SNVS256D Novmeber   2003  – November 2016 LP3943

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and 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 I2C Interface (SCL and SDA Pins) Timing Requirements
    7. 6.7 Typical Characteristic
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
    5. 7.5 Programming
      1. 7.5.1 I2C Data Validity
      2. 7.5.2 I2C START and STOP Conditions
      3. 7.5.3 Transferring Data
      4. 7.5.4 Auto Increment
    6. 7.6 Register Maps
      1. 7.6.1 Binary Format for Input Registers (Read-only)—Address 0x00 and 0x01
      2. 7.6.2 Binary Format for Frequency Prescaler and PWM Registers — Address 0x02 to 0x05
      3. 7.6.3 Binary Format for Selector Registers — Address 0x06 to 0x09
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Reducing IQ When LEDs are OFF
      3. 8.2.3 Application Curve
    3. 8.3 System Examples
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

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机械数据 (封装 | 引脚)
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订购信息

5 Pin Configuration and Functions

RTW Package
24-Pin WQFN With Exposed Pad
Top View
LP3943 20079602.gif

Pin Functions

PIN I/O DESCRIPTION
NUMBER NAME
1 LED0 Output Output of LED0 Driver
2 LED1 Output Output of LED1 Driver
3 LED2 Output Output of LED2 Driver
4 LED3 Output Output of LED3 Driver
5 LED4 Output Output of LED4 Driver
6 LED5 Output Output of LED5 Driver
7 LED6 Output Output of LED6 Driver
8 LED7 Output Output of LED7 Driver
9 GND Ground Ground
10 LED8 Output Output of LED8 Driver
11 LED9 Output Output of LED9 Driver
12 LED10 Output Output of LED10 Driver
13 LED11 Output Output of LED11 Driver
14 LED12 Output Output of LED12 Driver
15 LED13 Output Output of LED13 Driver
16 LED14 Output Output of LED14 Driver
17 LED15 Output Output of LED15 Driver
18 RST Input Active Low Reset Input
19 SCL Input Clock Line for I2C Interface
20 SDA Input/Output Serial Data Line for I2C Interface
21 VDD Power Power Supply
22 A0 Input Address Input 0
23 A1 Input Address Input 1
24 A2 Input Address Input 2
— Exposed Pad — Tie internally to GND pin.