STEF033AJR ST Power Switch | 9-UFBGA, FCBGA | 3A, 2.7-5.5V

Product Overview

The STEF033AJR is a fully integrated 3A power switch from STMicroelectronics, designed for high-performance power management in space-constrained applications. Housed in a compact 9-UFBGA/FCBGA package, it offers a low on-resistance of 35mΩ typical, ensuring minimal power loss. The device operates over a wide input voltage range of 2.7V to 5.5V, making it suitable for various low-voltage systems. It integrates overcurrent, overtemperature, and short-circuit protection, along with a controlled slew rate to limit inrush current. The enable pin allows for logic-level control, and the fault flag output provides diagnostic feedback.

Detailed Technical Specifications

Key Features

• Integrated 3A power switch with low RDS(on)
• Wide input voltage range: 2.7V to 5.5V
• Overcurrent, overtemperature, and short-circuit protection
• Controlled slew rate for inrush current limiting
• Enable pin for logic-level control
• Fault flag output (open-drain)
• Undervoltage lockout (UVLO)
• Compact 9-UFBGA/FCBGA package (1.5mm x 1.5mm)
• RoHS compliant

Target Applications

• 5G base station power distribution
• Automotive dashboard and infotainment systems
• Industrial sensors and actuators
• Portable and battery-powered devices
• USB power switches and hubs
• Solid-state drives (SSDs)

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for STEF033AJR. Our core advantages include:

• 24/7 Global Customer Support: Professional team providing instant quotes and technical support worldwide.
• In-stock Inventory, Same-day Shipping: We maintain localized stock; orders confirmed before 4 PM are shipped the same day.
• HK-SZ Synergy, Flexible Settlement: Direct global shipping from Shenzhen with support for HK bank transfers and multi-currency.
• Escrow Secured Transactions: We support Escrow.com for secure transactions, ensuring peace of mind for batch orders.
• BOM Kitting & Sampling Services: Specialized sourcing for testing samples and urgent shortage components.

Quality Assurance & Compliance

Jasin Chip guarantees that all delivered products are 100% original factory stock with full quality assurance and traceability.

• 100% Original & Authentic: All components are guaranteed to be authentic with strict quality control.
• RoHS Compliant: All electronic components comply with international environmental and safety standards.
• Original Factory Packaging: We maintain original factory packaging and seals to ensure ESD protection and physical integrity.

產品概述

STEF033AJR 是意法半导体推出的一款完全集成的3A功率开关，专为空间受限的高性能电源管理应用而设计。采用紧凑的9-UFBGA/FCBGA封装，典型导通电阻低至35mΩ，确保最小功率损耗。该器件在2.7V至5.5V的宽输入电压范围内工作，适用于各种低压系统。它集成了过流、过温和短路保护功能，并具有受控的压摆率以限制浪涌电流。使能引脚支持逻辑电平控制，故障标志输出提供诊断反馈。

詳細技術參數

核心特性

• 集成3A功率开关，低导通电阻
• 宽输入电压范围：2.7V至5.5V
• 过流、过温和短路保护
• 受控压摆率，限制浪涌电流
• 使能引脚，支持逻辑电平控制
• 故障标志输出（开漏）
• 欠压锁定（UVLO）
• 紧凑的9-UFBGA/FCBGA封装（1.5mm x 1.5mm）
• 符合RoHS标准

典型應用場景

• 5G基站电源分配
• 汽车仪表盘和信息娱乐系统
• 工业传感器和执行器
• 便携式和电池供电设备
• USB电源开关和集线器
• 固态硬盘（SSD）

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 STEF033AJR 提供全面的供應鏈與批發解決方案。 我們的核心優勢包括：

• 全天候環球客戶支援：專業團隊為您提供即時報價及技術支援，無需漫長等待。
• 現貨庫存，即日發貨：確保現貨充足。下午 4 點前確認訂單，即可安排當天寄出。
• 深港聯動，結算靈活：深圳直發全球，物流高效可靠；支援香港銀行戶口轉賬及多幣種結算。
• Escrow 擔保交易：支援 Escrow.com 平台交易，保障買賣雙方權益，小批量訂單亦可安心在線下單。
• BOM 配單與樣板服務：提供樣板測試及認證支援。專注一站式 BOM 配套及緊急缺料採購服務。

品質保證與合規

Jasin Chip 承諾所有出貨產品均為原廠正貨，具備完善的品質保證及產品可追溯性。

• 100% 原廠正貨：承諾所有供應零件均為原裝現貨，品質嚴格把關，來源清晰可追溯。
• 符合 RoHS 認證：所有電子元器件均符合國際環保標準及相關安全認證。
• 原廠封裝保護：嚴格保留原廠原始包裝及封條，確保物流過程中的靜電防護 (ESD) 與物理安全。

以上產品均為原廠正貨，提供 BOM 配單及現貨庫存支援，歡迎查詢。

HONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED
Trusted Partner for Automotive, Industrial, and Hard-to-find Components.
WhatsApp: +852 5209 9691 | Email: [email protected]