MAX4373, MAX4374, MAX4375 저가, 마이크로파워, 하이 사이드 전류 감지 증폭기 + 비교기 + 기준전압 IC

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The MAX4373/MAX4374/MAX4375 low-cost, micropower, high-side current-sense supervisors contain a high-side current-sense amplifier, bandgap reference, and comparator with latching output. They feature a voltage output that eliminates the need for gain-setting resistors, making them ideal for today's notebook computers, cell phones, and other systems where battery/DC current monitoring is critical. High-side current monitoring is especially useful in battery-powered systems since it does not interfere with the ground path of the battery charger. The 0 to +28V input common-mode range is independent of the supply voltage, which ensures that the current-sense feedback remains viable even when connected to a battery pack in deep discharge.

The comparator output of the MAX4373/MAX4374/ MAX4375 is latched to provide a turn-off flag that doesn't oscillate. In addition, the MAX4374/MAX4375 contain a second comparator for use in window-detection functions. The MAX4373/MAX4374/MAX4375 are available in three different gain versions (T = +20V/V, F = +50V/V, H = +100V/V) and use an external sense resistor to set the sensitivity of the input voltage to the load current. These features offer a high level of integration, resulting in a simple and compact current-sense solution.

The MAX4373/MAX4374/MAX4375 operate from a single +2.7V to +28V supply and consume 50µA. They are specified for the extended operating temperature range (-40°C to +85°C) and are available in 8-pin and 10-pin µMAX® packages.

주요기능

애플리케이션/용도

Current-Sense Amplifier plus Internal Comparator and Bandgap Reference with Improved Accuracy
50µA Supply Current
Single +2.7V to +28V Operating Supply
1mV (max) Input Offset Voltage
2% (max) Full-Scale Accuracy
Internal Bandgap Reference (±1.6% Accuracy)
Latching Comparator Output
Three Gain Versions Available (+20V/V, +50V/V, +100V/V)
Wide 0 to +28V Common-Mode Range, Independent of Supply Voltage

	휴대전화
	일반 시스템/보드 레벨 전류 모니터링
	노트북 컴퓨터
	휴대용 배터리로 동작하는 시스템
	전원 관리 시스템
	정밀 전류 소스
	스마트 배터리 팩/충전기

Key Specifications: Current Sense Amplifiers

Part Number

CMVR (max) (V)

V_CC (min) (V)

V_CC (max) (V)

I_CC (typ) (µA)

Bidirectional Current-Sense

V_{SENSE_FS} (recommended) (mV)

V_OS (max) @25°C (µV)

A_V (Gain)

Gain Accuracy @25°C (max) (%)

-3dB BW (kHz)

Comparators

Reference

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

MAX4373

2.7

100
150

1,000

100 V/V
20 V/V
50 V/V

1.7

110
120
200

Bandgap

Yes

SOIC/8
uMAX/8

-40 to +85

$1.15 @ 1k

MAX4374

SOIC/14
uMAX/10

$1.50 @ 1k

MAX4375

SOIC/14
uMAX/10

$1.50 @ 1k

See All Current Sense Amplifiers (19)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.