My Inquiry
My Account
Analog Devices Inc. LTC4000EGN#TRPBF
- Part No.:
- LTC4000EGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Battery Chargers
- Package:
- 28-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC4000EGN#TRPBF.pdf
- Description:
- IC BATT CHG IRON PHOSPHAT 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,974
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC4000EGN#TRPBF 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 Li-ion/LiFePO₄ 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™ instant-on operation with heavily discharged batteries.
For engineers reviewing the LTC4000EGN#TRPBF datasheet, LTC4000EGN#TRPBF pinout, LTC4000EGN#TRPBF application, or LTC4000EGN#TRPBF equivalent, key selection criteria include its dual ideal diode control (input and battery), NTC-based temperature qualified charging, C/X or timer-based termination, and compatibility with buck, boost, or buck-boost converter topologies for scalable high-power battery systems.
Technical Context
The LTC4000EGN#TRPBF 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 external DC/DC converter compensation networks. Its PowerPath architecture uses two external PFETs: one for low-loss reverse-current blocking at the input (IID→CSP), another for bidirectional battery power routing (BAT↔CSN) enabling seamless switchover and instant-on functionality.
It integrates precision current sensing with 20× gain and <±300 µV offset, NTC thermistor interface with cold/hot thresholds at 75%/35% of BIAS, and dual open-drain status outputs (CHRG/FLT) with defined state combinations indicating charge progress, fault conditions (over/under-temp, bad battery), and termination mode. All critical thresholds-including VOUT(INST_ON) at 86% of VBFB_REG and VLOBAT at 68%-are specified over –40°C to 125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 60V - supports wide-range industrial, telecom, and portable power inputs including 48V bus and multi-cell battery packs. |
| Battery Float Voltage Accuracy | ±0.25% - ensures precise cell voltage control for LiFePO₄ (e.g., 10.8V for 3-cell) and Li-ion chemistries without calibration drift. |
| Charge Current Limit Accuracy | ±1% - enables reliable high-current charging up to 10A+ when paired with external sense resistors and power stages. |
| PowerPath Instant-On Threshold | VOUT(INST_ON) = 86% of VBFB_REG - guarantees immediate system power delivery even when battery voltage drops below 3V per cell. |
| NTC Temperature Sensing | VNTC(COLD)/VNTC(HOT) = 75%/35% of VBIAS - provides robust thermal qualification across –20°C to +60°C battery operating range. |
| Package | 28-Lead Plastic SSOP - surface-mount package with exposed thermal pad on QFN variant; EGN denotes SSOP variant rated for –40°C to 125°C. |
| Operating Junction Temp | –40°C to 125°C - validated for industrial and extended-temperature embedded applications with no derating required. |
Pinout & Package
Package: 28-Lead Plastic SSOP (GN), 1.0 mm pitch, body size 10.2 mm × 5.3 mm. Thermal resistance θJA = 80°C/W, θJC = 25°C/W. Exposed pad not present in SSOP; GND pins (6, 24) must be connected to PCB ground plane for stable operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 23) | Main input supply connection | Accepts 3V–60V DC; powers internal circuitry and drives IGATE for input ideal diode control. |
| BAT (Pin 13) | Battery anode interface | Connects to positive terminal of battery pack; serves as anode for BGATE-controlled battery ideal diode. |
| CSN (Pin 15) | Charge current sense negative / battery ideal diode cathode | Completes current sense path with CSP; also functions as cathode for battery-side PMOS during discharge or instant-on. |
| CSP (Pin 16) | Charge current sense positive / input ideal diode cathode | Sense input for battery current; also cathode for input-side PMOS driven by IGATE. |
| IGATE (Pin 18) | Input PFET gate driver | Drives external PMOS between IID and CSP; provides low-loss reverse-blocking and load sharing with input source. |
| BGATE (Pin 14) | Battery PFET gate driver | Controls external PMOS between BAT and CSN; regulates output voltage during instant-on and enables efficient charging/discharging paths. |
| ITH (Pin 20) | Control voltage output | High-impedance node sinking up to 1mA; connects to converter compensation network to enforce all regulation limits. |
| CL (Pin 4) | Charge current limit programming | Sources 50 µA; sets maximum battery charge current via resistor to GND (e.g., 10kΩ → ~10A with 5mΩ sense). |
| IL (Pin 28) | Input current limit programming | Sources 50 µA; defines max input current draw to prevent source overload or thermal stress in upstream supplies. |
| NTC (Pin 10) | Thermistor interface | Reads voltage divider formed by NTC and BIAS; suspends charging if temperature exceeds safe thresholds (cold/hot). |
| CHRG / FLT (Pins 7/8) | Open-drain status indicators | CHRG = low during active charge; FLT = low on over/under-temp or bad battery detection; combined states encode operational mode. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Ideal Diode Control | Independent IGATE and BGATE drivers enable lossless input reverse-blocking and battery power-path management with <20 mV forward drop. |
| Instant-On Operation | Regulates OFB to 0.974V (86% of float) during deep discharge, delivering valid system voltage before battery reaches full charge threshold. |
| Four Independent Regulation Loops | Simultaneous control of input current, battery charge current, battery float voltage, and output voltage via shared ITH node interfacing with external DC/DC converters. |
| Temperature-Qualified Charging | NTC input with programmable cold/hot thresholds (75%/35% of BIAS) and 5% hysteresis prevents charging outside safe thermal envelope. |
| Precision Current Sensing | 20× gain amplifier with <±300 µV offset allows use of low-value, low-power sense resistors (e.g., 5 mΩ) in high-current (>10A) applications. |
Applications
| Portable Medical Defibrillators | Industrial Handheld Test Equipment |
|---|---|
Use Scenario: Battery-powered defibrillator requiring immediate operation after long storage with deeply discharged LiFePO₄ pack. IC Role / Device Role / Timing Role: LTC4000EGN#TRPBF acts as intelligent charge manager and PowerPath controller, enabling instant-on system power while simultaneously conditioning the battery. Use Value: Eliminates boot delay and ensures life-critical device readiness by delivering regulated output voltage even at battery voltages below 3V/cell. | Use Scenario: Ruggedized handheld oscilloscope with dual-input capability (AC adapter + hot-swappable battery). IC Role / Device Role / Timing Role: LTC4000EGN#TRPBF manages seamless source switchover, input current limiting, and battery top-off using external buck converter and dual PFETs. Use Value: Prevents brownouts during AC-to-battery transition and enforces strict input current limits to comply with USB PD or field power constraints. |
| Telecom Remote Radio Units | Mobile Military Data Terminals |
Use Scenario: Outdoor 4G/5G RRUs powered by 48V PoE++ or backup Li-ion battery under wide ambient temperature extremes. IC Role / Device Role / Timing Role: LTC4000EGN#TRPBF provides temperature-compensated charging, input overvoltage protection, and battery health monitoring via CHRG/FLT status signaling. Use Value: Extends battery service life in uncontrolled environments by halting charge outside –20°C to +60°C and detecting failed cells via timed low-voltage hold. | Use Scenario: Tactical tablet used in dismounted operations with rapid battery swap and mission-critical uptime requirements. IC Role / Device Role / Timing Role: LTC4000EGN#TRPBF orchestrates fast recharging of high-capacity Li-ion packs while maintaining continuous system operation through PowerPath arbitration. Use Value: Enables hot-swap battery replacement without system reset and sustains operation during transient input interruptions using battery buffer. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery charge controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ24610RGER | Single-input (no dual ideal diode), fixed 14.4V float, no instant-on, lower max input voltage (28V) | Suitable only for basic 4S Li-ion charging with AC adapter input; lacks battery-backed system power continuity. | Select when cost sensitivity outweighs PowerPath flexibility and wide-input capability. |
| MP2722GQZ | Integrated FETs (no external PFETs), 3.5V–24V input, no NTC interface, no instant-on support | Targeted at compact consumer electronics; limited to low-voltage single-cell or 2S Li-ion with onboard switching. | Choose for space-constrained designs where external MOSFET layout and thermal management are impractical. |
Compared with BQ24610RGER and MP2722GQZ, the LTC4000EGN#TRPBF uniquely supports dual-input arbitration, instant-on down to 2.5V battery voltage, and full programmability of float voltage, current limits, and termination modes-making it essential for high-reliability industrial and defense battery systems requiring guaranteed runtime continuity.
Availability
LTC4000EGN#TRPBF is available at Aetrix Electronics and suitable for industrial handheld test equipment, telecom remote radio units, and mobile military data terminals requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC4000EGN#TRPBF 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) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC4000EGN#TRPBF belongs to ADI's Linear Technology legacy Power Management portfolio, designed specifically for high-voltage, high-current battery charging systems requiring intelligent PowerPath control, wide input/output flexibility, and robust thermal and fault management.
FAQ
What is the primary function of the LTC4000EGN#TRPBF in a battery-powered system?
The LTC4000EGN#TRPBF is a high-voltage battery charge controller IC that transforms externally compensated DC/DC converters into fully featured battery chargers. It manages input current, battery charge current, float voltage, and output voltage regulation while enabling PowerPath™ instant-on operation and dual ideal diode control. The LTC4000EGN#TRPBF does not include power switches but interfaces with external PFETs and converter ICs to deliver scalable, high-efficiency charging solutions for Li-ion and LiFePO₄ chemistries.
Does the LTC4000EGN#TRPBF support temperature-qualified charging, and how is it implemented?
Yes, the LTC4000EGN#TRPBF supports temperature-qualified charging via its dedicated NTC pin (Pin 10). It monitors a voltage divider formed between a thermistor and the internal 2.9V BIAS regulator. Charging is suspended when the NTC pin voltage falls outside programmable cold (75% of BIAS) and hot (35% of BIAS) thresholds, with 5% hysteresis. This ensures safe charging only within validated thermal windows, and the LTC4000EGN#TRPBF resumes charging automatically once temperature returns to the safe range.
How does the LTC4000EGN#TRPBF achieve "instant-on" operation with a deeply discharged battery?
The LTC4000EGN#TRPBF achieves instant-on by regulating the OFB feedback pin to 0.974V (≈86% of the programmed float voltage) when the battery voltage is too low for normal regulation. This forces the BGATE-driven external PFET to establish a controlled conduction path, delivering a valid output voltage (e.g., 10.2V for a 10.8V float) to downstream systems immediately-even if the battery is below 3V per cell. The LTC4000EGN#TRPBF maintains this mode until the battery recovers sufficiently to sustain full regulation.
What are the key differences between the LTC4000EGN#TRPBF and the QFN-packaged LTC4000EUFD#TRPBF?
The LTC4000EGN#TRPBF uses a 28-lead plastic SSOP package (10.2 mm × 5.3 mm), while the LTC4000EUFD#TRPBF uses a 4 mm × 5 mm QFN with exposed thermal pad. Both share identical electrical specifications and pin functions, but differ in thermal performance: SSOP has θJA = 80°C/W and θJC = 25°C/W, whereas QFN offers θJA = 43°C/W and θJC = 4°C/W. The LTC4000EGN#TRPBF is preferred for cost-sensitive, lower-power applications where board space is less constrained; the QFN variant suits high-density, thermally demanding designs.
Can the LTC4000EGN#TRPBF be used with boost or buck-boost converters, or is it limited to buck topologies?
The LTC4000EGN#TRPBF is topology-agnostic and fully compatible with buck, boost, and buck-boost DC/DC converters, provided they feature a high-impedance control node (e.g., COMP, ITH, or FB) that can accept the LTC4000EGN#TRPBF's ITH output. Its regulation loops drive the ITH pin to enforce limits regardless of converter architecture. Reference designs confirm successful implementation with LT3757 (boost) and LT8705 (buck-boost), confirming the LTC4000EGN#TRPBF's flexibility across voltage step-up, step-down, and inversion applications.
LTC4000EGN#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PowerPath™
- Package/Case:
- 28-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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#TRPBF FAQ
1.How can I place an order for LTC4000EGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4000EGN#TRPBF 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#TRPBF reliable?
The price and inventory of LTC4000EGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4000EGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC4000EGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4000EGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4000EGN#TRPBF?
LTC4000EGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4000EGN#TRPBF 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#TRPBF?
For technical support, including LTC4000EGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4000EGN#TRPBF requirements.
6.How does Aetrix verify that LTC4000EGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC4000EGN#TRPBF 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#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC4000EGN#TRPBF?
All LTC4000EGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4000EGN#TRPBF, 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#TRPBF part is unused and in its original packaging.
Return procedure for LTC4000EGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC4000EGN#TRPBF 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…
