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LED Driver 16 Segment 12-Pin DSBGA T/R

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LM36922YFFR General Description

The LM36922 is an ultra-compact, highly efficient, two string white-LED driver designed for LCD display backlighting. The device can power up to 8 series LEDs at up to 25 mA per string. An adaptive current regulation method allows for different LED voltages in each string while maintaining current regulation.

The LED current is adjusted via an I2C interface or through a logic level PWM input. The PWM duty cycle is internally sensed and mapped to an 11-bit current thus allowing for a wide range of PWM frequencies and noise-free operation.

The device operates over the 2.5-V to 5.5-V input voltage range and ?40°C to 85°C temperature range.

Texas Instruments, Inc Inventory

Key Features

  • 1% Matched Current Sinks Across (Process,
    Voltage, Temp)
  • 3% Current Sink Accuracy Across (Process,
    Voltage, Temp)
  • 11-Bit Dimming Resolution
  • Up to 91.6% Solution Efficiency
  • Drives from One to Two Parallel LED Strings at up
    to 28 V
  • PWM Dimming Input
  • I2C Programmable
  • Selectable 500-kHz and 1-MHz Switching
    Frequency with Optional –12% shift
  • Auto Switch Frequency Mode (250 kHz, 500 kHz,
    1 MHz)
  • Four Configurable Overvoltage Protection
    Thresholds (17 V, 21 V, 25 V, 29 V)
  • Four Configurable Overcurrent Protection
    Thresholds (750 mA, 1000 mA, 1250 mA, 1500
  • Thermal Shutdown Protection
Texas Instruments, Inc Original Stock
Texas Instruments, Inc Inventory


Category Integrated Circuits (ICs)Power Management (PMIC)LED Drivers Mfr Texas Instruments
Series - Package Tape & Reel (TR)Cut Tape (CT)Digi-Reel®
Product Status Active Type DC DC Regulator
Topology Step-Up (Boost) Internal Switch(s) Yes
Number of Outputs 2 Voltage - Supply (Min) 2.5V
Voltage - Supply (Max) 5.5V Voltage - Output 38V
Current - Output / Channel 25mA Frequency 500kHz, 1MHz
Dimming I²C, PWM Applications Backlight
Operating Temperature -40°C ~ 85°C (TA) Mounting Type Surface Mount
Package / Case 12-UFBGA, DSBGA Supplier Device Package 12-DSBGA
Base Product Number LM36922 Number of channels 2
Vin (min) (V) 2.5 Vin (max) (V) 5.5
Vout (min) (V) 0 Vout (max) (V) 29.5
Switching frequency (max) (kHz) 1050 Duty cycle (max) (%) 94
LED current per channel (mA) 25 Peak efficiency (%) 92
Features Adjustable Switch Frequency, CABC, Direct PWM Dimming, Enable/Shutdown, I2C control, OVP, PWM control, Thermal shutdown Operating temperature range (°C) -40 to 85
Rating Catalog feature-number-of-digits
feature-number-of-segments 16 feature-number-of-led-outputs
feature-topology feature-process-technology
feature-input-output-type feature-minimum-operating-supply-voltage-v 2.5
feature-maximum-operating-supply-voltage-v 5.5 feature-output-voltage-v 29.5(Max)
feature-maximum-supply-current-ua feature-maximum-output-current-ma 25(Typ)
feature-maximum-power-dissipation-mw feature-packaging Tape and Reel
feature-rad-hard feature-pin-count 12
feature-supplier-package DSBGA feature-standard-package-name1 BGA
feature-cecc-qualified feature-esd-protection Yes
feature-military No feature-aec-qualified No
feature-aec-qualified-number feature-auto-motive No
feature-p-pap No feature-eccn-code EAR99
feature-svhc No

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Availability: 3563 PCS

Qty. Unit Price(USD) Ext. Price
1+ $1.010 $1.01
200+ $0.392 $78.40
500+ $0.378 $189.00
1000+ $0.372 $372.00

The prices below are for reference only.