Overview
The LP2951-33DR is a low-dropout voltage regulator (LDO) that provides a stable 3.3V output voltage. It is designed for applications requiring precise voltage regulation with minimal power loss. The device is particularly suitable for battery-powered systems due to its low quiescent current and efficient performance. The LP2951-33DR is part of a family of voltage regulators known for their reliability and robustness. It is commonly used in industrial controls, automotive electronics, and portable consumer devices where consistent voltage supply is critical.
Structure and Working Principle
The LP2951-33DR integrates a reference voltage source, error amplifier, and pass transistor to regulate the output voltage. The error amplifier compares the output voltage to the reference and adjusts the pass transistor to maintain the desired 3.3V output. This LDO operates with a low dropout voltage, meaning it can maintain regulation even when the input voltage is only slightly higher than the output voltage. This feature is particularly beneficial in battery-operated devices where input voltage may vary significantly.
Key Features
One of the standout features of the LP2951-33DR is its low dropout voltage, typically around 380mV at 100mA load current. This allows the regulator to operate efficiently even when the input voltage is close to the output voltage. Additionally, the device offers low quiescent current (typically 75µA), making it ideal for power-sensitive applications. It also includes built-in protection features such as thermal shutdown and current limiting to ensure safe operation under various conditions.
Application Areas
The LP2951-33DR is widely used in applications requiring stable 3.3V power supply. Common uses include microcontroller power supplies, sensor modules, and wireless communication devices. In industrial settings, this regulator is often found in control systems and instrumentation. Automotive applications include infotainment systems and electronic control units (ECUs). Consumer electronics such as portable medical devices and handheld gadgets also benefit from its reliable performance.
Maintenance and Precautions
To ensure optimal performance, the LP2951-33DR should be operated within its specified voltage and temperature ranges. Exceeding these limits can lead to device failure or reduced lifespan. Proper heat dissipation is crucial, especially in high-current applications. Using appropriate PCB layout techniques and thermal vias can help manage heat effectively. Always refer to the manufacturer's datasheet for detailed operating conditions and application notes.
B2B Procurement Guide
When procuring LP2951-33DR in bulk, consider factors such as lead time, supplier reliability, and pricing tiers. It's advisable to source from authorized distributors to ensure authenticity and quality. For large-scale projects, requesting samples for testing is recommended. Additionally, verify the packaging (tape and reel, tube, or bulk) to ensure compatibility with your assembly process. Price negotiations are often possible for high-volume orders.
Related Manufacturers
- 主营：ADI、嵌入式FPGA、赛灵思、Xilinx
- 主营：二极管、spx3819m5-l-1-2
- 主营：芯片IC、电源IC、MOS管、二极管、三极管、单片机、继电器、模块、连接器、滤波器、传感器、BOM配单
- 主营：电子元器件、集成电路、芯片
- 主营：集成电路、FPGA可编程门阵列、嵌入式处理器和控制器、NAND闪存 内存、无线射频器、电源IC
- 主营：开发板、lmv324idr、mmst2907a、stth6010w、lm5576mhx、lmh0387sl、lmv344ipw、log112aid、stps5l60s、lmh6642mf、stps3l60s、lmh7220mg、lmv321m7x、lm5117psq、lmv358qpw、lmv116mfx、stps0560z、sm6t100ca
- 主营：集成电路芯片、特殊逻辑IC、模块 风扇 连接器 开关
- 主营：max515esa、max308epe、imp705cua、板贴片、m451vg6ae、pcb主板、m482kidae、epc8qi100、hdla-1414、db255ac-2、tcd1209dg、m452rg6ae、保险丝、saa7135hl、fsa2367mt、opa2350ua、imp803ima、tfp410pap、hdlg-1414、hfp50onog、stspin233、cy203810c、sh71302ld、tps2042ad、cy2308sxc
- 主营：sn74121dr、lm3526m-l、ina2132ua、lm6152acmx、lm3526mx-l、pcm1796dbr、tlc7225idwr、tlc5971rger、lm385mx-1.2、lmp8601qmax、opa1604aipwr、ina213aidckr、tpa2006d1drbr、lm4871mx/nopb、msp430f5438ipzr、lm22677tj-adj/nopb
- 主营：TE、TI、连接器、电容、MCU、dc-dc、模块、集成电路IC、ST
- 主营：st1s14phr、sy7203dbc、stps2150a、sy8843qwc、ft230xq-r、ad536ajdz、存储器、st1s10pur、hv582ga-g、max485csa、ikw75n60t、sy8502fcc、ds3231mz+、syr838pkc、ob2535cpa、连接器、mc4558idt、sy8204fcc、ob2203cpa、2edn7524r、微电子、ob2225ncp、lis2mdltr、fpf2700mx、zlls350ta
- 主营：集成电路、德州仪器TI、主动元器件、连接器、传感器、IC、存储芯片、电源管理、美光Micron、欧姆龙OMRON、安费诺宝西、普冉Puya、英集芯INJOINC、京瓷KYOCERA、海力士、Honeywell、Amphenol、金士顿、威刚、ISSI芯成半导体、意法半导体ST、亚德诺ADI、三菱、英飞凌、华邦
- 主营：smaj6.0ca、hef4040bt、ld7750rgr、gl850g-37、锂电池、stn1hnk60、hef4046bt、sy7201abc、fds4435bz、nce60p04y、aw8145csr、ika15n60t、iso7721dr、stp20nm60、nce01p13k、hef4081bt、lm3150mhx、sy7203dbc、max485esa、irf840pbf、fdms6681z、1318183-1、max660esa、bq32000dr、74hc123pw
- 主营：tlc7135cn、aoz1051pi、bq26200pw、rt8020gqw、ad8551arz、fin1019mx、ad9631anz、iso7421dr、bza856avl、es6430faa、wm8759ged、rtl8305sc、ad8029arz、ec2-4.5nd、tps659039、tea1532at、max400csa、adg719brm、iw1812-20、adxl103ce、axt532124、adr421arz、bzv55-c75、sn74f10dr、isp1102bs
- 主营：kf25bd-tr、bu941zpfi、mpxm2053d、恩智浦、开发板、sn74hc05d、欧姆龙、西铁城、hhm2915a2、放大器、传感器、电子管、计数器、冲电气、amd超微、ns/国半、d10aa20z4、控制器、编程器、海力士、stps1l30a、连接器、比特利、mpx5050dp、freescale