MAX8607
1MHz PWM Boost Converter for 1.5A White LED Camera Flash
Highest Current, White LED, Step-Up DC-DC for the Brightest Camera Flash Delivers 1.5A Regulated Current with Up to 84% Efficiency
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Overview
Features and Benefits
- Supports Lumileds and Other High-Power White LEDs
- Independently Set Flash/Movie Currents
- Flash-Mode Current Up to 1.5A
- Movie-Mode Current Up to 360mA
- Disco Mode with Fixed 5V (Up to 1A) and 80mA LED Current
- 84% Efficiency (PLED / PBATT) at 1.1A
- TA Derating Function for LED Thermal Protection
- Output Overvoltage Protection (OVP)
- Soft-Start Eliminates Inrush Current
- 1MHz PWM Operation at All Loads
- Small External Components
- 2.7V to 5.5V Input Voltage Range
- 0.1µA Shutdown Mode
- 14-Pin, 3mm x 3mm TDFN Package
Product Details
The MAX8607 white LED boost converter is optimized for camera flash/strobe applications using high-current white LEDs. The MAX8607 integrates a 1MHz PWM boost converter, 1.5A low-dropout (LDO) current regulator, and logic control circuitry for a space-saving LED flash design. Two logic inputs control four modes of operation: shutdown mode reduces the quiescent current to 0.1µA (typ), movie mode supplies up to 360mA of LED current for continuous lighting, flash mode supplies up to 1.5A of LED current for short-duration lighting during an exposure, and disco mode supplies +5V (at up to 1A) to external circuits while driving the LED with a fixed 80mA current.
The internal 1MHz boost converter features an adaptive control scheme with an internal switching MOSFET and synchronous rectifier to improve efficiency and minimize external component count. The MAX8607 is available in a 14-pin, 3mm x 3mm TDFN package (0.8mm max height).
Applications
- Camera Flashes/Strobes
- Cell Phones/Smartphones
- PDAs and Digital Cameras
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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.