CM2576

Features:

Guaranteed 3A output current
3.3V, 5V, and adjustable versions
Wide input voltage range, up to 40V
Internal oscillator of 52KHz fixed frequency
Wide adjustable version output voltage range, from 1.23V to 37V±4% max over line and load conditions
Low standby current, typ. 70µA, at shutdown mode
Requires only 4 external components
Thermal shutdown and current limit protection
P+ product enhancement tested


Application

LCD Monitors
ADD-ON Cards Switching Regulators
High Efficiency Step-Down Regulators
Efficient Pre-regulator for Linear Regulators 
 


Pinout




Specifications

Input Voltage (V_POWER) ....................... +45V
ENABLE E   Pin Input Voltage ................ 0.3V VVIN
Operating Junction Temperature Range, TJ  ......... 0 to +150
Storage Temperature .................... -65 to +150
Lead Temperature (10 sec.) ......................... 260

 

Description

The CM2576 series are step-down switching regulators with all required active functions. It is capable of driving 3A load with excellent line and load regulations. These devices are available in fixed output voltages of 3.3V, 5V, and an adjustable output version. The CM2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. Also it requires a minimum number of external components. It substantially not only reduces the area of board size but also the size of the heat sink, and in some cases no heat sink is required. ±4% tolerance on output voltage within specified input voltages and output load conditions is guaranteed. Also, CM2576 oscillator frequency accuracy is within ±10%. External shutdown is included, featuring 70µA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.