LM3203TLX/NOPB

$1.42

Description：IC REG BUCK ADJ 500MA 10USMD
Series：-
Mfr：National Semiconductor
Package：Bulk

SKU:d674b7edc76c Category: Voltage Regulators - DC DC Switching Regulators Brand: National Semiconductor

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Product introduction

LM3203TLX/NOPB is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists National Semiconductor. Its product description is IC REG BUCK ADJ 500MA 10USMD. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LM3203TLX/NOPB

Description：IC REG BUCK ADJ 500MA 10USMD
Series：-
Mfr：National Semiconductor
Package：Bulk
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：2.7V
Voltage - Input (Max)：5.5V
Voltage - Output (Min/Fixed)：0.8V
Voltage - Output (Max)：3.6V
Current - Output：500mA
Frequency - Switching：2MHz
Synchronous Rectifier：Yes
Operating Temperature：-30°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：10-WFBGA
Supplier Device Package：10-TµSMD (1.82x2.17)
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LM3203TLX/NOPB

LM3203TLX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3203TLX/NOPB is a step-down DC-DC converter designed for CDMA and WCDMA RF power amplifiers. It integrates a bypass mode to support low-noise requirements in mobile communication systems. The device operates from a single lithium-ion cell, stepping down input voltages ranging from 3.25V to 5.5V. It features fixed-frequency PWM operation to minimize radio frequency interference. The converter includes current overload protection, thermal overload protection, and a soft-start function. It utilizes an 8-pin lead-free micro SMD package suitable for portable applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrates a bypass mode for RF power amplifier applications
Optimized for powering portable devices from single Li-Ion cells
Features fixed-frequency PWM operation to reduce RF interference

Voltage Regulators - DC DC Switching Regulators Applications

CDMA RF power amplifiers
WCDMA RF power amplifiers
Portable mobile phone applications

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the component origin as National Semiconductor or Texas Instruments, noting that TI acquired National Semiconductor's analog business. Confirm the suffix NOPB indicates lead-free and RoHS compliance. Ensure the package matches the specified 8-pin micro SMD configuration. Cross-reference datasheet revisions to confirm functional equivalence with legacy versions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing power supplies for cellular RF front-ends requiring low noise and compact size. The integrated bypass mode is critical for maintaining signal integrity during specific amplifier operating states. Consider the 2 MHz switching frequency for minimizing external component size while managing EMI constraints in dense PCB layouts.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM320x family of miniature step-down converters. It shares design similarities with the LM3204 and LM3200 but is specifically characterized for CDMA/WCDMA PA supply needs. The transition from National Semiconductor to Texas Instruments resulted in the NOPB suffix replacing older ordering codes.