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LP8557IAYFQR The Texas Instruments LP8557IAYFQR is a high-efficiency LED backlight driver for tablets. It features 6 channels and supports PWM dimming.
Mfr Part #:

LP8557IAYFQR

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments LP8557IAYFQR is a high-efficiency LED backlight driver for tablets. It features 6 channels and supports PWM dimming.
✓ Total Stock: 4,130 pcs
$ Price Range: $0.81

LP8557IAYFQR Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Rayichip ✓
Non-Authorised Inventory information
2,575 pcs
On Request
2575 pcs On Request 1 On Request On Request On Request On Request On Request
Optech Co.,Limited ✓
Non-Authorised Inventory information
1,555 pcs
On Request
1555 pcs On Request 1 On Request On Request 15+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

LP8557IAYFQR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Current
Dimming
Duty Cycle
Frequency
Internal Switch(s)
Mounting Type
Number of Outputs
Operating Temperature
Supplier Device Package
Topology
Type
Voltage
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LP8557IAYFQR Description

Short technical summary and product information.

The Texas Instruments LP8557IAYFQR is a high-efficiency DC-DC boost converter designed for LED backlight applications, particularly in tablets. This device integrates six 25-mA high-precision LED current sinks and operates with an input voltage range of 2.7V to 5.5V, suitable for single-cell Li-Ion battery applications. It offers adaptive boost voltage and LED current sink headroom controls to maximize system efficiency.

 

The LP8557IAYFQR supports a maximum output voltage of 28V and features a switching frequency up to 1MHz. Dimming is controlled via PWM input, and the device includes features like CABC (Constant Automatic Brightness Control) and Edge Rate Control. The topology is a Step-Up (Boost) converter.

 

Packaged in a 16-DSBGA, this LED driver is designed for surface mount applications. It operates within a temperature range of -30°C to 85°C. The device includes various protection features such as UVLO, TSD, and OVP/OCP for boost and LED outputs, along with LED open and short fault coverage.

LP8557IAYFQR Quick Information

Product Type: LED Driver
Canonical Name: LP8557IAYFQR High-Efficiency LED Backlight Driver
Subcategory: Power Management ICs

LP8557IAYFQR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

LP8557IAYFQR Estimated Pricing

Qty Low High
1+ $0.81 $0.81

Estimated market price range - modelled values for guidance only, not live distributor offers.

LP8557IAYFQR Features

  • High-efficiency LED backlight driver.
  • Six 25-mA high-precision LED current sinks.
  • 2.7-V to 5.5-V input voltage range.
  • Up to 28-V output voltage.
  • PWM dimming control.

LP8557IAYFQR Applications

  • Ideal for tablet backlighting.
  • Suitable for single-cell battery applications.
  • Used in portable electronic devices.
  • Provides precise LED current control.

LP8557IAYFQR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range for the LP8557IAYFQR?

The input voltage range is 2.7 V to 5.5 V.

How many LED channels does the LP8557IAYFQR have?

The LP8557IAYFQR has 6 LED channels.

What is the maximum output voltage of the LP8557IAYFQR?

The maximum output voltage is 28 V.

What is the LED current per channel for the LP8557IAYFQR?

The LED current per channel is 25 mA.

What is the operating temperature range of the LP8557IAYFQR?

The operating temperature range is -30°C to 85°C.

What type of package is the LP8557IAYFQR in?

The LP8557IAYFQR is in a 16-DSBGA package.

Does the LP8557IAYFQR support PWM dimming?

Yes, the LP8557IAYFQR supports PWM dimming.

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