ncp1593 ON Semiconductor, ncp1593 Datasheet
ncp1593
Available stocks
Related parts for ncp1593
ncp1593 Summary of contents
Page 1
... Product Preview 1 MHz Synchronous Buck Regulator The NCP1593 is a fixed 1 MHz, high−output−current, synchronous PWM converter that integrates a low−resistance, high−side P−channel MOSFET and a low−side N−channel MOSFET. The NCP1593 utilizes internally compensated current mode control to provide good transient response, ease of implementation and excellent loop stability ...
Page 2
... Good PIN DESCRIPTIONS Pin No Symbol connect pin for NCP1593A. The user may ground this pin or leave it floating pin for NCP1593B The drains of the internal MOSFETs. The output inductor should be connected to these pins Open drain output from the Power Good logic. When the FB voltage is within regulation, this is a high impedance pin ...
Page 3
V − 5 ABSOLUTE MAXIMUM RATINGS Rating Power Supply Pin (PinS 8, 9, 10) to GND LX to GND All other pins Operating Ambient Temperature Range (Note 1) Operating Junction Temperature Range (Note 1) Maximum Junction ...
Page 4
ELECTRICAL CHARACTERISTICS Parameter Input Voltage Range V UVLO Threshold CC UVLO Hysteresis V Quiescent Current CC VCCP Quiescent Current Shutdown Supply Current FEEDBACK VOLTAGE Reference Voltage Reference Voltage Feedback Input Bias Current Feedback Voltage Line Regulation PWM Maximum Duty Cycle ...
Page 5
... MOSFETs. Pulse Width Modulation A high−speed PWM comparator, capable of pulse widths as low as 35 ns, is included in the NCP1593. The inverting input of the comparator is connected to the output of the error amplifier. The non−inverting input is connected to the the current sense signal. At the beginning of each PWM cycle, the CLK signal sets the PWM flip− ...
Page 6
... The PG goes low when the FB voltage falls below 85% of the regulation point. Thermal Shutdown ms and then SS The NCP1593 protects itself from over heating with an internal thermal monitoring circuit. If the junction temperature exceeds the thermal shutdown threshold both the upper and lower MOSFETs will be shut OFF. http://onsemi.com ...
Page 7
... C Where V in(ripple max Power Dissipation The NCP1593 is available in a thermally enhanced out (eq. 3) 10−pin, DFN package. When the die temperature reaches +185°C, Thermal−Overload Protection section). The power dissipated in the device is the sum of the power dissipated from supply current (PQ), power dissipated due to switching ...
Page 8
... Reducing the thermal resistance from ground pin and exposed pad onto the board will reduce die temperature (eq. 15) and increase the power capability of the NCP1593. This is achieved by providing as much copper area as possible around the exposed pad. Adding multiple thermal vias under temperature ...
Page 9
... DIM MIN MAX A 0.80 1. 0.00 0.05 A3 0.20 REF b 0.18 0.30 D 3.00 BSC D2 2.40 2.60 E 3.00 BSC E2 1.70 1.90 e 0.50 BSC K 0.19 TYP L 0.35 0.45 L1 0.00 0.03 SOLDERING FOOTPRINT* 2.6016 1.8508 10X 0.5000 PITCH DIMENSIONS: MILLIMETERS ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCP1593/D 3.3048 ...