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Analog Devices Inc. LTC4060EDHC#TRPBF
- Part No.:
- LTC4060EDHC#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Battery Chargers
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC4060EDHC#TRPBF.pdf
- Description:
- IC BAT CHG MULT-CHEM 1-4CL 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,798
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Product details
Overview
LTC4060EDHC#TRPBF from Analog Devices (formerly Linear Technology) is a standalone linear fast charger IC for 2-cell NiMH/NiCd batteries, featuring –∆V termination, programmable 2A fast charge current (±5% accuracy), automatic precharge, and thermistor-based temperature qualification. It operates from 4.5V to 10V input and delivers precise charging control in portable medical devices and consumer docks.
For engineers reviewing the LTC4060EDHC#TRPBF datasheet, LTC4060EDHC#TRPBF pinout, LTC4060EDHC#TRPBF application, or LTC4060EDHC#TRPBF equivalent, key selection considerations include its 16-lead DFN package with exposed thermal pad, dual-cell voltage sensing, no external sense resistor requirement, and support for manual shutdown and automatic recharge at <1µA sleep current.
Technical Context
The LTC4060EDHC#TRPBF implements a fully autonomous linear charging architecture using an external PNP pass transistor driven via the DRIVE pin. Its internal current-sense resistor (0.03Ω) and 1.5V PROG pin reference enable accurate current programming without external sensing components.
Charge state management includes three-tiered termination: primary –∆V detection (5–21mV, chemistry-selectable via CHEM pin), secondary timer-based cutoff (programmable via TIMER/PROG), and tertiary overvoltage protection (1.85–2.05V/cell). Battery presence, temperature qualification, and undervoltage lockout (with 100mV hysteresis and cell-count-dependent thresholds) are all handled on-die.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 10V - supports common 5V/9V wall adapters and USB-powered docks without LDO pre-regulation. |
| Fast Charge Current | 0.4A to 2A (±5% at 2A) - set by single external resistor (RPROG); enables full 2-cell NiMH charging in ≤90 minutes. |
| Termination Method | –∆V detection (5–21mV/cell) + max time + overvoltage - eliminates need for microcontroller firmware or complex state machines. |
| Sleep Mode Drain | <1µA - preserves battery capacity during long-term storage in portable medical or handheld equipment. |
| Operating Temp Range | –40°C to +85°C - qualified for industrial and medical ambient environments without derating. |
| Package | 16-lead 5mm × 3mm DFN (DHC), 0.75mm height, exposed GND pad - optimized for thermal dissipation in compact battery compartments. |
| Battery Cell Support | Configurable for 1–4 series cells via SEL0/SEL1 pins - LTC4060EDHC#TRPBF is factory-configured for 2-cell operation per marking and datasheet default. |
Pinout & Package
16-lead plastic DFN (DHC16) package with exposed metal pad (Pin 17 = GND), 5mm × 3mm footprint, 0.75mm profile. Thermal pad must be soldered to PCB ground plane to achieve θJA = 37°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DRIVE (1) | PNP base drive output | Sinks up to 120mA to control external PNP transistor; includes current-limit protection. |
| BAT (2) | Battery voltage sense input | Monitors total pack voltage; internal divider disconnects in shutdown to prevent battery drain. |
| SENSE (3) | Current sense node | Connects to PNP emitter; carries full charge current through internal 0.03Ω resistor for regulation. |
| SHDN (5) | Active-low shutdown input | Pulling low halts charging, resets timer, reduces VCC supply current to 325µA. |
| PROG (7) | Charge current programming | 1.5V virtual reference; RPROG sets fast charge current as ICHG = 930 × (1.5V/RPROG). |
| CHEM (12) | Chemistry select input | High = NiCd (–∆V = 11–21mV), Low = NiMH (–∆V = 5–14mV); configures termination sensitivity. |
| CHRG (15) | Open-drain charge status | Drives LED low during precharge/fast charge; remains low during pause or thermal suspension. |
| GND (16) & Exposed Pad (17) | Power and thermal reference | Both internally tied to GND; exposed pad is mandatory for thermal performance and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| No microcontroller required | Fully autonomous state machine handles precharge, fast charge, termination, and auto-recharge without firmware. |
| Accurate current regulation | ±5% fast charge current accuracy at 2A ensures predictable charge time and avoids over-stress of NiMH cells. |
| Multi-layer safety monitoring | Simultaneous real-time checks for battery presence, overvoltage, temperature (NTC), and die overtemperature. |
| Low-power sleep mode | <1µA battery leakage when VCC removed - critical for battery-backed portable instruments. |
| Flexible cell configuration | SEL0/SEL1 pins allow hardware-selectable 1–4 cell support; LTC4060EDHC#TRPBF is marked and characterized for 2-cell use. |
Applications
| Portable Medical Devices | Charging Docks & Cradles |
|---|---|
Use Scenario: Recharging battery packs in handheld ultrasound probes and glucose meters with strict safety and runtime requirements. IC Role / Device Role / Timing Role: Standalone linear charger managing 2-cell NiMH packs, providing –∆V termination and thermal qualification without host processor involvement. Use Value: Eliminates need for embedded firmware updates or calibration; meets IEC 60601-1 leakage current limits via <1µA sleep drain. | Use Scenario: Multi-unit charging stations for enterprise PDAs and ruggedized tablets used in field service operations. IC Role / Device Role / Timing Role: Primary charge controller per bay, coordinating CHRG/ACP status LEDs and supporting hot-swap battery insertion detection. Use Value: Reduces BOM count by removing external sense resistors and blocking diodes; enables consistent 2A charge across 20+ bays with minimal layout variation. |
| Consumer Portable Electronics | Industrial Handheld Terminals |
Use Scenario: Fast-charging battery modules in cordless barcode scanners and wireless headsets requiring <2-hour turnaround. IC Role / Device Role / Timing Role: Linear fast charger IC implementing C/2 precharge and 2A fast charge with automatic recharge at 1.1V/cell threshold. Use Value: Delivers repeatable 95% capacity recovery in ≤75 minutes while preventing voltage overshoot via dual overvoltage and –∆V termination. | Use Scenario: Battery management in explosion-proof handheld terminals deployed in oil/gas refineries with wide ambient temperature swings. IC Role / Device Role / Timing Role: Robust charging supervisor handling –40°C to +85°C operation, NTC-based cold/hot cutoff, and UVLO with hysteresis. Use Value: Ensures safe charging initiation only within 5–45°C battery temperature range; maintains <1µA drain during extended off-grid storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standalone NiMH/NiCd charging applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1555 | USB-powered only (max 5.5V), fixed 500mA charge current, no NTC interface, no programmable autorecharge. | Limited to single-cell, low-power USB peripherals; lacks thermal qualification and multi-cell flexibility. | Select MAX1555 only for cost-sensitive, single-cell USB battery packs where external thermistor support is unnecessary. |
| BQ2002F | Requires external sense resistor, supports only NiCd (no NiMH –∆V tuning), no integrated timer, TSSOP-8 package. | Targeted at legacy NiCd systems with minimal feature requirements; lacks sleep-mode ultra-low drain and modern safety layers. | Choose BQ2002F only for retrofitting existing NiCd-only designs where PCB space and thermal performance are secondary concerns. |
Compared with MAX1555 and BQ2002F, the LTC4060EDHC#TRPBF provides wider input range (4.5–10V), programmable 2A current, integrated NTC qualification, and sub-1µA sleep drain - making it uniquely suitable for high-reliability, multi-cell, thermally aware portable equipment.
Availability
LTC4060EDHC#TRPBF is available at Aetrix Electronics and suitable for portable medical devices, charging docks and cradles, and industrial handheld terminals requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for LTC4060EDHC#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 acquired Linear Technology in 2017 and maintains full technical and manufacturing continuity for the LTC product line, known for high-precision analog and power management ICs.
The LTC4060EDHC#TRPBF belongs to Linear's standalone battery charger family, designed specifically for cost-effective, firmware-free NiMH/NiCd charging in space-constrained portable systems with stringent safety and efficiency demands.
FAQ
What battery chemistries does the LTC4060EDHC#TRPBF support?
The LTC4060EDHC#TRPBF supports both NiMH and NiCd chemistries. The CHEM pin selects termination parameters: logic high enables NiCd –∆V detection (11–21mV/cell), while logic low configures NiMH mode (5–14mV/cell). It does not support Li-ion, LiPo, or lead-acid chemistries. All internal voltage thresholds, including overvoltage (1.85–2.05V/cell) and fast-charge qualification (0.84–0.96V/cell), are calibrated for nickel-based cells only.
Does the LTC4060EDHC#TRPBF require an external current sense resistor?
No, the LTC4060EDHC#TRPBF does not require an external current sense resistor. It uses an internal 0.03Ω precision sense resistor between SENSE and GND, combined with the 1.5V PROG pin reference, to regulate charge current. The external RPROG resistor sets current magnitude (ICHG = 930 × 1.5V/RPROG), eliminating BOM cost and layout area associated with discrete sense resistors.
How is the LTC4060EDHC#TRPBF configured for 2-cell operation?
The LTC4060EDHC#TRPBF is hardware-configured for 2-cell NiMH/NiCd operation via SEL0 and SEL1 pins: SEL0 = VCC and SEL1 = GND. This setting determines the undervoltage lockout thresholds (VUVI2/VUVD2 ≈ 6.7V), adjusts battery removal detection (VBR = 2.05V), and scales internal voltage comparators for 2-cell stack (e.g., overvoltage = 1.95V/cell). The DHC package marking "4060" confirms this variant.
What is the purpose of the exposed pad (Pin 17) on the LTC4060EDHC#TRPBF?
The exposed pad (Pin 17) on the LTC4060EDHC#TRPBF is internally connected to GND and serves as the primary thermal path. Soldering it to a PCB ground plane is mandatory to achieve the specified θJA = 37°C/W. Without proper thermal connection, θJA degrades to 140°C/W, risking thermal shutdown during sustained 2A operation. It also improves EMI performance and provides low-inductance GND return.
Can the LTC4060EDHC#TRPBF operate without an external PNP transistor?
No, the LTC4060EDHC#TRPBF cannot operate without an external PNP pass transistor. It is a controller IC - the DRIVE pin sinks base current to turn on the PNP, while SENSE carries emitter current. The PNP (e.g., MMBT3906 or ZTX653) provides the actual battery charging current path. Omitting it leaves no conduction path from input to battery, rendering the LTC4060EDHC#TRPBF nonfunctional as a charger.
LTC4060EDHC#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Battery Chemistry:
- Multi-Chemistry
- Number of Cells:
- 1 ~ 4
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Timer
- Fault Protection:
- Over Temperature, Over Voltage
- Charge Current - Max:
- 2.1A
- Battery Pack Voltage:
- 1.5V
- Voltage - Supply (Max):
- 10V
- Interface:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (5x3)
LTC4060EDHC#TRPBF FAQ
1.How can I place an order for LTC4060EDHC#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4060EDHC#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 LTC4060EDHC#TRPBF reliable?
The price and inventory of LTC4060EDHC#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4060EDHC#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC4060EDHC#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4060EDHC#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4060EDHC#TRPBF?
LTC4060EDHC#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4060EDHC#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 LTC4060EDHC#TRPBF?
For technical support, including LTC4060EDHC#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4060EDHC#TRPBF requirements.
6.How does Aetrix verify that LTC4060EDHC#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC4060EDHC#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 LTC4060EDHC#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC4060EDHC#TRPBF?
All LTC4060EDHC#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4060EDHC#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 LTC4060EDHC#TRPBF part is unused and in its original packaging.
Return procedure for LTC4060EDHC#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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