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Analog Devices Inc./Maxim Integrated MAX882CPA+
- Part No.:
- MAX882CPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX882CPA+.pdf
- Description:
- IC REG LIN POS ADJ 200MA 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:174
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Product details
Overview
MAX882CPA+ 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 junction temperatures up to +125°C, featuring 11µA typical quiescent current, 220mV dropout at 5V/200mA, and integrated low-battery detection for portable instrumentation and battery-powered systems.
For engineers reviewing the MAX882CPA+ datasheet, MAX882CPA+ pinout, MAX882CPA+ application, or MAX882CPA+ equivalent, key selection criteria include standby-mode operation (7µA typ), reverse-current protection threshold of 6mV, thermal shutdown at +160°C, and Dual Mode™ compatibility for adjustable output via external resistors.
Technical Context
The MAX882CPA+ employs a 1.20V internal reference and error amplifier driving a p-channel MOSFET pass transistor-eliminating base-current losses inherent in bipolar regulators and enabling stable ultra-low IQ across load and dropout conditions. Its dual-mode comparator selects between internal fixed 3.3V regulation (SET = GND) or adjustable 1.25V–11V output (SET > 65mV).
Standby mode (STBY = GND) disables output while preserving biasing circuitry-including the low-battery comparator-and maintains 7µA typical supply current. Reverse-current protection activates when VIN falls 6mV below VOUT, limiting backflow to <50µA at 3.3V output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±3% (0°C to +85°C), enabling direct replacement for 3.3V logic rails without external feedback. |
| Dropout Voltage | 220mV at 200mA (5V input), allowing operation down to VIN = 3.52V while sustaining full load. |
| Quiescent Current | 11µA typical (no load to 200mA), minimizing battery drain in always-on monitoring circuits. |
| Standby Current | 7µA typical (STBY = GND), retaining low-battery comparator functionality during sleep. |
| Input Voltage Range | 2.7V to 11.5V, supporting single-cell Li-ion, multi-cell alkaline, and solar-charged inputs. |
| Thermal Shutdown | +160°C activation with 10°C hysteresis, preventing permanent damage during sustained overload. |
| Reverse-Current Threshold | 6mV (typ) differential (VOUT – VIN), blocking backfeed from output to depleted input sources. |
Pinout & Package
MAX882CPA+ is housed in an 8-pin plastic DIP (PDIP) package rated for 0°C to +70°C operation, with GND pins (pins 3 and 6) serving as both electrical ground and thermal conduction paths-requiring direct soldering to large copper pads for safe 200mA operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LBO | Open-drain low-battery output | Asserts low when LBI < 1.20V; requires external pull-up; remains functional in STBY mode. |
| SET | Dual-mode feedback select | Grounded for 3.3V fixed output; >65mV enables adjustable mode using external resistor divider. |
| GND (pins 3,6) | Power and thermal ground | Must be soldered to PCB ground plane to dissipate heat; critical for 1.5W SO variants but still thermally relevant in PDIP. |
| OUT | Regulated output | Supplies up to 200mA; requires ≥2.2µF ceramic output capacitor for stability. |
| IN | Input supply | Accepts 2.7V–11.5V; bypass with 0.1µF capacitor recommended for transient immunity. |
| STBY | Active-low standby control | Pulls low to disable output while keeping reference, LBI/LBO, and bias active (7µA IQ). |
| LBI | Low-battery comparator input | Compares against 1.20V reference; tie to IN if unused; ±50nA input leakage enables high-R divider networks. |
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-no mode-change components required. |
| p-Channel MOSFET pass element | Eliminates PNP base-current loss, enabling constant 11µA IQ from no-load to 200mA and stable dropout behavior under saturation. |
| Reverse-current protection | Automatically disconnects IN from OUT when VIN drops 6mV below VOUT, preventing battery backfeed and protecting upstream sources. |
| Foldback current limiting | Reduces short-circuit current to 170mA below 0.8V output, enabling 1-minute safe short-to-ground at 3.3V without thermal damage. |
| Integrated low-battery comparator | 1.20V reference with 7mV hysteresis and open-drain LBO output-operational during STBY mode for continuous battery monitoring. |
Applications
| Portable Medical Sensors | Solar-Powered Data Loggers |
|---|---|
Use Scenario: Continuous ECG signal acquisition powered by coin-cell or rechargeable Li-ion battery. IC Role / Device Role / Timing Role: Primary 3.3V power rail regulator with standby-triggered data capture and low-battery alert signaling. Use Value: 7µA standby current extends battery life beyond 1 year; reverse-current protection prevents discharge through sensor analog front-end during battery swap. |
Use Scenario: Remote environmental monitoring node harvesting energy from small solar panel with supercapacitor buffer. IC Role / Device Role / Timing Role: Stable 3.3V supply for microcontroller and RF transceiver, regulating variable solar input (3.0–10V). Use Value: 2.7V minimum input enables startup at dawn; 220mV dropout ensures full 200mA output even as panel voltage sags under cloud cover. |
| Handheld Test Instruments | Industrial Handheld Scanners |
Use Scenario: Battery-operated multimeter with LCD display, precision ADC, and USB charging interface. IC Role / Device Role / Timing Role: Main system regulator supplying mixed-signal ICs; LBO drives LED low-battery indicator. Use Value: 11µA quiescent current minimizes self-discharge during storage; thermal shutdown prevents overheating during extended calibration routines. |
Use Scenario: Rugged barcode scanner using intermittent high-current laser and imager bursts. IC Role / Device Role / Timing Role: Load-switched 3.3V rail enabling rapid on/off cycling of optical subsystems. Use Value: STBY pin allows instantaneous wake-up from sub-10µA sleep state; foldback current limit protects against motor-induced supply collapse. |
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 |
|---|---|---|---|
| MAX884CSA+ | Same 3.3V fixed output, SO-8 package, -40°C to +85°C temp range, 1µA OFF-mode current (vs. MAX882CPA+'s 7µA STBY). | Requires full shutdown (not partial standby); lacks STBY pin-unsuitable where LBI/LBO must remain active during sleep. | Select MAX884CSA+ for wider temperature range and lower shutdown IQ; use MAX882CPA+ when standby-mode comparator retention is mandatory. |
| TPS76333DBVR | 3.3V fixed LDO, 150mA output, 80µA IQ, SOT-23-5 package, no standby mode or LBO/LBI functions. | No battery-monitoring features; limited thermal margin at 200mA; incompatible pinout and feature set. | Choose TPS76333DBVR only for space-constrained designs accepting reduced current capability and no battery supervision. |
Compared with MAX884CSA+, MAX882CPA+ provides unique standby-mode retention of low-battery monitoring at 7µA, while TPS76333DBVR trades supervision and current capability for footprint reduction-making MAX882CPA+ optimal for battery-aware portable instruments requiring guaranteed 200mA delivery and persistent voltage monitoring.
Availability
MAX882CPA+ is available at Aetrix Electronics and suitable for portable medical sensors, solar-powered data loggers, handheld test instruments, and industrial handheld scanners requiring stable component supply with long-term lifecycle support.
Supply support for MAX882CPA+ 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 communication in demanding environments.
The MAX882CPA+ belongs to Maxim's micropower LDO family, engineered specifically for battery longevity in portable instrumentation-emphasizing ultra-low IQ, reverse-current blocking, and integrated battery supervision without external components.
FAQ
What is the maximum output current of the MAX882CPA+ and under what conditions is it guaranteed?
The MAX882CPA+ delivers up to 200mA output current, tested and guaranteed over 0°C to +70°C ambient with proper PCB thermal design-specifically requiring connection of both GND pins to a large copper area. At higher ambient temperatures or with inadequate heatsinking, derating applies per the 727mW PDIP power dissipation limit and thermal resistance (θJA ≈ 110°C/W). The device can sustain 200mA only when (VIN – VOUT) remains within safe power-dissipation boundaries, as shown in Figure 5a of the datasheet.
Does the MAX882CPA+ support adjustable output voltage, and how is it configured?
Yes, the MAX882CPA+ supports adjustable output from 1.25V to 11V via its Dual Mode™ architecture. To enable adjustable mode, the SET pin must be biased above 65mV (typically using a resistor divider from OUT to GND), which disables the internal 3.3V feedback network. The output voltage is then calculated as VOUT = 1.20V × (1 + R1/R2), where R2 connects SET to GND and R1 connects OUT to SET. Input bias current at SET is ±50nA, permitting high-value resistors (up to 1.5MΩ for R2) without accuracy loss.
How does standby mode (STBY) differ from shutdown mode in the MAX882CPA+?
Standby mode (activated by pulling STBY low) disconnects the output from the input while keeping the internal reference, low-battery comparator (LBI/LBO), and bias circuitry fully operational-drawing only 7µA typical. This enables continuous battery monitoring during sleep. In contrast, the MAX882CPA+ does not implement an OFF pin; that function is exclusive to MAX883/MAX884. Therefore, MAX882CPA+ has no true shutdown mode-only STBY-and cannot achieve sub-1µA quiescent current like the MAX884CSA+.
What is the purpose and behavior of the LBO pin on the MAX882CPA+?
The LBO (Low-Battery Output) pin on the MAX882CPA+ is an open-drain output that pulls low when the voltage on the LBI pin falls below the internal 1.20V reference-indicating low battery condition. It features 7mV hysteresis for noise immunity and remains fully functional during STBY mode. An external pull-up resistor (to IN or OUT) is required. LBO sinks up to 1.2mA and outputs <250mV low when active. It is undefined only during OFF mode-which MAX882CPA+ does not support-so LBO is always valid in its operational states.
Can the MAX882CPA+ be used with input voltages below 2.7V, and what happens near the dropout region?
No-the absolute minimum input voltage for guaranteed operation is 2.7V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. Below this, regulation is not assured and device behavior is undefined. Near dropout (where VIN approaches VOUT + ∆VDO), the MAX882CPA+ maintains regulation with only 220mV headroom at 200mA, thanks to its p-channel MOSFET pass element. Unlike bipolar regulators, it exhibits no increase in quiescent current or instability in dropout, and continues delivering full load until VIN drops below the dropout threshold.
MAX882CPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX882CPA+ FAQ
1.How can I place an order for MAX882CPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX882CPA+ 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 MAX882CPA+ reliable?
The price and inventory of MAX882CPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX882CPA+ is usually 5 days.
3.What payment methods are accepted for MAX882CPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX882CPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX882CPA+?
MAX882CPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX882CPA+ 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 MAX882CPA+?
For technical support, including MAX882CPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX882CPA+ requirements.
6.How does Aetrix verify that MAX882CPA+ is sourced from the original manufacturer or authorized distributors?
All MAX882CPA+ 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 MAX882CPA+ meets industry standards.
7.What is the process for return or replacement of MAX882CPA+?
All MAX882CPA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX882CPA+, 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 MAX882CPA+ part is unused and in its original packaging.
Return procedure for MAX882CPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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