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線性與低壓差 (LDO) 穩壓器

TPS7B4253-Q1

現行

車用 300mA、無電池 (40V)、可調整電壓追蹤低壓差電壓穩壓器

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TPS7B4260-Q1 現行 具有回饋功能和 6mV 追蹤公差的車用 300mA 40V 電壓追蹤低壓差穩壓器 Improved line/load transient, Lower quiescent current and faster response time.

TPS7B4253-Q1

現行
產品規格表 立即訂購

產品詳細資料

Rating Automotive Vin (max) (V) 40 Vin (min) (V) 4 Iout (max) (A) 0.3 Output options Tracking Output Vout (max) (V) 40 Vout (min) (V) 1.5 PSRR at 100 KHz (dB) 60 Iq (typ) (mA) 0.06 Features Enable, Reverse Current Protection, Reverse voltage protection, Short-to-battery protection Thermal resistance θJA (°C/W) 45 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Dropout voltage (Vdo) (typ) (mV) 350 Operating temperature range (°C) -40 to 125
Rating Automotive Vin (max) (V) 40 Vin (min) (V) 4 Iout (max) (A) 0.3 Output options Tracking Output Vout (max) (V) 40 Vout (min) (V) 1.5 PSRR at 100 KHz (dB) 60 Iq (typ) (mA) 0.06 Features Enable, Reverse Current Protection, Reverse voltage protection, Short-to-battery protection Thermal resistance θJA (°C/W) 45 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Dropout voltage (Vdo) (typ) (mV) 350 Operating temperature range (°C) -40 to 125
HTSSOP (PWP) 20 41.6 mm² (6.5 mm × 6.4 mm) HSOIC (DDA) 8 29.4 mm² (4.9 mm × 6 mm)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • Device HBM ESD classification level 3A
    • Device CDM ESD classification level C6
  • Wide input-voltage range: –40V to 45V (maximum)
  • Output voltage adjusts down to:
    • 1.5V to 40V (HTSSOP)
    • 2V to 40V (HSOIC PowerPAD™)
  • Output Current Capability: 300mA
  • Very-low output tracking tolerance, ±4mV
  • Low-dropout voltage: 320mV for IOUT = 200mA
  • Separate pins for enable and tracking inputs (HTSSOP only)
  • Low quiescent current (IQ):
    • < 4µA when EN = low
    • 60µA (typical) at light loads
  • Extremely wide ESR range:
    • Stable With 10µF to 500µF ceramic output capacitor, ESR 1mΩ to 20Ω
  • Reverse polarity protection
  • Current-limit and thermal-shutdown protection
  • Output short-circuit proof to ground and supply
  • Inductive clamp at OUT pin
  • Available in the following packages:
    • 8-pin HSOIC PowerPAD
    • 20-pin HTSSOP
  • For a newer drop-in alternative in the HSOIC package, see the TPS7B4260-Q1 device.
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • Device HBM ESD classification level 3A
    • Device CDM ESD classification level C6
  • Wide input-voltage range: –40V to 45V (maximum)
  • Output voltage adjusts down to:
    • 1.5V to 40V (HTSSOP)
    • 2V to 40V (HSOIC PowerPAD™)
  • Output Current Capability: 300mA
  • Very-low output tracking tolerance, ±4mV
  • Low-dropout voltage: 320mV for IOUT = 200mA
  • Separate pins for enable and tracking inputs (HTSSOP only)
  • Low quiescent current (IQ):
    • < 4µA when EN = low
    • 60µA (typical) at light loads
  • Extremely wide ESR range:
    • Stable With 10µF to 500µF ceramic output capacitor, ESR 1mΩ to 20Ω
  • Reverse polarity protection
  • Current-limit and thermal-shutdown protection
  • Output short-circuit proof to ground and supply
  • Inductive clamp at OUT pin
  • Available in the following packages:
    • 8-pin HSOIC PowerPAD
    • 20-pin HTSSOP
  • For a newer drop-in alternative in the HSOIC package, see the TPS7B4260-Q1 device.

For automotive off-board sensors and low-current off-board modules, the power supply is through a long cable from the main board. In such cases, protection is required in the power devices for the off-board loads to prevent the onboard components from damage during a short to GND or short to battery caused by a broken cable. Off-board sensors require a power supply as consistent as that for onboard components to secure high accuracy of data acquisition.

The TPS7B4253-Q1 is designed for automotive applications with a 45V load dump. The device can be used either as a tracking low-dropout (LDO) regulator or as a voltage tracker to build a closed power loop for off-board sensors with an onboard main supply. The output of the device is accurately regulated by a reference voltage at the ADJ pin.

To provide an accurate power supply to off-board modules, the device offers a 4mV ultra-low tracking tolerance between the ADJ and FB pins across temperature. The back-to-back PMOS topology eliminates the need for an external diode in a reverse-polarity condition. The TPS7B4253-Q1 also includes thermal shutdown, inductive clamp, overload, and short-to-battery protection to prevent damage to onboard components during extreme conditions.

For automotive off-board sensors and low-current off-board modules, the power supply is through a long cable from the main board. In such cases, protection is required in the power devices for the off-board loads to prevent the onboard components from damage during a short to GND or short to battery caused by a broken cable. Off-board sensors require a power supply as consistent as that for onboard components to secure high accuracy of data acquisition.

The TPS7B4253-Q1 is designed for automotive applications with a 45V load dump. The device can be used either as a tracking low-dropout (LDO) regulator or as a voltage tracker to build a closed power loop for off-board sensors with an onboard main supply. The output of the device is accurately regulated by a reference voltage at the ADJ pin.

To provide an accurate power supply to off-board modules, the device offers a 4mV ultra-low tracking tolerance between the ADJ and FB pins across temperature. The back-to-back PMOS topology eliminates the need for an external diode in a reverse-polarity condition. The TPS7B4253-Q1 also includes thermal shutdown, inductive clamp, overload, and short-to-battery protection to prevent damage to onboard components during extreme conditions.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 TPS7B4253-Q1 Automotive, 300mA, 40V, Voltage-Tracking LDO With 4mV Tracking Tolerance datasheet (Rev. D) PDF | HTML 2025/11/4
Product overview Robust Tracking LDOs for Powering Off Board Sensors PDF | HTML 2025/10/1
功能安全資訊 TPS7B4253-Q1 Functional safety FIT rate, FMD and Pin-FMEA (Rev. A) PDF | HTML 2025/4/14
Application brief Automotive Off-Board Sensor Power Considerations 2018/9/20
更多文件說明 Fundamentals of designing with LDOs in auto battery direct connect applications 2017/2/27
應用說明 Using Tracking LDOs as High-Side Switch (for Low-Current Applications) PDF | HTML 2016/10/28
應用說明 Various Applications for Voltage-Tracking LDO 2016/8/3
使用指南 TPS7B4253-Q1 Evaluation Module 2014/12/11

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LDO-PARAL-DESG-EVM — 採用 TPS7B4253-Q1 的 LDO 並聯解決方案評估板

此 LDO 並聯解決方案評估模組 (EVM) 可協助設計人員評估 TPS7B4253-Q1 和 TPS7B6750-Q1 並聯應用的操作與性能。此 EVM 使用極低容差，電壓追蹤 LDO TPS7B4253-Q1 來展示
實作 LDO 並聯解決方案，以滿足高輸出電流和低靜態電流 (IQ) 需求。在此設計中，TPS7B6750-Q1 可調節 5V 輸出電壓，而兩部 TPS7B4253-Q1 裝置則可擴充輸出電流，並實現各通道的電流分載。
使用指南: PDF
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開發板

TPS7B4253EVM — TPS7B4253-Q1 追蹤 LDO 穩壓器評估模組

 

TPS7B4253 評估模組 (EVM) 可協助設計師評估 TPS7B4253QPWPRQ1 追蹤 LDO 的運作和性能。TPS7B4253 是在 HSOIC-DDA 封裝中單體整合式低壓差電壓追蹤器。設計旨在為汽車環境中的板外感測器供電。IC 具備整合式防護過載、過熱，極性反接以及輸出對電池或接地短路。
高達 VIN = 45V 的供應電壓，可根據在調整輸入針腳 ADJ 上以高準確度，以及高達 300mA 負載的參考電壓進行調節。

TPS7B4253EVM 評估模組 (EVM) 可協助評估 TPS7B4253QPWPRQ1 追蹤 LDO 穩壓器的運作和性能。TPS7B4253-Q1 裝置是在 (...)

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模擬型號

TPS7B4253 PSpice Transient Model (Rev. C)

SLVMB36C.ZIP (89 KB) - PSpice 模型
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模擬型號

TPS7B4253 TINA-TI Reference Design

SLVMC49.TSC (163 KB) - TINA-TI 參考設計
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模擬型號

TPS7B4253 TINA-TI Transient Spice Model

SLVMC48.ZIP (20 KB) - TINA-TI Spice 模型
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模擬型號

TPS7B4253 Unencrypted PSpice Transient Model

SLVMC85.ZIP (3 KB) - PSpice 模型
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計算工具

PARALLEL-LDO-CALC — Parallel low-dropout (LDO) calculator

並聯低壓差 (LDO) 計算器是以 Microsoft® Excel® 為基礎的工具，可為使用鎮流器電阻器的並聯 LDO 穩壓器提供最壞情況分析。此工具可幫助使用者判斷所需的並聯 LDO 穩壓器最小數量，以及適合系統要求集的最佳鎮流器電阻。

在並聯應用中使用的常用 LDO 穩壓器的產品規格書資訊會預先填入計算機中。使用者可根據自己的系統需求，評估最符合其系統需求的 LDO 穩壓器裝置。

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參考設計

TIDA-00745 — 適用於車用車身控制模組的 15W 系統級電源參考設計

TIDA-00745 是針對 14W 系統進行最佳化的（CISPR 25 4 類）SMPS 設計，適合汽車車身控制模組。此設計中使用的所有降壓轉換器均以 2.1MHz 的頻率進行切換。

本設計分為四大區塊：

  1. EMI 濾波器：適用於傳導式 EMI 抑制的共模和差動濾波器
  2. 預升壓 (TPS40210-Q1)：高效率、低成本的非同步預升壓設計，適合 15W 應用。輸出維持在 7.5V，當 Vin > Vout（程式化升壓輸出）時，輸出會遵循輸入並實現旁路運作（在 Vin > 編程 7.5V 升壓輸出時透過導電 PFET）。
  3. 降壓轉換器（LM53603-Q1、LM53601-Q1 和 (...)
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參考設計

TIDA-00863 — 採用 TPS7B4253-Q1 的 LDO 並聯解決方案參考設計

此參考設計使用超低容限電壓追蹤 LDO TPS7B4253-Q1，展示 LDO 並聯在高輸出電流與低 IQ 需求下的實作。

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封裝 針腳 CAD 符號、佔位空間與 3D 模型
HTSSOP (PWP) 20 Ultra Librarian
HSOIC (DDA) 8 Ultra Librarian
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