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MAX1681ESA

Name: MAX1681ESA
Rating: 4.7 (12 reviews)

IC REG CHARGE PUMP INV 8SOIC

製造商
製造商。部分 #MAX1681ESA
包 SOP8
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規格

Package	Tube,Tube
ProductStatus	Obsolete
Function	Ratiometric
OutputConfiguration	Positive or Negative
Topology	Charge Pump
OutputType	Fixed
NumberofOutputs	1
Voltage-Input(Min)	2V
Voltage-Input(Max)	5.5V
Voltage-Output(Min/Fixed)	-Vin, 2Vin
Current-Output	125mA
Frequency-Switching	500kHz, 1MHz
SynchronousRectifier	No
OperatingTemperature	-40°C ~ 85°C (TA)
MountingType	Surface Mount
Package/Case	8-SOIC (0.154, 3.90mm Width)

概述

Description

The MAX1681ESA is Maxim Integrated’s buck regulator/LED-driver IC in the MAX1681 family. It provides high-efficiency, fixed-frequency, current-mode control for a step-down converter and typically includes features such as soft-start, adjustable current limit, enable/shutdown, and protections (UVLO, overcurrent, thermal). The “ESA” suffix usually indicates an extended-temperature (industrial/automotive) grade variant and a specific package option. Common uses include LED backlight drivers for displays and general DC-DC power conversion in automotive or industrial equipment. For exact electrical specs, pinout, and operating conditions, consult the MAX1681ESA datasheet.

Features

Here are the typical features of the MAX1681ESA (datasheet should be consulted for exact specs):
- 1-channel constant-current LED driver
- Buck-boost (step-up/step-down) regulator to drive LEDs from a wide input range
- External sense resistor sets LED current
- PWM and DC dimming capability for brightness control
- Integrated high-side switch for efficient operation
- Soft-start and current-limit to prevent LED current overshoot
- Protections: overcurrent, short-circuit, overvoltage, and thermal shutdown
- Low quiescent current and fast transient response
- Small 8-pin package (RoHS-compliant), suitable for compact backlighting/applications
Note: Exact input range, LED current range, switching frequency, and package variants may vary by revision. Refer to the official MAX1681ESA datasheet for precise electrical specifications and recommended operating conditions.

Package

MAX1681ESA is available in an 8-pin SOIC (SOP-8) package.

Pinout

Pin count: 8 pins (8-pin package, SOP/SSOP as used by MAX1681ESA).
Function: High-efficiency boost DC-DC converter used as a constant-current LED driver (current-mode boost regulator for LED backlighting).

Manufacturer

Manufacturer: Maxim Integrated (Maxim Integrated Products), now part of Analog Devices (ADI).
What kind of company: A semiconductor company that designs and sells analog and mixed-signal integrated circuits (e.g., power management, interfaces, sensors).

Application

Applications: offline switch‑mode power supplies (isolated flyback and buck/boost topologies), AC adapters and wall-wart supplies, telecom/data-communications power bricks, battery chargers, and LED lighting drivers in consumer electronics.