My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX4376HAUK
- Part No.:
- MAX4376HAUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4376HAUK.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,868
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX4376HAUK from Maxim Integrated is a single-channel, high-side current-sense amplifier with fixed +100V/V gain, 0V to +28V input common-mode range independent of supply voltage, ±0.5% typical full-scale accuracy at +25°C, and 1.2MHz bandwidth (gain = +100V/V). It operates from +3V to +28V supply, draws 1mA typical supply current, and supports automotive temperature range (−40°C to +125°C), enabling precise battery-current monitoring in notebook computers and smart battery packs.
For engineers reviewing the MAX4376HAUK datasheet, MAX4376HAUK pinout, MAX4376HAUK application, or MAX4376HAUK equivalent, key selection criteria include its fixed +100V/V gain, SOT23-5 package footprint, high common-mode rejection (90dB), buffered 2mA-output drive capability, and functional operation down to 0V common-mode - critical for deep-discharge battery sensing and charger-loop integration.
Technical Context
The MAX4376HAUK implements a precision high-side current-sensing architecture using an internal current-mirror-based amplifier with fixed +100V/V gain, eliminating external gain-setting resistors. Its input stage maintains high impedance at RS−, ensuring minimal loading on the sense resistor and accurate VSENSE = (VRS+ − VRS−) measurement.
Common-mode voltage independence is achieved via proprietary BiCMOS circuitry that decouples input-stage biasing from VCC, enabling valid operation when VRS+ = 0V (e.g., fully discharged battery) while VCC remains ≥ +3V. Output buffering provides low output resistance (5Ω) and stable 2mA drive into ground-referenced loads without phase reversal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | +100V/V - fixed internal gain enables direct 100× scaling of sense voltage without external resistors |
| Common-Mode Input Range | 0V to +28V - functional at 0V common-mode, supporting deep-discharge battery monitoring |
| Full-Scale Sense Voltage | 150mV - maximum differential input before saturation; sets minimum RSENSE for target ILOAD |
| Bandwidth | 1.2MHz - sufficient for closed-loop battery-charger control with fast transient response |
| Supply Current | 1mA (typ) - ultra-low quiescent current preserves battery life in portable systems |
| Total Output Error | ±0.5% (typ, TA = +25°C, VSENSE = 100mV) - high accuracy enables fuel-gauge-grade current reporting |
| Output Drive Capability | 2mA - drives ADC input or comparator directly without external buffer |
Pinout & Package
MAX4376HAUK is housed in a RoHS-compliant 5-pin SOT23 package (outline 21-0057, land pattern 90-0174), optimized for space-constrained portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Amplified output voltage | Buffered, rail-to-rail capable output proportional to (VRS+ − VRS−) × 100; drives up to 2mA |
| 2 - GND | Analog ground reference | Return path for internal circuitry and output load; must be connected to system ground |
| 3 - VCC | Positive supply input | +3V to +28V power supply; powers internal amplifier and output buffer |
| 4 - RS+ | High-side sense resistor connection | Connects to source/battery side of external sense resistor; withstands up to +30V absolute max |
| 5 - RS− | Load-side sense resistor connection | Connects to load side of external sense resistor; differential input with ±8V max rating |
Key Features
| Feature | Design Value |
|---|---|
| Fixed +100V/V gain | Eliminates gain-setting resistors, reducing BOM count and layout sensitivity in high-accuracy current paths |
| 0V to +28V common-mode range | Enables uninterrupted current monitoring during battery deep discharge (0V) while maintaining VCC ≥ +3V |
| ±0.5% full-scale accuracy (typ) | Supports fuel-gauge-class state-of-charge estimation without calibration in portable systems |
| 1.2MHz bandwidth | Meets dynamic response requirements for real-time battery-charger loop control and overcurrent protection |
| Buffered 2mA output drive | Directly interfaces with 12-bit ADCs or comparators without external op-amp stages |
Applications
| Smart Battery Fuel Gauge | Battery Charger Current Loop |
|---|---|
|
Use Scenario: Real-time bidirectional current measurement in Li-ion smart battery packs for accurate state-of-charge (SoC) calculation. IC Role / Device Role / Timing Role: High-side current-sense amplifier measuring charge/discharge current across a 10mΩ sense resistor with ±0.5% accuracy. Use Value: Enables <1% SoC error over full battery cycle by delivering stable, temperature-invariant output proportional to ILOAD × RSENSE × 100. |
Use Scenario: Closed-loop current regulation in switching battery chargers for notebooks and tablets. IC Role / Device Role / Timing Role: High-bandwidth (1.2MHz) feedback sensor feeding error signal to charger controller PWM block. Use Value: Supports fast transient response to load steps and prevents overcurrent faults during rapid battery charging transitions. |
| Notebook System Power Monitoring | Automotive Body Control Module |
|
Use Scenario: Board-level current monitoring for CPU/GPU VRMs and peripheral rails in ultrabooks. IC Role / Device Role / Timing Role: Single-point high-side monitor on 12V main rail with 100mV full-scale sense voltage. Use Value: Delivers 10V output for 100mV sense drop, simplifying ADC interface and improving SNR versus low-gain alternatives. |
Use Scenario: Load-current supervision in 12V automotive body control modules (BCM) for LED lighting and window motors. IC Role / Device Role / Timing Role: High-accuracy current sensor operating across −40°C to +125°C ambient with no ground-path interference. Use Value: Ensures reliable short-circuit detection and thermal derating without compromising battery ground integrity in ISO 16750-compliant systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4376FAUK+T | +50V/V gain, same SOT23-5 package, identical temp range and supply specs | Lower gain requires larger RSENSE for same output swing; better suited for higher-current, lower-precision monitoring | Select when full-scale output must be ≤5V for 100mV sense voltage or when reduced gain improves noise immunity |
| INA213AIDCKR | +50V/V gain, 2.7V–26V supply, 1.2MHz BW, ±0.3% gain error, SC70-6 package | SC70-6 vs SOT23-5 footprint; lower offset but narrower common-mode range (0V to +26V) | Choose when board space allows SC70 and tighter gain error tolerance is required over extended temperature |
Compared with MAX4376HAUK, the MAX4376FAUK+T offers half the gain in identical packaging for higher-current sensing, while the INA213AIDCKR trades SOT23 compatibility for improved gain accuracy in a different footprint - neither is pin-compatible, but both serve overlapping high-side monitoring roles with distinct trade-offs in gain, accuracy, and layout.
Availability
MAX4376HAUK is available at Aetrix Electronics and suitable for notebook computers, battery chargers, and automotive body control modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MAX4376HAUK includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for power, sensing, and interface applications in industrial, automotive, and computing markets.
The MAX4376 family targets high-accuracy, high-voltage-range current sensing in battery-powered and automotive systems where ground-path integrity and deep-discharge operation are mandatory design requirements.
FAQ
What is the gain configuration of the MAX4376HAUK?
The MAX4376HAUK features a fixed internal gain of +100V/V, as indicated by the "H" suffix in the part number. This eliminates the need for external gain-setting resistors and ensures consistent amplification of the sense voltage (VRS+ − VRS−) across all units. The MAX4376HAUK delivers a 10V output for a 100mV sense voltage, enabling high-resolution ADC interfacing without additional signal conditioning stages.
Does the MAX4376HAUK operate at 0V common-mode voltage?
Yes, the MAX4376HAUK functions down to 0V common-mode input voltage, independent of its +3V to +28V supply range. This capability is explicitly guaranteed in the datasheet's common-mode input range specification (0V to +28V) and enables reliable current monitoring even when the battery pack is fully discharged. The MAX4376HAUK maintains accuracy and output stability throughout this range, making it ideal for smart battery fuel gauges.
What package type does the MAX4376HAUK use?
The MAX4376HAUK is packaged in a lead(Pb)-free, RoHS-compliant 5-pin SOT23 package (package code U5+1, outline 21-0057). Its compact footprint measures 2.9mm × 1.6mm × 1.1mm and supports standard reflow soldering profiles, including peak temperatures up to +260°C. The top mark "ADOI" identifies the +100V/V gain variant within the MAX4376HAUK family.
Can the MAX4376HAUK drive a 12-bit ADC directly?
Yes, the MAX4376HAUK can directly drive most 12-bit SAR or delta-sigma ADCs. Its buffered output delivers up to 2mA into a ground-referenced load and exhibits only 5Ω output resistance, minimizing voltage drop and settling errors. With ±0.5% typical full-scale accuracy and 1.2MHz bandwidth, the MAX4376HAUK ensures high-fidelity current data acquisition without external buffering - confirmed by typical operating characteristics showing <1% settling in under 800ns.
What is the supply current consumption of the MAX4376HAUK?
The MAX4376HAUK draws 1mA typical supply current per amplifier at +25°C, with a maximum of 2.2mA over the full −40°C to +125°C temperature range. This ultra-low quiescent current is maintained across its entire +3V to +28V supply range, as verified by Figure 2 in the datasheet. Such efficiency makes the MAX4376HAUK especially suitable for always-on battery-monitoring circuits in portable and automotive applications.
MAX4376HAUK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 2 MHz
- Current - Input Bias:
- 120 µA
- Voltage - Input Offset:
- -
- Current - Supply:
- 1mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 28 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX4376HAUK FAQ
1.How can I place an order for MAX4376HAUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4376HAUK on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX4376HAUK reliable?
The price and inventory of MAX4376HAUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4376HAUK is usually 5 days.
3.What payment methods are accepted for MAX4376HAUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4376HAUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4376HAUK?
MAX4376HAUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4376HAUK order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX4376HAUK?
For technical support, including MAX4376HAUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4376HAUK requirements.
6.How does Aetrix verify that MAX4376HAUK is sourced from the original manufacturer or authorized distributors?
All MAX4376HAUK products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX4376HAUK meets industry standards.
7.What is the process for return or replacement of MAX4376HAUK?
All MAX4376HAUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX4376HAUK, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX4376HAUK part is unused and in its original packaging.
Return procedure for MAX4376HAUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4376HAUK Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
