My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1976EZT180
- Part No.:
- MAX1976EZT180
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MAX1976EZT180.pdf
- Description:
- IC REG LINEAR 300MA LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:1,157
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX1976EZT180 from Maxim Integrated is a low-dropout linear regulator (LDO) delivering 300mA continuous output current with ±0.5% output voltage accuracy, 100mV dropout at full load, and a fixed 1.80V output. It operates from 1.62V to 3.6V input, features active-low open-drain RESET with 70ms delay, and targets power rails in portable battery-powered systems such as notebook computers and cellular handsets.
For engineers reviewing the MAX1976EZT180 datasheet, MAX1976EZT180 pinout, MAX1976EZT180 application, or MAX1976EZT180 equivalent, key selection criteria include guaranteed 300mA load capability under low-input-voltage conditions (≥1.62V), precise 1.80V output tolerance, thermal and short-circuit protection, and compatibility with compact thin SOT23-6 layouts requiring minimal external components (1µF IN / 4.7µF OUT ceramic).
Technical Context
The MAX1976EZT180 integrates a P-channel MOSFET pass transistor (RDS(ON) = 0.33Ω) enabling supply current independence from load and dropout voltage - critical for battery life in portable devices. Its internal feedback network sets a fixed 1.80V output without external resistors.
RESET functionality is implemented via a precision comparator monitoring VOUT; it asserts low when VOUT falls below 82.5% of nominal (1.485V) and deasserts after ≥70ms once regulation is achieved. Shutdown is logic-controlled (active-low SHDN), reducing quiescent current to <1µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.80V ±0.5% - eliminates need for external feedback resistors and ensures stable core voltage for 1.8V logic domains. |
| Max Output Current | 300mA continuous - supports moderate-power digital ICs like baseband processors or memory interfaces. |
| Dropout Voltage | 100mV at 300mA - enables operation down to VIN = 1.9V, extending usable battery life in single-cell Li-ion or Li-poly systems. |
| Input Voltage Range | 1.62V to 3.6V - compatible with partially discharged batteries and multi-rail power architectures. |
| RESET Delay | 70ms (min) - meets microprocessor reset timing requirements for reliable boot sequencing in embedded systems. |
| Quiescent Current | 90µA typical at 300mA - maintains low static power draw during active operation, critical for always-on subsystems. |
| Thermal Protection | 165°C shutdown with 15°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking. |
Pinout & Package
MAX1976EZT180 is housed in a 6-pin thin SOT23-6 package (package code Z6-1), height <1.1mm, footprint 2.9mm × 1.6mm. Pin 5 (I.C.) is internally connected and must be left floating or tied to GND per layout guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator Input | Accepts 1.62V–3.6V supply; requires ≥1µF ceramic bypass to GND close to pin for stability. |
| 2 (GND) | Ground Reference & Heatsink | Serves as primary return path and thermal dissipation node; must connect to large copper area. |
| 3 (SHDN) | Active-Low Shutdown Control | Pull low to disable regulator output and reduce IQ to <1µA; high-impedance when pulled high or tied to IN. |
| 4 (RESET) | Open-Drain Reset Flag | Asserts low during power-up/brownout; rises 70ms after VOUT reaches regulation; requires external pull-up. |
| 5 (I.C.) | Internally Connected | No external connection required; may be left floating or tied to GND per layout best practice. |
| 6 (OUT) | Regulated Output | Delivers up to 300mA at 1.80V; requires 4.7µF low-ESR ceramic capacitor to GND for transient response and PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Low 1.62V minimum input | Enables direct regulation from single-cell Li-ion (2.5V–4.2V) down to end-of-discharge (~2.0V), maximizing battery utilization. |
| ±0.5% output accuracy | Meets tight voltage margin requirements for 1.8V I/O and core supplies in FPGAs, ASICs, and RF transceivers. |
| 70ms RESET assertion delay | Guarantees sufficient hold time for microcontroller reset circuits, eliminating need for external RC timing networks. |
| Logic-controlled shutdown | Allows system-level power gating via GPIO; reduces total system standby current by disabling LDO output and internal bias. |
| P-channel MOSFET pass element | Eliminates base-drive current loss, maintaining 90µA quiescent current even at full 300mA load and near-dropout conditions. |
Applications
| Notebook Computer Power Rail | Cellular Handset Baseband Supply |
|---|---|
Use Scenario: Providing clean, regulated 1.8V supply to DDR memory interface and CPU I/O banks in ultra-thin notebooks. IC Role / Device Role / Timing Role: Primary LDO delivering stable 1.8V rail with fast transient response to handle burst memory access currents. Use Value: 100mV dropout extends runtime on single-cell Li-ion batteries; ±0.5% accuracy prevents I/O timing violations during voltage droop. | Use Scenario: Powering baseband processor core and peripheral logic in 3G/4G smartphones operating from shared battery rail. IC Role / Device Role / Timing Role: Fixed-output LDO generating 1.8V domain synchronized with system reset signaling via integrated RESET output. Use Value: 70ms RESET delay ensures reliable processor initialization; 300mA capacity supports peak processing loads without brownout. |
| Digital Camera Image Sensor Bias | PCMCIA Card Interface Regulator |
Use Scenario: Supplying low-noise 1.8V bias to CMOS image sensor analog front-end and ADC reference circuitry. IC Role / Device Role / Timing Role: Low-PSRR, low-noise LDO ensuring minimal supply-induced pixel noise and quantization error. Use Value: 86µVRMS output noise and 70dB PSRR at 1kHz preserve dynamic range and SNR in high-resolution imaging. | Use Scenario: Generating 1.8V VCC for PCMCIA Type II card slots in industrial handheld terminals. IC Role / Device Role / Timing Role: Compact-area LDO meeting JEDEC PCMCIA power sequencing requirements with integrated RESET handshake. Use Value: Thin SOT23-6 footprint fits constrained card-edge space; RESET output signals host controller when rail is stable. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS73118DBVR | Fixed 1.8V output, 300mA, 150mV dropout at 300mA, 1.7V min input, no integrated RESET. | Lacks RESET output; requires external supervisor IC for power-on reset sequencing. | Select when RESET is handled elsewhere and lower cost is prioritized over integration. |
| MCP1825-1802E/DB | Fixed 1.8V output, 500mA, 230mV dropout at 300mA, 2.3V min input, no RESET. | Higher minimum input limits use in low-VIN battery scenarios; higher current rating adds margin but increases size/cost. | Select when higher output current headroom is needed and input voltage stays >2.3V. |
Compared with TPS73118DBVR and MCP1825-1802E/DB, MAX1976EZT180 uniquely combines 1.62V minimum input, 100mV dropout, ±0.5% accuracy, and integrated 70ms RESET - enabling simpler, smaller, and more robust power sequencing in space-constrained, battery-critical designs.
Availability
MAX1976EZT180 is available at Aetrix Electronics and suitable for notebook computers, cellular handsets, and digital cameras requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for MAX1976EZT180 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 management, sensing, and communications in demanding industrial, automotive, and portable applications.
The MAX1963/MAX1976 product line delivers low-input-voltage, high-accuracy LDOs with integrated RESET specifically for battery-powered portable electronics where small size, low quiescent current, and reliable power sequencing are essential.
FAQ
What is the output voltage tolerance of the MAX1976EZT180 over temperature and load?
The MAX1976EZT180 guarantees ±0.5% output voltage accuracy across -40°C to +85°C, 1mA to 300mA load, and 1.8V to 3.6V input. This specification is confirmed in the Electrical Characteristics table and validated over full operating conditions - not just at room temperature. The MAX1976EZT180 achieves this via factory-trimmed internal feedback, eliminating drift-related errors common in resistor-based LDOs.
Does the MAX1976EZT180 require external components for stable operation?
Yes, the MAX1976EZT180 requires two external capacitors: a 1µF ceramic capacitor between IN and GND, and a 4.7µF low-ESR ceramic capacitor between OUT and GND. These are mandatory for stability, transient response, and PSRR performance across temperature and load. The MAX1976EZT180 datasheet specifies ESR ≤30mΩ for COUT to ensure loop stability - using higher-ESR or tantalum capacitors may cause oscillation.
How does the RESET function behave during shutdown or input undervoltage?
During shutdown (SHDN = GND), the MAX1976EZT180 actively pulls RESET low. During input undervoltage (VIN < VUVLO ≈ 1.45V), RESET remains asserted low until VIN rises above lockout threshold and VOUT reaches regulation, then holds low for ≥70ms before releasing. This dual-trigger behavior ensures reliable reset assertion during both brownout and controlled shutdown events - a key feature of the MAX1976EZT180 design.
What is the thermal performance limit of the MAX1976EZT180 in the thin SOT23-6 package?
In the thin SOT23-6 package (Z6-1), the MAX1976EZT180 has a maximum power dissipation of 727mW at +70°C ambient, derating by 9.1mW/°C above that. At +85°C ambient, max dissipation drops to ~590mW. For a 1.8V output and 3.6V input, this limits continuous 300mA operation to VIN ≤ 2.8V - consistent with Figure 2 in the MAX1976EZT180 datasheet. Adequate PCB copper area on GND is required to meet these limits.
Can the MAX1976EZT180 be used with ceramic output capacitors below 4.7µF?
No - the MAX1976EZT180 is optimized for 4.7µF ceramic output capacitance with ≤30mΩ ESR. Using smaller values (e.g., 2.2µF or 1µF) risks instability, increased output ripple, and degraded load-transient response (overshoot >20mV). The MAX1976EZT180 datasheet explicitly states 4.7µF as the minimum recommended value for full-spec operation across temperature and load; deviation voids guaranteed performance.
MAX1976EZT180 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 3.6V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.2V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 140 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB (1kHz)
- Control Features:
- Enable, Reset
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
MAX1976EZT180 FAQ
1.How can I place an order for MAX1976EZT180 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1976EZT180 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 MAX1976EZT180 reliable?
The price and inventory of MAX1976EZT180 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1976EZT180 is usually 5 days.
3.What payment methods are accepted for MAX1976EZT180?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1976EZT180 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1976EZT180?
MAX1976EZT180 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1976EZT180 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 MAX1976EZT180?
For technical support, including MAX1976EZT180 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1976EZT180 requirements.
6.How does Aetrix verify that MAX1976EZT180 is sourced from the original manufacturer or authorized distributors?
All MAX1976EZT180 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 MAX1976EZT180 meets industry standards.
7.What is the process for return or replacement of MAX1976EZT180?
All MAX1976EZT180 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1976EZT180, 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 MAX1976EZT180 part is unused and in its original packaging.
Return procedure for MAX1976EZT180:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1976EZT180 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
