ADD5207
ADD5207
ObsoleteFour-String, White LED Driver for LCD Backlight Application
- Part Models
- 1
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Overview
- White LED driver based on inductive boost converter
Integrated 40 V MOSFET with 1.5 A peak current limit
Input voltage range: 6 V to 21 V - Drives up to 4 LED current strings
LED current adjustable up to 25 mA for each channel
Headroom control to maximize efficiency
- Dimming controls 4-channel operation:
90 degree phase shift between channels
3-channel operation:
120 degree phase shift between channels - General
Thermal shutdown
Undervoltage lockout
14-lead, 4 mm × 3 mm LFCSP - See data sheet for additional features
The ADD5207 is a white LED driver for backlight applications based on high efficiency, current mode, step-up converter technology. It is designed with a 0.15 Ω, 1.5 A internal switch and a pin-adjustable operating frequency between 600 kHz and 1 MHz.
The ADD5207 contains four regulated current sources for uniform LED brightness. Each current source can drive up to 25 mA and the LED-driving current is pin adjustable by an external resistor. The ADD5207 drives up to four parallel strings of multiple series-connected LEDs with a ±1.5% current matching between strings.
The ADD5207 provides phase shift PWM brightness control methods. LED dimming control is achieved through the PWM input. The device includes an 8 kHz LED-dimming oscillator for driving each current source. The ADD5207 operates over an input voltage range of 6 V to 21 V, but the device can function with a voltage as low as 5.6 V.
The ADD5207 also has multiple safety protection features to prevent damage during fault conditions. If any LED is open, the device automatically disables the faulty current source. The internal soft start circuit prevents a high inrush current during startup. Thermal shutdown protection prevents thermal damage.
The ADD5207 is available in a low profile, thermally enhanced, 4 mm × 3 mm × 0.75 mm, 14-lead, RoHS-compliant lead frame chip scale package (LFCSP) and is specified over the industrial temperature range of −25°C to +85°C.
APPLICATIONS
- Notebook PCs UMPCs, and monitor displays
Documentation
Data Sheet 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADD5207ACPZ-RL | 14-Lead LFCSP (4mm x 3mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jul 5, 2022 - 21_0271 Qualification of an Alternate Adhesive Material and Molding Compound for Select LFCSP Packages |
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| ADD5207ACPZ-RL | Obsolete | |
|
Oct 18, 2016 - 16_0036 Assembly Relocation to Stats ChipPAC Jiangyin and Test Transfer to Stats ChipPAC Singapore of Select LFCSP Products |
||
| ADD5207ACPZ-RL | Obsolete | |
|
Aug 6, 2014 - 13_0230 Assembly and Test Transfer of Select 3.5x3.5, 4x3, 4x4, and 5x5mm LFCSP Products to STATS ChipPAC China |
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| ADD5207ACPZ-RL | Obsolete | |
|
Feb 6, 2024 - 24_0004 Discontinuance of ADD5207 |
||
| ADD5207ACPZ-RL | Obsolete | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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| Parts | Product Life Cycle | Description |
|---|---|---|
| LT3599 | RECOMMENDED FOR NEW DESIGNS | 4-String 120mA LED Driver with ±1.5% Current Matching |