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線性與低壓差 (LDO) 穩壓器

TPS7B4253-Q1

現行

汽車 300-mA、無電池 (40-V)、可調整電壓追蹤低壓差電壓穩壓器

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產品規格表

TPS7B4253-Q1

現行
產品規格表 立即訂購

產品詳細資料

Output options Tracking Output Iout (max) (A) 0.3 Vin (max) (V) 40 Vin (min) (V) 4 Vout (max) (V) 40 Vout (min) (V) 1.5 Rating Automotive PSRR at 100 KHz (dB) 60 Iq (typ) (mA) 0.04 Thermal resistance θJA (°C/W) 45 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Reverse Current Protection, Reverse voltage protection, Short-to-battery protection Dropout voltage (Vdo) (typ) (mV) 350 Operating temperature range (°C) -40 to 125
Output options Tracking Output Iout (max) (A) 0.3 Vin (max) (V) 40 Vin (min) (V) 4 Vout (max) (V) 40 Vout (min) (V) 1.5 Rating Automotive PSRR at 100 KHz (dB) 60 Iq (typ) (mA) 0.04 Thermal resistance θJA (°C/W) 45 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Reverse Current Protection, Reverse voltage protection, Short-to-battery protection Dropout voltage (Vdo) (typ) (mV) 350 Operating temperature range (°C) -40 to 125
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 3A
    • Device CDM ESD Classification Level C6
  • –40 to 45-V Wide Input-Voltage Range (Maximum)
  • Output Voltage Adjusts Down to:
    • 1.5 to 40 V (HTSSOP)
    • 2 to 40 V (SO PowerPAD™)
  • 300-mA Output Current Capability
  • Very-Low Output Tracking Tolerance, ±4 mV
  • 320-mV Low Dropout Voltage when IOUT = 200 mA
  • Separate Pins for Enable and Tracking Inputs (HTSSOP only)
  • Low Quiescent Current (IQ):
    • < 4 µA when EN = LOW
    • 60 µA (Typical) at Light Loads
  • Extremely Wide ESR Range.
    • Stable With 10- to 500-µF Ceramic Output Capacitor, ESR 1 mΩ to 20 Ω
  • 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 SO PowerPAD Package
    • 20-Pin HTSSOP Package
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 3A
    • Device CDM ESD Classification Level C6
  • –40 to 45-V Wide Input-Voltage Range (Maximum)
  • Output Voltage Adjusts Down to:
    • 1.5 to 40 V (HTSSOP)
    • 2 to 40 V (SO PowerPAD™)
  • 300-mA Output Current Capability
  • Very-Low Output Tracking Tolerance, ±4 mV
  • 320-mV Low Dropout Voltage when IOUT = 200 mA
  • Separate Pins for Enable and Tracking Inputs (HTSSOP only)
  • Low Quiescent Current (IQ):
    • < 4 µA when EN = LOW
    • 60 µA (Typical) at Light Loads
  • Extremely Wide ESR Range.
    • Stable With 10- to 500-µF Ceramic Output Capacitor, ESR 1 mΩ to 20 Ω
  • 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 SO PowerPAD Package
    • 20-Pin HTSSOP Package

For automotive off-board sensors and small 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 consistent power supply as onboard components to secure high accuracy of data acquisition.

The TPS7B4253-Q1 device is designed for automotive applications with a 45-V load dump. The device can either be used as one tracking low-dropout (LDO) regulator or voltage tracker to build one 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 the off-board modules, the device offers a 4-mV ultralow tracking tolerance between the ADJ and FB pins across temperature. The back-to-back PMOS topology eliminates the need for an external diode under reverse polarity condition. The TPS7B4253-Q1 device 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 small 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 consistent power supply as onboard components to secure high accuracy of data acquisition.

The TPS7B4253-Q1 device is designed for automotive applications with a 45-V load dump. The device can either be used as one tracking low-dropout (LDO) regulator or voltage tracker to build one 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 the off-board modules, the device offers a 4-mV ultralow tracking tolerance between the ADJ and FB pins across temperature. The back-to-back PMOS topology eliminates the need for an external diode under reverse polarity condition. The TPS7B4253-Q1 device 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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類型 標題 日期
* Data sheet TPS7B4253-Q1 300-mA 40-V Low-Dropout Voltage-Tracking LDO With 4-mV Tracking Tolerance datasheet (Rev. C) PDF | HTML 2016年 7月 22日
Functional safety information TPS7B4253-Q1 Functional Safety FIT Rate and Failure Mode Distribution 2019年 12月 17日
Application brief Automotive Off-Board Sensor Power Considerations 2018年 9月 20日
More literature Fundamentals of designing with LDOs in auto battery direct connect applications 2017年 2月 27日
Application note Using Tracking LDOs as High-Side Switch (for Low-Current Applications) 2016年 10月 28日
EVM User's guide LDO Parallel Design Evaluation Module User's Guide 2016年 9月 14日
Application note Various Applications for Voltage-Tracking LDO 2016年 8月 3日
Application note TPS7B4253-Q1 Pin FMEA 2015年 12月 21日
User guide TPS7B4253-Q1 Evaluation Module 2014年 12月 11日

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

This LDO Parallel Solution evaluation modules (EVM) help designers evaluate the operation and performance of TPS7B4253-Q1 and TPS7B6750-Q1 parallel application. This EVM uses a very low-tolerance, voltagetracking LDO TPS7B4253-Q1 to demonstrate the
implementation of LDO parallel solution for high (...)
使用指南: PDF
TI.com 無法提供
開發板

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

 

TPS7B4253 evaluation modules (EVM) help designers evaluate the operation and performance of TPS7B4253QPWPRQ1 tracking LDO. The TPS7B4253 is a monolithic integrated low dropout voltage tracker in HSOIC-DDA package. It is designed to supply off-board sensors in automotive environment. The IC has (...)
使用指南: PDF
TI.com 無法提供
模擬型號

TPS7B4253 PSpice Transient Model (Rev. C)

SLVMB36C.ZIP (89 KB) - PSpice Model
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模擬型號

TPS7B4253 TINA-TI Reference Design

SLVMC49.TSC (163 KB) - TINA-TI Reference Design
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模擬型號

TPS7B4253 TINA-TI Transient Spice Model

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

TPS7B4253 Unencrypted PSpice Transient Model

SLVMC85.ZIP (3 KB) - PSpice Model
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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 is a 14-W system-optimized (CISPR25 Class 4) SMPS design for an automotive body control module. All buck converters used in this design are switching at 2.1 MHz. 

The design is divided into four major blocks:

  1. EMI filter: Common mode and a differential filter for conducted EMI suppression
  2. (...)
Design guide: PDF
電路圖: PDF
參考設計

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

This reference design uses a very-low tolerant, voltage-tracking LDO TPS7B4253-Q1 to demonstrate the implementation of LDO parallel for high-output current and low-IQ requirements.
Design guide: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
HSOIC (DDA) 8 Ultra Librarian
HTSSOP (PWP) 20 Ultra Librarian
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