LTC4096EDD#PBF - Dual Input Li-Ion Charger | Analog Devices
MPN： LTC4096EDD#PBF ✓ 啟用中LTC4096EDD#PBF 概覽
A battery charger is a power management IC that controls the charging process of rechargeable batteries, ensuring safe and efficient charging. The LTC4096EDD#PBF is a linear charger, meaning it uses a linear regulator to control the charge current, which is simple and low-noise but dissipates more power at higher input voltages. It is part of the broader power management IC hierarchy, specifically within battery management and charging solutions.
Key features include a programmable charge current up to 1.2A (as per chipdig.com), a battery charge voltage of 4.2V, and an input voltage range up to 5.5V. The device operates over a temperature range of -40°C to 85°C, ensuring reliability in industrial and consumer environments. The dual-input capability allows simultaneous connection to both wall adapter and USB, with automatic power source selection.
The LTC4096EDD#PBF integrates a precision voltage reference and current sensing circuitry, providing accurate charge termination. It includes safety features such as thermal regulation and charge status outputs. The DFN package offers excellent thermal performance, with an exposed pad for heat dissipation.
Typical applications include cellular phones, MP3 players, and other portable devices that require charging from both USB and wall adapters. The device's small footprint and low external component count make it suitable for compact designs.
When designing with this charger, ensure proper PCB layout with adequate copper area for the exposed pad to manage heat dissipation, especially at high charge currents. Also, consider the input voltage headroom to avoid excessive power dissipation.
直接替換替代品，適用於 LTC4096EDD#PBF — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LTC4096EDD#PBF （相同外形與佔位） — 差異在於 Charge Termination, Operating Temperature Range.
LTC4096XEDD#PBF
✅ 直接替換📋 參考替代品（不在目錄中）
LTC4096EDD#TRPBF
✅ 直接替換聯絡詢價
查看資料表 →BQ24072
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
BQ24073
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MAX1555
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LTC4096EDD#PBF 規格
| Battery Type | Li-Ion, Li-Polymer |
| Number of Series Cells | 1 |
| Input Voltage (Max) | 5.5 V |
| Battery Charge Voltage | 4.2 V |
| Charge Current (Max) | 1.2 A |
| Number of Inputs | 2 (Wall Adapter, USB) |
| 封裝 | 10-DFN (3x3 mm) |
| 工作溫度範圍 | -40°C to 85°C |
| 安裝類型 | Surface Mount |
| 腳位數 | 10 |
| Charge Termination | Programmable |
| Internal MOSFET | Yes |
| Automatic Power Source Selection | Yes |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
LTC4096EDD#PBF 腳位配置
| 腳位 1 | VCC — Wall adapter input supply |
| 腳位 2 | USB — USB input supply |
| 腳位 3 | BAT — Battery connection |
| 腳位 4 | PROG — Charge current programming |
| 腳位 5 | GND — Ground |
| 腳位 6 | CHRG — Charge status output |
| 腳位 7 | FAULT — Fault status output |
| 腳位 8 | NTC — Temperature sense input |
| 腳位 9 | EN — Enable input |
| 腳位 10 | GND — Ground (exposed pad) |
典型應用
LTC4096EDD#PBF 適用於 6 應用s: Cellular Phones, MP3 Players, Portable Medical Devices, Industrial Handheld Terminals, Smart Wearables, IoT Devices.
Cellular Phones
The LTC4096EDD#PBF is ideal for cellular phones that require charging from both wall adapter and USB inputs. Its dual-input capability allows automatic power source selection, ensuring the phone charges from the available source. The programmable charge current up to 1.2A supports fast charging of typical phone batteries. The compact 10-DFN package fits into space-constrained phone designs, and the internal MOSFET eliminates the need for external blocking diodes, reducing component count and board space.
推薦
MP3 Players
MP3 players benefit from the LTC4096EDD#PBF's small size and low external component count. The device can charge a single Li-Ion battery from a USB port or a wall adapter, making it convenient for users. The charge current is programmable, allowing designers to optimize for battery capacity and charging time. The thermal regulation feature prevents overheating during charging, ensuring safety in compact enclosures. The -40°C to 85°C operating range ensures reliable performance in various environments.
推薦
Portable Medical Devices
In portable medical devices, reliable battery charging is critical. The LTC4096EDD#PBF provides a regulated 4.2V charge voltage and programmable current, ensuring safe charging of Li-Ion batteries. Its dual-input capability allows charging from both USB and wall adapters, which is useful in clinical settings. The industrial temperature range and robust design make it suitable for medical equipment that must operate reliably. The small DFN package is ideal for wearable and handheld medical devices.
推薦
Industrial Handheld Terminals
Industrial handheld terminals require rugged and reliable battery charging. The LTC4096EDD#PBF operates over -40°C to 85°C, making it suitable for harsh industrial environments. Its dual-input capability allows charging from both USB and wall adapters, providing flexibility in the field. The programmable charge current enables optimization for different battery capacities. The internal MOSFET and automatic power source selection simplify the design, reducing component count and improving reliability.
推薦
Smart Wearables
Smart wearables like smartwatches and fitness trackers demand compact, low-power charging solutions. The LTC4096EDD#PBF's 10-DFN (3x3 mm) package is ideal for space-constrained designs. It charges a single Li-Ion battery from USB or a wall adapter, with automatic source selection. The programmable charge current allows designers to match the battery's safe charging rate. The device's low external component count simplifies the PCB layout, which is crucial for miniaturized wearables.
推薦
IoT Devices
IoT devices often rely on battery power and need efficient charging from USB or other sources. The LTC4096EDD#PBF provides a simple, reliable charging solution with its dual-input capability and automatic power source selection. The programmable charge current allows optimization for small batteries used in IoT sensors. The device's low quiescent current and thermal regulation ensure safe operation in always-on devices. The compact package is suitable for PCB designs with limited space.
推薦
推薦產品摘要
工程參考資料，適用於 LTC4096EDD#PBF — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LTC4096XEDD#PBF | LTC4096EDD#TRPBF | BQ24072 | BQ24073 | MAX1555 |
|---|---|---|---|---|---|---|
| Package | 10-DFN (3x3 mm) | 10-DFN (3x3 mm) - same | 10-DFN (3x3 mm) - same | 10-DFN (3x3 mm) - same | 10-DFN (3x3 mm) - same | 10-DFN (3x3 mm) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Texas Instruments | Maxim Integrated |
| Max Charge Current | 1.2 A | 1.2 A (different programming) | 1.2 A | 1 A | 1 A | 0.5 A |
| Input Voltage (Max) | 5.5 V | 5.5 V | 5.5 V | 6.5 V | 6.5 V | 7 V |
| Battery Charge Voltage | 4.2 V | 4.2 V | 4.2 V | 4.2 V | 4.2 V | 4.2 V |
| Number of Inputs | 2 | 2 | 2 | 2 | 2 | 2 |
| Operating Temperature Range | -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 | -40°C to 85°C |
| Charge Termination | Programmable | Programmable | Programmable | Fixed | Fixed | Fixed |
主要差異化特點
- Dual-input with automatic power source selection (對比BQ24072)
- Programmable charge current up to 1.2A (對比MAX1555)
- Internal MOSFET eliminates external blocking diode (對比BQ24073)
設計說明
The LTC4096EDD#PBF is a linear charger, so power dissipation is proportional to the voltage drop across the internal MOSFET. At 5V input and 4.2V battery voltage, the drop is 0.8V, and at 1.2A charge current, dissipation is approximately 0.96W. The 10-DFN package has an exposed pad that must be soldered to a copper area on the PCB to dissipate heat. Ensure adequate copper pour and thermal vias to keep the junction temperature within limits.
Place the input and output capacitors close to the VCC, USB, and BAT pins to minimize parasitic inductance. Use a 1uF ceramic capacitor on each input and a 10uF capacitor on the battery output. The PROG pin resistor should be placed near the IC to reduce noise. The exposed pad should be connected to ground with multiple vias for thermal and electrical performance.
Do not exceed the maximum input voltage of 5.5V on either input. Ensure the PROG resistor is correctly sized for the desired charge current; an incorrect value can lead to overcharging or slow charging. The NTC pin, if used, requires a 10k NTC thermistor to monitor battery temperature; if not used, connect it to ground. Also, verify the charge status outputs (CHRG, FAULT) are properly pulled up if used.
合規資訊
RoHS compliant per Analog Devices product page. Lead-free as indicated by #PBF suffix. AEC-Q100 not applicable for this non-automotive part.
