- Pinout Diagram
- Footprint Diagram
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EDA ModelsEasyEDA
TI LM5155DSSR
| Manufacturer | |
| MPN | LM5155DSSR |
| LCSC Part # | C545416 |
| Packaging | WSON-12-EP(2x3) |
| Customer # | |
| Key Attributes | Wide-input Asynchronous Boost, SEPIC, Flyback Controllers |
| Datasheet |  TI LM5155DSSR |
Products Specifications
Show similar products (0) >| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers | |
| Manufacturer | TI | |
| Packaging | WSON-12-EP(2x3) | |
| Operating Temperature | -40℃~+125℃@(TJ) | |
| Synchronous Rectifier | No | |
| Features | Cycle-by-cycle current limiting;Hiccup current limiting;Adjustable soft-start;Frequency synchronization;Operating status indication;Overcurrent Protection | |
| Output Current | 1.5A | |
| Number of Channels | 1 | |
| Topology | Boost;SEPIC;Flyback | |
| Frequency - Switching | 2.2MHz | |
| Operating Voltage | 3.5V~45V | |
| Output Voltage | - | |
| Function | Boost | |
| Quiescent Current | 480uA |
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Additional Information
| Type | Details |
|---|---|
| Minimum | 1 |
| Multiple | 1 |
| Standard Packaging | 3000 |
| Sales Unit | Piece |
| EDA Models | EasyEDA Model |
Introduction
AI Translation
LM5155x（LM5155 和 LM51551）是一款采用峰值电流模式控制的宽输入范围非同步升压控制器。该器件可用于升压、SEPIC 和反激式拓扑。 如果 BIAS 引脚连接到 VCC 引脚，则 LM5155x 可由单节电池（最低电压 2.97V）供电。如果 BIAS 引脚电压高于 3.5V，则该器件可使用低至 1.5V 的输入电源电压。 内部 VCC 稳压器还支持 BIAS 引脚工作电压高达 45 V（绝对最大值 50 V）。开关频率可通过外部电阻动态编程，范围为 100 kHz 至 2.2 MHz。在 2.2 MHz 下开关可最大程度降低 AM 频段干扰，并实现小型化方案尺寸和快速瞬态响应。 该器件配备 1.5 A 标准 MOSFET 驱动器，电流限制阈值低至 100 mV。该器件还支持使用外部 VCC 电源以提高效率。低工作电流和跳脉冲工作模式可在轻载时提升效率。 该器件内置多种保护功能，包括逐周期电流限制、过压保护、线路 UVLO 和热关断。LM51551 器件选项支持打嗝模式过载保护。其他功能包括低关断 IQ、可编程软启动、可编程斜率补偿、精密基准、电源正常指示器和外部时钟同步。
Features
AI Translation
- Functional safety support with documentation for functional safety system design; wide input operating range for battery applications
- 3.5V to 45V operating range; 2.97V to 16V when BIAS = VCC
- Minimum boost supply voltage of 1.5V when BIAS voltage ≥ 3.5V
- Input transient protection up to 50V
- Minimum battery drain with low shutdown current (IQ ≤ 2.6μA)
- Low operating current (IQ ≤ 480μA)
- Small solution size and low cost
- Maximum switching frequency of 2.2MHz
- 12-pin WSON package (3mm×2mm)
- Integrated error amplifier for primary-side regulation (flyback) without optocoupler
- Minimized undershoot during startup (start/stop applications)
- Low power consumption, high efficiency
- 100mV ±7% low current limit threshold
- Robust 1.5A peak standard MOSFET driver
- External VCC supply support
- Avoids AM band interference and crosstalk; optional clock synchronization; dynamically programmable switching frequency from 100kHz to 2.2MHz
- Integrated protection features
- Constant peak current limit across input voltage range
- Optional discontinuous mode short-circuit protection
- Programmable line UVLO
- OVP protection
- Thermal shutdown protection
- Precise ±1% accuracy feedback reference
- Programmable additional slope compensation
- Adjustable soft-start
- PGOOD indicator
- Create custom designs with LM5155x using WEBENCH Power Designer
Applications
AI Translation
- Multi-output flyback applications without optocoupler
- LED bias power supply
- Wide-input boost, SEPIC, and flyback power modules
- Portable speaker applications
- Battery-powered boost, SEPIC, and flyback applications
In-Stock: 3,900
3,900 In stock, ships now
Add to BOM List
| Qty | Unit Price | Total Amount |
|---|---|---|
| 1+ | $ 1.5411 | $ 1.54 |
| 10+ | $ 1.3168 | $ 13.17 |
| 30+ | $ 1.1933 | $ 35.80 |
| 100+ | $ 1.0535 | $ 105.35 |
| 500+ | $ 0.9917 | $ 495.85 |
| 1,000+ | $ 0.9641 | $ 964.10 |
Standard Packaging3000/Full Reel | ||
Better price for more quantity?
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Products Specifications
Show similar products (0) >| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers | |
| Manufacturer | TI | |
| Packaging | WSON-12-EP(2x3) | |
| Operating Temperature | -40℃~+125℃@(TJ) | |
| Synchronous Rectifier | No | |
| Features | Cycle-by-cycle current limiting;Hiccup current limiting;Adjustable soft-start;Frequency synchronization;Operating status indication;Overcurrent Protection | |
| Output Current | 1.5A | |
| Number of Channels | 1 | |
| Topology | Boost;SEPIC;Flyback | |
| Frequency - Switching | 2.2MHz | |
| Operating Voltage | 3.5V~45V | |
| Output Voltage | - | |
| Function | Boost | |
| Quiescent Current | 480uA |
Report an ErrorShow similar products (0) >
Additional Information
| Type | Details |
|---|---|
| Minimum | 1 |
| Multiple | 1 |
| Standard Packaging | 3000 |
| Sales Unit | Piece |
| EDA Models | EasyEDA Model |
Introduction
AI Translation
LM5155x（LM5155 和 LM51551）是一款采用峰值电流模式控制的宽输入范围非同步升压控制器。该器件可用于升压、SEPIC 和反激式拓扑。 如果 BIAS 引脚连接到 VCC 引脚，则 LM5155x 可由单节电池（最低电压 2.97V）供电。如果 BIAS 引脚电压高于 3.5V，则该器件可使用低至 1.5V 的输入电源电压。 内部 VCC 稳压器还支持 BIAS 引脚工作电压高达 45 V（绝对最大值 50 V）。开关频率可通过外部电阻动态编程，范围为 100 kHz 至 2.2 MHz。在 2.2 MHz 下开关可最大程度降低 AM 频段干扰，并实现小型化方案尺寸和快速瞬态响应。 该器件配备 1.5 A 标准 MOSFET 驱动器，电流限制阈值低至 100 mV。该器件还支持使用外部 VCC 电源以提高效率。低工作电流和跳脉冲工作模式可在轻载时提升效率。 该器件内置多种保护功能，包括逐周期电流限制、过压保护、线路 UVLO 和热关断。LM51551 器件选项支持打嗝模式过载保护。其他功能包括低关断 IQ、可编程软启动、可编程斜率补偿、精密基准、电源正常指示器和外部时钟同步。
Features
AI Translation
- Functional safety support with documentation for functional safety system design; wide input operating range for battery applications
- 3.5V to 45V operating range; 2.97V to 16V when BIAS = VCC
- Minimum boost supply voltage of 1.5V when BIAS voltage ≥ 3.5V
- Input transient protection up to 50V
- Minimum battery drain with low shutdown current (IQ ≤ 2.6μA)
- Low operating current (IQ ≤ 480μA)
- Small solution size and low cost
- Maximum switching frequency of 2.2MHz
- 12-pin WSON package (3mm×2mm)
- Integrated error amplifier for primary-side regulation (flyback) without optocoupler
- Minimized undershoot during startup (start/stop applications)
- Low power consumption, high efficiency
- 100mV ±7% low current limit threshold
- Robust 1.5A peak standard MOSFET driver
- External VCC supply support
- Avoids AM band interference and crosstalk; optional clock synchronization; dynamically programmable switching frequency from 100kHz to 2.2MHz
- Integrated protection features
- Constant peak current limit across input voltage range
- Optional discontinuous mode short-circuit protection
- Programmable line UVLO
- OVP protection
- Thermal shutdown protection
- Precise ±1% accuracy feedback reference
- Programmable additional slope compensation
- Adjustable soft-start
- PGOOD indicator
- Create custom designs with LM5155x using WEBENCH Power Designer
Applications
AI Translation
- Multi-output flyback applications without optocoupler
- LED bias power supply
- Wide-input boost, SEPIC, and flyback power modules
- Portable speaker applications
- Battery-powered boost, SEPIC, and flyback applications
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
| Type | Details |
|---|---|
| RoHS | |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |