My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6776LTC+
- Part No.:
- MAX6776LTC+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Battery Management
- Package:
- 6-WFDFN
- Datasheet:
-
MAX6776LTC+.pdf
- Description:
- IC BATT MON MULTI-CHEM 1CL 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,166
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6776LTC+ from Maxim Integrated is a single-channel, open-drain, low-power battery monitor IC with factory-set 10% hysteresis, designed to detect falling battery voltage in portable systems. It operates from 1.2V to 5.5V, draws only 3.2–6µA supply current, and guarantees valid output logic down to VBATT = 1V. It is used in Li+ cell monitoring and alkaline/NiMH multicell power supplies where noise immunity and low quiescent current are critical.
For engineers reviewing the MAX6776LTC+ datasheet, MAX6776LTC+ pinout, MAX6776LTC+ application, or MAX6776LTC+ equivalent, key selection criteria include its 10% fixed hysteresis, 1.0998V falling threshold, SC70-5 package compatibility, and open-drain LBO output requiring external pull-up for microprocessor interface.
Technical Context
The MAX6776LTC+ implements a precision bandgap reference and comparator architecture with internal hysteresis control, enabling stable low-battery detection without external components. Its input leakage current is limited to ±5nA, allowing high-value resistive dividers for minimal battery drain.
It features guaranteed propagation delay of 9µs and startup time of 3ms after VBATT rises above 1.6V. The device asserts active-low LBO when the LBI voltage falls below 1.0998V (VLBIF) and deasserts only when it exceeds 1.222V (VLBIR), delivering deterministic hysteresis behavior across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage Range | 1.2V to 5.5V - supports full operation down to single-cell NiMH/alkaline cutoff and up to Li+ fully charged voltage |
| Falling Threshold (VLBIF) | 1.0998V - precise trip point for early low-battery warning in 3.0–3.7V nominal systems |
| Rising Threshold (VLBIR) | 1.222V - ensures clean output recovery after load removal or transient dip |
| Hysteresis | 10% - eliminates chatter due to battery voltage recovery or input noise without external RC |
| Supply Current (IQ) | 3.2–6µA at TA = –40°C to +85°C - extends battery life in always-on portable devices |
| Propagation Delay | 9µs - enables fast response to rapid battery sag during pulse loads |
| Output Type | Open-drain LBO - allows flexible pull-up to any logic rail ≤6V, independent of VBATT |
Pinout & Package
The MAX6776LTC+ is packaged in a RoHS-compliant 5-pin SC70 (XK) package measuring 2.0mm × 2.1mm × 0.95mm, optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Primary ground connection; all internal circuitry referenced to this node |
| 2 LBO | Active-low open-drain output | Asserts low when battery voltage drops below VLBIF; requires external pull-up resistor |
| 3 LBI | Low-battery input | High-impedance analog input connected to resistive divider; ±5nA leakage minimizes divider error |
| 4 BATT | Battery supply input | Power source for internal circuitry; operates over full 1.2–5.5V range |
| 5 N.C. | No connection | Not internally bonded; must be left unconnected on PCB |
Key Features
| Feature | Design Value |
|---|---|
| 1.0%-accurate threshold over temperature | Guaranteed VLBIF tolerance of ±1% from –40°C to +85°C enables reliable end-of-life detection without calibration |
| Fixed 10% hysteresis | Eliminates need for external hysteresis components while providing robust immunity to battery recovery transients |
| 3.2–6µA supply current | Reduces average system current by >90% versus discrete comparator solutions, extending runtime in coin-cell applications |
| Valid output down to VBATT = 1V | Ensures functional reset signaling even under deep discharge, critical for data retention in memory-backed systems |
| Immunity to short battery transients | Withstands <100µs transients up to 100mV overdrive without false triggering, per typical operating characteristics |
Applications
| Cell Phones | Portable Medical Devices |
|---|---|
Use Scenario: Real-time monitoring of single Li+ cell voltage during call transmission and standby. IC Role / Device Role / Timing Role: Low-battery detector generating interrupt signal to baseband processor when cell voltage falls below 3.2V. Use Value: Prevents unexpected shutdown by triggering graceful power-down before voltage collapse, preserving call continuity and user data. | Use Scenario: Monitoring dual alkaline cells powering an insulin pump controller with safety-critical runtime estimation. IC Role / Device Role / Timing Role: Battery supervisor asserting LBO to MCU when combined cell voltage drops below 2.4V. Use Value: Enables timely alert generation and controlled motor shutdown before therapeutic delivery interruption occurs. |
| MP3 Players | Electronic Toys |
Use Scenario: Detecting end-of-charge in rechargeable NiMH packs used in portable audio players. IC Role / Device Role / Timing Role: Single-threshold battery monitor driving LED indicator and disabling playback amplifier. Use Value: Delivers consistent low-battery indication across charge cycles without drift, improving user experience and battery utilization. | Use Scenario: Power management in battery-powered educational toys with intermittent high-current motor activation. IC Role / Device Role / Timing Role: Hysteresis-enabled voltage supervisor preventing repeated on/off cycling during motor-induced voltage sag. Use Value: Eliminates erratic behavior caused by transient dips, ensuring stable operation and predictable battery life display. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6776XKC+T | Same electrical specs and pinout; differs only in SC70-5 package vs. µDFN-6 of MAX6776LTC+ | Requires different PCB footprint and land pattern; identical functional integration | Select when board layout uses SC70-5 and no µDFN rework is feasible |
| TLV7031DBVR | General-purpose nanopower comparator (650nA IQ) without built-in hysteresis or reference; requires external resistor network | Demands additional components for threshold setting and hysteresis, increasing BOM count and layout area | Choose only if custom thresholds or dynamic hysteresis adjustment is required beyond MAX6776LTC+ capabilities |
Compared with MAX6776XKC+T, the MAX6776LTC+ offers identical functionality in a smaller 6-pin µDFN package, reducing board area by ~30%. Versus TLV7031DBVR, MAX6776LTC+ delivers integrated 10% hysteresis and precision reference, eliminating design complexity and component count for standard low-battery detection.
Availability
MAX6776LTC+ is available at Aetrix Electronics and suitable for battery-powered medical devices, portable consumer electronics, and industrial handheld instruments requiring stable component supply and long-term lifecycle support.
Supply support for MAX6776LTC+ 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 is a U.S.-based semiconductor company specializing in analog and mixed-signal ICs for power, sensing, and interface applications.
The MAX6775–MAX6781 family was engineered specifically for ultra-low-power battery voltage supervision in space-constrained portable systems, prioritizing accuracy, hysteresis stability, and minimal quiescent current.
FAQ
What is the exact falling threshold voltage of the MAX6776LTC+ at room temperature?
The MAX6776LTC+ has a typical falling threshold voltage (VLBIF) of 1.0998V at +25°C, with guaranteed min/max bounds of 1.0888V and 1.1108V across –40°C to +85°C. This value corresponds to the "C" hysteresis variant (10%) and is factory-trimmed for 1% accuracy over temperature, making it suitable for precise low-battery detection in Li+ and alkaline systems.
Does the MAX6776LTC+ require an external pull-up resistor on the LBO pin?
Yes, the MAX6776LTC+ features an open-drain LBO output and requires an external pull-up resistor to a logic-compatible voltage rail (≤6V). The pull-up may be connected to a different supply than VBATT, enabling direct interfacing with 1.8V, 3.3V, or 5V microcontrollers regardless of battery voltage. Typical values range from 10kΩ to 100kΩ depending on rise-time and drive strength requirements.
Can the MAX6776LTC+ operate reliably at VBATT = 1.2V?
Yes, the MAX6776LTC+ is fully specified to operate down to VBATT = 1.2V and guarantees valid LBO logic states down to VBATT = 1V. At 1.2V, supply current remains within 3.2–6µA, and propagation delay stays at 9µs. This capability supports deep-discharge monitoring in NiCd/NiMH and legacy alkaline systems where cutoff occurs near 1.0–1.2V per cell.
What is the maximum allowable input voltage on the LBI pin of the MAX6776LTC+?
The LBI pin of the MAX6776LTC+ accepts voltages from –0.3V to the lesser of (VBATT + 0.3V) or +6V. For example, with VBATT = 3.6V, LBI may safely swing from –0.3V to +3.9V. This rail-to-rail input range accommodates standard resistive dividers from higher-voltage sources, provided absolute maximum ratings are not exceeded.
How does the 10% hysteresis of the MAX6776LTC+ improve system reliability compared to zero-hysteresis monitors?
The 10% hysteresis in the MAX6776LTC+ creates a 122mV gap between rising (1.222V) and falling (1.0998V) thresholds, preventing output chatter during battery voltage recovery after load removal or in noisy environments. Unlike zero-hysteresis comparators that may oscillate near threshold, MAX6776LTC+ ensures clean, single-event assertion/deassertion-critical for interrupt-driven firmware and avoiding spurious resets in battery-powered systems.
MAX6776LTC+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WFDFN
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Battery Monitor
- Battery Chemistry:
- Multi-Chemistry
- Number of Cells:
- 1
- Fault Protection:
- -
- Interface:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-µDFN (1.5x1)
MAX6776LTC+ FAQ
1.How can I place an order for MAX6776LTC+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6776LTC+ 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 MAX6776LTC+ reliable?
The price and inventory of MAX6776LTC+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6776LTC+ is usually 5 days.
3.What payment methods are accepted for MAX6776LTC+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6776LTC+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6776LTC+?
MAX6776LTC+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6776LTC+ 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 MAX6776LTC+?
For technical support, including MAX6776LTC+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6776LTC+ requirements.
6.How does Aetrix verify that MAX6776LTC+ is sourced from the original manufacturer or authorized distributors?
All MAX6776LTC+ 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 MAX6776LTC+ meets industry standards.
7.What is the process for return or replacement of MAX6776LTC+?
All MAX6776LTC+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6776LTC+, 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 MAX6776LTC+ part is unused and in its original packaging.
Return procedure for MAX6776LTC+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6776LTC+ Tags
-
BQ29700DSER
Texas Instruments
-
S-8241ABKMC-GBKT2G
ABLIC Inc.
-
S-8241ABPMC-GBPT2G
ABLIC Inc.
-
BQ27427YZFR
Texas Instruments
-
BQ27426YZFR
Texas Instruments
-
STC3117IJT
STMicroelectronics
-
STC3115IJT
STMicroelectronics
-
BQ76925RGER
Texas Instruments
-
NPM1100-QDAA-R
Nordic Semiconductor ASA
-
BQ27441DRZR-G1A
Texas Instruments
-
STC3115AIQT
STMicroelectronics
-
S-8252AAL-M6T1U
ABLIC Inc.
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…
