MAX1910 Series

1.5x/2x High-Efficiency White LED Charge Pumps

Manufacturer: Analog Devices Inc./Maxim Integrated

Catalog

1.5x/2x High-Efficiency White LED Charge Pumps

Part	Number of Outputs	Package Length	Package Name	Package Width	Frequency	Internal Switch(s)	Operating Temperature (Max)	Operating Temperature (Min)	Current - Output / Channel	Topology	Applications	Voltage - Supply (Max)	Type	Mounting Type	Voltage - Supply (Min)
Analog Devices Inc./Maxim Integrated MAX1910EUB+	1	0.118 in	10-MSOP 10-TFSOP 10-uMAX/uSOP	3 mm	750 kHz	Yes	85 °C	-40 °C	120 mA	Switched Capacitor (Charge Pump)	Backlight	5.3 V	DC DC Regulator	Surface Mount	2.7 V
Analog Devices Inc./Maxim Integrated MAX1910EUB+T	1	0.118 in	10-MSOP 10-TFSOP 10-uMAX/uSOP	3 mm	750 kHz	Yes	85 °C	-40 °C	120 mA	Switched Capacitor (Charge Pump)	Backlight	5.3 V	DC DC Regulator	Surface Mount	2.7 V
Analog Devices Inc./Maxim Integrated MAX1910EUB+TG05
Analog Devices Inc./Maxim Integrated MAX1910EUB+TGC1

Catalog

1.5x/2x High-Efficiency White LED Charge Pumps

Description

The MAX1910/MAX1912 power LEDs with a regulated output voltage or current (up to 120mA) from an unregulated input supply (2.7V to 5.3V). These are complete DC-DC converters requiring only four small ceramic capacitors and no inductors. Input ripple is minimized by a unique regulation scheme that maintains a fixed 750kHz switching frequency over a wide load range. Also included are logic-level shutdown and soft-start to reduce input current surges at startup.The MAX1910 has two automatically selected operating modes: 1.5x and 2x. 1.5x mode improves efficiency at higher input voltages, while 2x mode maintains regulation at lower input voltages. The MAX1912 operates only in 1.5x mode.The MAX1910 and the MAX1912 are available in a space-saving 10-pin µMAX package.ApplicationsBackup Battery Boost ConvertersCell PhonesDigital Still CamerasMP3 PlayersPDAsWhite LED Backlighting