Texas Instruments LMR62421XSD/NOPB

Mfr. Part

LMR62421XSD/NOPB

Manufacturer

Luminary Micro/Texas Instruments (TI). Y-IC is a quality distributor of this brand and will provide you with genuine products, fast delivery, and professional support.

Detailed Description

SIMPLE SWITCHER DC-DC regulator with internal 2.1A power switch. Operates as Boost or SEPIC. Adjustable positive output from 2.7V up to 24V. Works from 2.7V to 5.5V input. Fixed 1.6MHz switching for small external components. Non-synchronous rectification. One output. Compact 6‑WSON (3x3mm) with exposed thermal pad. RoHS3 compliant. Automotive‑grade temperature capability: −40°C to +125°C (TJ).

Key Features

Input voltage: 2.7V to 5.5V

Adjustable output: 2.7V to 24V

Internal switch current: 2.1A (peak/switch)

Topologies: Boost and SEPIC (step-up or step-up/step-down)

Output configuration: Positive, adjustable

Switching frequency: 1.6MHz (fixed)

Outputs: 1

Synchronous rectifier: No (uses external diode)

Package: 6-WSON (3x3) with exposed pad; surface-mount

Series: SIMPLE SWITCHER

Operating temperature (TJ): −40°C to +125°C

RoHS: ROHS3 Compliant

Shipment format: Tape & Reel (TR)

Key Advantages

Wide output range up to 24V from common 3.3V/5V rails

SEPIC option handles input above or below the desired output

High 1.6MHz switching reduces inductor and capacitor size

Small 3x3mm package saves board space

Exposed pad improves heat dissipation for reliable high-load operation

SIMPLE SWITCHER architecture simplifies design and compensation

Broad ecosystem and documentation from TI; reliable sourcing via Y-IC

Packaging

Type: Surface-mount integrated circuit (monolithic regulator)

Shipment: Tape & Reel (TR) for automated assembly

Package outline: 6-WSON (3x3mm) / 6-WDFN with exposed thermal pad

Terminals: 6 pins plus center exposed pad (connect pad to ground plane for thermal and electrical performance; see datasheet for exact pinout and layout)

Materials and compliance: Lead-free, RoHS3 compliant molded plastic over copper leadframe

Size: Body 3mm × 3mm nominal; ultra-low profile

Thermal characteristics: Exposed pad for low thermal resistance; proper PCB copper area and vias recommended for heat spreading

Electrical properties (at a glance): 2.7–5.5V input, 2.7–24V adjustable output, 2.1A internal switch, 1.6MHz switching frequency, non-synchronous topology

Lifecycle

Status: Active and in ongoing production per public information at the time of writing. Not approaching discontinuation.

Cross and alternatives (selection depends on your exact input/output, current, efficiency, and size needs; not drop-in):

- From TI boost family: TPS61023, TPS61022, TPS61175 (higher-power options), LMR64010 (1A boost), LMR62014 (600mA boost)

- From TI SEPIC/boost controllers/regulators: LM2621 (controller), TPS61170/TPS61171 series (integrated boost)

- For true drop-in or closest substitutes, please contact Y-IC. We will match parameters, package, and pinout to your design.

If you need verified equivalents or pin-compatible replacements, contact our sales team via the Y-IC website for a tailored cross-reference.

Key Application Areas

Generate 9V, 12V, 15V, or 24V rails from 3.3V/5V inputs

Portable and handheld instruments powered from single Li‑ion or 5V

USB-powered peripherals needing higher voltages (e.g., 12V)

Bias rails for sensors, data-converters, RF modules, and industrial I/O

SEPIC solutions where input can be above or below output (ride-through for brownouts)

Small embedded systems, meters, POS terminals, networking modules

Datasheet

Y-IC hosts the most authoritative and up-to-date datasheet for LMR62421XSD/NOPB on this product page. Download it now for pinout, reference designs, layout guidance, and thermal recommendations.

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