NCP1835MN20R2 - 1A Single-Cell Li-Ion Charger | onsemi
料号： NCP1835MN20R2 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.5367 | $0.54 |
| 10 | $0.48 | $4.80 |
| 100 | $0.42 | $42.00 |
| 500 | $0.38 | $190.00 |
| 1,000 | $0.34 | $340.00 |
NCP1835MN20R2 概述
A linear lithium-ion charger is a power-management IC that converts source power into controlled battery charging energy. It belongs to the battery-management IC hierarchy, which supports portable electronics, mobile accessories, wearable devices, and compact battery-powered equipment. Unlike switching chargers, the NCP1835MN20R2 uses a simpler linear power path, making it useful where component count, control simplicity, and low board area matter.
The charger provides adjustable charge current, regulation capability without a connected battery, and onboard thermal foldback. Its low-input-voltage capability is useful for USB-powered systems and compact adapters. The exposed-pad DFN package helps dissipate heat when charging, although thermal performance depends on PCB copper area and the selected charge current.
According to the available manufacturer and distributor information, the NCP1835MN20R2 is identified as a 1 A maximum single-cell battery charger with a 4.2 V battery voltage and 10-DFN exposed-pad package. The ordering code includes the R2 tape-and-reel configuration, while the core electrical function remains a 1-cell Li-ion charger.
Typical applications include USB-powered phones, portable audio equipment, wearables, small sensor nodes, and compact industrial or consumer products with a single Li-ion cell. When selecting it, verify the source voltage, battery chemistry, charge-current requirement, thermal conditions, and pinout against the latest onsemi datasheet before production release.
For layout, place input and output capacitors close to the relevant pins and provide adequate exposed-pad copper for heat dissipation. Treat the listed distributor price as indicative and confirm current stock, lifecycle status, and authorized-channel availability before committing to a design.
直接替换替代料： NCP1835MN20R2 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
NCP1835MN20R2
✅ 直接替换✓ 有现货
$0.34 / 个
查看数据手册 →NCP1835MN25R2
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
NCP1835MN20T2
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
NCP1835MN20R2G
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
NCP1835MN20R2
✅ 直接替换✓ 有现货
$0.34 / 个
查看数据手册 →NCP1835MN20R2 规格参数
| Product Type | Integrated single-cell Li-ion battery charger |
| Maximum Charge Current | 1.0 A |
| Battery Charge Voltage | 4.2 V |
| Charging Profile | Constant-current, constant-voltage (CCCV) |
| Battery Cell Count | 1 cell |
| Charge Current Adjustability | Adjustable |
| Regulation Without Battery | Supported |
| Thermal Protection | Onboard thermal foldback |
| 封装 | 10-terminal DFN, 3 x 3 mm, exposed pad |
| 安装类型 | Surface mount |
| Marking Code | 1835+4200 |
| Manufacturer | onsemi |
| Battery Chemistry | Lithium-ion |
NCP1835MN20R2 10-terminal dfn, 3 x 3 mm, exposed pad 引脚配置指南
NCP1835MN20R2（10-terminal dfn, 3 x 3 mm, exposed pad 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： NCP1835MN20R2.
请参阅 数据手册 以查看完整引脚配置。
典型应用
NCP1835MN20R2 适用于 6 应用s: USB-Powered Mobile Accessories, Portable Audio Devices, Wearables and Smart Sensor Nodes, Battery-Powered Industrial Handhelds, Battery-Powered Measurement Instruments, Compact Consumer Electronics.
USB-Powered Mobile Accessories
The NCP1835MN20R2 fits compact USB-powered accessories that use a single 4.2 V Li-ion cell and need up to 1.0 A charging. Its integrated linear charger can simplify the power path while adjustable charge current lets the designer match the battery’s safe charging rate. The key design tradeoff is efficiency: linear dissipation rises as the difference between USB input voltage and battery voltage increases. Confirm the source current, input range, thermal conditions, and protection requirements before production.
推荐
Portable Audio Devices
For headphones, portable speakers, and small audio accessories, the NCP1835MN20R2 provides a compact single-cell Li-ion charging solution with a maximum current of 1.0 A. The 10-DFN exposed-pad package helps preserve board area, while regulation without a battery supports manufacturing and service checks. Designers should account for the charger’s thermal dissipation and ensure the battery protection, audio load transient behavior, and enclosure temperature are compatible.
推荐
Wearables and Smart Sensor Nodes
The NCP1835MN20R2 is suitable for compact wearables and wireless sensor nodes that use one rechargeable Li-ion cell. Its 3 x 3 mm exposed-pad DFN package leaves more board area for sensors, radios, and battery protection than a larger charger package. The adjustable current and CCCV operation support controlled charging, but designers must verify the source voltage, battery temperature, peak load, and low-power shutdown behavior against the final system architecture.
推荐
Battery-Powered Industrial Handhelds
The NCP1835MN20R2 can support single-cell charging in compact industrial handhelds and field-service devices. Its 1.0 A capability is useful for moderate-size batteries, while the exposed pad permits board-level heat spreading. The linear architecture may simplify EMI-sensitive designs, but enclosure temperature and charging time become important when the input source is limited. Validate battery qualification, charging at low temperature, fault response, and field reliability before deployment.
推荐
Battery-Powered Measurement Instruments
For portable measurement and instrumentation products, the NCP1835MN20R2 offers a small integrated charger for one Li-ion cell. Its compact DFN footprint is valuable when the battery, protection circuit, display, and analog circuitry share limited board space. Designers should select the charge current based on battery specifications and thermal limits rather than simply using the 1.0 A maximum. The charger’s behavior without a battery and thermal foldback should also be validated in the production test fixture.
推荐
Compact Consumer Electronics
The NCP1835MN20R2 is applicable to compact consumer products requiring integrated single-cell Li-ion charging, including small appliances, personal devices, and connected accessories. Its 10-DFN package supports dense layouts, while CCCV charging provides a familiar profile for standard 4.2 V cells. Before selecting it, confirm that the input source can supply the required current, that the battery includes appropriate protection, and that the system’s thermal environment keeps the charger within its intended operating limits.
推荐
推荐产品汇总
工程参考数据： NCP1835MN20R2 ——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 | NCP1835MN20R2 | NCP1835MN25R2 | NCP1835MN20T2 | NCP1835MN20R2G |
|---|---|---|---|---|---|
| Package | 10-DFN (3x3), exposed pad | 10-DFN (3x3), exposed pad | 10-DFN (3x3), exposed pad | 10-DFN (3x3), exposed pad | 10-DFN (3x3), exposed pad |
| Brand | onsemi | onsemi | onsemi | onsemi | onsemi |
关键差异点
- Single-cell 4.2 V charging in a compact exposed-pad package （对比 LTC4162EUFD-L42)
- Regulation without a connected battery （对比 MAX33040EAKA+)
- Onboard thermal foldback （对比 LTC4162EUFD-L42)
设计说明
Estimated: power dissipation in a linear charger is approximately P = (VIN - VBAT) x ICHARGE before accounting for charger efficiency. At 5 V input, 4.2 V battery, and 1.0 A charge current, the ideal first-order loss is about 0.8 W; actual loss and temperature rise depend on the topology and package thermal resistance. Use the exposed-pad copper area specified by onsemi and verify temperature at the highest expected input voltage and ambient condition.
Place the input capacitor and battery-side components close to their associated pins, and connect the exposed pad to a properly sized thermal copper plane with minimal impedance. Keep high-current charge paths short and wide, maintain clean return-current routing, and follow the manufacturer’s recommended land pattern. Because the complete pin names and numbers are not present in the supplied verified data, verify them in the current datasheet before fabrication.
Do not select the 1.0 A maximum as the default charge current without checking the cell’s specified maximum charge rate, thermal limits, and protection circuitry. A lower programmed current may be appropriate for small wearables or constrained USB sources. Also account for the input-source current limit, cable losses, startup surge, and the possibility that the system load remains connected while charging.
Avoid treating the NCP1835MN20R2 as a universal Li-ion replacement. The verified data supports a single-cell 4.2 V CCCV charger with 1.0 A maximum current, adjustable current, regulation without a battery, and thermal foldback. Before substituting another charger, compare exact pinout, input voltage, charge termination, battery-temperature behavior, enable polarity, exposed-pad connection, and fault handling.
合规信息
Compliance status was not explicitly provided in the verified web results. Obtain current onsemi material and environmental declarations before making a compliance claim.
