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NCP1530DM30R2G Datasheet(PDF) 3 Page - ON Semiconductor |
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NCP1530DM30R2G Datasheet(HTML) 3 Page - ON Semiconductor |
3 / 16 page NCP1530 http://onsemi.com 3 PIN FUNCTION DESCRIPTIONS Pin Symbol Description 1 VIN Unregulated Supply Input. 2 SYN Oscillator Synchronization and Mode Selection Input. SYNC = GND (Automatic PWM/PFM mode) The converter operates at 600 kHz fixed−frequency PWM mode primarily, and automatically switches to variable−frequency PFM mode at small output loads for power saving. SYNC = VIN (Constant−Frequency PWM mode) The converter operates at 600 kHz fixed−frequency PWM mode always. SYNC = External clock signal between 600 to 1200 kHz. The converter will be synchronized with the external clock signal. The SYNC pin is internally pulled to GND. 3 SS Soft−Start Timing control pin. An external soft−start capacitor can be connected to this pin if extended soft−start is required. A 50 nA current will be sourced from this pin to charge up the capacitor during startup and gently ramps the device into service to prevent output voltage overshoot. If this pin is floated, built−in 500 ms (typ.) soft−start will be activated. 4 GND Ground Terminal. 5 EN Active−High Enable Input. Active to enable the device. Bring this pin to GND and the quiescent current is reduced to less than 0.5 mA. This pin is internally pulled to VIN. 6 VOUT Feedback Terminal. The output voltage is sensed by this pin. 7 VREF Connected to voltage reference decoupling capacitor. For noise non−sensitive applications, the internal voltage reference can operate without decoupling capacitor. 8 LX Inductor Terminal. This pin is connected to the drains of the internal P−channel switching transistors. The inductor must be connected between this pin and the output terminal. MAXIMUM RATINGS Rating Symbol Value Unit Power Supply (Pin 1) VIN −0.3 to 6 V Input/Output Pins (Pins 2−4 & Pins 7−8) VIO −0.3 to 6 V Thermal Characteristics Micro8 Plastic Package Thermal Resistance, Junction−to−Air RqJA 240 °C/W Operating Junction Temperature Range TJ 0 to +150 °C Operating Ambient Temperature Range TA 0 to +85 °C Storage Temperature Range Tstg −55 to +150 °C Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. 1. This device series contains ESD protection and exceeds the following tests: Human Body Model (HBM) "2.0 kV per JEDEC standard: JESD22−A114. Machine Model (MM) "200 V per JEDEC standard: JESD22−A115. 2. Latchup Current Maximum Rating: "150 mA per JEDEC standard: JESD78. 3. Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: J−STD−020A. |
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