12 June 2006 - New Japan Radio Co., Ltd. is pleased to announce the NJU7777 and the NJU7254. The NJU7777 is a CMOS low dropout regulator IC featuring high precision, low current consumption and a high ripple rejection ratio. Housed in small package, it is ideal as a power source for battery-operated portable devices. The NJU7254 is a 2-output low dropout regulator IC also suitable as a power source for small portable devices.
The NJU7777 is an LDO (Low dropout) regulator with half the mount size of conventional products. Using the refined manufacturing process of our conventional NJU7771, which features low current consumption and a high ripple rejection ratio (PSRR), the NJU7777 now can be housed in an ultra-small SC82AB package (2.0×2.1×0.95mm), which has a 48% smaller mount size than our conventional product, SOT-23-5 (2.9×2.8×1.2mm).
While its current consumption is as low as 18µA (typ.), the NJU7777 features a 65dB ripple rejection ratio, maximum 150mA output current, ±1.0% output voltage accuracy, 0.13V input/output electrical potential difference (standard, at 100mA output with 3.0V product), an overheat protection circuit and an overcurrent protection circuit for small battery-operated portable devices such as mobile phones, DSCs (digital still cameras) and DVCs (digital video cameras).
The NJU7254 is a 2-circuit low dropout regulator that employs two identical LDO circuits in same space and package as one output LDO can occupy. Using CMOS processing, the NJU7254 features a high ripple rejection ratio as well as low current consumption (30µA and 89% reduction for a 270µA bipolar product), which is ideal for small, portable and highly integrated battery-operated devices with dispersion type power sources.