MAX1553 Series

High-Efficiency, 40V Step-Up Converters for 2 to 10 White LEDs

Manufacturer: Analog Devices Inc./Maxim Integrated

Catalog

High-Efficiency, 40V Step-Up Converters for 2 to 10 White LEDs

Part	Supplied Contents	Contents	Current - Output / Channel	Non-Isolated Output Count	Output Type	Total Output Count	Features	Utilized IC / Part	Voltage - Output	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Voltage - Supply (Min)	Internal Switch(s)	Topology	Package Width	Package Name	Package Length	Mounting Type	Package / Case	Applications	Type	Voltage - Supply (Max)	Dimming	Operating Temperature (Max)	Operating Temperature (Min)	Number of Outputs
Analog Devices Inc./Maxim Integrated MAX1553EVKIT	Board(s)	Board	20 mA	2 count	Non-Isolated	2	Dimmable	MAX1553 MAX1554	40 V	2.7 V	5.5 V
Analog Devices Inc./Maxim Integrated MAX1553ETA+T			480 mA						40 V			2.7 V	Yes	Step-Up (Boost)	3 mm	8-TDFN	3 mm	Surface Mount	8-WDFN Exposed Pad	Backlight	DC DC Regulator	5.5 V	Analog PWM	85 °C	-40 °C	1
Analog Devices Inc./Maxim Integrated MAX1553ETA-T			480 mA						40 V			2.7 V	Yes	Step-Up (Boost)	3 mm	8-TDFN-EP	3 mm	Surface Mount	8-WDFN Exposed Pad	Backlight	DC DC Regulator	5.5 V	Analog PWM	85 °C	-40 °C	1

Catalog

High-Efficiency, 40V Step-Up Converters for 2 to 10 White LEDs

Description

The MAX1553/MAX1554 drive white LEDs in series with a constant current to provide efficient display backlighting in cellular phones, PDAs, and other hand-held devices. The step-up converter includes an internal 40V, low RDSON, N-channel MOSFET switch for high efficiency and maximum battery life. The MAX1553 has a current limit of 480mA for driving two to six white LEDs, while the MAX1554 has a current limit of 970mA for driving up to 10 white LEDs.A single analog/PWM Dual Mode™ input provides two simple means of brightness adjustment. A separate enable input provides on/off control. Soft-start minimizes inrush current during startup.The MAX1553/MAX1554 are available in space-saving 8-pin TDFN 3mm x 3mm packages.ApplicationsCell PhonesColor Display BacklightPDA, Palmtop, and Wireless Handhelds