LTC4100EG#PBF - 4A Smart Battery Charger IC | Analog Devices
MPN： LTC4100EG#PBF ✓ 啟用中LTC4100EG#PBF 概覽
A smart battery charger controller manages the charging interface between a power supply, a rechargeable battery pack, and a host system. Rather than operating as a simple fixed-current charger, this class of device supports negotiated battery information, safety monitoring, and programmable charging behavior. The LTC4100 integrates SMBus communication and monitors the battery SafetySignal for temperature, connectivity, and battery-type information, helping the host coordinate charging according to pack requirements.
The device is programmed by the battery or host and implements a Level 2 charger function. Its charging current is programmable, while overcurrent protection, overvoltage protection, and under-voltage lockout provide basic system safeguards. The 24-pin SSOP package integrates the charger-control functions into a compact footprint for portable equipment, test systems, embedded instruments, and industrial battery-powered products. The controller is suitable for one-cell chemistries where the charge voltage and system voltage must be coordinated by the SBS battery interface.
Technically, the LTC4100 is designed for systems where the battery pack carries intelligence rather than serving as a passive two-terminal cell. The SMBus interface allows a host or charger to exchange operating information with the pack, while the SafetySignal input provides battery status and fault information to the charger. The controller therefore acts as the central coordinator between the power stage and the intelligent battery, rather than directly replacing the external current regulator or high-current switching stage.
Typical applications include portable battery-powered test equipment, embedded computing platforms, handheld industrial tools, and compact SBS-compatible power systems. In these systems, the LTC4100 can be paired with a host controller and an external power path to create a charger that adapts to the battery pack. The device is particularly useful when developers need a standardized smart-battery interface rather than a standalone linear or switching charger.
Designers should verify the external power-stage topology, sense components, current capability, and pack-specific limits against the manufacturer datasheet before production. The controller's programming and SafetySignal behavior must be matched to the battery chemistry and host software. Because this is a charger controller, its charging performance also depends on the external regulator, current-sense network, and system-level thermal design. This page consolidates verified distributor information, technical context, and design guidance for engineers evaluating the LTC4100EG#PBF.
直接替換替代品，適用於 LTC4100EG#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： LTC4100EG#PBF （相同外形與佔位） — 差異在於 Operating Temperature, Battery Chemistry, Charger Topology, Interface, Maximum Charge Current.
LTC4100EG
✅ 直接替換聯絡詢價
查看資料表 →LTC4100EG#TRPBF
✅ 直接替換聯絡詢價
查看資料表 →LTC4100EG#PBF 規格
| Product Type | Smart Battery Charger Controller |
| Maximum Charge Current | 4 A |
| Input Voltage | 28 V |
| Battery Charge Voltage | 12 V |
| Series Cell Count | 1 |
| Supported Battery Chemistries | Li-Ion, Li-Polymer, NiCd, NiMH |
| Charger Function | Level 2 charger function |
| Communication Interface | SMBus |
| Programming | Programmable by battery or host |
| SafetySignal Monitoring | Temperature, connectivity, and battery-type information |
| 過電流保護 | Supported |
| Overvoltage Protection | Supported |
| Under-Voltage Lockout | Supported |
| 封裝 | 24-pin SSOP |
| 安裝類型 | Surface Mount |
| 工作溫度 | 0°C to 70°C guaranteed performance; -40°C to 85°C assured by design |
| Lead-Free Status | Lead-free PBF |
LTC4100EG#PBF 24-pin ssop 腳位配置指南
LTC4100EG#PBF（24-pin ssop 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： LTC4100EG#PBF.
請參閱 資料表 以查看完整腳位配置。
典型應用
LTC4100EG#PBF 適用於 6 應用s: SBS Smart Battery Charging, Portable Test and Measurement Equipment, Embedded Battery-Powered Platforms, Industrial Handheld Tools, Battery-Powered Data Acquisition Systems, Robust Battery Power Paths.
SBS Smart Battery Charging
The LTC4100EG#PBF fits SBS-compliant portable systems because it coordinates charging between an intelligent battery and a host through SMBus. Its programmable charging function and SafetySignal monitoring allow the system to account for pack temperature, connectivity, and battery-type information. The 4 A controller rating supports higher-current designs, while the 24-pin SSOP keeps the control function compact. Because the IC is a controller, the design still needs an external charging power stage and protection network.
推薦
Portable Test and Measurement Equipment
Handheld analyzers, meters, and portable laboratory instruments can use the LTC4100EG#PBF when they employ an intelligent battery pack and need deterministic host-controlled charging. The SMBus interface supports communication with the battery, while overcurrent, overvoltage, and under-voltage lockout features help define safe operating states. The 28 V input rating and 4 A maximum charge current provide headroom for a protected system architecture.
推薦
Embedded Battery-Powered Platforms
Embedded controllers, industrial handhelds, and compact computing modules can use the LTC4100EG#PBF when the power architecture is based on a one-cell intelligent pack. The host-programmable charger reduces hardwired assumptions about battery behavior, while the SafetySignal input supports pack monitoring. The SSOP package is useful for space-constrained designs, although careful placement and external power-stage layout remain important.
推薦
Industrial Handheld Tools
Portable instruments and industrial tools benefit from the LTC4100EG#PBF when they need a standardized smart-battery charging interface. The controller can be programmed by the host or battery, helping the tool adapt charging behavior to pack information and operating conditions. Its protection features support a robust power path, while the 24-SSOP footprint supports compact board layouts. Validate the maximum charging current against the tool's thermal and battery requirements.
推薦
Battery-Powered Data Acquisition Systems
Field data loggers and portable acquisition systems can use the LTC4100EG#PBF when they use an SBS-capable battery and need host-controlled charging. SMBus communication allows the system controller to exchange information with the pack, while SafetySignal monitoring provides temperature and connectivity awareness. The controller's 12 V battery charge-voltage specification must be matched to the selected pack chemistry and system requirements.
推薦
Robust Battery Power Paths
The LTC4100EG#PBF is appropriate for systems requiring coordinated charging, fault handling, and battery status exchange rather than a simple fixed-current supply. Overcurrent protection, overvoltage protection, and under-voltage lockout provide useful baseline safeguards, while host programmability supports controlled charge profiles. The external regulator, current-sense resistor, switching components, and thermal solution must be selected independently to achieve the required system performance.
推薦
推薦產品摘要
工程參考資料，適用於 LTC4100EG#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 | LTC4100EG | LTC4100EG#TRPBF |
|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices |
| Package | 24-SSOP | 24-SSOP | 24-SSOP |
主要差異化特點
- Smart-battery-aware charging control (對比LTC4100EG)
- Integrated charging protections (對比LTC4100EG#TRPBF)
- Charge-current capability (對比LTC4100EG)
設計說明
Treat the LTC4100EG#PBF as the control element in a charger power path, not as a complete regulator. Select the external input stage and charging pass devices for the required 28 V input condition and the battery's allowed charge voltage. Estimated system dissipation should be calculated from the actual external power-stage drop and current rather than from the controller's 4 A rating alone.
Place the LTC4100EG#PBF, SMBus pull-up network, current-sense components, and associated protection parts close to their associated power-stage nodes. Follow the manufacturer recommended SSOP land pattern and keep high-current switching paths away from sensitive communication and sensing traces. Confirm all pin functions against the official datasheet before layout release.
Do not assume that a 4 A controller specification guarantees a 4 A safe charging condition. The battery chemistry, pack temperature, cell voltage, host programming, external regulator, current-sense network, and thermal limits all constrain the usable charge current. Validate the complete fault path for overcurrent, overvoltage, under-voltage lockout, and SafetySignal events.
The controller package and external charging stage should be evaluated across maximum input voltage, battery voltage, charge current, and ambient temperature. The LTC4100EG#PBF's package is 24-pin SSOP, so copper area and exposed thermal behavior depend on the PCB design and external power components. Use the manufacturer datasheet for temperature limits and perform system-level thermal verification rather than relying on the controller alone.
合規資訊
The #PBF ordering suffix and distributor identification indicate a lead-free part. The supplied data does not provide verified RoHS, REACH, halogen-free, or conflict-minerals statements. AEC-Q100 is not identified for this device.
