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Overview
| Topology | Buck Converter |
| Input voltage | 2.7-5.5 V |
| Output 1 | 24 V |
Description
The LMR62421 is an easy-to-use, space-efficient 2.1A low-side switch regulator ideal for Boost and SEPIC DC-DC regulation. It provides all the active functions to provide local DC/DC conversion with fast-transient response and accurate regulation in the smallest PCB area. Switching frequency is internally set to 1.6 MHz, allowing the use of extremely small surface mount inductor and chip capacitors while providing efficiencies near 90%. Current-mode control and internal compensation provide ease-of-use, minimal component count, and high-performance regulation over a wide range of operating conditions. External shutdown features an ultra-low standby current of 80 nA ideal for portable applications. Tiny 5-pin SOT-23 and 6-pin WSON packages provide space-savings. Additional features include internal soft-start, circuitry to reduce inrush current, pulse-by-pulse current limit, and thermal shutdown.
Features
- Input Voltage Range of 2.7V to 5.5V
- Output Voltage up to 24V
- Switch Current up to 2.1A
- 1.6 MHz Switching Frequency
- Low Shutdown Iq, 80 nA
- Cycle-by-Cycle Current Limiting
- Internally Compensated
- Internal Soft-Start
- 5-Pin SOT-23 (2.92 x 2.84 x 1mm) and 6-Pin WSON (3 x 3 x 0.8 mm) Packaging
- Fully Enabled for WEBENCH® Power Designer
Typical applications
- LED Applications
- Boost / SEPIC Conversions from 3.3V, 5V Rails, Space Constrained Applications, Embedded Systems
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | L (µH) | ISAT (A) | fres (MHz) | Mount | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | Pins (Value) (pcs) | Rows | H (mm) | Gender | IR (mA) | Packaging | Color | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 150080SS75000 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WL-SMCW SMT Mono-color Chip LED Waterclear | 630 | Super Red | 645 | 60 | 1.9 | AlInGaP | 140 | – | – | – | SMT | – | – | – | – | – | – | – | – | 0.7 | – | – | Tape and Reel | – | ||
 | 742792620 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | – | – | – | – | – | – | – | SMT | 100 | 125 | 450 MHz | 1650 | 0.15 | Wide Band | – | – | 0.8 | – | 500 | – | – | ||
 | 744025003 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TPC SMT Tiny Power Inductor | – | – | – | – | – | – | – | 3.3 | 1.8 | 100 | SMT | – | – | – | – | 0.101 | – | – | – | 2.8 | – | 1500 | – | – | ||
 | 60900213421 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm Multi-Jumper Jumper with Test Point | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1 | – | – | Jumper | 3000 | Bag | Black | |
 | 61300211121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | – | – | – | – | THT | – | – | – | – | – | Straight | 2 | Single | – | Pin Header | 3000 | Bag | – | |
 | 61300311121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | – | – | – | – | THT | – | – | – | – | – | Straight | 3 | Single | – | Pin Header | 3000 | Bag | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 150080SS75000 | SPEC | |
| 742792620 | SPEC | |
| 744025003 | SPEC | |
| 60900213421 | SPEC | – |
| 61300211121 | SPEC | – |
| 61300311121 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | L (µH) | ISAT (A) | fres (MHz) | Mount | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | Pins (Value) (pcs) | Rows | H (mm) | Gender | IR (mA) | Packaging | Color | Samples |
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