My Inquiry
My Account
Analog Devices Inc. ADP3810AR-12.6
- Part No.:
- ADP3810AR-12.6
- Manufacturer:
- Analog Devices Inc.
- Category:
- Battery Chargers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADP3810AR-12.6.pdf
- Description:
- IC BATT CHG CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:2,458
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADP3810AR-12.6 from Analog Devices is a precision Li-ion battery charger controller IC designed for secondary-side isolated off-line charging systems. It provides constant-current/constant-voltage regulation with programmable charge current (100 mA to 1.2 A), ±1.0% final battery voltage accuracy at 12.6 V, and low 300 mV full-scale current sense voltage - enabling high-efficiency control of flyback or buck DC/DC converters in portable medical and industrial battery packs.
For engineers reviewing the ADP3810AR-12.6 datasheet, ADP3810AR-12.6 pinout, ADP3810AR-12.6 application, or ADP3810AR-12.6 equivalent, this device delivers verified Li-ion cell-stack voltage regulation (4-cell configuration), optocoupler-compatible output drive, UVLO protection (2.7 V trip), and integrated 2.000 V reference - all in an SO-8 package suitable for compact, safety-isolated charger designs.
Technical Context
The ADP3810AR-12.6 integrates two GM-type error amplifiers (GMI for current loop, GM2 for voltage loop) sharing a common COMP node for coordinated feedback control. Its internal thin-film resistor divider sets the precise 12.6 V final battery voltage (±1.0% total error including reference, offset, and divider), eliminating external programming resistors.
It operates across 2.7 V to 16 V supply range, features undervoltage lockout (2.7 V turn-on), drives optocouplers directly via its 4–6 mA current-output OUT pin, and uses a buffered high-impedance VCTRL input (0–1.2 V) to set charge current with ≤40 nA bias current - supporting PWM-filtered microcontroller interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Final Battery Voltage | 12.6 V ±1.0% - factory-trimmed for 4-cell Li-ion stacks; no external resistors required. |
| Current Sense Full-Scale | −300 mV ±15 mV - enables accurate 100 mA–1.2 A charging with 0.25 Ω sense resistor. |
| Voltage Reference | 2.000 V ±1.0% - stable, low-noise (35 µVP-P, 0.1–10 Hz), supplies external circuitry. |
| Supply Range | 2.7 V to 16 V - supports operation even when VCC is below battery voltage (e.g., 2.7 V supply controlling 12.6 V stack). |
| UVLO Threshold | 2.7 V (turn-on), 2.6 V (turn-off) - prevents erratic behavior during brownout or startup. |
| Output Drive | 6 mA max, 0.4 V saturation - sufficient to directly drive MOC8103/MOC8102 optocoupler LED side. |
| Operating Temp | −40°C to +85°C - qualified for industrial and medical battery charger environments. |
Pinout & Package
ADP3810AR-12.6 is housed in an SO-8 surface-mount package (5.0 mm × 6.2 mm, 1.27 mm pitch) with standard JEDEC MS-012AC footprint and exposed pad not connected internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT | Optocoupler drive output | Current-source output (4–6 mA); sinks current into optocoupler anode for isolated feedback control. |
| VSENSE | Battery voltage sense input | High-impedance input (630 kΩ for 12.6 V option); connects to top of battery stack via resistor divider. |
| VCS | Current sense input | Inverting input of GMI amplifier; referenced to virtual ground; accepts −32 mV to −300 mV differential. |
| VREF | Precision reference output | 2.000 V ±1.0%; requires 0.1 µF ceramic capacitor to ground for stability and noise suppression. |
| COMP | Shared compensation node | Common node for both GMI and GM2 loops; RC network here compensates voltage loop (fc < 100 Hz). |
| VCTRL | Charge current programming input | 0–1.2 V high-Z input (≤40 nA bias); sets VRCS via internal 80 kΩ resistor and external R3 (e.g., 20 kΩ). |
| VCC | Positive supply | 2.7–16 V input; powers internal amplifiers, reference, and output stage; includes UVLO comparator. |
| GND | Analog ground | Reference return for VREF, VSENSE, VCS, and COMP; must be low-impedance, star-connected to sense resistor. |
Key Features
| Feature | Design Value |
|---|---|
| Four fixed Li-ion voltage options | 12.6 V variant supports 4-cell stacks without external resistors - reduces BOM count and layout complexity. |
| Low dropout reference | 2.000 V output guaranteed to source 5 mA with ≤100 mV dropout - enables stable reference use under load. |
| Isolation-ready output | Current-output OUT pin directly drives optocoupler LEDs - eliminates need for external transistor buffer in flyback chargers. |
| Full-scale current sense | −300 mV full-scale minimizes I²R loss in sense resistor - improves thermal performance and efficiency at high currents. |
| Shorted/open battery tolerance | Operates correctly with VSENSE shorted to GND or open - ensures robust startup and fault recovery in real-world systems. |
Applications
| Medical Portable Defibrillator Charger | Industrial Handheld Analyzer Power Supply |
|---|---|
Use Scenario: Charging sealed 4-cell Li-ion battery packs (12.6 V nominal) used in battery-backed diagnostic equipment requiring CE/IEC 60601 compliance. IC Role / Device Role / Timing Role: Secondary-side voltage/current controller providing isolated CC/CV regulation; replaces discrete op-amp + reference solutions. Use Value: ±1.0% 12.6 V accuracy prevents overcharge-induced thermal runaway; SO-8 footprint simplifies creepage/clearance layout for reinforced isolation. |
Use Scenario: Off-line flyback charger for ruggedized field instruments operating across global AC inputs (85–264 VAC) with 12.6 V Li-ion backup. IC Role / Device Role / Timing Role: Optocoupler-driven feedback controller managing primary-side PWM duty cycle during both CC and CV phases. Use Value: Integrated 2.000 V reference and UVLO enable single-supply operation from auxiliary winding; eliminates external LDO and supervisor ICs. |
| Automotive Diagnostic Tool Battery Pack | Emergency Lighting System Charger |
Use Scenario: 12.6 V Li-ion charger in OBD-II diagnostic tools subjected to automotive temperature extremes (−40°C to +85°C) and vibration. IC Role / Device Role / Timing Role: Precision battery voltage regulator maintaining 4.2 V/cell tolerance across temperature; handles cold-start battery voltage sag. Use Value: Guaranteed −40°C to +85°C operation and 2.7 V UVLO ensure reliable charging during vehicle cranking events. |
Use Scenario: UL-listed emergency exit sign with integrated 4-cell Li-ion backup, requiring fail-safe charge termination and long shelf life. IC Role / Device Role / Timing Role: Constant-voltage clamp preventing overvoltage stress on cells during extended float charging. Use Value: Internal 12.6 V trim eliminates resistor drift errors; 6% overvoltage comparator (13.39 V) adds hardware-level safety margin beyond regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery charger controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP3810AR-16.8 | Fixed 16.8 V final voltage (5-cell Li-ion); identical SO-8 package, pinout, and functional architecture. | Targets 5-cell battery stacks instead of 4-cell; same UVLO, reference, and current programming specs. | Select only if system requires 16.8 V regulation; not interchangeable without redesigning battery pack and sense divider. |
| ADP3811AR | Adjustable final voltage via external R1/R2; ±1.8% reference accuracy; no internal thin-film dividers. | Supports NiCd/NiMH chemistries and custom Li-ion voltages; requires external resistors and tighter tolerance selection. | Choose when flexibility across multiple battery configurations is needed; trade-off is added BOM cost and calibration effort. |
Compared with ADP3810AR-12.6, the ADP3810AR-16.8 offers identical performance but targets higher-voltage stacks, while the ADP3811AR sacrifices factory-calibrated accuracy for design flexibility - making the ADP3810AR-12.6 optimal for volume production of fixed 4-cell Li-ion chargers where precision and simplicity are critical.
Availability
ADP3810AR-12.6 is available at Aetrix Electronics and suitable for medical portable defibrillators, industrial handheld analyzers, automotive diagnostic tools, and emergency lighting systems requiring stable component supply and long-term lifecycle support.
Supply support for ADP3810AR-12.6 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The ADP3810AR-12.6 belongs to Analog Devices' battery management IC product line, engineered specifically for isolated, off-line Li-ion charger controllers that demand precision voltage regulation, optocoupler compatibility, and robust operation across industrial temperature ranges.
FAQ
What is the exact final battery voltage set by ADP3810AR-12.6?
The ADP3810AR-12.6 is factory trimmed to deliver a precise 12.6 V final battery voltage with ±1.0% total accuracy - covering all error sources including reference voltage, amplifier offset, and internal resistor divider mismatch. This corresponds to a 4-cell Li-ion configuration (4 × 4.2 V) and requires no external resistors for voltage setting. The specification is guaranteed over −40°C to +85°C and applies directly to the ADP3810AR-12.6 part number.
Can ADP3810AR-12.6 operate with a supply voltage lower than the battery voltage?
Yes, ADP3810AR-12.6 can operate with VCC as low as 2.7 V while regulating a 12.6 V battery stack. Its internal voltage divider scales the battery voltage down to 2.0 V at the GM2 input, keeping it well within the IC's input voltage limits regardless of VCC. This allows auxiliary winding-derived supplies in flyback topologies to power the ADP3810AR-12.6 independently of the battery voltage - a key enabler for isolated charger designs.
How does ADP3810AR-12.6 handle battery connection faults?
The ADP3810AR-12.6 is explicitly designed to operate under shorted and open battery conditions. When VSENSE is shorted to GND, the voltage loop disables cleanly and the IC defaults to constant-current mode. When VSENSE is open, the internal bias pulls the node to a safe level, preventing latch-up. Both behaviors are documented in the "Full Operation in Shorted and Open Battery Conditions" feature list and validated across temperature - ensuring robust startup and fault recovery in real-world systems using ADP3810AR-12.6.
What is the minimum recommended capacitor for the VREF pin of ADP3810AR-12.6?
The ADP3810AR-12.6 requires a minimum 0.1 µF ceramic capacitor connected between VREF and GND for stable reference operation. This value is specified in the Absolute Maximum Ratings and Typical Performance Characteristics sections of the datasheet. Using less capacitance risks reference instability and increased noise; larger values (e.g., 1 µF) are acceptable and may improve PSRR, but the 0.1 µF capacitor must be placed close to the VREF pin with short traces to maintain performance in the ADP3810AR-12.6.
Does ADP3810AR-12.6 include overvoltage protection beyond regulation?
Yes, ADP3810AR-12.6 includes a dedicated overvoltage comparator that triggers when battery voltage exceeds 6% above full scale - i.e., 13.39 V for the 12.6 V variant. This comparator rapidly increases the OUT current to clamp the DC/DC converter, providing hardware-level protection against transient overvoltage events. Unlike the main GM2 regulation loop, this comparator acts independently and is specified with 8 µs response time - adding a critical safety layer beyond the primary CC/CV control implemented by ADP3810AR-12.6.
ADP3810AR-12.6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1 ~ 4
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Current
- Fault Protection:
- Over Current, Over Voltage
- Charge Current - Max:
- -
- Battery Pack Voltage:
- 12.6V
- Voltage - Supply (Max):
- 16V
- Interface:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADP3810AR-12.6 FAQ
1.How can I place an order for ADP3810AR-12.6 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3810AR-12.6 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 ADP3810AR-12.6 reliable?
The price and inventory of ADP3810AR-12.6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3810AR-12.6 is usually 5 days.
3.What payment methods are accepted for ADP3810AR-12.6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3810AR-12.6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3810AR-12.6?
ADP3810AR-12.6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3810AR-12.6 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 ADP3810AR-12.6?
For technical support, including ADP3810AR-12.6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3810AR-12.6 requirements.
6.How does Aetrix verify that ADP3810AR-12.6 is sourced from the original manufacturer or authorized distributors?
All ADP3810AR-12.6 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 ADP3810AR-12.6 meets industry standards.
7.What is the process for return or replacement of ADP3810AR-12.6?
All ADP3810AR-12.6 units undergo pre-shipment inspection (PSI). If there is an issue with ADP3810AR-12.6, 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 ADP3810AR-12.6 part is unused and in its original packaging.
Return procedure for ADP3810AR-12.6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADP3810AR-12.6 Tags
-
BQ21040DBVR
Texas Instruments
-
MCP73812T-420I/OT
Microchip Technology
-
MCP73831T-2ACI/OT
Microchip Technology
-
MCP73832T-2ACI/OT
Microchip Technology
-
MCP73831T-2DCI/OT
Microchip Technology
-
MCP73832T-2DCI/OT
Microchip Technology
-
MCP73831T-2ATI/OT
Microchip Technology
-
MCP73832T-2ATI/OT
Microchip Technology
-
MCP73831T-5ACI/OT
Microchip Technology
-
MCP73832T-2ACI/MC
Microchip Technology
-
MCP73831T-2ACI/MC
Microchip Technology
-
MCP73831T-2ATI/MC
Microchip Technology
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…
