ZHCSL07C September   2019  – August 2021 TPS8802

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 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 Typical Characteristics
  7. 7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  System Power-up
      2. 8.3.2  LDO Regulators
        1. 8.3.2.1 Power LDO Regulator
        2. 8.3.2.2 Internal LDO Regulator
        3. 8.3.2.3 Microcontroller LDO Regulator
      3. 8.3.3  Photo Chamber AFE
        1. 8.3.3.1 Photo Input Amplifier
        2. 8.3.3.2 Photo Gain Amplifier
      4. 8.3.4  LED Driver
        1. 8.3.4.1 LED Current Sink
        2. 8.3.4.2 LED Voltage Supply
      5. 8.3.5  Carbon Monoxide Sensor AFE
        1. 8.3.5.1 CO Transimpedance Amplifier
        2. 8.3.5.2 CO Connectivity Test
      6. 8.3.6  Boost Converter
        1. 8.3.6.1 Boost Hysteretic Control
        2. 8.3.6.2 Boost Soft Start
      7. 8.3.7  Interconnect Driver
      8. 8.3.8  Piezoelectric Horn Driver
        1. 8.3.8.1 Three-Terminal Piezo
        2. 8.3.8.2 Two-Terminal Piezo
      9. 8.3.9  Battery Test
      10. 8.3.10 AMUX
      11. 8.3.11 Analog Bias Block and 8 MHz Oscillator
      12. 8.3.12 Interrupt Signal Alerts
    4. 8.4 Device Functional Modes
      1. 8.4.1 Sleep Mode
      2. 8.4.2 Fault States
        1. 8.4.2.1 MCU LDO Fault
        2. 8.4.2.2 Over-Temperature Fault
    5. 8.5 Programming
    6. 8.6 Register Maps
      1. 8.6.1  REVID Register (Offset = 0h) [reset = 0h]
      2. 8.6.2  STATUS1 Register (Offset = 1h) [reset = 0h]
      3. 8.6.3  STATUS2 Register (Offset = 2h) [reset = 0h]
      4. 8.6.4  MASK Register (Offset = 3h) [reset = 0h]
      5. 8.6.5  CONFIG1 Register (Offset = 4h) [reset = 20h]
      6. 8.6.6  CONFIG2 Register (Offset = 5h) [reset = 2h]
      7. 8.6.7  ENABLE1 Register (Offset = 6h) [reset = 10h]
      8. 8.6.8  ENABLE2 Register (Offset = 7h) [reset = 0h]
      9. 8.6.9  CONTROL Register (Offset = 8h) [reset = 0h]
      10. 8.6.10 SLPTMR1 Register (Offset = 9h) [reset = 0h]
      11. 8.6.11 SLPTMR2 Register (Offset = Ah) [reset = 0h]
      12. 8.6.12 GPIO_AMUX Register (Offset = Bh) [reset = 0h]
      13. 8.6.13 CO_BATTEST Register (Offset = Ch) [reset = 0h]
      14. 8.6.14 CO Register (Offset = Dh) [reset = 0h]
      15. 8.6.15 VBOOST Register (Offset = Eh) [reset = F2h]
      16. 8.6.16 LEDLDO Register (Offset = Fh) [reset = 0h]
      17. 8.6.17 PH_CTRL Register (Offset = 10h) [reset = 0h]
      18. 8.6.18 LED_DAC_A Register (Offset = 11h) [reset = 0h]
      19. 8.6.19 LED_DAC_B Register (Offset = 12h) [reset = 0h]
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Photo Amplifier Component Selection
        2. 9.2.2.2 LED Driver Component Selection
        3. 9.2.2.3 LED Voltage Supply Selection
        4. 9.2.2.4 Boost Converter Component Selection
        5. 9.2.2.5 Regulator Component Selection
      3. 9.2.3 Application Curves
      4. 9.2.4 3V Battery Smoke and CO Alarm
        1. 9.2.4.1 Design Requirements
        2. 9.2.4.2 Detailed Design Procedure
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Photo Amplifier Layout
      2. 11.1.2 CO Amplifier Layout
      3. 11.1.3 Boost Converter Layout
      4. 11.1.4 Ground Plane Layout
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 接收文档更新通知
    2. 12.2 支持资源
    3. 12.3 Trademarks
    4. 12.4 静电放电警告
    5. 12.5 术语表
  13. 13Mechanical, Packaging, and Orderable Information

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

Pin Functions

PINI/ODESCRIPTION
NAMENO.
AGND5IAnalog ground. Connect to ground plane.
AMUX33OAnalog multiplexer output.
CON35INegative terminal of CO operational amplifier. Connect to GND if unused.
COO34OOutput of CO operational amplifier. Connect to GND if unused.
COP36IPositive terminal of CO operational amplifier. Connect to GND if unused.
CSA9ILED driver A current sense.
CSB11ILED driver B current sense. Connect to GND if unused.
CSEL29IDevice address select pin for I2C serial interface. Pull to GND for I2C address 0x3F. Pull to VMCU for I2C address 0x2A. Do not leave floating.
DGND32IDigital ground. Connect to AGND.
DINA10ILED driver A current sink. Connect to cathode of LED.
DINB12ILED driver B current sink. Connect to cathode of LED. Connect to GND if unused.
GPIO26I/OMulti-purpose digital input and output.
HBEN30IHorn block enable. Do not leave floating while device is powered.
HORNBR14OBrass terminal of piezo horn.
HORNFB16IFeedback terminal of a three-terminal piezo horn. Do not leave floating while device is powered.
HORNSL15OSilver terminal of piezo horn.
INT_MCU25I/OInterconnect and interrupt signal to microcontroller.
INT_UNIT24I/OInterconnect bus to connect other smoke alarms.
LEDEN31ILED driver enable. Do not leave floating while device is powered.
LEDLDO4OLDO output for charging LED supply capacitor. Connect to GND if unused.
MCUSEL13IDefault MCULDO and VBST voltage selection input. Leave floating for VMCU = 3.3 V, VBST = 4.7 V. Tie to VINT for VMCU = 2.5 V, VBST = 3.8 V. Tie to GND for VMCU = 1.8 V, VBST = 2.7 V. Connect to GND with a 620-Ω resistor for VMCU = 1.5 V, VBST = 2.7 V.
PDN7IPhoto input amplifier negative input. Connect to cathode of photodiode.
PDO8OPhoto input amplifier output pin.
PDP6IPhoto input amplifier positive Input. Connect to anode of photodiode.
PGND17IPower ground connection to boost converter and horn driver. Connect to AGND.
PLDO21OCapacitor connection to PLDO regulator.
PREF37OPhoto reference voltage and output for testing CO sensor connectivity.
REF0P338O300mV reference. Connect to GND if unused.
RESERVED1, 2, 3N/AConnect to GND.
SCL27IClock input for I2C serial interface.
SDA28I/OData line for I2C serial interface.
VBST19IBoost converter feedback and power input.
VCC20IInput supply pin.
VINT22OCapacitor connection to internal supply LDO.
VLX18IBoost converter switch node.
VMCU23I/OLDO supply for external microcontroller and internal IO buffers.
Thermal Pad39N/AMetal connection for thermal dissipation. Connect to ground plane.