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Analog Devices Inc./Maxim Integrated DS1836CS-10+
- Part No.:
- DS1836CS-10+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DS1836CS-10+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,789
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Product details
Overview
DS1836CS-10+ from Maxim Integrated is a 3.3V microprocessor supervisory circuit with power-switching, non-maskable interrupt (NMI), and precision reset generation. It monitors VCC for out-of-tolerance conditions, switches VOUT between VCC and VBAT at 2.6V/2.8V thresholds, asserts RST for 350ms after recovery, and triggers NMI when IN drops below 1.25V - used in battery-backed PIC-based embedded systems requiring dual-supply failover.
For engineers reviewing the DS1836CS-10+ datasheet, DS1836CS-10+ pinout, DS1836CS-10+ application, or DS1836CS-10+ equivalent, key selection criteria include its 2.88V typical VCC trip point, push-pull RST output, 1.25V IN threshold, -40°C to +85°C operation, and compatibility with 3.3V systems requiring early power-fail warning and seamless backup supply handover.
Technical Context
The DS1836CS-10+ integrates three tightly coupled functions: a precision voltage comparator with 1.25V internal reference for IN-triggered NMI, a dual-threshold power switch (VCC-to-VBAT switchover at 2.6V, VBAT-to-VCC restoration at 2.8V), and a reset generator with 350ms timeout and hysteresis. Its RST output uses a CMOS push-pull structure capable of valid logic down to 0V VCC, unlike open-drain alternatives.
It operates across 1.2V–5.5V supply range but is specifically configured as a 3.3V variant (suffix "S") with VCCTP = 2.88V (typ), VCCFTP = 2.65V (typ), and VCCRTP = 2.75V (typ). The IN pin supports high-impedance sensing via external resistor divider, enabling early detection of upstream power degradation before VCC collapse.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 2.88V typical; ensures reset assertion before 3.3V rail falls below safe microcontroller operating margin |
| VCC-to-VBAT Switch Threshold | 2.65V typical; initiates battery backup before main supply becomes unstable |
| VBAT-to-VCC Restore Threshold | 2.75V typical; prevents oscillation during VCC recovery with 0.1V hysteresis |
| IN Trip Voltage | 1.25V ±0.1V; enables configurable early-warning sensing of higher-voltage rails via resistor divider |
| RST Active Duration | 350ms typical after VCC recovery; guarantees sufficient time for system stabilization before release |
| Operating Temperature | -40°C to +85°C; qualified for industrial-grade embedded environments without derating |
| Supply Current | 30–50μA at 3.6V; ultra-low quiescent draw suitable for long-life battery-backed operation |
Pinout & Package
DS1836CS-10+ is available in 8-pin SOIC (150-mil width) package, RoHS-compliant and lead-free. Pinout is identical to DS1836C/D family variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Main power supply input | Monitored 3.3V rail; trip point set to 2.88V (typ) for reset and switching control |
| VBAT | Battery backup supply input | Provides uninterrupted VOUT during VCC brownout; leakage <0.1μA in off state |
| NC | No-connect terminal | Not internally bonded; must be left unconnected per design |
| VOUT | Switched power output | Delivers power from VCC or VBAT depending on real-time threshold comparison |
| GND | Analog/digital ground reference | Common return for all internal comparators, reference, and outputs |
| IN | User-configurable sense input | High-impedance comparator input referenced to 1.25V; accepts divided voltage from higher rails |
| NMI | Open-drain non-maskable interrupt | Asserts low on IN <1.25V; requires external 10kΩ pull-up for proper logic level |
| RST | CMOS push-pull reset output | Active-low reset with 350ms timeout; maintains valid state even if VCC drops to 0V |
Key Features
| Feature | Design Value |
|---|---|
| Programmable NMI sensing | 1.25V internal reference enables early power-fail detection from any DC rail via external resistor divider |
| Dual-threshold power switching | 2.65V fall / 2.75V rise hysteresis prevents chattering during marginal VCC transitions |
| 0V-valid RST output | Push-pull structure sustains defined logic state even when VCC = 0V, enabling controlled shutdown |
| Low-power supervision | 30–50μA ICC at 3.6V allows years of operation on coin-cell backup without significant drain |
| Industrial temperature range | -40°C to +85°C operation ensures reliability in uncontrolled ambient environments |
Applications
| Battery-Backed Microcontroller Systems | Industrial PLC I/O Modules |
|---|---|
Use Scenario: PIC-based data logger powered by 3.3V main supply and CR2032 coin cell, requiring graceful shutdown on AC loss. IC Role / Device Role / Timing Role: DS1836CS-10+ monitors VCC, triggers NMI at first sign of droop, then asserts RST after full collapse to halt CPU and save state. Use Value: 1.25V IN threshold enables detection ~100ms before VCC reaches 2.65V switch point, maximizing shutdown time. | Use Scenario: Remote I/O node in factory automation with 24V field power converted to 3.3V, subject to transient dips. IC Role / Device Role / Timing Role: DS1836CS-10+ acts as primary supervisor: asserting RST on sustained undervoltage while maintaining VOUT from battery during brief interruptions. Use Value: 350ms RST timeout exceeds typical 100–200ms hold-up time of 3.3V LDOs, preventing spurious resets. |
| Medical Portable Diagnostic Devices | Smart Meter Battery Management |
Use Scenario: Handheld ultrasound unit with Li-ion battery and 3.3V system rail, needing deterministic power-loss response for image buffer preservation. IC Role / Device Role / Timing Role: DS1836CS-10+ provides dual-level alerting: NMI initiates buffer flush, RST halts processor only after irreversible failure. Use Value: Separation between NMI (1.25V) and RST (2.88V) trip points creates >100mV guardband for staged response. | Use Scenario: Electricity meter with supercapacitor backup, where VCC sags slowly during grid outage and must sustain real-time clock and metrology ASIC. IC Role / Device Role / Timing Role: DS1836CS-10+ switches VOUT to VBAT at 2.65V, sustaining regulated 3.3V output while isolating failing main supply. Use Value: VOUT regulation (VCC−0.3V or VBAT−0.3V) ensures downstream LDOs remain in dropout-free operation during switchover. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6361LTT+T | Single 3.3V reset IC with 2.93V trip, no power switching or NMI | Lacks battery switchover and early-warning interrupt; suited only for basic reset-only use cases | Select when only reset supervision is needed and backup power path is handled externally |
| TPS3808G33DBVR | 3.3V supervisor with 2.93V threshold, push-pull RST, but no NMI or VOUT switching | Missing dual-supply management and programmable sense input; requires separate battery controller | Choose for cost-sensitive designs where NMI and power switching are unnecessary |
Compared with MAX6361LTT+T and TPS3808G33DBVR, DS1836CS-10+ uniquely integrates reset, power switching, and NMI in one 8-pin SOIC - eliminating discrete diodes, MOSFETs, and comparators while enabling staged power-loss response critical for data integrity in battery-backed systems.
Availability
DS1836CS-10+ is available at Aetrix Electronics and suitable for battery-backed microcontrollers, industrial I/O modules, portable medical diagnostics, smart metering, and PLC edge nodes requiring stable component supply with guaranteed long-term continuity.
Supply support for DS1836CS-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 DS1836CS-10+ belongs to the MicroManager™ family of supervisory circuits engineered for systems requiring coordinated power monitoring, failover, and deterministic reset - especially in PIC-based and battery-critical embedded platforms.
FAQ
What is the exact VCC reset threshold for DS1836CS-10+?
The DS1836CS-10+ has a nominal VCC reset threshold of 2.88V (typical), with min/max values of 2.80V and 2.97V over temperature. This value is factory-trimmed and specified in the DS1836C/D data sheet under "RST VCC Trip Point DS1836C(or D)-10". It is distinct from the A/B variants (4.37V typ) and optimized for 3.3V systems.
Does DS1836CS-10+ support operation with VCC below 3.3V?
Yes - DS1836CS-10+ operates across 1.2V to 5.5V per its Recommended DC Operating Conditions. Its internal bandgap reference and comparator remain functional down to 1.2V VCC, and the RST output retains valid logic states even when VCC drops to 0V due to its push-pull architecture.
How does the NMI function work in DS1836CS-10+?
The NMI output of DS1836CS-10+ is an open-drain signal asserted low when the voltage at the IN pin falls below 1.25V (±0.1V). It uses an internal precision reference and high-impedance input, allowing users to monitor any DC rail via a resistor divider. A 10kΩ external pull-up is required for proper logic-high state.
Can DS1836CS-10+ switch between two independent power sources?
Yes - DS1836CS-10+ performs automatic power-source selection: it supplies VOUT from VBAT until VCC rises above 2.8V (typ), then switches to VCC; if VCC falls below 2.6V (typ), it reverts to VBAT. This bidirectional switchover is fully autonomous and requires no external control signals.
Is DS1836CS-10+ pin-compatible with other DS1836 variants?
Yes - DS1836CS-10+ shares identical 8-pin SOIC pinout and terminal functions with all DS1836A/B/C/D variants, including DS1836C-10+. However, trip voltages differ: C/D versions target 3.3V systems (2.88V reset), while A/B versions target 5V systems (4.37V reset); mixing variants without adjusting external circuitry may cause incorrect behavior.
DS1836CS-10+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- MicroManager
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.88V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 200ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
DS1836CS-10+ FAQ
1.How can I place an order for DS1836CS-10+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1836CS-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 DS1836CS-10+ reliable?
The price and inventory of DS1836CS-10+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1836CS-10+ is usually 5 days.
3.What payment methods are accepted for DS1836CS-10+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1836CS-10+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1836CS-10+?
DS1836CS-10+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1836CS-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 DS1836CS-10+?
For technical support, including DS1836CS-10+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1836CS-10+ requirements.
6.How does Aetrix verify that DS1836CS-10+ is sourced from the original manufacturer or authorized distributors?
All DS1836CS-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 DS1836CS-10+ meets industry standards.
7.What is the process for return or replacement of DS1836CS-10+?
All DS1836CS-10+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1836CS-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 DS1836CS-10+ part is unused and in its original packaging.
Return procedure for DS1836CS-10+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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