MAX34406：Quad Current-Sense Amplifier with Overcurrent Threshold Comparators

Accurate Current Measurement with Automatic Overcurrent Shutdown for Four Supply Rails

The MAX34406 is a quad, high-side, unidirectional, current-sense amplifier that offers precision accuracy. It provides analog outputs for each of the four amplifiers that can be routed to an external ADC, and contains four overcurrent comparators with a fixed 1.0V threshold. All four comparators are logically ORed, and the result can be delayed/filtered with an external capacitor before it is fed to a latched common shutdown open-drain output pin.

Key Features

Four Precision Current-Sense Amplifiers
Fixed Gains of 25V/V, 50V/V, 100V/V, and 200V/V
Less Than ±600µV of Input Offset
Less Than ±0.6% of Gain Error (T/F/H) or ±0.8% of Gain Error (W)
Wide 2.0V to 28V Common Mode Range
Analog Voltage Outputs for Each Amplifier
Independent Overcurrent Comparators with Fixed 1.0V Threshold
Low Power Consumption
-40°C to +85°C Temperature Range
Small 24-Pin TQFN (4mm x 4mm) Package

Applications/Uses

Base Stations
Industrial Controls
Network Switches/Routers
Servers
Smart Grid Network Systems

DataSheet

title	Download file
MAX34406 Data Sheet	MAX34406.pdf

Parametrics

Part Number	Output Format	CMVR (V)	CMVR (V)	V_CC (V)	V_CC (V)	I_CC (µA)	Bi-Dir. Curr. Sense	V_{SENSE_FS} (mV)	V_OS @25°C (µV)	Gain	Gain Accuracy @25°C (%)	BW (kHz)	Comp- arators	Reference	Oper. Temp. (°C)	Package/Pins	Budgetary Price
Part Number	Output Format	min	max	min	max	typ	Bi-Dir. Curr. Sense	recomm.	max	Gain	max	@ -3dB	Comp- arators	Reference	Oper. Temp. (°C)	Package/Pins	See Notes
MAX34406	Voltage	2	28	2.7	5.5	100	No	5 10 20 40	600	25 V/V 50 V/V 100 V/V 200 V/V	0.6	15 30 60 125	4	Bandgap	-40 to +85	TQFN/24	$1.62 @1k

Design kits & evaluation modules

MAX34406EVKIT

Quality and Environmental Data

MAX34406.pdf

Ordering Information

Part Number	Status	Package	Temp	RoHS
MAX34406FETG+	Active	TQFN,;24 pin;16.8 mm²	-40°C to +85°C	Lead Free
MAX34406FETG+T	Active	TQFN,;24 pin;16.8 mm²	-40°C to +85°C	Lead Free
MAX34406HETG+	Active	TQFN,;24 pin;16.8 mm²	-40°C to +85°C	Lead Free
MAX34406HETG+T	Active	TQFN,;24 pin;16.8 mm²	-40°C to +85°C	Lead Free
MAX34406HETG+TW	Active	TQFN;	-40°C to +85°C	See data sheet
MAX34406TETG+	Active	TQFN,;24 pin;16.8 mm²	-40°C to +85°C	Lead Free
MAX34406TETG+T	Active	TQFN,;24 pin;16.8 mm²	-40°C to +85°C	Lead Free
MAX34406WETG+	Active	TQFN,;24 pin;16.8 mm²	-40°C to +85°C	Lead Free
MAX34406WETG+T	Active	TQFN,;24 pin;16.8 mm²	-40°C to +85°C	Lead Free

MAX34406.pdf MAX34406