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MAX1688

Maxim Integrated
Part Number MAX1688
Manufacturer Maxim Integrated
Description Step-Up DC-DC Converters
Published Dec 8, 2017
Detailed Description 19-1426; Rev 0; 2/99 EVFAOLLULAOTWIOSNDKAITTAMSAHNEUEATL Step-Up DC-DC Converters with Precise, Adaptive Current Limi...
Datasheet PDF File MAX1688 PDF File

MAX1688
MAX1688

Overview
19-1426; Rev 0; 2/99 EVFAOLLULAOTWIOSNDKAITTAMSAHNEUEATL Step-Up DC-DC Converters with Precise, Adaptive Current Limit for GSM MAX1687 /MAX1688† General Description The MAX1687/MAX1688 step-up DC-DC converters deliver up to 2W from a single Li-Ion or three NiMH cells.
The devices are ideal for burst-load applications such as GSM cell phones and wireless LANs, where the RF power amplifiers require short, high current bursts.
The MAX1687/MAX1688 reduce battery surge current by slowly charging a reservoir capacitor, which supplies the necessary peak energy for the load current burst.
As a result, the peak battery current is limited, thus maximizing battery life and minimizing battery voltage sag and transient dips.
An internal synchronous rectifier provides over 90% conversion efficiency and eliminates the need for an external Schottky diode.
A logic shutdown mode reduces the shutdown current to only 3µA.
The devices can be disabled during current bursts (RF transmit mode) to elim...


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