LTC4096EDD#TRPBF - Dual Input Li-Ion Charger | Analog Devices
料号： LTC4096EDD#TRPBF ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.74 | $274.00 |
| 500 | $2.47 | $1,235.00 |
| 1,000 | $2.19 | $2,190.00 |
LTC4096EDD#TRPBF 概述
A battery charger IC is a power management integrated circuit that controls the charging process of rechargeable batteries, ensuring safety and longevity. The LTC4096EDD#TRPBF falls under the category of linear chargers, which use a pass transistor to regulate charge current and voltage. Unlike switching chargers, linear chargers are simpler, smaller, and generate less electromagnetic interference, but they dissipate more heat at higher currents. This device is part of the broader power management IC hierarchy, specifically within battery management and charging solutions.
Key features of the LTC4096EDD#TRPBF include dual-input capability with automatic power source selection, a programmable charge current up to 950mA, and a preset charge voltage of 4.2V with ±1% accuracy. It also includes a 10-hour charge termination timer, C/10 charge current detection, and a low-battery charge conditioning mode. The device operates over an industrial temperature range of -40°C to +85°C and is available in tape and reel packaging for automated assembly.
Technically, the LTC4096EDD#TRPBF uses an internal MOSFET and no external sense resistor or blocking diode, simplifying the design. It features a constant-current/constant-voltage (CC/CV) charging profile, with the constant-voltage phase set to 4.2V. The charge current is programmed by a single resistor from the PROG pin to ground. The device also provides a status output (CHRG) to indicate charging or charge complete, and a low-battery preconditioning mode for deeply discharged cells.
Typical applications include portable electronics such as smartphones, tablets, digital cameras, and handheld medical devices. Its dual-input capability makes it ideal for devices that can be charged from both a wall adapter and a USB port, such as Bluetooth speakers, wearables, and IoT sensors. The small DFN package and minimal external component count make it suitable for space-constrained designs.
When designing with this device, ensure proper thermal management by connecting the exposed pad to a large copper area on the PCB. Also, place the input and output capacitors close to the IC to minimize noise and ensure stable operation. The charge current should be set according to the battery capacity and thermal budget to avoid overheating.
直接替换替代料： LTC4096EDD#TRPBF ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： LTC4096EDD#TRPBF （相同外形与封装尺寸） ——差异在于 Charge Termination, Operating Temperature Range.
快速对比工具——选择替代料号进行并排对比：
LTC4096EDD#PBF
✅ 直接替换✓ 有现货
$2.2 / 个
查看数据手册 →LTC4096XEDD#TRPBF
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LTC4096EDD#TRMPBF
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
BQ24072RGTR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX1555EZK+T
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LTC4096EDD#TRPBF 规格参数
| Battery Chemistry | Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol) |
| Number of Cells | 1 |
| Charge Current - Max | 950 mA |
| Charge Voltage | 4.2 V |
| 输入电压范围 | 4.25 V to 5.5 V |
| Number of Inputs | 2 (Wall Adapter, USB) |
| 工作温度范围 | -40°C to +85°C |
| 封装 / 外壳 | 10-WFDFN Exposed Pad (3x3 mm) |
| 安装类型 | Surface Mount |
| Packaging | Tape & Reel (TR) |
| Charge Termination | C/10, 10-hour timer |
| Charge Current Accuracy | ±5% |
| Charge Voltage Accuracy | ±1% |
| RoHS 状态 | Compliant |
| Number of Terminals | 10 |
LTC4096EDD#TRPBF 引脚配置
| 引脚 1 | CHRG — Charge status output (open-drain) |
| 引脚 2 | GND — Ground |
| 引脚 3 | PROG — Charge current programming pin |
| 引脚 4 | BAT — Battery connection |
| 引脚 5 | BAT — Battery connection |
| 引脚 6 | USB — USB input power |
| 引脚 7 | USB — USB input power |
| 引脚 8 | VCC — Wall adapter input power |
| 引脚 9 | VCC — Wall adapter input power |
| 引脚 10 | GND — Ground |
| 引脚 11 | Exposed Pad — Thermal pad, connect to ground |
典型应用
LTC4096EDD#TRPBF 适用于 6 应用s: Portable Electronics, IoT and Wearables, Medical Devices, Industrial Equipment, Consumer Audio, Smart Home Devices.
Portable Electronics
The LTC4096EDD#TRPBF is ideal for portable devices like smartphones, tablets, and digital cameras that require charging from both USB and wall adapters. Its dual-input capability with automatic source selection ensures seamless power management. The 950mA charge current and small DFN package fit space-constrained designs, while the linear topology minimizes EMI, making it suitable for noise-sensitive portable audio and medical devices. Designers can program the charge current to match battery capacity, and the CHRG status output simplifies user interface integration.
推荐
IoT and Wearables
For IoT sensors and wearable devices, the LTC4096EDD#TRPBF provides a compact, low-cost charging solution. Its 3x3 mm DFN package and minimal external components (only a few resistors and capacitors) reduce PCB area, critical for miniaturized designs. The device's low quiescent current and automatic input selection extend battery life by efficiently managing power from USB or energy harvesting sources. The 4.2V charge voltage is standard for Li-Polymer cells used in wearables, and the thermal regulation feature prevents overheating in tight enclosures.
推荐
Medical Devices
In handheld medical devices such as glucose monitors and portable diagnostic tools, reliable battery charging is critical. The LTC4096EDD#TRPBF offers a robust charging solution with ±1% charge voltage accuracy, ensuring battery safety and longevity. Its dual-input capability allows charging from both USB and a dedicated medical-grade wall adapter, providing flexibility in clinical settings. The device's industrial temperature range (-40°C to +85°C) and RoHS compliance meet medical equipment standards. The linear charging topology produces no switching noise, which is beneficial for sensitive analog measurement circuits.
推荐
Industrial Equipment
The LTC4096EDD#TRPBF is suitable for industrial handheld tools, barcode scanners, and portable test equipment that require charging from various power sources. Its wide input voltage range (4.25V to 5.5V) accommodates USB and industrial 5V supplies. The device's robust design includes overcurrent and overtemperature protection, ensuring reliable operation in harsh environments. The 10-hour charge termination timer and C/10 detection prevent overcharging, extending battery life. The small package allows integration into rugged, compact enclosures.
推荐
Consumer Audio
For Bluetooth speakers, headphones, and portable audio players, the LTC4096EDD#TRPBF provides clean, low-noise charging. The linear topology eliminates switching noise that could interfere with audio circuits. The dual-input capability allows charging from USB or a wall adapter, and the automatic source selection ensures the device charges from the most convenient source. The 950mA charge current enables fast charging for larger battery packs, while the CHRG output can drive an LED to indicate charging status. The small DFN package fits into sleek, compact audio products.
推荐
Smart Home Devices
Smart home devices like wireless sensors, smart locks, and security cameras often use rechargeable Li-Ion batteries. The LTC4096EDD#TRPBF offers a simple, reliable charging solution with minimal external components, making it easy to integrate into compact PCBs. Its dual-input capability allows charging from USB or a wall adapter, and the automatic power source selection ensures the device charges whenever power is available. The device's low standby current helps preserve battery life when not charging. The industrial temperature range ensures reliable operation in various home environments.
推荐
推荐产品汇总
工程参考数据： LTC4096EDD#TRPBF ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | LTC4096EDD#PBF | LTC4096XEDD#TRPBF | BQ24072RGTR | MAX1555EZK+T |
|---|---|---|---|---|---|
| Package | 10-WFDFN (3x3 mm) | 10-WFDFN (3x3 mm) | 10-WFDFN (3x3 mm) | 10-WFDFN (3x3 mm) | 10-WFDFN (3x3 mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Analog Devices |
| Max Charge Current | 950 mA | 950 mA | 950 mA | 1000 mA | 500 mA |
| Charge Voltage | 4.2V | 4.2V | 4.1V/4.2V selectable | 4.2V | 4.2V |
| Input Voltage Range | 4.25V to 5.5V | 4.25V to 5.5V | 4.25V to 5.5V | 4.5V to 6.5V | 4.5V to 6.5V |
| Number of Inputs | 2 | 2 | 2 | 2 | 2 |
| Charge Termination | C/10, 10-hour timer | C/10, 10-hour timer | C/10, 10-hour timer | C/10, timer | C/10, timer |
| Operating Temperature | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C |
关键差异点
- Dual-input with automatic power source selection （对比 BQ24072RGTR)
- No external sense resistor or blocking diode required （对比 MAX1555EZK+T)
- Higher charge current (950mA vs 500mA) （对比 MAX1555EZK+T)
设计说明
The LTC4096EDD#TRPBF is a linear charger, so power dissipation is significant at high charge currents. For example, at 5V input and 4.2V battery voltage, the dropout is 0.8V, resulting in 0.76W dissipation at 950mA. The 10-DFN package has a thermal resistance of approximately 40°C/W (theta_JA) with proper PCB copper. Ensure the exposed pad is soldered to a large ground plane to keep the junction temperature below 125°C. For high ambient temperatures, reduce the charge current or use a lower input voltage source.
Place the input capacitor (1uF ceramic) and output capacitor (4.7uF ceramic) as close as possible to the VCC and BAT pins, respectively. Use short, wide traces to minimize parasitic inductance. The PROG resistor should be placed near the PROG pin to avoid noise pickup. The exposed pad must be connected to the ground plane with multiple vias for effective heat dissipation. Follow the layout guidelines in the LTC4096/LTC4096X datasheet (4096xf.pdf) for optimal performance.
Do not exceed the absolute maximum input voltage of 6V on the VCC or USB pins. Ensure the battery is connected with correct polarity; reverse connection can damage the IC. The PROG pin must not be left floating; always connect a resistor to ground to set the charge current. When using the CHRG output to drive an LED, use a series resistor to limit current. Also, be aware that the device does not include a battery temperature sensing input; for applications requiring temperature monitoring, use an external thermistor circuit.
合规信息
RoHS compliant per distributor listings. AEC-Q100 not applicable for this non-automotive part. Other compliance data not explicitly stated in provided sources.
