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  • LSF0102-Q1 汽车类 2 通道自动双向多电压电平转换器

    • ZHCSI50B may   2018  – may 2023 LSF0102-Q1

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  • LSF0102-Q1 汽车类 2 通道自动双向多电压电平转换器
  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics
    6. 6.6  Switching Characteristics (Translating Down): VCCB = 3.3 V
    7. 6.7  Switching Characteristics (Translating Down): VCCB = 2.5 V
    8. 6.8  Switching Characteristics Translating Up): VCCB = 3.3 V
    9. 6.9  Switching Characteristics (Translating Up): VCCB = 2.5 V
    10. 6.10 Typical Characteristics
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Auto Bidirectional Voltage Translation
      2. 8.3.2 Output Enable
      3. 8.3.3 Device Functional Modes
        1. 8.3.3.1 Up and Down Translation
          1. 8.3.3.1.1 Up Translation
          2. 8.3.3.1.2 Down Translation
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Bidirectional Translation
        1. 9.2.1.1 Design Requirements
          1. 9.2.1.1.1 Enable, Disable, and Reference Voltage Guidelines
          2. 9.2.1.1.2 Bias Circuitry
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Bidirectional Translation
          2. 9.2.1.2.2 Pull-Up Resistor Sizing
          3. 9.2.1.2.3 Application Curve
          4. 9.2.1.2.4 Mixed-Mode Voltage Translation
          5. 9.2.1.2.5 Single Supply Translation
          6. 9.2.1.2.6 Voltage Translation for Vref_B < Vref_A + 0.8 V
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 接收文档更新通知
    3. 10.3 支持资源
    4. 10.4 Trademarks
    5. 10.5 静电放电警告
    6. 10.6 术语表
  12. 11Mechanical, Packaging, and Orderable Information
  13. 重要声明

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  • DCU|8
    • MPDS050E
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Data Sheet

LSF0102-Q1 汽车类 2 通道自动双向多电压电平转换器

本资源的原文使用英文撰写。 为方便起见，TI 提供了译文；由于翻译过程中可能使用了自动化工具，TI 不保证译文的准确性。 为确认准确性，请务必访问 ti.com 参考最新的英文版本（控制文档）。

1 特性

  • 符合面向汽车应用的 AEC-Q100 标准
    • 温度等级 1：–40°C ≤ TA ≤ 125°C
    • 器件 HBM ESD 分类等级 2
    • CDM ESD 分类等级 C6
  • 在无方向引脚的情况下提供双向电压转换
  • 支持开漏和推挽应用，如 I2C、SPI、UART、MDIO、SDIO 和 GPIO
  • 在不超过 30pF 的容性负载条件下支持最高达 100MHz 的上行转换和超过 100MHz 的下行转换，
    在 50pF 的容性负载条件下支持高达 40MHz 的上行/下行转换
  • 可实现以下电压之间的双向电压电平转换
    • 0.95V ↔ 1.8/2.5/3.3/5 V
    • 1.2V ↔ 1.8/2.5/3.3/5V
    • 1.8V ↔ 2.5/3.3/5V
    • 2.5V ↔ 3.3/5V
    • 3.3V ↔ 5V
  • 低待机电流
  • 5V 耐受 I/O 端口，可支持 TTL
    电压电平
  • 低导通电阻，可减少信号失真
  • EN = 低电平时为高阻抗 I/O 引脚
  • 采用直通引脚排列以简化 PCB 布线
  • 闩锁性能超过 100mA，符合 JESD 78 II 类规范

2 应用

  • 信息娱乐系统音响主机
  • 图形群集
  • ADAS 融合
  • ADAS 前置摄像头
  • HEV 电池管理系统

3 说明

LSF0102-Q1 器件是一款自动双向电压转换器，无需方向引脚即可在广泛的电源范围内进行转换。当容性负载 ≤ 30pF 时，LSF0102-Q1 支持最高 100MHz 的升压转换和高于 100MHz 的降压转换。此外，当容性负载为 50pF 时，LSF0102-Q1 支持最高 40MHz 的上行和下行转换，因此，LSF0102-Q1 器件可支持汽车中各种常见的标准接口，如 I2C、SPI、GPIO、SDIO、UART 和 MDIO。

LSF0102-Q1 器件具有 5V 耐受数据输入。因此该器件可兼容 TTL 电压电平。此外，LSF0102-Q1 还支持混合模式电压转换，可在各个通道上升压和降压转换至不同的电源电平。

封装信息(1)
器件型号 封装 封装尺寸（标称值）
LSF0102-Q1 DCU（VSSOP，8） 2.30mm × 2.00mm
(1) 如需了解所有可用封装，请参阅数据表末尾的可订购产品附录。
GUID-B9214607-B230-4323-8D66-C21C9561560D-low.gif功能方框图

4 Revision History

Changes from Revision A (April 2021) to Revision B (May 2023)

  • Updated the Recommended Operating Conditions table to reflect maximum of 5.5 VGo
  • Updated the Thermal Information tableGo
  • Changed all Switching Characteristic Test ConditionsGo
  • Added the Output Enable sectionGo
  • Added the Up and Down Translation sectionsGo
  • Changed pull up resistor to bias resistor in Enable, Disable, and Reference Voltage Guidelines sectionGo
  • Added the Bias Circuitry sectionGo
  • Updated the current values in the table titled Pull-up Resistor Values Go
  • Added image to the Mixed-Mode Voltage Translation sectionGo
  • Added the Single Supply Translation sectionGo
  • Added section Voltage Translation for Vref_B < Vref_A + 0.8 V Go

Changes from Revision * (May 2018) to Revision A (April 2021)

  • 更新了整个文档中的表格、图和交叉参考的编号格式Go
  • Updated the Bidirectional Translation section to include inclusive terminologyGo

5 Pin Configuration and Functions

GUID-91ABD652-5FA9-45A0-8385-3A0B3EF8CF27-low.gifFigure 5-1 LSF0102-Q1 DCU Package,8-Pin VSSOP(Top View)
Table 5-1 Pin Functions
PINTYPE(1)DESCRIPTION
NAMENO.
A13I/OInput/Output A port for Channel 1
A24I/OInput/Output A port for Channel 2
B16I/OInput/Output B port for Channel 1
B25I/OInput/Output B port for Channel 2
EN8II/O enable input; see Figure 9-1 for typical setup. Should be tied directly to Vref_B to be enabled or pulled LOW to disable all I/O pins.
GND1—Ground
Vref_A2—A side reference supply voltage; see Section 9 for setup and supply voltage range.
Vref_B7—B side reference supply voltage. Must be connected to supply through 200 kΩ; see Section 9 for setup and supply voltage range.
(1) I = input, O = output

6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature (unless otherwise noted)(1)
MINMAXUNIT
Input voltage(2), VI–0.57V
Input/output voltage(2), VI/O–0.57V
Continuous channel current128mA
Input clamp current, IIKVI < 0–50mA
Storage temperature range, Tstg–65150°C
Operating junction temperature, TJ150°C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) The input and input/output negative-voltage ratings may be exceeded if the input and input/output clamp-current ratings are observed.

6.2 ESD Ratings

VALUEUNIT
V(ESD)Electrostatic dischargeHuman-body model (HBM), per AEC Q100-002(1)±2000V
Charged-device model (CDM), per AEC Q100-011±1000
(1) AEC Q100-002 indicates that HBM stressing shall be in accordance with the ANSI/ESDA/JEDEC JS-001 specification.

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)
MINMAXUNIT
VI/OInput/output voltage5.5V
Vref_A/B/ENReference voltage5.5V
IPASSPass transistor current64mA
TAOperating free-air temperature–40125°C

6.4 Thermal Information

THERMAL METRIC(1)LSF0102-Q1UNIT
DCU (US8)
8 PINS
RθJAJunction-to-ambient thermal resistance279.7°C/W
RθJC(top)Junction-to-case (top) thermal resistance129.9°C/W
RθJBJunction-to-board thermal resistance191.3°C/W
ψJTJunction-to-top characterization parameter66.3°C/W
ψJBJunction-to-board characterization parameter190.1°C/W
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report.

6.5 Electrical Characteristics

over recommended operating free-air temperature range (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYP(1)MAXUNIT
VIKInput clamp voltageII = –18 mA, VEN = 0–1.2V
IIHI/O input high leakageVI = 5 V, VEN = 05.0µA
ICCBAVref_B to Vref_A leakageVref_B = VEN = 5.5 V, Vref_A = 4.5 V, IO = 0, VI = VCC or GND1µA
CI(ref_A/B/EN)Input capacitanceVI = 3 V or 011pF
Cio(off)I/O pin off-state capacitanceVO = 3 V or 0, VEN = 04.06.0pF
Cio(on)I/O Pin on-state capacitanceVO = 3 V or 0, VEN = 3 V10.512.5pF
ron(2)On-state resistanceVI = 0, IO = 64 mAVref_A = 3.3 V; Vref_B = VEN = 5 V8.0Ω
Vref_A = 1.8 V; Vref_B = VEN = 5 V9.0
Vref_A = 1.0 V; Vref_B = VEN = 5 V10
VI = 0, IO = 32 mAVref_A = 1.8 V; Vref_B = VEN = 5 V10Ω
Vref_A = 2.5 V; Vref_B = VEN = 5 V15
VI = 1.8 V, IO = 15 mAVref_A = 3.3 V; Vref_B = VEN = 5 V9.0Ω
VI = 1.0 V, IO = 10 mAVref_A = 1.8 V; Vref_B = VEN = 3.3 V18Ω
VI = 0 V, IO = 10 mAVref_A = 1.0 V; Vref_B = VEN = 3.3 V20Ω
VI = 0 V, IO = 10 mAVref_A = 1.0 V; Vref_B = VEN = 1.8 V30Ω
(1) All typical values are at TA = 25°C.
(2) Measured by the voltage drop between the A and B pins at the indicated current through the switch. On-state resistance is determined by the lowest voltage of the two (A or B) pins.

6.6 Switching Characteristics (Translating Down): VCCB = 3.3 V

over recommended operating free-air temperature range, VCCB = 3.3 V, VCCB = VIH = Vref_A + 1, VIL = 0, and VM = 0.5Vref_A (unless otherwise noted) (see Parameter Measurement Information)
PARAMETERTEST CONDITIONSCL = 50 pFCL = 30 pFCL = 15 pFUNIT
MINTYPMAXMINTYPMAXMINTYPMAX
tPLHPropagation delay time, low-to-high outputFrom (input) A or B
to (output) B or A		1.10.70.3ns
tPHLPropagation delay time, high-to-low outputFrom (input) A or B
to (output) B or A		1.20.80.4

6.7 Switching Characteristics (Translating Down): VCCB = 2.5 V

over recommended operating free-air temperature range, VCCB = 2.5 V, VCCB = VIH = Vref_A + 1, VIL = 0, and VM = 0.5Vref_A (unless otherwise noted) (see Parameter Measurement Information)
PARAMETERTEST CONDITIONSCL = 50 pFCL = 30 pFCL = 15 pFUNIT
MINTYPMAXMINTYPMAXMINTYPMAX
tPLHPropagation delay time, low-to-high outputFrom (input) A or B
to (output) B or A		1.20.80.35ns
tPHLPropagation delay time, high-to-low outputFrom (input) A or B to (output) B or A1.310.5

 
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