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Analog Devices Inc./Maxim Integrated MAX884CSA+
- Part No.:
- MAX884CSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX884CSA+.pdf
- Description:
- IC REG LIN POS ADJ 200MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:957
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Product details
Overview
MAX884CSA+ from Maxim Integrated is a 3.3V fixed-output, low-dropout linear regulator with p-channel MOSFET pass element, delivering up to 200mA output current at ≤+125°C junction temperature, featuring 11µA typical quiescent current, 320mV dropout at 3.3V/200mA, and shutdown mode drawing <1µA - deployed in battery-powered portable instruments and solar-powered devices.
For engineers reviewing the MAX884CSA+ datasheet, MAX884CSA+ pinout, MAX884CSA+ application, or MAX884CSA+ equivalent, key selection criteria include its 3.3V preset output, Dual Mode™ adjustable capability (1.25V–11V), reverse-current protection threshold of 6mV, thermal shutdown at +160°C, and compatibility with 2.2µF ceramic output capacitance for stability.
Technical Context
The MAX884CSA+ uses an internal 1.20V reference and error amplifier to regulate output via a p-channel MOSFET pass transistor - eliminating base-drive losses inherent in bipolar regulators and enabling ultra-low IQ across load range. Its Dual Mode™ comparator monitors the SET pin voltage (<65mV for fixed mode) to select between internal resistor feedback (3.3V) or external divider (adjustable).
Shutdown is controlled by an active-low OFF pin that disables all circuitry including reference and bias networks, reducing supply current to <1µA. Reverse-current protection activates when VIN falls 6mV below VOUT, switching substrate connectivity to block backflow while maintaining LBI/LBO functionality until OFF activation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±3% (–40°C to +85°C); enables direct replacement of standard 3.3V logic rails without external resistors. |
| Dropout Voltage | 320mV max at 200mA (3.3V output); allows operation with input as low as 3.62V under full load - critical for single-cell Li-ion or 4×AA systems. |
| Quiescent Current | 11µA typ / 15µA max (no load to 200mA); sustains >1-year battery life in always-on sensor nodes powered by 200mAh coin cells. |
| Shutdown Current | <1µA max (OFF = low); reduces standby power to negligible levels in intermittently active IoT endpoints. |
| Input Voltage Range | 2.7V to 11.5V; supports wide-input applications including multi-cell alkaline, LiFePO₄, and unregulated wall adapters. |
| Thermal Protection | Shuts down at +160°C with 10°C hysteresis; prevents permanent damage during sustained overload or poor PCB heatsinking. |
| Reverse-Current Threshold | 6mV (typ) VOUT–VIN differential; blocks backfeed from output capacitor into depleted input sources without external diodes. |
Pinout & Package
MAX884CSA+ is housed in an 8-pin SOIC package rated for 1.5W power dissipation (θJB = 53°C/W), with exposed GND pins (pins 3 and 6) serving dual electrical and thermal functions - requires soldering to large copper pads or internal ground planes for safe 200mA operation at +125°C junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - LBO | Open-drain low-battery indicator output | Asserts low when LBI < 1.20V; requires external pull-up; undefined during OFF mode - used for host MCU wake-up or LED alert. |
| 2 - SET | Dual Mode™ feedback selection node | Grounded to enable 3.3V fixed output; connected to external R1/R2 divider for 1.25V–11V adjustment - threshold is 65mV. |
| 3, 6 - GND | Power and thermal ground reference | Both pins must be soldered to PCB ground plane; primary heat path in SOIC package - insufficient connection causes thermal shutdown. |
| 4 - OUT | Regulated output terminal | Sources up to 200mA; requires ≥2.2µF ceramic capacitor at pin for stability; reverse-current protected when VIN < VOUT. |
| 5 - IN | Main input supply connection | Accepts 2.7V–11.5V; bypass with 0.1µF–10µF capacitor; reverse-current protection engages if voltage drops below VOUT by >6mV. |
| 7 - OFF | Active-low shutdown control | Pulling low disables entire IC (reference, comparator, pass transistor); draws <1µA - used for system-level power gating. |
| 8 - LBI | Low-battery comparator input | Monitors battery voltage via resistor divider; compares to 1.20V internal reference; 7mV hysteresis prevents chatter near trip point. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Mode™ operation | Single-pin (SET) selection between factory-trimmed 3.3V output or user-adjustable 1.25V–11V range - eliminates BOM variants for multiple voltage rails. |
| p-Channel MOSFET pass element | Zero base-drive current enables constant 11µA IQ from no-load to 200mA - avoids efficiency collapse seen in PNP-based LDOs under heavy load. |
| Reverse-current protection | Automatic substrate switching at 6mV VOUT–VIN differential - removes need for external blocking diode and associated 300mV forward drop. |
| Foldback current limiting | 430mA limit above 0.8V output; reduces to 170mA during short-circuit - protects IC and source during fault while allowing safe 1-minute short duration. |
| Thermal overload protection | +160°C shutdown with 10°C hysteresis - provides fail-safe operation without external thermal sensors or monitoring circuitry. |
Applications
| Portable Medical Sensors | Solar-Powered Environmental Monitors |
|---|---|
Use Scenario: Wearable ECG patch operating from CR2032 coin cell with 10-year shelf life requirement and periodic 30-second Bluetooth burst transmission. IC Role / Device Role / Timing Role: Primary 3.3V power rail regulator supplying ADC, microcontroller, and BLE radio - maintains regulation during battery voltage decay from 3.3V to 2.7V. Use Value: 11µA quiescent current extends usable battery life by 3.2× versus standard LDOs; 320mV dropout ensures uninterrupted operation down to 3.02V input. |
Use Scenario: Remote soil moisture sensor powered by 6V solar panel + supercapacitor buffer, logging data every 15 minutes in desert conditions (–20°C to +70°C ambient). IC Role / Device Role / Timing Role: Stable 3.3V supply for low-power MCU and analog front-end - rejects solar panel ripple and handles rapid VIN transients during cloud cover transitions. Use Value: 1.5W SOIC package sustains 200mA at +70°C ambient without derating; reverse-current protection prevents supercapacitor discharge into dark solar panel. |
| Industrial Handheld Scanners | Smart Building Occupancy Sensors |
Use Scenario: Barcode scanner using 2×AA alkaline batteries, requiring instant-on response after 72-hour sleep and tolerance to 10,000+ scan cycles per charge. IC Role / Device Role / Timing Role: Main system regulator enabling fast wake-from-shutdown (<200µs) and powering laser driver, imager, and decode engine. Use Value: OFF pin enables sub-1µA deep-sleep state; 200mA peak current supports simultaneous laser + imager activation without brownout. |
Use Scenario: Battery-operated PIR + ambient light sensor node mounted behind glass, transmitting occupancy status hourly via LoRaWAN - deployed for 5+ years without maintenance. IC Role / Device Role / Timing Role: Always-on 3.3V rail for ultra-low-power MCU and analog signal chain - integrates low-battery detection (LBI/LBO) for predictive battery replacement alerts. Use Value: Built-in 1.20V reference and comparator eliminate external components; 7mV hysteresis prevents false low-battery triggers from transient noise on long PCB traces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout, low-IQ linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76333DBVR | 300mA output, 150mV dropout at 3.3V/200mA, 17µA IQ, no reverse-current protection | Lacks integrated low-battery comparator and reverse-current blocking - requires external components for same functionality | Choose when higher output current and lower dropout are prioritized over battery longevity and protection integration |
| MCP1700-3302E/TO | 250mA output, 175mV dropout at 3.3V/250mA, 1.6µA IQ, no LBI/LBO or foldback limiting | No built-in battery monitoring or fault protection - suitable only for simple point-of-load regulation | Prefer for cost-sensitive, space-constrained designs where protection features are implemented elsewhere in system |
Compared with TPS76333DBVR and MCP1700-3302E/TO, the MAX884CSA+ uniquely combines 3.3V fixed output, sub-1µA shutdown, reverse-current blocking, and integrated low-battery detection in a single 8-pin SOIC - reducing total BOM count and PCB area while enhancing system-level reliability in battery-critical applications.
Availability
MAX884CSA+ is available at Aetrix Electronics and suitable for portable medical sensors, solar-powered environmental monitors, industrial handheld scanners, smart building occupancy sensors, and battery-backed real-time clocks requiring stable component supply with guaranteed long-term availability.
Supply support for MAX884CSA+ 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX882/MAX883/MAX884 family was designed specifically for ultra-low-power battery-operated systems requiring extended runtime, robust fault protection, and flexible output configuration - targeting pagers, cellular handsets, and portable instrumentation circa 2000–2010.
FAQ
What is the maximum continuous output current of the MAX884CSA+?
The MAX884CSA+ delivers up to 200mA continuously at junction temperatures ≤+125°C when used with adequate PCB copper area for thermal dissipation. At +125°C ambient with minimal heatsinking, output current must be reduced per Figure 5a in the datasheet to avoid exceeding the 1.5W package power limit - full 200mA is sustainable only with proper GND pad layout per Figure 4.
Does the MAX884CSA+ require an external capacitor on the SET pin for stability?
No, the MAX884CSA+ does not require an external capacitor on the SET pin. The SET pin is a high-impedance comparator input (leakage ±50nA) used solely to select between fixed and adjustable modes - stability depends exclusively on the 2.2µF minimum output capacitor at the OUT pin, as confirmed in the Applications Information section.
Can the MAX884CSA+ be used in adjustable-output mode, and what is the output voltage range?
Yes, the MAX884CSA+ supports adjustable-output mode via external resistors on the SET pin. With VSET = 1.20V, the output voltage ranges from 1.25V to 11.0V using the equation VOUT = VSET × (1 + R1/R2). R2 values up to 1.5MΩ are acceptable due to near-zero SET input bias current - enabling ultra-low-power divider networks.
What happens to the LBO pin during shutdown (OFF mode) of the MAX884CSA+?
During OFF mode (OFF pin pulled low), the LBO pin becomes undefined - it is neither actively driven nor high-impedance in a guaranteed state. The datasheet explicitly states "LBO is undefined during shutdown mode (MAX883/MAX884)", so external circuitry must not rely on LBO signaling while OFF is asserted. LBO remains functional only in normal or standby (MAX882) operation.
Is the MAX884CSA+ RoHS compliant and lead-free?
Yes, the MAX884CSA+ is RoHS compliant and lead-free. The "+" suffix in the part number denotes lead-free packaging per Maxim Integrated's standard product marking convention, and the device meets JEDEC J-STD-020 moisture sensitivity level 1 requirements for surface-mount assembly.
MAX884CSA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 11.5V
- Voltage - Output (Min/Fixed):
- 1.25V (3.3V)
- Voltage - Output (Max):
- 11V
- Voltage Dropout (Max):
- 0.64V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 15 µA
- Current - Supply (Max):
- 25 µA
- PSRR:
- -
- Control Features:
- Enable, Low Battery Detection
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX884CSA+ FAQ
1.How can I place an order for MAX884CSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX884CSA+ 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 MAX884CSA+ reliable?
The price and inventory of MAX884CSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX884CSA+ is usually 5 days.
3.What payment methods are accepted for MAX884CSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX884CSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX884CSA+?
MAX884CSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX884CSA+ 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 MAX884CSA+?
For technical support, including MAX884CSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX884CSA+ requirements.
6.How does Aetrix verify that MAX884CSA+ is sourced from the original manufacturer or authorized distributors?
All MAX884CSA+ 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 MAX884CSA+ meets industry standards.
7.What is the process for return or replacement of MAX884CSA+?
All MAX884CSA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX884CSA+, 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 MAX884CSA+ part is unused and in its original packaging.
Return procedure for MAX884CSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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