MAX1577YETA+T Analog Devices Integrated Circuit (Small Outline No-lead) In Stock
Analog Devices MAX1577YETA+T is a regulated white LED driver with PWM dimming capability in a compact 8-pin TDFN package, designed to drive up to 4 LEDs in series from a single Li-ion cell. It operates from a 2.7 V to 5.5 V input, delivers up to 200 mA LED current, and supports 100:1 PWM dimming ratio. Available in tape-and-reel from authorized distributors with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline No-lead
- Pin Count
- 9
- Lifecycle
- ACTIVE
- Datasheet
- MAX1577YETA+T Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.9600(MOQ 500)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Drives up to 4 white LEDs in series with up to 200 mA regulated output current from a single Li-ion (2.7 V to 5.5 V) input supply
- PWM brightness dimming support with up to 100:1 dimming ratio enabling smooth, flicker-free LED backlight control in portable displays
- Regulated current output ensures uniform brightness across LED forward voltage variations without external sense resistors
- Tiny 8-pin 2 mm × 2 mm TDFN package minimizing PCB footprint for compact smartphone, tablet, and handheld device backlight circuits
Applications
The MAX1577YETA+T is optimized for white LED backlighting in handheld consumer electronics such as smartphones, PDAs, and portable media players powered by a single Li-ion cell. It regulates LED current for consistent brightness and supports PWM dimming for display brightness adjustment under microcontroller or baseband processor control. The compact TDFN package is ideal for slim-profile PCB designs where board space is tightly constrained.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many LEDs can MAX1577YETA+T drive, and what is its maximum output current for white LED backlighting?
The MAX1577YETA+T can drive up to 4 white LEDs connected in series, with a regulated output current of up to 200 mA. This current level is sufficient for bright LED backlight strings in small to medium portable displays. The regulated current output ensures consistent brightness regardless of LED forward voltage spread across production lots, eliminating the need for individual ballast resistors on each LED string.
What input voltage range does MAX1577YETA+T support, and is it suitable for single Li-ion battery applications?
The MAX1577YETA+T operates from an input voltage of 2.7 V to 5.5 V, which directly covers the discharge range of a single Li-ion cell (approximately 3.0 V to 4.2 V fully charged). This makes it ideal for single-cell battery-powered portable devices without requiring a battery management IC to regulate input voltage. The wide input range also accommodates 3.3 V and 5 V regulated rails in devices powered from USB or wall adapters.
How does PWM dimming work in MAX1577YETA+T, and what dimming ratio does it support for display brightness control?
The MAX1577YETA+T supports PWM (Pulse Width Modulation) brightness dimming with a dimming ratio of up to 100:1, allowing the LED backlight to be dimmed from full brightness down to 1% intensity. A PWM signal from the host microcontroller or display driver controls the on/off duty cycle of the LED string, with the driver maintaining constant current during the on phase for consistent color temperature. The 100:1 ratio enables smooth, perceptually linear brightness steps without flicker visible to the human eye.
What package does MAX1577YETA+T use, and how does the TDFN footprint benefit compact portable device PCB layouts?
The MAX1577YETA+T is housed in an 8-pin TDFN (Thin Dual Flat No-lead) package measuring 2 mm × 2 mm with an exposed thermal pad on the underside. This no-lead package reduces PCB footprint by roughly 50% compared to SOIC-8, and the exposed pad improves thermal dissipation for the up to 200 mA output current operation. The TDFN footprint is well-suited for the dense PCB layouts in smartphones and tablets where every square millimeter of board space is critical.
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Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
More from Analog Devices
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 500+ | $2.2100 | $1105.00 |
| 1000+ | $2.0800 | $2080.00 |
| 10000+ | $1.9600 | $19600.00 |
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