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Product Overview
The TPS73HD318PWPR from Texas Instruments is a dual-output low-dropout (LDO) voltage regulator designed for applications requiring two independent regulated voltages. It provides a fixed 3.3V output at 750mA and a fixed 1.8V output at 350mA, with high accuracy and low dropout voltage. The device is housed in a 28-pin HTSSOP package with PowerPAD for enhanced thermal performance. It features enable pins for each output, undervoltage lockout (UVLO), overcurrent protection, and thermal shutdown, making it suitable for powering DSPs, FPGAs, and other mixed-voltage systems.
Detailed Technical Specifications
| Parameter |
Value |
| Output Voltage (VOUT1) |
3.3V (fixed) |
| Output Voltage (VOUT2) |
1.8V (fixed) |
| Output Current (IOUT1) |
750mA |
| Output Current (IOUT2) |
350mA |
| Dropout Voltage (VOUT1) |
350mV typ at 750mA |
| Dropout Voltage (VOUT2) |
250mV typ at 350mA |
| Input Voltage Range |
2.7V to 10V |
| Line Regulation |
0.03%/V typ |
| Load Regulation |
0.5% typ |
| Quiescent Current |
340µA typ (both outputs enabled) |
| PSRR |
60dB at 1kHz |
| Operating Temperature |
-40°C to +125°C |
| Package |
28-HTSSOP (PowerPAD) |
Key Features
- Dual output LDO with independent enable pins
- Fixed 3.3V and 1.8V outputs
- High output current: 750mA and 350mA
- Low dropout voltage: 350mV and 250mV
- Low quiescent current: 340µA typical
- Excellent line and load regulation
- Built-in UVLO, overcurrent, and thermal protection
- PowerPAD package for improved thermal dissipation
- Stable with ceramic output capacitors
Target Applications
- 5G base stations: powering FPGA cores and I/O banks
- Automotive dashboard: supplying 3.3V for MCU and 1.8V for display driver
- Industrial control systems: dual voltage rails for PLC modules
- Networking equipment: powering SoC and memory
- Medical devices: low-noise power for analog and digital sections
Global Supply Chain & Wholesale Solutions
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TPS73HD318PWPR. Our core advantages include:
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and seals to ensure ESD protection and physical integrity.
產品概述
TPS73HD318PWPR 是德州儀器(TI)推出的雙路輸出低壓差穩壓器(LDO),專為需要兩路獨立穩壓電壓的應用設計。它提供固定的 3.3V/750mA 和 1.8V/350mA 輸出,具有高精度和低壓差特性。器件採用帶有 PowerPAD 的 28 引腳 HTSSOP 封裝,以增強散熱性能。內置每個輸出的使能引腳、欠壓鎖定(UVLO)、過流保護和熱關斷功能,適用於 DSP、FPGA 及其他混合電壓系統的供電。
詳細技術參數
| 參數 |
數值 |
| 輸出電壓 (VOUT1) |
3.3V (固定) |
| 輸出電壓 (VOUT2) |
1.8V (固定) |
| 輸出電流 (IOUT1) |
750mA |
| 輸出電流 (IOUT2) |
350mA |
| 壓差電壓 (VOUT1) |
350mV 典型值 @ 750mA |
| 壓差電壓 (VOUT2) |
250mV 典型值 @ 350mA |
| 輸入電壓範圍 |
2.7V 至 10V |
| 線性調整率 |
0.03%/V 典型值 |
| 負載調整率 |
0.5% 典型值 |
| 靜態電流 |
340µA 典型值 (雙輸出使能) |
| 電源抑制比 |
60dB @ 1kHz |
| 工作溫度 |
-40°C 至 +125°C |
| 封裝 |
28-HTSSOP (PowerPAD) |
核心特性
- 雙路輸出 LDO,獨立使能控制
- 固定 3.3V 和 1.8V 輸出
- 高輸出電流:750mA 和 350mA
- 低壓差:350mV 和 250mV
- 低靜態電流:典型值 340µA
- 優異的線性和負載調整率
- 內置 UVLO、過流和熱保護
- PowerPAD 封裝增強散熱
- 可與陶瓷輸出電容穩定工作
典型應用場景
- 5G 基站:為 FPGA 內核和 I/O 供電
- 汽車儀表盤:為 MCU 提供 3.3V,為顯示驅動提供 1.8V
- 工業控制系統:PLC 模塊的雙電壓軌
- 網絡設備:為 SoC 和內存供電
- 醫療設備:為模擬和數字部分提供低噪聲電源
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