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Analog Devices Inc. ADP8860ACBZ-R7
- Part No.:
- ADP8860ACBZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- LED Drivers
- Package:
- 20-UFBGA, WLCSP
- Datasheet:
-
ADP8860ACBZ-R7.pdf
- Description:
- IC LED DRV RGLTR I2C 20WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,067
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Product details
Overview
ADP8860ACBZ-R7 from Analog Devices is a 7-channel smart LED charge pump driver with I²C interface, automatic ambient light sensing, and programmable fade timing. It delivers up to six 30 mA LED sinks and one 60 mA sink, supports 1×/1.5×/2× gain selection, and operates from 2.5 V to 5.5 V input for mobile display backlighting.
For engineers reviewing the ADP8860ACBZ-R7 datasheet, ADP8860ACBZ-R7 pinout, ADP8860ACBZ-R7 application, or ADP8860ACBZ-R7 equivalent, key selection criteria include its dual phototransistor comparator inputs, <1 μA standby current, 128-level current programming, and WLCSP/LFCSP package options for space-constrained handheld designs.
Technical Context
The ADP8860ACBZ-R7 integrates a two-capacitor charge pump with automatic gain switching (1×, 1.5×, 2×) based on real-time LED sink headroom voltage monitoring. Its internal soft start limits inrush current to 3.75 mA typical during startup and gain transitions.
It features dual independent comparator inputs (CMP_IN and D6/CMP_IN2) for ambient light sensing, programmable L1/L2/L3 backlight levels, and hardware reset (nRST) with 50 μs noise filtering. All seven LED drivers support individual fade-in/fade-out timing (0.1–5.5 s) with linear/square/cubic rate selection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 5.5 V - supports single-cell Li-ion and Li-poly battery systems without external regulation. |
| LED Drive Capability | 6 × 30 mA + 1 × 60 mA sinks - enables mixed-brightness backlighting for RGB indicators and main displays. |
| Charge Pump Gains | 1×, 1.5×, 2× auto-selected - minimizes power loss by dynamically matching output voltage to LED forward voltage requirements. |
| Standby Current | <1 μA - extends battery life during display-off periods in portable devices. |
| I²C Interface | 400 kHz Fast Mode - allows full register configuration and status readback without CPU overhead. |
| Fade Timing Range | 0.1 s to 5.5 s, 16 programmable steps - supports smooth visual transitions compliant with human perception thresholds. |
| Ambient Light Inputs | Two dedicated comparator pins (CMP_IN, D6/CMP_IN2) - enables differential or dual-threshold ambient light detection for robust indoor/outdoor adaptation. |
Pinout & Package
ADP8860ACBZ-R7 is available in a 2 mm × 2.4 mm × 0.6 mm wafer-level chip-scale package (WLCSP) with 20-ball layout and exposed thermal pad connected to GND1/GND2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | 2.5 V–5.5 V supply input; feeds charge pump and internal logic; UVLO threshold at 2.05 V. |
| VOUT | Charge Pump Output | Regulated boosted output (up to 5.5 V); powers all LED sinks; isolated during fault conditions. |
| D1–D5, D7 | LED Sink Outputs | Individually programmable constant-current sinks; D1–D6 rated 30 mA, D7 configurable to 60 mA. |
| D6/CMP_IN2 | Shared Terminal | Configurable as LED sink 6 or second ambient light comparator input; requires 0.1 μF capacitor to ground when used as CMP_IN2. |
| CMP_IN | Ambient Light Input | Primary phototransistor comparator input; requires 0.1 μF capacitor to ground for noise filtering. |
| nRST | Hardware Reset | Active-low asynchronous reset with 50 μs noise filter; forces device into standby with default register state. |
| nINT | Interrupt Output | Open-drain active-low interrupt signal (e.g., fault notification or fade completion); requires external pull-up. |
| SCL/SDA | I²C Interface | Standard bidirectional I²C bus lines; support 400 kHz operation; require external pull-up resistors. |
| C1+/C1−, C2+/C2− | Charge Pump Capacitors | External flying capacitor connections; two 1 μF ceramic capacitors required for 1.5×/2× gain operation. |
| GND1/GND2 | Ground Terminals | Dual ground pins; exposed thermal pad must be soldered to both for thermal and electrical integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic Gain Selection | Real-time switching between 1×, 1.5×, and 2× charge pump gains based on minimum LED sink headroom voltage - maximizes efficiency across varying LED Vf and battery voltage. |
| Dual Ambient Light Sensing | Two independent comparator inputs (CMP_IN and D6/CMP_IN2) with programmable thresholds - enables adaptive backlight control under diverse lighting environments without host processor intervention. |
| Programmable Fade Profiles | 16 distinct fade-in/fade-out time settings (0.1–5.5 s) with selectable linear, square, or cubic ramp curves - ensures perceptually smooth brightness transitions. |
| Integrated Fault Protection | Short-circuit, overvoltage (5.8 V), and overtemperature (150 °C) protection with input-to-output isolation - eliminates need for external protection circuitry in compact designs. |
| Ultra-Low Standby Power | <1 μA quiescent current in standby mode - preserves battery charge during extended display-off intervals in mobile applications. |
Applications
| Mobile Display Backlighting | Mobile Phone Keypad Backlighting |
|---|---|
Use Scenario: Driving white LEDs behind small-format LCD panels in smartphones and tablets under variable ambient lighting. IC Role / Device Role / Timing Role: Smart LED driver managing current, fade timing, and automatic brightness adjustment via integrated phototransistor comparators. Use Value: Reduces system power consumption by up to 40% in office/dark modes versus fixed-brightness solutions, extending battery runtime. | Use Scenario: Illuminating alphanumeric keypads in low-light conditions while minimizing current draw during idle states. IC Role / Device Role / Timing Role: Independent 7-channel sink controller enabling per-key or grouped illumination with programmable fade-on/fade-off. Use Value: Enables responsive, low-power keypad lighting with no host CPU polling required due to autonomous ambient light response. |
| Dual RGB Backlighting | LED Indication |
Use Scenario: Simultaneous control of red/green/blue LED strings for color-tunable backlighting in automotive infotainment or medical displays. IC Role / Device Role / Timing Role: Multi-sink driver supporting independent current and timing programming per channel for precise chromatic control. Use Value: Achieves accurate white-point tuning and dynamic color balance using only one IC, reducing BOM count and PCB area. | Use Scenario: Status indication via discrete LEDs on portable diagnostic equipment or industrial handhelds. IC Role / Device Role / Timing Role: Low-quiescent-current LED sink providing reliable, programmable blink/fade behavior without firmware overhead. Use Value: Delivers <1 μA standby current and hardware-based fade control - critical for battery-powered devices requiring multi-year shelf life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3530TMX/NOPB | 6-channel I²C LED driver with 30 mA max per channel; no 60 mA sink; single ambient light input; no fade override. | Lacks dual comparator inputs and 60 mA capability - suitable only for simpler backlighting where high-current RGB or indicator LEDs are not required. | Select LM3530TMX/NOPB when cost sensitivity outweighs need for dual ALS inputs or higher-current sink capability. |
| MAX16984ATL+T | 6-channel boost-based LED driver; 40 mA per channel; analog/digital dimming; no integrated ALS or fade timing. | Requires external phototransistor interface and MCU-driven fade logic - increases firmware complexity and component count. | Choose MAX16984ATL+T only if higher per-channel current (40 mA) and boost architecture are mandatory, and ambient light automation is handled externally. |
Compared with LM3530TMX/NOPB and MAX16984ATL+T, the ADP8860ACBZ-R7 uniquely combines dual ambient light sensing, 60 mA sink capability, and hardware-programmable fade profiles - enabling fully autonomous, low-power backlight control without host CPU involvement.
Availability
ADP8860ACBZ-R7 is available at Aetrix Electronics and suitable for mobile display backlighting, keypad illumination, dual RGB backlighting, and LED indication requiring stable component supply across consumer electronics production cycles.
Supply support for ADP8860ACBZ-R7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets.
The ADP8860ACBZ-R7 belongs to Analog Devices' smart power management product line, designed specifically for ultra-low-power, autonomously adaptive LED backlighting in battery-operated portable devices.
FAQ
What is the maximum total output current supported by the ADP8860ACBZ-R7?
The ADP8860ACBZ-R7 supports a maximum total output current of 240 mA, achieved by driving six 30 mA LED sinks and one 60 mA sink simultaneously. This rating assumes proper thermal management and operation within the specified input voltage range (2.5 V to 5.5 V) and junction temperature limits (–40°C to +125°C).
Does the ADP8860ACBZ-R7 require external components for basic operation?
Yes, the ADP8860ACBZ-R7 requires four external ceramic capacitors: one 1 μF input capacitor (CIN), one 1 μF output capacitor (COUT), and two 1 μF flying capacitors (C1, C2) for charge pump operation. Additionally, 0.1 μF capacitors are recommended on CMP_IN and D6/CMP_IN2 pins when used for ambient light sensing.
How does automatic gain selection work in the ADP8860ACBZ-R7?
The ADP8860ACBZ-R7 monitors the minimum headroom voltage (VHR) across all active LED sinks. If VHR falls below ~200 mV, it automatically increments gain from 1× → 1.5× → 2×, with a 100 μs stabilization delay between steps. Gain reduces when headroom exceeds VDMAX - an internally calculated threshold ensuring sufficient margin at lower gain.
Can the ADP8860ACBZ-R7 drive LEDs with different forward voltages simultaneously?
Yes, the ADP8860ACBZ-R7 supports mixed LED configurations because each of the seven sinks operates independently with its own current setting and shares only the regulated VOUT rail. The automatic gain selection adapts to the sink requiring the highest headroom, ensuring all LEDs remain properly biased regardless of individual Vf variation.
What protection features are integrated into the ADP8860ACBZ-R7?
The ADP8860ACBZ-R7 includes short-circuit protection (triggers at VOUT < 0.55 × VIN), overvoltage protection (5.8 V threshold with 500 mV hysteresis), overtemperature shutdown (150 °C with 20 °C hysteresis), and input-to-output isolation during faults. It also features internal soft start to limit inrush current and UVLO with noise filtering.
ADP8860ACBZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Switched Capacitor (Charge Pump)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 7
- Voltage - Supply (Min):
- 2.5V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 4.3V ~ 5.5V
- Current - Output / Channel:
- 30mA, 60mA
- Frequency:
- 1MHz
- Dimming:
- I2C
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-WLCSP (1.96x2.36)
ADP8860ACBZ-R7 FAQ
1.How can I place an order for ADP8860ACBZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP8860ACBZ-R7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADP8860ACBZ-R7 reliable?
The price and inventory of ADP8860ACBZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP8860ACBZ-R7 is usually 5 days.
3.What payment methods are accepted for ADP8860ACBZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP8860ACBZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP8860ACBZ-R7?
ADP8860ACBZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP8860ACBZ-R7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADP8860ACBZ-R7?
For technical support, including ADP8860ACBZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP8860ACBZ-R7 requirements.
6.How does Aetrix verify that ADP8860ACBZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADP8860ACBZ-R7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADP8860ACBZ-R7 meets industry standards.
7.What is the process for return or replacement of ADP8860ACBZ-R7?
All ADP8860ACBZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP8860ACBZ-R7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADP8860ACBZ-R7 part is unused and in its original packaging.
Return procedure for ADP8860ACBZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADP8860ACBZ-R7 Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
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BCR420UE6433HTMA1
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BCR420UE6327HTSA1
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
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HV9910CLG-G
Microchip Technology
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CL2N8-G
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BCR420UW6-7
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BCR421UW6-7
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BCR420UFD-7
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BCR421UFD-7
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