SLVSGH1A April   2023  – September 2023 TPS923652 , TPS923653 , TPS923654 , TPS923655

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Device Comparison Table
  7. 6 Pin Configuration and Functions
  8. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Adaptive Off-Time Current Mode Control
        1. 8.3.1.1 Switching Frequency Settings
        2. 8.3.1.2 Spread Spectrum
      2. 8.3.2 Setting LED Current
      3. 8.3.3 Undervoltage Lockout
      4. 8.3.4 Internal Soft Start
      5. 8.3.5 Dimming Mode
        1. 8.3.5.1 PWM Dimming
        2. 8.3.5.2 Analog Dimming
        3. 8.3.5.3 Hybrid Dimming
        4. 8.3.5.4 Flexible Dimming
      6. 8.3.6 CC/CV Charging Mode
      7. 8.3.7 Fault Protection
      8. 8.3.8 Thermal Foldback
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 TPS923654 Boost, 12-V Input, 1-A Output, 12-piece WLED Driver With Analog Dimming
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Inductor Selection
          2. 9.2.1.2.2 Input Capacitor Selection
          3. 9.2.1.2.3 Output Capacitor Selection
          4. 9.2.1.2.4 Sense Resistor Selection
          5. 9.2.1.2.5 Other External Components Selection
        3. 9.2.1.3 Application Curves
      2. 9.2.2 TPS923654 Buck-Boost, 24-V Input, 2-A Output, 4-piece WLED Driver with PWM Dimming
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
          1. 9.2.2.2.1 Inductor Selection
          2. 9.2.2.2.2 Input Capacitor Selection
          3. 9.2.2.2.3 Output Capacitor Selection
          4. 9.2.2.2.4 Sense Resistor Selection
          5. 9.2.2.2.5 Other External Components Selection
        3. 9.2.2.3 Application Curves
    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 Receiving Notification of Documentation Updates
    2. 10.2 Support Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

6 Pin Configuration and Functions

GUID-FE68F675-5C97-40B1-8B9D-5121044EC7D4-low.svg Figure 6-1 14-Pin VSONTop View
GUID-633C5429-0689-44CE-87A6-F101D9496231-low.svg Figure 6-2 12-Pin WSONTop View
GUID-13B294DB-4194-445D-A5F3-C249DD96C1D7-low.svg Figure 6-3 14-Pin SOT-23-THINTop View
Table 6-1 Pin Functions
PIN TYPE(1) DESCRIPTION
NAME SOT23-14 VSON-14 WSON-12
PGND 1 1 Thermal Pad G Power ground pin.
AGND 2 2 Thermal Pad G Analog ground pin.
VIN 3 3 1 P Input power pin.
VCC 4 4 2 P Internal LDO output pin. Connect with a 10-V, 1-μF capacitor to AGND.
ADIM/HD 5 5 3 I Analog dimming or hybrid dimming pin. Pull high for PWM dimming only, pull low for hybrid dimming, input PWM signal for analog dimming.
EN/PWM 6 6 4 I Enable pin or PWM dimming pin. Pull high for always on, pull low for disabling the device, input PWM signal for PWM dimming.
FAULT 7 7 5 O Open drain output pin. Pull low when fault is detected.
TEMP 8 8 6 I/O Thermal foldback pin. Put different resistor values to AGND to set different thermal foldback behavior curves.
FSET 9 9 7 I/O Switching frequency set pin, with range of 100 kHz to 2.2 MHz. Put different resistor values to AGND for different switching frequencies.
COMP 10 10 8 I/O Error-amilifier output pin. Connect capacitors to AGND. Different capacitor values determine different softstart times and bandwidths.
OVP 11 11 9 I Overvoltage detection pin. Put different resistor dividers to set the LED open detection thresholds.
CSN 12 12 10 I LED current sense positive pin.
CSP 13 13 11 I LED current sense negative pin.
SW 14 14 12 P Switching node pin. Internally connected to the low-side MOSFET. Connect with the power inductor and the schottky diode.
Thermal Pad N/A Y Y G Power/analog ground pin for WSON-12 package.
(1) I = Input, O = Output, P = Supply, G = Ground