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NCP1589


Part Number NCP1589
Manufacturer ON Semiconductor
Title Low Voltage Synchronous Buck Controller
Description Pin No. Symbol Description 1 BOOT Supply rail for the floating top gate driver. To form a boost circuit, use an external diode to bring the d...
Features include a 1.5 A gate driver design and an internally set 300ĂkHz oscillator. In addition to the 1.5 A gate drive capability, other efficiency enhancing features of the gate driver include adaptive non-overlap circuitry. The NCP158x also incorporates an externally compensated error amplifier. Protect...

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NCP1580 : Pin No. Symbol Description 1 BST Supply rail for the floating top gate driver. To form a boost circuit, use an external diode to bring the desired input voltage to this pin (cathode connected to BST pin). Connect a capacitor (CBST) between this pin and the PHASE pin. Typical values for CBST range from 0.1 mF to 1 mF. Ensure that CBST is placed near the IC. 2 TG Top gate MOSFET driver pin. Connect this pin to the gate of the top N−Channel MOSFET. 3 GND IC ground reference. All control circuits are referenced to this pin. 4 BG Bottom gate MOSFET driver pin. Connect this pin to the gate of the bottom N−Channel MOSFET. 5 VCC Supply rail for the internal circuitry. Operating su.

NCP1581 : Block Diagram NCP1581 NCP1581 Table 1. PIN FUNCTION DESCRIPTION Pin Name Description 1 FB Inverting input to the error amplifier. This pin is connected to the output of the regulator via resistor divider to set the output voltage and provide feedback to the error amplifier. 2 VP/EN Dual function pin. Non inverting input to the error amplifier. Enable input. 3 NC No Connect 4 VCC This pin provides power for the internal blocks of the IC as well as powers the low side driver. A minimum of 0.1 mF, high frequency capacitor must be connected from this pin to power ground. 5 NC No Connect 6 LDRV Output driver for low side MOSFET. 7 GND IC ground for internal control c.

NCP1582 : Pin No. Symbol Description 1 BST Supply rail for the floating top gate driver. To form a boost circuit, use an external diode to bring the desired input voltage to this pin (cathode connected to BST pin). Connect a capacitor (CBST) between this pin and the PHASE pin. Typical values for CBST range from 0.1 mF to 1 mF. Ensure that CBST is placed near the IC. 2 TG Top gate MOSFET driver pin. Connect this pin to the gate of the top N−Channel MOSFET. 3 GND IC ground reference. All control circuits are referenced to this pin. 4 BG Bottom gate MOSFET driver pin. Connect this pin to the gate of the bottom N−Channel MOSFET. 5 VCC Supply rail for the internal circuitry. Operating supply range .

NCP1582A : Pin No. Symbol Description 1 BST Supply rail for the floating top gate driver. To form a boost circuit, use an external diode to bring the desired input voltage to this pin (cathode connected to BST pin). Connect a capacitor (CBST) between this pin and the PHASE pin. Typical values for CBST range from 0.1 mF to 1 mF. Ensure that CBST is placed near the IC. 2 TG Top gate MOSFET driver pin. Connect this pin to the gate of the top N−Channel MOSFET. 3 GND IC ground reference. All control circuits are referenced to this pin. 4 BG Bottom gate MOSFET driver pin. Connect this pin to the gate of the bottom N−Channel MOSFET. 5 VCC Supply rail for the internal circuitry. Operating supply range .

NCP1583 : Pin No. Symbol Description 1 BST Supply rail for the floating top gate driver. To form a boost circuit, use an external diode to bring the desired input voltage to this pin (cathode connected to BST pin). Connect a capacitor (CBST) between this pin and the PHASE pin. Typical values for CBST range from 0.1 mF to 1 mF. Ensure that CBST is placed near the IC. 2 TG Top gate MOSFET driver pin. Connect this pin to the gate of the top N−Channel MOSFET. 3 GND IC ground reference. All control circuits are referenced to this pin. 4 BG Bottom gate MOSFET driver pin. Connect this pin to the gate of the bottom N−Channel MOSFET. 5 VCC Supply rail for the internal circuitry. Operating supply range .

NCP1586 : Pin No. Symbol Description 1 BST Supply rail for the floating top gate driver. To form a boost circuit, use an external diode to bring the desired input voltage to this pin (cathode connected to BST pin). Connect a capacitor (CBST) between this pin and the PHASE pin. Typical values for CBST range from 0.1 mF to 1 mF. Ensure that CBST is placed near the IC. 2 TG Top gate MOSFET driver pin. Connect this pin to the gate of the top N−Channel MOSFET. 3 GND IC ground reference. All control circuits are referenced to this pin. 4 BG Bottom gate MOSFET driver pin. Connect this pin to the gate of the bottom N−Channel MOSFET. 5 VCC Supply rail for the internal circuitry. Operating supply range .

NCP1587 : Pin No. Symbol Description 1 BST Supply rail for the floating top gate driver. To form a boost circuit, use an external diode to bring the desired input voltage to this pin (cathode connected to BST pin). Connect a capacitor (CBST) between this pin and the PHASE pin. Typical values for CBST range from 0.1 mF to 1 mF. Ensure that CBST is placed near the IC. 2 TG Top gate MOSFET driver pin. Connect this pin to the gate of the top N−Channel MOSFET. 3 GND IC ground reference. All control circuits are referenced to this pin. 4 BG Bottom gate MOSFET driver pin. Connect this pin to the gate of the bottom N−Channel MOSFET. 5 VCC Supply rail for the internal circuitry. Operating supply range .

NCP1587A : Pin No. Symbol Description 1 BST Supply rail for the floating top gate driver. To form a boost circuit, use an external diode to bring the desired input voltage to this pin (cathode connected to BST pin). Connect a capacitor (CBST) between this pin and the PHASE pin. Typical values for CBST range from 0.1 mF to 1 mF. Ensure that CBST is placed near the IC. 2 TG Top gate MOSFET driver pin. Connect this pin to the gate of the top N−Channel MOSFET. 3 GND IC ground reference. All control circuits are referenced to this pin. 4 BG Bottom gate MOSFET driver pin. Connect this pin to the gate of the bottom N−Channel MOSFET. 5 VCC Supply rail for the internal circuitry. Operating supply range .

NCP1587E : Pin No. 1 Symbol BST Description Supply rail for the floating top gate driver. To form a boost circuit, use an external diode to bring the desired input voltage to this pin (cathode connected to BST pin). Connect a capacitor (CBST) between this pin and the PHASE pin. Typical values for CBST range from 0.1 mF to 1 mF. Ensure that CBST is placed near the IC. Top gate MOSFET driver pin. Connect this pin to the gate of the top N−Channel MOSFET. IC ground reference. All control circuits are referenced to this pin. Bottom gate MOSFET driver pin. Connect this pin to the gate of the bottom N−Channel MOSFET. Supply rail for the internal circuitry. Operating supply range is 4.5 V to 13.2 V. Decouple w.

NCP1588 : Pin No. Symbol Description 1 BOOT Supply rail for the floating top gate driver. To form a boost circuit, use an external diode to bring the desired input voltage to this pin (cathode connected to BOOT pin). Connect a capacitor (CBOOT) between this pin and the LX pin. Typical values for CBOOT range from 0.1 mF to 1 mF. Ensure that CBOOT is placed near the IC. 2 LX Switch node pin. This is the reference for the floating top gate driver. Connect this pin to the source of the top MOSFET. 3 UG Top gate MOSFET driver pin. Connect this pin to the gate of the top N-channel MOSFET. 4 LG Bottom gate MOSFET driver pin. Connect this pin to the gate of the bottom N-channel MOSFET. 5 GND IC gr.

NCP1589A : NCP1589A, NCP1589B Low Voltage Synchronous Buck Controller The NCP1589A/B is a low cost PWM controller designed to operate from a 5 V or 12 V supply. This device is capable of producing an output voltage as low as 0.8 V. This device is capable of converting voltage from as low as 2.5 V. This 10−pin device provides an optimal level of integration to reduce size and cost of the power supply. Features include a 1.5 A gate driver design and an internally set 300 kHz or 600 kHz oscillator. In addition to the 1.5 A gate drive capability, other efficiency enhancing features of the gate driver include adaptive non−overlap circuitry. The NCP1589A/B also incorporates an externally compensated error a.

NCP1589B : NCP1589A, NCP1589B Low Voltage Synchronous Buck Controller The NCP1589A/B is a low cost PWM controller designed to operate from a 5 V or 12 V supply. This device is capable of producing an output voltage as low as 0.8 V. This device is capable of converting voltage from as low as 2.5 V. This 10−pin device provides an optimal level of integration to reduce size and cost of the power supply. Features include a 1.5 A gate driver design and an internally set 300 kHz or 600 kHz oscillator. In addition to the 1.5 A gate drive capability, other efficiency enhancing features of the gate driver include adaptive non−overlap circuitry. The NCP1589A/B also incorporates an externally compensated error a.

NCP1589D : NCP1589D Low Voltage Synchronous Buck Controller with Light Load Efficiency and Transient Enhancement The NCP1589D is a low cost PWM controller designed to operate from a 5 V or 12 V supply. This device is capable of producing an output voltage as low as 0.8 V and converting voltage from as low as 2.5 V. It is easy to operate and provides an optimal level of integration to reduce size and cost of the power supply. It operates in Ramp Pulse Modulation mode for superior load step and release response. In addition to fast transient response, it also includes a 1.5 A gate driver design and light load efficiency features such as adaptive non−overlap circuitry and diode emulation. It normally ope.

NCP1589L : Pin No. Symbol Description 1 BOOT Supply rail for the floating top gate driver. To form a boost circuit, use an external diode to bring the desired input voltage to this pin (cathode connected to BOOT pin). Connect a capacitor (CBOOT) between this pin and the LX pin. Typical values for CBOOT range from 0.1 mF to 1 mF. Ensure that CBOOT is placed near the IC. 2 LX Switch node pin. This is the reference for the floating top gate driver. Connect this pin to the source of the top MOSFET. Also used for low side MOSFET RDS(on) current detection and diode emulation. 3 UG Top gate MOSFET driver pin. Connect this pin to the gate of the top N−channel MOSFET. 4 LG Bottom gate MOSFET driver pin.




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