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LP2996 SIMPLE SWITCHER® 3A Step-Down Voltage Regulator

LP2996 特性Features
LP2996 概述Description

LP2996线性稳压器符合面向DDR-SDRAM终端的JEDEC SSTL-2标准。该器件搭载一个高速运算放大器,提供卓越的负载瞬态响应。输出级能够在防止击穿的同时为应用提供DDR-SDRAM终端需要的1.5A持续电流和最高至3A的峰值电流。LP2996还搭载了提供卓越负载调整的VSENSE引脚以及面向芯片组和 DIMM的输出电压基准。

LP2996的另外一个特性是其活动的低断开(SD#)引脚,可以提供挂起到内存(STR)功能。当SD#被拉低时,VTT输出将为三态,提供一个高阻抗输出,但是,VREF 仍将保持激活状态。在这个模式中,通过较低的静态电流,可以获得节能的优势。

LP2996 应用Applications

LP2996 典型性能Typica Performance

LP2996 典型性能Typical Application

LP2996 功能框图Block Diagram

LP2996 功能框图Block Diagram

LP2996 功能框图Block Diagram

LP2996 典型性能Typical Performance
LM2996 性能参数Parametrics
Paramaters / Values LP2996 LM25005 LM25576 LM2673 LM2676 LM2696 LM5005 LM2596 LM2599
Output Current 3000 mA 2500 mA 3000 mA 3000 mA 3000 mA 3000 mA 2500 mA 3000 mA 3000 mA
Input Min Voltage 4 Volt 7 Volt 6 Volt 15, 8 Volt 15, 8 Volt 4.5 Volt 7 Volt 4.5, 7, 4.75, 15 Volt 4.5, 7, 4.75, 15 Volt
Input Max Voltage 40 Volt 42 Volt 42 Volt 40 Volt 40 Volt 24 Volt 75 Volt 40 Volt 40 Volt
Output Min 3.3, 1.23, 12, 15, 5 Volt 1.23 Volt 1.23 Volt 3.3, 1.23, 12, 5 Volt 3.3, 1.23, 12, 5 Volt 1.254 Volt 1.23 Volt 3.3, 1.23, 12, 5 Volt 3.3, 1.23, 12, 5 Volt
Output Max 3.3, 37, 12, 15, 5 Volt 37 Volt 40 Volt 3.3, 12, 37, 5 Volt 3.3, 12, 37, 5 Volt 20 Volt 70 Volt 3.3, 37, 12, 5 Volt 3.3, 37, 12, 5 Volt
Frequency Min 52 kHz 50 kHz 50 kHz 260 kHz 260 kHz 100 kHz 50 kHz 150 kHz 150 kHz
Frequency Max 52 kHz 500 kHz 1000 kHz 260 kHz 260 kHz 500 kHz 500 kHz 150 kHz 150 kHz
Efficiency (peak) 77, 88, 75 % 94 % 91 % 94, 88, 86 % 94, 88, 86 % 90 % 94 % 90, 73, 80 % 90 %
On/Off Pin Yes Yes Yes No Yes Yes Yes Yes Yes
PowerGood / Error Flag No No No No No Yes No No Yes
SoftStart No Yes Yes Yes No Yes Yes No Yes
Sync Pin No Yes Yes No No No Yes No No
Inverting Yes Yes Yes Yes Yes Yes Yes
Flyback No No No No No No No No No
RegType Switching Regulator Switching Regulator Switching Regulator Switching Regulator Switching Regulator Switching Regulator Switching Regulator Switching Regulator Switching Regulator
Temperature Min -40 deg C -40 deg C -40 deg C -40 deg C -40 deg C -40 deg C -40 deg C -40 deg C -40 deg C
Temperature Max 125 deg C 125 deg C 125 deg C 125 deg C 125 deg C 125 deg C 125 deg C 125 deg C 125 deg C
Adjustable Output Yes, No Yes Yes Yes, No Yes, No Yes Yes Yes, No Yes, No
Adj Switch Frequency No Yes Yes No No Yes Yes No No
PWM Mode Voltage Current Current Voltage with Vin Feedforward Voltage with Vin Feedforward Constant on-time Current Voltage Voltage
Topology Buck Buck, Inverting Buck Buck Buck Buck Buck Buck Buck
Special Features SIMPLE SWITCHER regulator 1.5% feedback voltage accuracy, emulated current mode 1.5% feedback voltage accuracy, emulated current mode Programmable current limit, 2% output voltage accuracy, SIMPLE SWITCHER regulator Internal Type 3 compensation, 2% output voltage accuracy, SIMPLE SWITCHER regulator No compensation required, ultra-fast transient response, thermal shutdown 1.5% feedback voltage accuracy, emulated current mode SIMPLE SWITCHER regulator SIMPLE SWITCHER regulator, error output delay
Step-Down Yes Yes Yes Yes Yes Yes Yes Yes Yes
Multiple Output Capability No No No No No No No No No
Output Power Undefined Watt Undefined Watt Undefined Watt Undefined Watt Undefined Watt Undefined Watt Undefined Watt
Output Voltage 3.3, Undefined, 12, 15, 5 Volt Undefined Volt 3.3, 12, Undefined, 5 Volt 3.3, 12, Undefined, 5 Volt Undefined Volt 3.3, Undefined, 12, 5 Volt 3.3, Undefined, 12, 5 Volt
Output Range 15V, 5V, 12V, 1.23V to 65V, 3.3V 1.23V to 37V 1.23V to 37V 12V, 1.23V to 37V, 3.3V, 5V 12V, 1.23V to 37V, 3.3V, 5V 1.254V to 20V 1.23V to 70V 5V, 12V, 1.23V to 37V, 3.3V 5V, 12V, 1.23V to 37V, 3.3V
Switching Frequency 52 kHz 500 kHz 1000 kHz 260 kHz 260 kHz 500 kHz 500 kHz 150 kHz 150 kHz
Regulator Family SIMPLE SWITCHER SIMPLE SWITCHER SIMPLE SWITCHER SIMPLE SWITCHER Undefined SIMPLE SWITCHER SIMPLE SWITCHER
Synchronous Rectification No No No No No No No No No
LP2996 芯片订购型号Order
Part Number(s)
(NSID)
Top View Availability Budgetary Pricing Pack
Size
LP2996LQ/NOPB
LP2996LQ
LLP Full production
Lead Time: 8 weeks
$0.62 each at 1K+ pcs reel of 1000
LP2996LQX/NOPB
LP2996LQX
LLP Full production
Lead Time: 8 weeks
$0.62 each at 1K+ pcs reel of 4500
LP2996M/NOPB
LP2996M

SOIC NARROW
Full production
Lead Time: 8 weeks
$0.62 each at 1K+ pcs rail of 95
LP2996MR/NOPB
LP2996MR

PSOP
Full production
Lead Time: 8 weeks
$0.62 each at 1K+ pcs rail of 95
LP2996MRX/NOPB
LP2996MRX

PSOP
Full production
Lead Time: 6 weeks
$0.62 each at 1K+ pcs reel of 2500
LP2996MX/NOPB
LP2996MX

SOIC NARROW
Full production
Lead Time: 8 weeks
$0.62 each at 1K+ pcs reel of 2500
LP2996 标准体系参考Reliability Metrics
Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LP2996LQ CS065 2 38968 52 0 4402000 1 1249079519
LP2996LQX CS065 2 38968 52 0 4402000 1 1249079519
LP2996M CS065 2 38968 52 0 4402000 1 1249079519
LP2996MR CS065 2 38968 52 0 4402000 1 1249079519
LP2996MRX CS065 2 38968 52 0 4402000 1 1249079519
LP2996MX CS065 2 38968 52 0 4402000 1 1249079519
LP2996 应用技术支持与电子电路设计开发资源下载 Documents