Microsemi NX7101
NX7101 is a 340kHz fixed The controller is equipped with output frequency, current mode, PWM over-voltage protection which protects the synchronous buck (step-down) DC- IC under a open load condition. The device soft-start and over-temperature protection integrates N-channel power MOSFET (OTP) to protect the circuit. This IC is available in SOIC-8 Current mode control provides fast package.DESCRIPTION
DC converter, capable of driving a 2A Additional safety features include under load with high efficiency, excellent voltage lock-out (UVLO), programmable line and load regulation. switches with low on-resistance. transient response and cycle-by-cycle current limit. KEYFEATURES
● 2A Synchronous Step-down Regulator● Operational Input Supply Voltage Range: 4.5V-18V
● Integrated Upper NMOS and Lower NMOS
● 340kHz Switching Frequency
● Input UVLO
● Enable
● Programmable External Soft- Start
● Cycle-By-Cycle Over-Current Protection
● Over Voltage Protection
● Frequency Fold Back Under Short Condition 12V VIN Copyright 2010 Rev. 1.7, 2014-06-24
APPLICATIONS
● Set-Top Box● LCD TV’s
● Notebook/Netbook
● PoE Powered Devices PRODUCT HIGHLIGHT IN(2) BST(1) CIN NX7101 2*10uF(25V,X5R) C4 0.1u SS(8) SW(3) R4 100k EN(7) GND(4) FB(5) COMP(6) R3 10k C3 3.9nF C5 10nF L1 10uH R1 26.1k R2 10k Figure 1 – NX7101 typical application PACKAGE ORDER INFO Plastic SOIC 8 Pin TA (C) DM RoHS Compliant / Pb-free -40 to 85 NX7101IDM Note: Available in Tape & Reel.