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LM5007 Hysteretic PFET Buck Controller

LM5008 100V 350mA Switching Regulator
LM5010 1A 80V Switching Regulator
LM2597HV 0.5A 60V Simple Switcher W/ Pgood
LM2936 LM2936 - 60V 50mA Linear Regulator
LM317HV 60V 1.5A Linear Regulator
LM5007EP Higher Temperature Enhanced Plastic Version
LM5007 特性Features
LM5007 概述Description

The LM5007 Step Down Switching Regulator features all of the functions needed to implement low cost, efficient, Buck bias regulators. This high voltage regulator contains an 80 V, 0.7A N-Channel Buck Switch. The device is easy to apply and is provided in the MSOP-8 and the thermally enhanced LLP-8 packages. The regulator is based on a hysteretic control scheme using an on time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant with load and input voltage variations. The hysteretic control requires no control loop compensation, while providing very fast load transient response. An intelligent current limit is implemented in the LM5007 with forced off time that is inversely proportional to VOUT. This current limiting scheme reduces load current foldback. Additional protection features include: Thermal Shutdown, Vcc undervoltage lockout, gate drive undervoltage lockout, and Max Duty Cycle limiter.

LM5007 应用Applications

LM5007 功能框图Block Diagram

LM5007 功能框图Block Diagram

LM5007 功能框图Block Diagram

LM5007 典型性能Typical Performance

LM5007 性能参数Parametrics
Paramaters / Values LM5007 LM5008 LM5010 LM2597HV
Output Current 500 mA 350 mA 1000 mA 500 mA
Input Min Voltage 9 Volt 9.5 Volt 8 Volt 4.5, 7, 4.75, 15 Volt
Input Max Voltage 75 Volt 95 Volt 75 Volt 60 Volt
Output Min 2.5 Volt 2.5 Volt 2.5 Volt 3.3, 1.23, 12, 5 Volt
Output Max 73 Volt 75 Volt 70 Volt 57, 3.3, 12, 5 Volt
Frequency Min 50 kHz 50 kHz 50 kHz 150 kHz
Frequency Max 800 kHz 600 kHz 1000 kHz 150 kHz
Efficiency (peak) 93 % 92 % 91 % 88, 80, 82 %
On/Off Pin Yes Yes Yes Yes
PowerGood / Error Flag No No No Yes
SoftStart No No Yes Yes
Sync Pin No No No No
Inverting Yes Yes Yes Yes
Flyback No No No No
RegType Switching Regulator Switching Regulator Switching Regulator Switching Regulator
Temperature Min -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
Adjustable Output Yes Yes Yes Yes, No
Adj Switch Frequency Yes Yes Yes No
PWM Mode Constant on-time Constant on-time Constant on-time Voltage
Topology Buck Buck Buck Buck
Special Features Internal startup regulator for Vin>9V, internal 80V/0.7A N-FET, Pull Ron pin to ground for shutdown Internal startup regulator for Vin>9V, internal 100V/0.5A N-FET, Pull Ron pin to ground for shutdown No compensation required, ultra-fast transient response SIMPLE SWITCHER regulator, error output delay
Step-Down Yes Yes Yes Yes
Multiple Output Capability No No No No
Output Power Undefined Watt Undefined Watt Undefined Watt Undefined Watt
Output Voltage Undefined Volt Undefined Volt Undefined Volt 3.3, Undefined, 5, 15 Volt
Output Range 2.5V to 73V 2.5V to 75V 2.5V to 70V 15V, 5V, 3.3V, 1.23V to 57V
Switching Frequency 800 kHz 600 kHz 1000 kHz 150 kHz
Feedback Voltage 2.5 Volt 2.5 Volt 2.5 Volt
Regulator Family Undefined Undefined Undefined SIMPLE SWITCHER
Automotive Yes Undefined
Synchronous Rectification No No No No
LM5007 芯片订购型号Order
Part Number(s) (NSID) Top View Availability Budgetary Pricing Pack Size
LM5007MM/NOPB
LM5007MM
MINI SOIC Full production Lead Time: 6 weeks $1.59 each at 1K+ pcs reel of 1000
LM5007MMX/NOPB
LM5007MMX
MINI SOIC Full production Lead Time: 6 weeks $1.59 each at 1K+ pcs reel of 3500
LM5007SD/NOPB
LM5007SD
LLP Full production Lead Time: 6 weeks $1.59 each at 1K+ pcs reel of 1000
LM5007SDX/NOPB LLP Full production Lead Time: 6 weeks $1.59 each at 1K+ pcs reel of 4500
LM5007 开发工具LM5007EVAL
Part Number(s) (NSID) Description Availability Budgetary Pricing Pack Size
LM5007EVAL High Voltage (80V) Step Down Switching Regulator Evaluation Board Full production   $30.00 each 1
LM5007 停产Obsolete Versions
Obsolete Part Alternate Part or Supplier Source Last Time Buy Date
LM5007MMEP NONE NATIONAL SEMICONDUCTOR 16 Nov 2008
LM5007 应用技术支持与电子电路设计开发资源下载 Documents