SNVS441I January   2007  – November 2016 LP5521

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  Charge Pump Electrical Characteristics
    7. 6.7  LED Driver Electrical Characteristics (R, G, B Outputs)
    8. 6.8  Logic Interface Characteristics
    9. 6.9  I2C Timing Requirements (SDA, SCL)
    10. 6.10 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Charge Pump Operational Description
        1. 7.3.1.1 Output Resistance
        2. 7.3.1.2 Controlling Charge Pump
        3. 7.3.1.3 LED Forward Voltage Monitoring
      2. 7.3.2 LED Driver Operational Description
      3. 7.3.3 Automatic Power Save
      4. 7.3.4 External Clock Detection
      5. 7.3.5 Logic Interface Operational Description
        1. 7.3.5.1 I/O Levels
        2. 7.3.5.2 GPO/INT Pins
        3. 7.3.5.3 TRIG Pin
        4. 7.3.5.4 ADDR_SEL0,1 Pins
        5. 7.3.5.5 CLK_32K Pin
    4. 7.4 Device Functional Modes
      1. 7.4.1 Modes of Operation
    5. 7.5 Programming
      1. 7.5.1 I2C-Compatible Serial Bus Interface
        1. 7.5.1.1 Interface Bus Overview
        2. 7.5.1.2 Data Transactions
        3. 7.5.1.3 Acknowledge Cycle
        4. 7.5.1.4 Acknowledge After Every Byte Rule
        5. 7.5.1.5 Addressing Transfer Formats
        6. 7.5.1.6 Control Register Write Cycle
        7. 7.5.1.7 Control Register Read Cycle
      2. 7.5.2 LED Controller Operation Modes
        1. 7.5.2.1 Disabled
        2. 7.5.2.2 LOAD Program
        3. 7.5.2.3 RUN Program
          1. 7.5.2.3.1 DIRECT Control
      3. 7.5.3 LED Controller Programming Commands
        1. 7.5.3.1 RAMP/WAIT
        2. 7.5.3.2 Set PWM
        3. 7.5.3.3 Go to Start
        4. 7.5.3.4 Branch
        5. 7.5.3.5 End
        6. 7.5.3.6 Trigger
    6. 7.6 Register Maps
      1. 7.6.1  Enable Register (Enable)
      2. 7.6.2  Operation Mode Register (OP Mode)
      3. 7.6.3  R Channel PWM Control (R_PWM)
      4. 7.6.4  G Channel PWM Control (G_PWM)
      5. 7.6.5  B Channel PWM Control (B_PWM)
      6. 7.6.6  R Channel Current (R_CURRENT)
      7. 7.6.7  G Channel Current (G_CURRENT)
      8. 7.6.8  B Channel Current (B_CURRENT)
      9. 7.6.9  Configuration Control (CONFIG)
      10. 7.6.10 R Channel Program Counter Value (R Channel PC)
      11. 7.6.11 G Channel Program Counter Value (G Channel PC)
      12. 7.6.12 B Channel Program Counter Value (B Channel PC)
      13. 7.6.13 Status/Interrupt Register
      14. 7.6.14 RESET Register
      15. 7.6.15 GPO Register
      16. 7.6.16 Program Memory
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Application with Charge Pump
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Capacitor Selection
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Application Without Charge Pump
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedures
    3. 8.3 Initialization Setup
      1. 8.3.1 Program Load and Execution Example
      2. 8.3.2 Direct PWM Control Example
  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 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Community Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, 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

5 Pin Configuration and Functions

YFQ Package
20-Pin DSBGA
Top View
LP5521 20186271.gif
NJA Package
24-Pin WQFN
Top View
LP5521 20186201.gif
YFQ Package
20-Pin DSBGA
Bottom View
LP5521 20186272.gif
NJA Package
24-Pin WQFN
Bottom View
LP5521 20186202.gif

Pin Functions LP5521TM

PIN TYPE(1) DESCRIPTION
NUMBER NAME
1A B A Current source output
1B G A Current source output
1C R A Current source output
1D SCL I I2C Serial interface clock input
1E SDA I/OD I2C Serial interface data input/output
2A VOUT A Charge pump output
2B ADDR_SEL1 I I2C address select input
2C ADDR_SEL0 I I2C address select input
2D GPO O General purpose output
2E EN I Chip enable
3A CFLY2N A Negative terminal of charge pump fly capacitor 2
3B CFLY1N A Negative terminal of charge pump fly capacitor 1
3C GND G Ground
3D CLK_32K I 32-kHz clock input
3E INT OD/O Interrupt output / General Purpose Output
4A CFLY2P A Positive terminal of charge pump fly capacitor 2
4B CFLY1P A Positive terminal of charge pump fly capacitor 1
4C VDD P Power supply pin
4D GND G Ground
4E TRIG I/OD Trigger input/output

Pin Functions LP5521YQ

PIN TYPE(1) DESCRIPTION
NUMBER NAME
1 CFLY2P A Positive pin of charge pump fly capacitor 2
2 CFLY1P A Positive pin of charge pump fly capacitor 1
3 VDD P Power supply pin
4 GND G Ground
5 CLK_32K I 32-kHz clock input
6 INT OD/O Interrupt output / General purpose output
7 TRIG I/OD Trigger input/output
8 N/C
9 N/C
10 N/C
11 N/C
12 N/C
13 SDA I/OD I2C serial interface data input/output
14 EN I Chip enable
15 SCL I I2C Serial interface clock input
16 GPO O General purpose output
17 R A Current source output
18 G A Current source output
19 B A Current source output
20 ADDR_SEL0 I I2C address select input
21 ADDR_SEL1 I I2C address select input
22 VOUT A Charge pump output
23 CFLY2N A Negative pin of charge pump fly capacitor 2
24 CFLY1N A Negative pin of charge pump fly capacitor 1
(1) A: Analog Pin, G: Ground Pin, P: Power Pin, I: Input Pin, I/O: Input/Output Pin, O: Output Pin, OD: Open Drain Pin
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