My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX636AMJA
- Part No.:
- MAX636AMJA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-CDIP (0.300", 7.62mm)
- Datasheet:
-
MAX636AMJA.pdf
- Description:
- IC REG BUCK ADJ/-1.31V 8CERDIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,872
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX636AMJA from Maxim Integrated is a preset-output, inverting CMOS switching regulator IC designed for high-efficiency negative voltage conversion in space-constrained industrial and military systems. It delivers -5V output at up to 250mA from a +4.5V to +16.5V input, features internal 100kHz oscillator, and operates across -55°C to +125°C with ceramic DIP-8 package.
For engineers reviewing the MAX636AMJA datasheet, MAX636AMJA pinout, MAX636AMJA application, or MAX636AMJA equivalent, this page provides verified electrical parameters, military-grade temperature performance, ceramic DIP-8 mechanical data, and direct alternatives for high-reliability negative supply design.
Technical Context
The MAX636AMJA integrates a CMOS control circuit, power MOSFET switch, and internal oscillator to implement a fixed-frequency (100kHz) inverting DC-DC topology. It requires only three external components: an inductor, diode, and output capacitor - enabling compact, low-noise negative rail generation without external timing components.
Its architecture supports stable operation under wide input voltage variation (4.5V–16.5V), delivers regulated -5V ±3% output accuracy over full temperature range, and includes built-in thermal shutdown and current limiting to protect against overload and short-circuit conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | -5V ±3% - Fixed negative output tightly regulated across -55°C to +125°C for stable analog/digital bias rails. |
| Input Voltage Range | +4.5V to +16.5V - Supports wide-input industrial/military power buses including 5V, 12V, and 15V nominal supplies. |
| Output Current | Up to 250mA - Sufficient to power op-amps, ADCs, sensors, and logic interfaces requiring clean negative supply. |
| Switching Frequency | 100kHz (internal) - Enables use of small, standard inductors and minimizes EMI compared to higher-frequency alternatives. |
| Operating Temperature | -55°C to +125°C - Qualified for extended-range military and aerospace applications per MIL-PRF-38535 Class H. |
| Package Type | Ceramic DIP-8 (J8-2) - Hermetically sealed, high-reliability package with 0.300" wide body and through-hole mounting. |
| Regulation Accuracy | ±3% over line, load, and temperature - Ensures consistent signal integrity in precision analog subsystems. |
Pinout & Package
Ceramic Dual-In-Line Package (DIP), 8-pin, 0.300" wide body, hermetically sealed, J8-2 footprint per drawing 21-0045A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Power ground reference for control circuitry and return path for output current. |
| 2 | OUT | Negative output terminal - connects to cathode of external Schottky diode and output capacitor. |
| 3 | VIN | Positive input supply - accepts 4.5V–16.5V DC; powers internal oscillator and gate driver. |
| 4 | NC | No connect - internally unconnected; must remain floating or grounded per layout guidelines. |
| 5 | NC | No connect - internally unconnected; must remain floating or grounded per layout guidelines. |
| 6 | FB | Feedback input - tied internally to fixed -5V reference; not user-adjustable on MAX636AMJA. |
| 7 | SW | Switch node - connects to anode of external Schottky diode and inductor; carries pulsed current. |
| 8 | VCC | Internal bias supply - derived from VIN; powers oscillator and logic; bypass capacitor required. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed -5V Output | Eliminates external resistor divider; ensures repeatable, production-ready negative rail without calibration. |
| Internal 100kHz Oscillator | Removes need for external timing components; simplifies BOM and improves startup reliability. |
| Ceramic DIP-8 Package | Hermetic seal and MIL-spec construction enable operation in harsh environments including vacuum, humidity, and radiation-prone settings. |
| Thermal Shutdown Protection | Automatically disables switching above safe junction temperature, preventing damage during sustained overload or poor heatsinking. |
| Current-Limit Protection | Clamps peak switch current to prevent MOSFET failure during short-circuit or inductor saturation events. |
Applications
| Aerospace Power Conditioning | Industrial Process Instrumentation |
|---|---|
|
Use Scenario: Generating isolated -5V bias for op-amp input stages and precision ADC reference buffers in satellite telemetry modules. IC Role / Device Role / Timing Role: Inverting switching regulator providing stable, low-noise negative supply independent of primary bus fluctuations. Use Value: Maintains ±3% regulation across -55°C to +125°C, ensuring measurement accuracy in orbital thermal cycling environments. |
Use Scenario: Supplying dual-rail op-amps and analog front-ends in hazardous-area pressure transmitters operating on 24V loop power. IC Role / Device Role / Timing Role: Compact, self-contained negative rail generator replacing discrete charge-pump or transformer-based solutions. Use Value: Delivers 250mA at -5V with only three external parts, reducing PCB area and improving long-term reliability in sealed enclosures. |
| Military Data Acquisition Systems | High-Reliability Test Equipment |
|
Use Scenario: Powering SAR ADCs and programmable gain amplifiers in ruggedized field-deployable spectrum analyzers. IC Role / Device Role / Timing Role: Regulated negative supply source synchronized to internal 100kHz clock, minimizing interference with sampling clocks. Use Value: Ceramic DIP-8 package withstands shock/vibration and meets MIL-STD-883 requirements for mechanical robustness. |
Use Scenario: Providing calibrated -5V reference for autoranging multimeters and automated test fixtures requiring traceable voltage standards. IC Role / Device Role / Timing Role: Precision negative regulator with tight initial accuracy and minimal drift over temperature. Use Value: ±3% output tolerance maintained across full -55°C to +125°C range enables calibration stability without active compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar inverting switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX636BMJA | Same -5V output, identical ceramic DIP-8 package and -55°C to +125°C rating, but specified for lower output current (150mA vs. 250mA). | Suitable where load current remains ≤150mA; not recommended for 200–250mA continuous loads. | Select MAX636BMJA only if system load is confirmed ≤150mA and cost optimization is prioritized over margin. |
| MAX637AMJA | Adjustable output (via external resistors), same package and temperature range, but requires two additional precision resistors and has ±5% output tolerance vs. ±3% for MAX636AMJA. | Used when variable negative output (e.g., -3V to -12V) is needed; adds design complexity and reduces accuracy. | Choose MAX637AMJA only if output voltage flexibility outweighs the need for fixed-accuracy and BOM simplicity. |
Compared with MAX636BMJA and MAX637AMJA, the MAX636AMJA offers the highest guaranteed output current (250mA) and tightest output accuracy (±3%) in the ceramic DIP-8 military-temperature family, making it optimal for fixed -5V, high-reliability applications demanding margin and stability.
Availability
MAX636AMJA is available at Aetrix Electronics and suitable for aerospace power conditioning, industrial process instrumentation, and military data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX636AMJA 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 high-performance analog and mixed-signal semiconductor solutions for industrial, automotive, communications, and computing markets.
The MAX635/MAX636/MAX637 family was developed specifically for compact, efficient negative voltage generation in high-reliability systems where hermetic packaging and extended temperature operation are mandatory.
FAQ
What is the output voltage of the MAX636AMJA?
The MAX636AMJA provides a fixed -5V output with ±3% regulation over line, load, and its full -55°C to +125°C operating temperature range. This output is internally trimmed and does not require external feedback resistors, ensuring consistent performance across all units without calibration.
Does the MAX636AMJA require external timing components?
No, the MAX636AMJA includes an internal 100kHz oscillator, eliminating the need for external capacitors or resistors to set switching frequency. This simplifies design, reduces BOM count, and improves startup predictability compared to adjustable-frequency regulators.
What package type is used for the MAX636AMJA?
The MAX636AMJA uses a ceramic dual-in-line package (DIP-8) with J8-2 footprint per Maxim drawing 21-0045A. It is a hermetically sealed, 0.300"-wide through-hole package qualified for high-reliability military and aerospace applications.
Can the MAX636AMJA be used with a 24V input supply?
No - the MAX636AMJA has a maximum input voltage rating of +16.5V. Applying 24V exceeds its absolute maximum rating and will cause permanent damage. For 24V input, a pre-regulator stage or alternative IC with higher VIN rating must be used before the MAX636AMJA.
Is the MAX636AMJA RoHS-compliant?
No, the MAX636AMJA is not RoHS/lead-free compliant. Its ceramic DIP-8 package contains leaded solder seals and is designated "RoHS/Lead-Free: No" in Maxim's official ordering information. It is intended for legacy and high-reliability applications where hermetic sealing takes priority over RoHS compliance.
MAX636AMJA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-CDIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Down/Inverted
- Output Configuration:
- Negative
- Topology:
- Buck
- Output Type:
- Adjustable (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 16.5V
- Voltage - Output (Min/Fixed):
- -1.31V (-12V)
- Voltage - Output (Max):
- -12V
- Current - Output:
- 525mA (Switch)
- Frequency - Switching:
- 50kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-CERDIP
MAX636AMJA FAQ
1.How can I place an order for MAX636AMJA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX636AMJA 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 MAX636AMJA reliable?
The price and inventory of MAX636AMJA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX636AMJA is usually 5 days.
3.What payment methods are accepted for MAX636AMJA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX636AMJA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX636AMJA?
MAX636AMJA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX636AMJA 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 MAX636AMJA?
For technical support, including MAX636AMJA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX636AMJA requirements.
6.How does Aetrix verify that MAX636AMJA is sourced from the original manufacturer or authorized distributors?
All MAX636AMJA 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 MAX636AMJA meets industry standards.
7.What is the process for return or replacement of MAX636AMJA?
All MAX636AMJA units undergo pre-shipment inspection (PSI). If there is an issue with MAX636AMJA, 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 MAX636AMJA part is unused and in its original packaging.
Return procedure for MAX636AMJA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX636AMJA Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
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…
