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Analog Devices Inc. LT1510CS8#TRPBF
- Part No.:
- LT1510CS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Battery Chargers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1510CS8#TRPBF.pdf
- Description:
- IC BATT CHG MULTI-CHEM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,505
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Product details
Overview
LT1510CS8#TRPBF from Analog Devices (formerly Linear Technology) is a constant-voltage/constant-current switching battery charger IC for Li-ion, NiMH, and NiCd batteries. It integrates a 1.5A DC/2A peak internal NPN switch, 0.1Ω onboard current sense resistor, and 0.5% precision voltage reference. Designed for buck-mode charging with 200kHz switching, it delivers >87% efficiency at 1.3A and supports battery voltages from 2V to 20V in an 8-pin SOIC package.
For engineers reviewing the LT1510CS8#TRPBF datasheet, LT1510CS8#TRPBF pinout, LT1510CS8#TRPBF application, or LT1510CS8#TRPBF equivalent, key selection criteria include its integrated current-sense resistor, ground-referenced battery sensing capability, 3µA sleep-mode quiescent current, soft-start control via VC pin, and compatibility with lithium-ion float voltage accuracy requirements (±1% over temperature).
Technical Context
The LT1510CS8#TRPBF implements current-mode PWM control with an internal NPN power switch and integrated 0.1Ω sense resistor between SENSE and BAT pins. Its dual-loop architecture uses CA1 for current amplification (500µA/A transconductance) and VA for voltage regulation, enabling precise CV/CC transitions without external termination circuitry for Li-ion.
It operates as a step-down (buck) converter with fixed 200kHz switching frequency, undervoltage lockout at 7V, and thermal shutdown protection. The VC pin provides analog current programming and external shutdown control, while PROG accepts either resistor-based or DAC-sourced programming current up to 2.465V compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charging Current Accuracy | ±3% typical - enables reliable CC-phase control without calibration. |
| Reference Voltage Accuracy | ±0.5% at 25°C - meets Li-ion float voltage tolerance for safe long-term charging. |
| Switching Frequency | 200kHz ±10% - balances efficiency, inductor size, and EMI performance. |
| Max DC Battery Current | 1.5A - sufficient for fast-charging single-cell to 5-series Li-ion packs. |
| Sleep-Mode Current | 3µA - minimizes reverse battery drain when wall adapter is disconnected. |
| Input Voltage Range | 8V to 28V - supports common AC/DC adapters and industrial power rails. |
| Operating Temp Range | 0°C to 70°C (Commercial) - validated for consumer and industrial ambient conditions. |
Pinout & Package
LT1510CS8#TRPBF is housed in an 8-pin plastic SOIC (SO-8) package with standard JEDEC MS-012AC footprint, θJA = 125°C/W, and fused lead construction for thermal reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Switch Output | Drives external Schottky catch diode; connects to inductor node in buck topology. |
| BOOST | Bootstrap Driver | Supplies gate drive to internal NPN switch; VBOOST = VCC + VBAT during conduction. |
| GND | Ground Reference | Common return for all analog and power circuits; tied directly to battery negative terminal. |
| SENSE | Current Sense Input | High-side or low-side current sensing point; connected to 0.1Ω internal resistor. |
| VCC | Supply Input | Primary power input (8–28V); includes 7V UVLO and internal clamp diode to SW. |
| PROG | Current Programming | Accepts 2.465V-referenced current (e.g., from RPROG or DAC) to set IBAT. |
| VC | Control Loop Input | Analog interface for soft-start ramp (via 0.1µF capacitor) and external shutdown (pull <0.8V). |
| BAT | Battery Voltage Sense | Second current sense terminal; also used with OVP amplifier for CV regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 0.1Ω Sense Resistor | Eliminates external sense resistor and associated layout complexity; reduces BOM count by one precision component. |
| Ground-Referenced Battery Sensing | Allows direct connection of battery negative to system ground - simplifies PCB routing and avoids floating ground issues. |
| 200kHz Fixed-Frequency PWM | Enables use of compact, low-profile inductors (e.g., 10µH ceramic) while maintaining >87% efficiency at 1.3A. |
| 3µA Sleep-Mode Drain | Prevents significant battery self-discharge during adapter removal - critical for portable equipment standby life. |
| 0.5% Voltage Reference | Ensures ±1% total CV accuracy over temperature - satisfies Li-ion manufacturer float voltage specifications. |
Applications
| Smartphone Fast Charging | Industrial Handheld Terminal |
|---|---|
Use Scenario: Compact Li-ion charger for single-cell 3.7V/2000mAh battery in space-constrained mobile device. IC Role / Device Role / Timing Role: Primary constant-current/constant-voltage charging controller with integrated switch and sense resistor. Use Value: Eliminates need for external current-sense resistor and high-side MOSFET driver, reducing solution size by >30% vs discrete alternatives. | Use Scenario: Ruggedized battery charger for 3.6V NiMH pack in warehouse barcode scanner operating at –20°C to 60°C. IC Role / Device Role / Timing Role: Dual-chemistry charger supporting both NiMH and Li-ion with programmable current and CV thresholds. Use Value: Single-footprint design accommodates field-upgradable battery chemistries without hardware change. |
| Medical Portable Monitor | Wireless Sensor Node Charger |
Use Scenario: Low-noise, thermally stable charger for sealed Li-ion battery powering FDA-cleared patient monitor. IC Role / Device Role / Timing Role: Precision CV regulator with ±0.5% reference and <100µV line regulation - ensures safe battery voltage hold. Use Value: Meets medical-grade battery management requirements without external voltage trimming or calibration. | Use Scenario: Ultra-low-quiescent charger for coin-cell–backed IoT sensor node requiring multi-year battery life. IC Role / Device Role / Timing Role: Sleep-mode supervisor and adaptive current limiter activated only during energy harvesting events. Use Value: 3µA shutdown current prevents measurable battery depletion during 99.9% of operational time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery charger IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT3652IMSE#TRPBF | 42V input, 2A switch, 1.2MHz switching, integrated power MOSFET, no internal sense resistor. | Requires external 0.1Ω sense resistor; better suited for higher-input-voltage solar/battery systems. | Select LT3652IMSE#TRPBF when input exceeds 28V or when higher switching frequency is needed for smaller magnetics. |
| TPS2561DRCT | USB-compliant 2.25A load switch with current limiting, no CV regulation or battery chemistry support. | Lacks constant-voltage loop, OVP amplifier, and Li-ion/NiMH charge termination logic. | Choose TPS2561DRCT only for basic current-limited power path control - not a functional replacement for battery charging. |
Compared with LT1510CS8#TRPBF, LT3652IMSE#TRPBF offers higher input voltage and frequency but requires external sensing, while TPS2561DRCT provides only current-limiting functionality without battery-specific regulation - neither matches the integrated CV/CC capability and 0.1Ω sense resistor of LT1510CS8#TRPBF.
Availability
LT1510CS8#TRPBF is available at Aetrix Electronics and suitable for smartphone fast charging, industrial handheld terminals, medical portable monitors, and wireless sensor node chargers requiring stable component supply across production lifecycles.
Supply support for LT1510CS8#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 legacy Linear products including the LT1510 family.
The LT1510 product line was designed specifically for integrated, high-efficiency constant-current/constant-voltage battery charging in space- and cost-constrained portable electronics - emphasizing simplicity, accuracy, and minimal external component count.
FAQ
What battery chemistries does the LT1510CS8#TRPBF support?
The LT1510CS8#TRPBF supports lithium-ion (Li-ion), nickel-metal-hydride (NiMH), and nickel-cadmium (NiCd) batteries. For Li-ion, it provides fully autonomous constant-current/constant-voltage charging with no external termination required. For NiMH and NiCd, external charge termination circuitry is necessary, as noted in the datasheet. The LT1510CS8#TRPBF's 0.5% reference voltage and dual-loop control ensure accurate CV regulation critical for Li-ion safety and longevity.
How is charging current programmed on the LT1510CS8#TRPBF?
Charging current on the LT1510CS8#TRPBF is programmed via the PROG pin using a single resistor to ground or a DAC output capable of sinking current up to 2.465V. The relationship is IBAT = (2.465V / RPROG) × 2000, yielding ±3% typical accuracy. For example, a 4.93kΩ resistor sets 1.0A charging current. The LT1510CS8#TRPBF's internal 0.1Ω sense resistor eliminates the need for an external precision shunt, simplifying layout and reducing BOM cost.
Does the LT1510CS8#TRPBF require an external blocking diode?
No, the LT1510CS8#TRPBF does not require an external blocking diode between the IC and the battery. When the input adapter is unplugged, the LT1510CS8#TRPBF enters sleep mode and draws only 3µA, preventing significant reverse current flow from the battery. This eliminates power loss and board space typically consumed by a Schottky diode - a key advantage of the LT1510CS8#TRPBF's integrated architecture.
What is the purpose of the VC pin on the LT1510CS8#TRPBF?
The VC pin on the LT1510CS8#TRPBF serves two critical functions: soft-start control and external shutdown. A 0.1µF capacitor to ground sets the soft-start ramp rate, with charging current beginning at VC = 0.7V and reaching full value at VC ≈ 1.1V (~3ms). Pulling VC below 0.8V (room temperature) disables switching entirely. This dual-role pin allows precise timing control and failsafe system-level power management in designs using the LT1510CS8#TRPBF.
Can the LT1510CS8#TRPBF charge batteries with negative terminals grounded?
Yes, the LT1510CS8#TRPBF supports ground-referenced battery configurations - the battery's negative terminal can be tied directly to system ground. Its current-sense architecture (via SENSE and BAT pins) and internal 0.1Ω resistor allow accurate measurement regardless of whether sensing occurs at the high or low side. This eliminates level-shifting circuitry and simplifies PCB layout, making the LT1510CS8#TRPBF especially suitable for cost-sensitive and space-constrained applications.
LT1510CS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Battery Chemistry:
- Multi-Chemistry
- Number of Cells:
- -
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- -
- Fault Protection:
- Over Voltage
- Charge Current - Max:
- 1.5A
- Battery Pack Voltage:
- 20V (Max)
- Voltage - Supply (Max):
- 28V
- Interface:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1510CS8#TRPBF FAQ
1.How can I place an order for LT1510CS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1510CS8#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 LT1510CS8#TRPBF reliable?
The price and inventory of LT1510CS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1510CS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1510CS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1510CS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1510CS8#TRPBF?
LT1510CS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1510CS8#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 LT1510CS8#TRPBF?
For technical support, including LT1510CS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1510CS8#TRPBF requirements.
6.How does Aetrix verify that LT1510CS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1510CS8#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 LT1510CS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1510CS8#TRPBF?
All LT1510CS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1510CS8#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 LT1510CS8#TRPBF part is unused and in its original packaging.
Return procedure for LT1510CS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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