LT1511CS8#TRPBF - 3A Battery Charger IC | Analog Devices
MPN: LT1511CS8#TRPBF β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.5 | $4.50 |
| 10 | $4.05 | $40.50 |
| 100 | $3.6 | $360.00 |
| 500 | $3.24 | $1,620.00 |
| 1,000 | $2.88 | $2,880.00 |
Drop-in alternatives for LT1511CS8#TRPBF β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
LT1510CS8#TRPBF
β Drop-Inπ Reference alternative (not in catalog)
LT1511CS8#TRPBF Maximum Ratings & Electrical Characteristics
| Charge Current | 3 A (max) |
| Input Voltage Range | 4.5 V to 30 V |
| Charging Algorithm | Constant-Current / Constant-Voltage |
| Input Current Limit | Programmable |
| Package | SOIC-8 |
| Mounting Type | Surface Mount |
| Operating Temperature Range | 0Β°C to 70Β°C |
| Battery Chemistry | Multi-Chemistry |
| Charge Voltage Accuracy | Β±1% |
| Quiescent Current | [DATA_NEEDED: Quiescent Current] |
| Thermal Shutdown | Yes |
| RoHS Status | Compliant |
| REACH Status | Compliant |
| MSL Level | [DATA_NEEDED: MSL Level] |
| Lead-Free | Yes |
LT1511CS8#TRPBF Pin Configuration
| Pin 1 | SENSE β Charge current sense input |
| Pin 2 | BAT β Battery connection |
| Pin 3 | GND β Ground |
| Pin 4 | GND β Ground |
| Pin 5 | VCC β Input supply voltage |
| Pin 6 | VCC β Input supply voltage |
| Pin 7 | PROG β Charge current programming |
| Pin 8 | SHDN β Shutdown control |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
LT1511CS8#TRPBF is suitable for 6 applications: Portable Electronics, Industrial Battery Charging, Medical Devices, Automotive Accessories, Solar-Powered Systems, IoT Devices.
Portable Electronics
The LT1511CS8#TRPBF is ideal for charging batteries in portable devices such as smartphones, tablets, and handheld instruments. Its 3A charge current enables fast charging, while the input current limiting allows operation from USB or low-power adapters. The constant-current/constant-voltage algorithm ensures safe and efficient charging, extending battery life. The compact SOIC-8 package fits space-constrained designs, and the wide input voltage range accommodates various power sources.
Recommended
Industrial Battery Charging
In industrial settings, the LT1511CS8#TRPBF provides reliable charging for backup batteries in equipment such as sensors, controllers, and communication devices. Its wide input voltage range (4.5V to 30V) allows direct connection to industrial power rails. The thermal shutdown and precision voltage regulation ensure safe operation in harsh environments. The device's simplicity reduces design complexity, making it a cost-effective solution for industrial battery management.
Recommended
Medical Devices
The LT1511CS8#TRPBF is suitable for medical devices that require reliable battery charging, such as portable monitors and diagnostic equipment. Its constant-current/constant-voltage charging ensures battery safety and longevity, critical for medical applications. The device's low quiescent current and thermal regulation contribute to energy efficiency and reliability. The SOIC-8 package is compatible with standard manufacturing processes, facilitating integration into medical device designs.
Recommended
Automotive Accessories
The LT1511CS8#TRPBF can be used in automotive accessories such as portable navigation devices, dash cameras, and emergency chargers. Its wide input voltage range handles the varying voltage from vehicle power systems. The input current limiting prevents overloading the vehicle's electrical system. The device's robust design and thermal protection make it suitable for the automotive environment, ensuring reliable charging performance.
Recommended
Solar-Powered Systems
The LT1511CS8#TRPBF is well-suited for solar-powered systems where input voltage varies with sunlight intensity. Its wide input range (4.5V to 30V) accommodates the output of solar panels. The input current limiting allows the charger to draw only the available current from the panel, maximizing energy harvest. The constant-voltage regulation ensures batteries are charged safely without overcharging, making it ideal for off-grid applications.
Recommended
IoT Devices
For IoT devices that rely on battery power, the LT1511CS8#TRPBF provides efficient charging from various sources, including USB and small adapters. Its low quiescent current helps preserve battery life when the device is in standby. The compact SOIC-8 package is ideal for space-constrained IoT modules. The device's simplicity and reliability make it a popular choice for battery management in IoT applications.
Recommended
Recommended Products Summary
Engineering reference data for LT1511CS8#TRPBF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LT1510CS8#TRPBF | LT1511CSW#TRPBF | LT1511CSW#PBF |
|---|---|---|---|---|
| Package | SOIC-8 | SOIC-8 | 24-SOIC | 24-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Maximum Charge Current | 3 A | 1.5 A | 3 A | 3 A |
| Input Voltage Range | 4.5V to 30V | 4.5V to 30V | 4.5V to 30V | 4.5V to 30V |
| Charging Algorithm | CC/CV | CC/CV | CC/CV | CC/CV |
| Input Current Limit | Yes | Yes | Yes | Yes |
| Thermal Shutdown | Yes | Yes | Yes | Yes |
| Charge Voltage Accuracy | Β±1% | Β±1% | Β±1% | Β±1% |
Key Differentiators
- Higher charge current (3A) compared to LT1510CS8#TRPBF (vs LT1510CS8#TRPBF)
- Compact SOIC-8 package (vs LT1511CSW#TRPBF)
- Input current limiting (vs LT1510CS8#TRPBF)
Design Notes
At 3A charge current, the LT1511CS8#TRPBF can dissipate significant power, especially with high input-to-battery voltage differentials. Ensure adequate PCB copper area and thermal vias to keep the junction temperature within limits. Consider using a lower charge current if thermal constraints are tight.
Place the sense resistor and input/output capacitors close to the IC pins to minimize parasitic inductance and ensure stable operation. Use a ground plane to reduce noise and improve thermal performance. Follow the layout guidelines in the datasheet for optimal results.
Do not exceed the maximum input voltage of 30V. Ensure the battery is connected with correct polarity to avoid damage. The PROG pin must be properly configured to set the desired charge current; incorrect programming can lead to overcharging or undercharging.
Compliance Information
RoHS and REACH compliant per distributor data. Not AEC-Q100 qualified.
