ADM8845ACPZ-REEL

Description：IC LED DRV RGLTR PWM 16LFCSP
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)

SKU:9bebad672fa3 Category: LED Drivers IC Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC LED DRV RGLTR PWM 16LFCSP
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)
Type：DC DC Regulator
Topology：Switched Capacitor (Charge Pump)
Internal Switch(s)：Yes
Number of Outputs：6
Voltage - Supply (Min)：2.6V
Voltage - Supply (Max)：5.5V
Voltage - Output：-
Current - Output / Channel：30mA
Frequency：1.5MHz
Dimming：PWM
Applications：Backlight, Camera Flash
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：16-VFQFN Exposed Pad, CSP
Supplier Device Package：16-LFCSP-VQ (3x3)
Grade：-
Qualification：-

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ADM8845ACPZ-REEL

Overview

The ADM8845ACPZ-REEL is a charge pump driver IC designed for LCD white LED backlights. It drives up to six LEDs from an input supply ranging from 2.6 V to 5.5 V, typical of Li-Ion batteries. The device incorporates a fractional charge pump with 1x, 1.5x, and 2x modes to maximize power efficiency. It features a maximum LED current matching of 1% and achieves up to 88% power efficiency over the Li-Ion voltage range. The component supports individual shutdown for main and sub-display LEDs and includes soft-start functionality to limit in-rush current.

Feature Summary

Integrates a fractional charge pump with multiple conversion ratios to optimize power efficiency across varying battery voltages
Provides precise current regulation with high matching accuracy between output channels
Supports independent control of main and sub-display LED strings through dedicated shutdown functions
Includes internal circuitry to manage in-rush current during startup sequences

Applications

LCD white LED backlighting systems
Mobile phone display illumination
Digital still camera flash circuits
PDA screen lighting

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package type matches the HVQCCN LCC16 footprint. Ensure the part number suffix corresponds to the reel packaging format. Validate RoHS compliance status as indicated in the product documentation before integration into production lines.

Selection Notes

Select this component when designing portable devices requiring efficient white LED driving from single-cell lithium-ion sources. Consider the specific charge pump mode requirements based on the target LED forward voltage. Evaluate the thermal performance within the compact QFN package constraints. Verify that the required LED current matching specifications align with the display uniformity needs of the application.

Part Context

This part belongs to the Analog Devices ADM8845 series of LED drivers. It is specifically engineered for portable electronics where space and power efficiency are critical. The device utilizes charge pump technology to boost voltage levels necessary for driving series-connected white LEDs from low battery voltages.