PDDAR 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 company headquartered in Dallas, Texas, designing analog and embedded processing chips for industrial, automotive, and communications markets.

The LMR16010PDDAR belongs to TI's SIMPLE SWITCHER® family of easy-to-use DC-DC converters, engineered for rapid power design with integrated FETs, internal compensation, and robust protection - targeting engineers needing reliable, low-risk buck solutions for harsh-input environments.

FAQ

What is the maximum input voltage rating for the LMR16010PDDAR?

The LMR16010PDDAR has an absolute maximum input voltage rating of 65 V, with recommended operating range from 4.3 V to 60 V. This 60 V upper limit ensures reliable operation under automotive load-dump transients (ISO 7637-2 Pulse 5a) and industrial 48 V bus surges. Exceeding 60 V continuously may trigger UVLO or cause thermal stress beyond design limits.

Does the LMR16010PDDAR require external compensation components?

No, the LMR16010PDDAR features fully internal loop compensation, eliminating the need for external Type II or Type III compensation networks. This simplifies design, reduces BOM count, and ensures stable operation with standard output capacitors (e.g., 47 µF ceramic). Layout still requires proper placement of C_IN, C_BOOT, and C_OUT per the datasheet guidelines.

How does the Sleep-mode function in the LMR16010PDDAR improve efficiency at light load?

The LMR16010PDDAR enters Sleep-mode when peak switch current falls below 300 mA, clamping the internal COMP voltage at 400 mV and halting switching. This reduces input current to 40 µA (typ), cutting gate drive and switching losses. Output voltage droop triggers resumption of switching, maintaining regulation while achieving >85% efficiency at 1 mA load - critical for battery-powered applications.

Can the LMR16010PDDAR synchronize to an external clock, and what are the timing requirements?

Yes, the LMR16010PDDAR supports synchronization via its RT/SYNC pin across 250 kHz–2.3 MHz. The external clock must have high-level ≥1.7 V, low-level ≤0.5 V, and minimum pulse width ≥30 ns. Falling edges trigger PLL lock-in within 100 µs. When sync stops, the device automatically reverts to resistor-programmed mode using the RT-to-GND resistor.

What thermal design considerations apply to the LMR16010PDDAR's HSOIC PowerPAD™ package?

The LMR16010PDDAR's exposed thermal pad (Pin 9) must be soldered to a minimum 1-in² GND copper pour on the PCB. With this, R_θJC(bot) = 3.8 °C/W enables 1 A continuous operation at +85 °C ambient. Avoid thermal relief spokes; use ≥4 thermal vias (0.3 mm diameter) filled with solder to inner GND layers. Junction temperature must stay ≤125 °C under worst-case load and ambient conditions.

How is the output voltage set on the LMR16010PDDAR, and what tolerance impact does resistor selection have?

The LMR16010PDDAR uses a 0.750 V (±1.5%) internal reference. Output voltage is set by a resistor divider (R_FBT/R_FBB) from V_OUT to FB. For 5 V output: R_FBB = 10 kΩ, R_FBT = 56.7 kΩ (1%). Using 1% resistors limits total V_OUT error to ±2.2%; 0.1% resistors reduce this to ±1.6%. Values outside 10–100 kΩ increase noise susceptibility or FB bias current error.