The MAX1701EEE+ is a 1-cell to 3-cell, high power step-up DC to DC converter in 16 pin QSOP package. This low noise converter is intended for use in battery powered wireless applications. It uses a synchronous rectified pulse width modulation (PWM) boost topology to generate 2.5V to 5.5V outputs from battery inputs such as one to three NiCd/NiMH cells or one Li-Ion cell. The MAX1701 has an internal 1A, 130Mohm N-channel MOSFET switch and 250Mohm P channel synchronous rectifier. It delivers 5% better efficiency than similar non-synchronous converters with its internal synchronous rectifier. The device also has pulse frequency modulation (PFM) standby mode to improve efficiency at light loads and 3μA shutdown mode. The MAX1701 includes two comparators to generate power good and low battery warning outputs. It also contains gain block that can be used to build a linear regulator using an external P channel pass device.
Input voltage range from 0.7V to 5.5V
Operating temperature range from -40°C to 85°C
Compact, high efficiency step-up converter with gain block function
Up to 96% efficiency and 1.1 VIN start-up
External clock frequency range from 200KHz to 400KHz
(EN)
