SNOSCS3B September   2013  – March 2014 LMP91300

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Terminal Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 Handling Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 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  Oscillator
      2. 7.3.2  Detection
      3. 7.3.3  Comparator
      4. 7.3.4  Low RP, Close Target, Under Range Switch Enable
      5. 7.3.5  Programming The Switching Point And Hysteresis
      6. 7.3.6  Temperature Compensation
      7. 7.3.7  Power Supply
      8. 7.3.8  LED Drive
      9. 7.3.9  SWDRV
      10. 7.3.10 Overload Protection
    4. 7.4 Device Functional Modes
    5. 7.5 Programming
      1. 7.5.1 Burning Programmed Values Into The Registers
      2. 7.5.2 Single-Wire Interface (SWIF)
        1. 7.5.2.1 Write Operation
        2. 7.5.2.2 Read Operation
      3. 7.5.3 Usage Priority Of Registers
    6. 7.6 Register Maps
      1. 7.6.1  DET_H_MSB_INIT - Detection High Threshold MSB (Initial) (Address 0x66)
      2. 7.6.2  DET_H_LSB_INIT - Detection High Threshold LSB (Initial) (Address 0x67)
      3. 7.6.3  DET_L_MSB_INIT - Detection Low Threshold MSB (Initial) (Address 0x68)
      4. 7.6.4  DET_L_LSB_INIT - Detection Low Threshold LSB (Initial) (Address 0x69)
      5. 7.6.5  INFO0 - Device Information 0 (Address 0x6A)
      6. 7.6.6  INFO1 - Device Information 1 (Address 0x6B)
      7. 7.6.7  INFO2 - Device Information 2 (Address 0x6C)
      8. 7.6.8  INFO3 - Device Information 3 (Address 0x6D)
      9. 7.6.9  OSC_CONFIG_0 - Oscillator Configuration 0 Register (Address 0x6E)
      10. 7.6.10 45
      11. 7.6.11 OSC_CONFIG_1 - Oscillator Configuration 1 Register (Address 0x6F)
      12. 7.6.12 OSC_CONFIG_2 - Oscillator Configuration 2 Register (Address 0x70)
      13. 7.6.13 OSC_CONFIG_3_INIT - Oscillator Configuration 3 Register (Initial) (Address 0x71)
      14. 7.6.14 OUT_CONFIG_INIT - Output Configuration Register (Initial) (Address 0x72)
      15. 7.6.15 DET_H_MSB_FNL - Detection High Threshold MSB (Final) (Address 0x73)
      16. 7.6.16 DET_H_LSB_FNL - Detection High Threshold LSB (Final) (Address 0x74)
      17. 7.6.17 DET_L_MSB_FNL - Detection Low Threshold MSB (Final) (Address 0x75)
      18. 7.6.18 DET_L_LSB_FNL - Detection Low Threshold LSB (Final) (Address 0x76)
      19. 7.6.19 OSC_CONFIG_3_FNL - Oscillator Configuration 3 Register (Final) (Address 0x77)
      20. 7.6.20 OUT_CONFIG_FNL - Output Configuration Register (Final) (Address 0x78)
      21. 7.6.21 TEMP64 - Temperature In °C + 64 (Address 0x79)
      22. 7.6.22 PROXIMITY_MSB - Proximity MSB (Address 0x7A)
      23. 7.6.23 PROXIMITY_LSB - Proximity LSB (Address 0x7B)
      24. 7.6.24 STATUS - Device Status (Address 0x7E)
      25. 7.6.25 BURN_REQ - Burn Request (Address 0x7F)
  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  Quick Start
        2. 8.2.2.2  Determining The RP of an LC Tank
        3. 8.2.2.3  Component Selection And Layout
        4. 8.2.2.4  CF (CFA and CFB Terminals)
        5. 8.2.2.5  NTC (TEMP+ Terminal)
        6. 8.2.2.6  C1
        7. 8.2.2.7  CV+/EXT E
        8. 8.2.2.8  CBY (CBY Terminal)
        9. 8.2.2.9  RSENSE
        10. 8.2.2.10 REXT B (EXT B Terminal):
        11. 8.2.2.11 R1
        12. 8.2.2.12 SENSE1+ And SENSE2+ Terminals (RSENSE1+, RSENSE2+)
        13. 8.2.2.13 NPN
        14. 8.2.2.14 PNP
        15. 8.2.2.15 LED
        16. 8.2.2.16 LC Tank and INA and INB Terminals
        17. 8.2.2.17 SWDRV Terminal
        18. 8.2.2.18 P1 To P5 Terminals
        19. 8.2.2.19 GND Terminals
        20. 8.2.2.20 NC Terminals
        21. 8.2.2.21 Exposed DAP
        22. 8.2.2.22 SENSE-
      3. 8.2.3 Look-Up Table Calibration
  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 Trademarks
    2. 11.2 Electrostatic Discharge Caution
    3. 11.3 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5 Terminal Configuration and Functions

LMP91300 WQFN
Top View
30200803.gif

LMP91300 WQFN Terminal Functions

TERMINAL NUMBER NAME TYPE DESCRIPTION
1-5 P1-5 G Connect to Ground
6 GND G Board Ground
7 LED O LED Driver Output
8 V+/EXT E P Chip V+/External transistor, emitter
9 EXT B P External transistor, base
10 SWDRV O Drive for external transistor switch
11 SENSE- I Negative sense Input
12 SENSE1+ I Positive sense Input
13 SENSE2+/SWIF RX I Positive sense Input and Single Wire Interface receive
14 NC N/A No connect
15 GND G Board ground
16 NC N/A No connect
17 CFB I Filter capacitor value based on sensor oscillation frequency
18 CFA I Filter capacitor value based on sensor oscillation frequency
19 GND G Board ground
20 INA I External LC tank
21 INB I External LC tank
22 TEMP- G NTC ground, connect to board ground
23 TEMP+ I Analog Temperature Sensor Input
24 CBY O Bypass capacitor (56nF)
DAP DAP G Connect to Ground
LMP91300 DSBGA
30200806.gif

LMP91300 DSBGA Terminal Functions

TERMINAL NUMBER NAME TYPE DESCRIPTION
A1 INA I External LC tank
A2 INB I External LC tank
A3 TEMP+ I Analog Temperature Sensor Input
A4 CBY O Bypass capacitor (56nF)
B1 CFA I Filter capacitor value based on sensor oscillation frequency
B2 P2 G Connect to Ground
B3 TEMP- G NTC ground, connect to board ground
B4 P1 G Connect to Ground
C1 CFB I Filter capacitor value based on sensor oscillation frequency
C2 P5 G Connect to Ground
C3 P4 G Connect to Ground
C4 P3 G Connect to Ground
D1 SENSE2+/SWIF RX I Positive sense Input and Single Wire Interface receive
D2 SENSE- I Negative sense Input
D3 GND G Board ground
D4 LED O LED Driver Output
E1 SENSE1+ I Positive sense Input
E2 SWDRV O Drive for external transistor switch
E3 EXT B P External transistor, base
E4 V+/EXT E P Chip V+/External transistor, emitter