LCSC Electronics logoLCSC Electronics svg logo
Sign In
USD
MAXIM MAX1686EUA+ product image
Images for reference only

MAXIM MAX1686EUA+

Manufacturer
MAXIM
MPN
MAX1686EUA+
LCSC Part #
C1530767
Packaging
MSOP-8
Customer #
Key Attributes
MSOP-8 Special Purpose Regulators RoHS
DatasheetMAXIM MAX1686EUA+
RoHS Compliance1 documents available
Alternative Parts1
Every Order Guarantee
100% Authentic · 30-Day Return or Replacement

Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Special Purpose Regulators
ManufacturerMAXIM
PackagingMSOP-8
FeaturesOutput discharge;Load disconnect;Overcurrent Protection
Help & FeedbackShow similar products (0) >

Introduction

AI Translation

The MAX1686 provides power for dual-voltage subscriber ID module (SIM) cards in portable applications such as GSM cellular phones. Designed to reside in the portable unit (cellular phone handset), the 1MHz charge pump converts a 2.7V to 4.2V input to regulated 5V output. The MAX1686H has a nominal output voltage of 5.0V, while the MAX1686 is set to 4.75V to reduce SIM card current drain. The charge pump has only 45μA quiescent supply current, which reduces to 3μA when a 3V-capable SIM card is being powered and the charge pump is disabled. An internal input/output shorting switch provides power for 3V SIM cards. The MAX1686/MAX1686H require only three external capacitors around their space-saving, thin (1mm) 8-pin μMAX packages. The MAX1686/MAX1686H charge pumps provide two modes of operation: 3V mode or 5V mode. The devices consist of an error amplifier, a 1.23V bandgap reference, an internal resistive feedback network, a 1MHz oscillator, high-current MOSFET drivers and switches, and a power-management block. In 3V mode (3/5 = IN), the input is connected to the output through a 2.5Ω switch. In 5V mode (3/5 = GND), the MAX1686’s output voltage is regulated at 4.75V (5.00V for the MAX1686H) with a 2.7V to 4.2V input and can deliver more than 12mA of load current. Designed specifically for compact applications, these regulators require only three small external capacitors. The Skip Mode control scheme provides high efficiency over a wide output current range. The devices offer a shutdown feature which actively discharges the output to ground and reduces the supply current to less than 1μA. Other features include soft-start, undervoltage lockout, and short-circuit protection.

Features

AI Translation
  • 2.7V to 4.2V Input Range
  • 12mA min Charge-Pump Output Current
  • 45μA Quiescent Supply Current
  • 0.1μA Supply Current in Shutdown Mode
  • 5.0V Regulated Charge-Pump Output (MAX1686H) 4.75V Regulated Charge-Pump Output (MAX1686)
  • Input-Output Shorting Switch for 3V Cards
  • Small External Components (Uses a 0.047μF, 0.1μF, and a 2.2μF Capacitor)
  • Output Driven to Ground in Shutdown Mode
  • Super-Small 8-Pin μMAX Package
  • Soft-Start and Short-Circuit Protection

Applications

AI Translation
  • GSM Cellular Phones
  • PCS Phones
  • Portable POS Terminals
  • Personal Communicators