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Analog Devices Inc./Maxim Integrated DS1836A-10+
- Part No.:
- DS1836A-10+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
DS1836A-10+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,474
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Product details
Overview
DS1836A-10+ from Maxim Integrated is a 5V microprocessor supervisory circuit with integrated power-switching and non-maskable interrupt (NMI) functionality. It monitors VCC for out-of-tolerance conditions, asserts a push-pull reset output for 350ms after recovery, switches VOUT between VCC and VBAT at 4.25V–4.50V trip points, and triggers NMI when IN drops below 1.25V - used in PIC-based embedded systems requiring dual-supply failover and early power-fail warning.
For engineers reviewing the DS1836A-10+ datasheet, DS1836A-10+ pinout, DS1836A-10+ application, or DS1836A-10+ equivalent, key selection considerations include its 4.25V–4.50V VCC reset threshold, 350ms reset timeout, push-pull RST output, 1.25V IN trip point, and dual-supply switching behavior specific to DS1836A/B variants.
Technical Context
The DS1836A-10+ integrates three tightly coupled functions: precision voltage monitoring using an internal bandgap reference, automatic power-source arbitration between VCC and VBAT, and early-warning NMI generation via high-impedance IN input. Its reset assertion logic responds to both slow droop and fast transients on VCC, with hysteresis built into the 4.25V–4.50V trip window and guaranteed 350ms minimum reset hold time.
Unlike DS1836C/D variants, the DS1836A-10+ uses 5V-specific thresholds: it switches VOUT from VBAT to VCC when VCC rises above 3.9V (min), and back to VBAT when VCC falls below 3.8V (min); RST remains active for ≥350ms after VCC returns to tolerance, and the push-pull RST output maintains valid logic levels even as VCC decays to 0V when externally pulled down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 4.25V (min) to 4.50V (max) - defines precise 5V supply brown-out detection point |
| Reset Timeout | 350ms (typ) - ensures stable MCU initialization after power recovery |
| NMI Trip Voltage | 1.25V (typ) at IN pin - enables configurable early power-fail warning via external resistor divider |
| Power Switch Thresholds | VCC→VBAT switch at 3.80V (min); VBAT→VCC switch at 3.90V (min) - provides 100mV hysteresis for glitch-free source handover |
| Operating Temp | -40°C to +85°C - supports industrial-grade embedded deployment without derating |
| Supply Range | VCC and VBAT each support 1.2V to 5.5V - allows flexible battery backup integration |
| RST Output Type | CMOS push-pull - eliminates need for external pull-up and supports 0V VCC operation with GND pull-down |
Pinout & Package
DS1836A-10+ is available in 8-pin SO (150mil) and 8-pin DIP (300mil) packages. Both share identical pin mapping and function assignment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Main power supply input | Primary 5V system rail; monitored for reset generation and used as VOUT source above 3.9V |
| VBAT | Battery backup supply input | Secondary supply; powers VOUT when VCC falls below 3.8V; draws <0.1μA leakage in off state |
| NC | No-connect terminal | Internally unconnected; must be left floating or tied to GND per layout best practice |
| VOUT | Switched power output | Delivers regulated power from either VCC or VBAT depending on real-time voltage comparison |
| GND | Ground reference | Common return path for all analog and digital circuitry; required for accurate voltage sensing |
| IN | High-impedance sense input | Monitors external voltage divider; triggers NMI when voltage drops below 1.25V (±0.1V) |
| NMI | Open-drain non-maskable interrupt | Active-low signal requiring external 10kΩ pull-up; alerts MCU of impending power loss before RST asserts |
| RST | Push-pull reset output | Drives active-low reset to microcontroller; maintains valid logic state down to 0V VCC with optional 100kΩ pull-down |
Key Features
| Feature | Design Value |
|---|---|
| Integrated power-switching logic | Automatically selects highest-voltage source (VCC or VBAT) for VOUT, eliminating discrete MOSFET + control circuitry |
| Temperature-compensated voltage reference | Enables stable 1.25V IN trip point and 4.25V–4.50V VCC threshold across -40°C to +85°C |
| Push-pull RST with 0V VCC support | Allows safe MCU shutdown sequence even during complete main supply collapse when paired with GND pull-down |
| Configurable NMI sense point | High-impedance IN pin accepts user-defined voltage divider, enabling early detection at upstream power nodes |
| Dual-supply brown-out immunity | Asserts reset if either VCC or VBAT falls outside 1.2V–5.5V operating range, ensuring robustness during battery switchover |
Applications
| Industrial PLC Controller | PIC-Based Data Logger |
|---|---|
Use Scenario: Maintains real-time logging during AC mains interruption by seamlessly switching to backup battery while signaling imminent power loss. IC Role / Device Role / Timing Role: Supervisory IC providing coordinated reset timing, power-source arbitration, and early NMI warning. Use Value: Enables >100ms of deterministic shutdown time before VCC collapse, preserving last valid sensor readings and flash write integrity. | Use Scenario: Powers and monitors a PIC16F877A-based environmental sensor node running from 5V wall adapter with Li-ion backup. IC Role / Device Role / Timing Role: Dual-role device: voltage supervisor for reliable boot/reset and power switch for uninterrupted operation. Use Value: Eliminates need for external power-path MOSFET and discrete reset generator, reducing BOM count by 4 components. |
| Medical Infusion Pump | Point-of-Sale Terminal |
Use Scenario: Ensures fail-safe motor shutdown and EEPROM save upon detection of 5V rail sag during battery transition. IC Role / Device Role / Timing Role: Safety-critical supervisory element enforcing deterministic reset timing and power continuity. Use Value: Guarantees ≥350ms reset pulse width independent of VCC slew rate, meeting IEC 62304 Class C timing requirements. | Use Scenario: Provides clean power sequencing and brown-out protection for ARM Cortex-M0+ payment processor during brief grid dips. IC Role / Device Role / Timing Role: System-level power manager handling VCC monitoring, backup switchover, and NMI-triggered state save. Use Value: Delivers 350ms reset hold time and 1μs NMI response - faster than software polling, preventing transaction corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX692AESA+ | Single 4.65V reset threshold; no power-switching or NMI functionality; SO-8 package | Only provides reset supervision - requires external circuitry for battery switchover and early warning | Select when only basic reset generation is needed and board space permits added discretes |
| TPS3808G33DBVR | 3.3V fixed reset threshold; no VOUT switching or NMI; open-drain RST; SOT-23-6 package | Lacks dual-supply management and early-interrupt capability; suited for low-pin-count 3.3V-only systems | Choose for cost-sensitive 3.3V applications where battery backup and NMI are not required |
Compared with MAX692AESA+ and TPS3808G33DBVR, the DS1836A-10+ uniquely integrates reset generation, dual-supply power switching, and NMI in one 8-pin SO package - delivering system-level power resilience without design compromises or component count increase.
Availability
DS1836A-10+ is available at Aetrix Electronics and suitable for industrial PLC controllers, PIC-based data loggers, medical infusion pumps, and point-of-sale terminals requiring stable component supply and long-term lifecycle support.
Supply support for DS1836A-10+ 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, mixed-signal, and power management ICs for industrial, computing, and communications applications.
The DS1836A-10+ belongs to Maxim's MicroManager family of supervisory circuits, engineered specifically for microprocessor-based systems needing coordinated reset timing, battery backup arbitration, and early power-fail warning in compact form factors.
FAQ
What is the exact VCC reset threshold range for DS1836A-10+?
The DS1836A-10+ has a guaranteed VCC reset threshold range of 4.25V (minimum) to 4.50V (maximum) at 25°C, with temperature-compensated stability across -40°C to +85°C. This 5V-specific threshold is distinct from DS1836C/D variants and ensures precise brown-out detection for 5V microprocessor rails. The DS1836A-10+ datasheet specifies this value under "RST VCC Trip Point DS1836A(or B)-10" in the DC Electrical Characteristics table.
Does DS1836A-10+ support operation with 3.3V VCC?
No, DS1836A-10+ is a 5V-specific variant and does not support reliable 3.3V operation. Its VCC reset threshold (4.25V–4.50V) and power-switch thresholds (3.80V–4.0V) are designed exclusively for 5V systems. For 3.3V applications, DS1836C-10+ or DS1836D-10+ - with 2.80V–2.97V reset thresholds - must be used instead. The DS1836A-10+ may fail to assert reset or switch correctly if VCC remains near 3.3V.
How does the NMI function work on DS1836A-10+?
The NMI output on DS1836A-10+ is an open-drain signal triggered when the voltage at the IN pin falls below 1.25V (typ). It uses an internal bandgap reference for accuracy and responds within 1μs (tIPD). A user-configurable resistor divider sets the monitored voltage level - for example, a 4.5V trip point requires R1 = 260kΩ and R2 = 100kΩ. The DS1836A-10+ requires an external 10kΩ pull-up on NMI for proper logic-high assertion.
Can DS1836A-10+ maintain valid RST output when VCC drops to 0V?
Yes, DS1836A-10+ supports 0V VCC RST operation using its push-pull output structure. When a 100kΩ resistor is connected from RST to GND, the output remains a valid logic-low even after VCC collapses to 0V - enabling controlled MCU shutdown. This feature is exclusive to DS1836A/C variants and is documented in Figure 5 ("RST VALID TO 0V VCC ON THE DS1836A OR DS1836C") of the DS1836A-10+ datasheet.
What package options are available for DS1836A-10+?
DS1836A-10+ is offered in two industry-standard packages: 8-pin SO (150mil width) and 8-pin DIP (300mil width), both with identical pinout and electrical specifications. The SO package supports surface-mount assembly and space-constrained designs, while the DIP variant enables through-hole prototyping and legacy board compatibility. No other package types (e.g., TSSOP, MSOP) are available for DS1836A-10+.
DS1836A-10+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- MicroManager
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.37V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 200ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
DS1836A-10+ FAQ
1.How can I place an order for DS1836A-10+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1836A-10+ 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 DS1836A-10+ reliable?
The price and inventory of DS1836A-10+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1836A-10+ is usually 5 days.
3.What payment methods are accepted for DS1836A-10+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1836A-10+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1836A-10+?
DS1836A-10+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1836A-10+ 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 DS1836A-10+?
For technical support, including DS1836A-10+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1836A-10+ requirements.
6.How does Aetrix verify that DS1836A-10+ is sourced from the original manufacturer or authorized distributors?
All DS1836A-10+ 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 DS1836A-10+ meets industry standards.
7.What is the process for return or replacement of DS1836A-10+?
All DS1836A-10+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1836A-10+, 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 DS1836A-10+ part is unused and in its original packaging.
Return procedure for DS1836A-10+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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