My Inquiry
My Account
Analog Devices Inc. LTC4000EGN#PBF
- Part No.:
- LTC4000EGN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Battery Chargers
- Package:
- 28-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC4000EGN#PBF.pdf
- Description:
- IC BATT CHG IRON PHOSPHAT 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:122
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC4000EGN#PBF from Analog Devices (formerly Linear Technology) is a high-voltage, high-performance battery charge controller IC that converts externally compensated DC/DC converters into full-featured battery chargers. It supports 3V–60V input and output ranges, delivers ±1% programmable input/charge current limits, ±0.25% accurate float voltage regulation, and enables PowerPath™ control with external PFETs for instant-on operation and reverse-current protection.
For engineers reviewing the LTC4000EGN#PBF datasheet, LTC4000EGN#PBF pinout, LTC4000EGN#PBF application, or LTC4000EGN#PBF equivalent, key selection considerations include its dual ideal diode architecture (input and battery), NTC-based temperature qualified charging, C/X or timer-based termination, and compatibility with wide-input buck, boost, or buck-boost converter topologies for LiFePO₄, Li-ion, and lead-acid battery systems.
Technical Context
The LTC4000EGN#PBF implements four independent regulation loops-input current, battery charge current, battery float voltage, and output voltage-each feeding into a shared high-impedance ITH control node that interfaces with the external DC/DC converter's compensation network. Its PowerPath™ architecture uses two separate PFET gate drivers (IGATE and BGATE) to manage input-to-system and battery-to-system power routing with sub-20mV forward voltage regulation and fast turn-on/turn-off thresholds.
It integrates precision current sensing (20× gain, ±300µV offset), a 2.9V BIAS regulator, open-drain status outputs (CHRG, FLT, RST), and dedicated pins for NTC thermistor monitoring, timer capacitor timing, and recharge threshold hysteresis-all operating across –40°C to 125°C junction temperature range in the SSOP package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 60V - supports wide-range industrial, automotive, and off-grid power sources without pre-regulation |
| Battery Float Voltage Accuracy | ±0.25% - enables precise 10.8V regulation for 3-cell LiFePO₄ packs with minimal thermal drift |
| Charge Current Limit Accuracy | ±1% - ensures repeatable high-current charging (e.g., 10A) using external sense resistors and CL pin programming |
| PowerPath Forward Regulation | 0.1mV to 20mV - achieves ultra-low-loss ideal diode behavior for both input and battery paths |
| NTC Temperature Thresholds | Cold: 75% VBIAS; Hot: 35% VBIAS - provides configurable, hysteresis-enabled thermal qualification for safe charging |
| Instant-On Threshold | 86% of VBFB_REG (≈0.974V) - guarantees immediate system power delivery even when battery voltage drops below 3V |
| Operating Junction Temp | –40°C to 125°C - rated for harsh environments including industrial battery backup and portable instrumentation |
Pinout & Package
The LTC4000EGN#PBF is housed in a 28-lead plastic SSOP package (GN), with exposed thermal pad not present (unlike QFN variant). Pin functions are identical between SSOP and QFN packages per datasheet Figure 1 and Pin Configuration table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN / CLN | Input supply and current sense negative | Accepts 3–60V input; senses input current via external resistor between IN and CLN |
| CSP / CSN | Charge current sense positive/negative | Forms battery charge current sense path; also serves as cathodes for input/battery ideal diodes |
| BAT / BGATE | Battery anode and PMOS gate drive | Connects to battery pack anode; drives external PFET to enable PowerPath discharge and instant-on |
| IGATE / IID | Input PMOS gate drive and anode | Drives input-side PFET; IID is anode node - together enabling low-loss reverse-blocking and load sharing |
| OFB / BFB | Output and battery feedback inputs | High-impedance nodes setting output voltage (1.193V ref) and battery float voltage (1.136V ref) |
| CL / IL / CX / TMR | Current limit, termination, and timing programming | Resistor-programmed pins for charge/input current limits, C/X termination, and 2.3–3.5h timer-based cutoff |
| NTC / VM / BIAS | Thermistor interface, voltage monitor, bias rail | Enables temperature-qualified charging; monitors system voltage for reset; supplies 2.9V reference for dividers |
| CHRG / FLT / RST | Status indicator outputs | Open-drain signals indicating active charge, fault (temp/low-bat), and monitored voltage undervoltage |
Key Features
| Feature | Design Value |
|---|---|
| Intelligent PowerPath™ Control | Dual external PFET drivers (IGATE/BGATE) enable seamless switchover, reverse-current blocking, and instant-on down to <3V battery voltage |
| Programmable Charge Termination | Supports both C/X ratio (e.g., C/10 trickle) and timer-based cutoff (2.3–3.5h) with independent configuration |
| Precision Current Sensing | 20× gain amplifier with ±300µV offset allows use of low-value, high-power sense resistors for 10A+ applications |
| Temperature-Qualified Charging | NTC input with cold/hot thresholds (75%/35% VBIAS) and 5% hysteresis prevents charging outside safe thermal window |
| Bad Battery Detection | Monitors battery voltage during charge; asserts FLT if VBAT remains below 68% of float voltage beyond timer duration |
| Wide Operating Voltage Range | 3V–60V input/output capability eliminates need for auxiliary regulators in multi-chemistry battery systems |
Applications
| Industrial Battery Backup Systems | High-Performance Portable Instruments |
|---|---|
Use Scenario: Uninterruptible power for PLCs, RTUs, and remote telemetry units during AC mains failure. IC Role / Device Role / Timing Role: LTC4000EGN#PBF acts as the central charge manager and PowerPath arbiter, coordinating between 48V DC input and 36V LiFePO₄ battery stack while maintaining continuous 12V system output. Use Value: Enables >99.9% uptime via instant-on capability and precise 10.8V/cell float regulation, reducing battery stress and extending cycle life by 25% vs. fixed-threshold controllers. | Use Scenario: Field-deployable gas analyzers requiring 8-hour runtime on removable Li-ion packs with thermal safety. IC Role / Device Role / Timing Role: LTC4000EGN#PBF configures charge profile based on NTC feedback, enforces C/10 termination at end-of-charge, and maintains regulated 5V USB-C output during operation. Use Value: Guarantees safe charging across –20°C to +60°C ambient via programmable NTC thresholds, eliminating risk of thermal runaway in uncontrolled environments. |
| Notebook/Subnotebook Computers | High Power Battery Charger Systems |
Use Scenario: Dual-input (AC adapter + USB PD) charging for compact Windows/Linux subnotebooks with 2S/3S Li-ion batteries. IC Role / Device Role / Timing Role: LTC4000EGN#PBF manages input prioritization, regulates 8.4V/12.6V float voltage, and controls external PFETs to prevent backfeed between sources. Use Value: Delivers 15W+ charging efficiency (>94%) with <20mV ideal diode drop, reducing heat generation and PCB area vs. discrete Schottky solutions. | Use Scenario: 10A benchtop LiFePO₄ charger supporting 3–12 cell configurations with data logging and fault reporting. IC Role / Device Role / Timing Role: LTC4000EGN#PBF serves as the analog front-end controller, interfacing with microcontroller via CHRG/FLT status lines and analog IIMON/IBMON current monitors. Use Value: Provides ±1% current accuracy and ±0.25% voltage accuracy over full temperature range, meeting IEC 62368-1 compliance requirements for professional test equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery charge controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC4000EUFD#PBF | Identical functionality and pinout; differs only in 4mm × 5mm QFN-28 package with exposed thermal pad | Better thermal performance (θJC = 4°C/W vs. 25°C/W) - preferred for >5A continuous operation or sealed enclosures | Select LTC4000EUFD#PBF when board layout allows QFN mounting and thermal management requires lower junction-to-case resistance. |
| BQ24610RTVR | Lower input voltage max (28V), no PowerPath™, single ideal diode, no NTC input, fixed 14.4V float | Targeted at cost-sensitive 2–4 cell Li-ion laptop chargers without instant-on or wide-input flexibility | Choose BQ24610RTVR only for simpler, lower-voltage applications where LTC4000EGN#PBF's wide VIN, dual PowerPath, and precision programmability are unnecessary. |
Compared with LTC4000EUFD#PBF, the LTC4000EGN#PBF trades thermal performance for SSOP ease-of-handling and rework; versus BQ24610RTVR, it adds 2× wider input range, dual ideal diodes, NTC support, and ±0.25% float accuracy - making it suitable for mission-critical industrial and instrumentation designs where reliability and configurability are paramount.
Availability
LTC4000EGN#PBF is available at Aetrix Electronics and suitable for industrial battery backup systems, high-performance portable instruments, notebook/subnotebook computers, and high-power battery charger systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LTC4000EGN#PBF 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, Inc. (ADI) acquired Linear Technology in 2017 and maintains full product support, documentation, and manufacturing continuity for all Linear parts including the LTC4000 series.
The LTC4000 product line was designed to provide flexible, high-accuracy battery charging and intelligent PowerPath control for demanding applications such as industrial backup, portable medical devices, and ruggedized computing - bridging the gap between monolithic chargers and discrete DC/DC + control solutions.
FAQ
What is the maximum input voltage supported by the LTC4000EGN#PBF?
The LTC4000EGN#PBF supports an absolute maximum input voltage of 62V on the IN and CLN pins, with a recommended operating range of 3V to 60V. This wide input range allows direct integration with 48V industrial buses, solar arrays, and multi-cell battery inputs without external step-down stages. Operation at 60V is fully characterized across temperature and load conditions per the Electrical Characteristics table.
Does the LTC4000EGN#PBF include integrated MOSFETs for PowerPath control?
No, the LTC4000EGN#PBF does not include integrated MOSFETs. It provides two dedicated gate drivers - IGATE for the input-side PFET and BGATE for the battery-side PFET - requiring external discrete PMOS transistors (e.g., Si7135DP) to implement low-loss ideal diode and PowerPath functionality. This architecture enables optimization for voltage, current, and thermal requirements specific to each application.
How does the LTC4000EGN#PBF achieve "instant-on" operation with a deeply discharged battery?
The LTC4000EGN#PBF achieves instant-on by regulating the BGATE driver to maintain the OFB feedback pin at 0.974V (86% of the programmed float voltage) when VOFB falls below the VOUT(INST_ON) threshold. This forces the battery-side PFET to operate in linear mode, delivering regulated output voltage (e.g., 12V) to downstream circuitry even if the battery is at 2.5V - ensuring system power-up before charging begins.
Can the LTC4000EGN#PBF be used with lithium iron phosphate (LiFePO₄) batteries?
Yes, the LTC4000EGN#PBF is explicitly validated for LiFePO₄ chemistries, including the 48V-to-10.8V three-cell buck charger reference design shown in the datasheet. Its ±0.25% float voltage accuracy, programmable C/10 trickle charge, and temperature-qualified charging via NTC make it ideal for LiFePO₄'s narrow 3.4V–3.6V/cell voltage window and thermal sensitivity.
What package type is used for the LTC4000EGN#PBF?
The LTC4000EGN#PBF uses a 28-lead plastic SSOP (Shrink Small Outline Package) with standard gull-wing leads. It is distinct from the QFN variant (LTC4000EUFD#PBF) and features identical pin functions but different thermal characteristics (θJA = 80°C/W, θJC = 25°C/W) and reflow/reflow-compatible leaded packaging suited for automated assembly and field repairability.
LTC4000EGN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PowerPath™
- Package/Case:
- 28-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Battery Chemistry:
- Lithium Iron Phosphate
- Number of Cells:
- -
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Timer
- Fault Protection:
- Reverse Current
- Charge Current - Max:
- -
- Battery Pack Voltage:
- -
- Voltage - Supply (Max):
- 60V
- Interface:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SSOP
LTC4000EGN#PBF FAQ
1.How can I place an order for LTC4000EGN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4000EGN#PBF 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 LTC4000EGN#PBF reliable?
The price and inventory of LTC4000EGN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4000EGN#PBF is usually 5 days.
3.What payment methods are accepted for LTC4000EGN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4000EGN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4000EGN#PBF?
LTC4000EGN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4000EGN#PBF 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 LTC4000EGN#PBF?
For technical support, including LTC4000EGN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4000EGN#PBF requirements.
6.How does Aetrix verify that LTC4000EGN#PBF is sourced from the original manufacturer or authorized distributors?
All LTC4000EGN#PBF 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 LTC4000EGN#PBF meets industry standards.
7.What is the process for return or replacement of LTC4000EGN#PBF?
All LTC4000EGN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4000EGN#PBF, 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 LTC4000EGN#PBF part is unused and in its original packaging.
Return procedure for LTC4000EGN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC4000EGN#PBF 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…
