GENERAL DESCRIPTION
The ACT4070 is a current-mode step-down DC/DC converter that generates up to 3A output current at 400kHz switching frequency. The device utilizes Active-Semi’s proprietary ISOBCD30 process for operation with input voltage up to 30V.
Consuming only 6μA in shutdown mode, the ACT4070 is highly efficient with peak efficiency at 95% when in operation. Protection features include cycle-by-cycle current limit, thermal shutdown, and frequency fold back at short circuit. The device also includes an internal soft start function to prevent overshoot.
The ACT4070 is available in SOP-8/EP exposed pad package and requires very few external devices for operation.

FEATURES
*3A Output Current
*Up to 95% Efficiency
*4.5V to 30V Input Range
*6μA Shutdown Supply Current
*400kHz Switching Frequency
*Adjustable Output Voltage
*Cycle-by-Cycle Current Limit Protection
*Thermal Shutdown Protection
*Internal Soft Start Function
*Frequency Fold Back at Short Circuit
*Stability with Wide Range of Capacitors, Including Low ESR Ceramic Capacitors
*SOP-8/EP (Exposed Pad) Package

APPLICATIONS
*TFT LCD Monitors or Televisions and HDTV
*Portable DVD Players
*Car-Powered or Battery-Powered Equipment
*Set-Top Boxes
*Telecom Power Supplies
*DSL and Cable Modems and Routers

ACT4070YH, ACT4070YH-T

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GENERAL DESCRIPTION
The ACT4060 is a current-mode step-down DC/DC converter that generates up to 2A of output current at 420kHz switching frequency. The device utilizes Active-Semi’s proprietary ISOBCD20 process for operation with input voltages up to 20V.
Consuming only 8μA in shutdown mode, the ACT4060 is highly efficient with peak operating efficiency at 95%. Protection features include cycle-bycycle current limit, thermal shutdown, and frequency foldback at short circuit.
The ACT4060 is available in a SOP-8 package and requires very few external devices for operation.

FEATURES
*2A Output Current
*Up to 95% Efficiency
*4.75V to 20V Input Range
*8μA Shutdown Supply Current
*420kHz Switching Frequency
*Adjustable Output Voltage
*Cycle-by-Cycle Current Limit Protection
*Thermal Shutdown Protection
*Frequency FoldBack at Short Circuit
*Stability with Wide Range of Capacitors, Including Low ESR Ceramic Capacitors
*SOP-8 Package

APPLICATIONS
*TFT LCD Monitors
*Portable DVDs
*Car-Powered or Battery-Powered Equipments
*Set-Top Boxes
*Telecom Power Supplies
*DSL and Cable Modems and Routers
*Termination Supplies

ACT4060SH, ACT4060SH-T

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GENERAL DESCRIPTION
The CM2596S 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 CM2596S 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, the oscillator frequency accuracy is within ±15%. External shutdown is included, featuring 150μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

FEATURES
*Guaranteed 3A output current
*3.3V, 5V, and adjustable versions
*Wide input voltage range, up to 40V
*Internal oscillator of 150KHz fixed frequency
*Wide adjustable version output voltage range, from 1.23V to 37V±4% max over line and load conditions
*Low standby current, typ. 150μA, at shutdown mode
*Requires only 4 external components
*Thermal shutdown and current limit protection
*Requires only 4 external components
*Excellent line and load regulation specifications
*TTL shutdown capability

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

CM2596SSCN220, CM2596SZJCN220, CM2596SCN220, CM2596SGSCN220, CM2596SGZJCN220, CM2596SGCN220, CM2596SGCN220B, CM2596SSCN263, CM2596SZJCN263, CM2596SCN263, CM2596SGSCN263, CM2596SGZJCN263, CM2596SGCN263

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