ncp1589a ON Semiconductor, ncp1589a Datasheet
ncp1589a
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ncp1589a Summary of contents
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... Product Preview Low Voltage Synchronous Buck Controller The NCP1589A low cost PWM controller designed to operate from 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 ...
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PGOOD COMP/ 0.0015mF 17.08kW C2 0.007mF 0.014mF R1 3.878kW R3 4.12kW 74.2W PGOOD VOS 9 MONITOR OV and UV 0 ref FB 8 − ref COMP/EN ...
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PIN FUNCTION DESCRIPTION Pin No. Symbol 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 ...
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... 1.0 nF, for min/max values unless otherwise noted Characteristic Input Voltage Range Boost Voltage Range Supply Current Quiescent Supply Current (NCP1589A) Boost Quiescent Current Undervoltage Lockout UVLO Threshold UVLO Threshold UVLO Hysteresis Switching Regulator VFB Feedback Voltage Oscillator Frequency (NCP1589A) Oscillator Frequency (NCP1589B) Ramp− ...
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... 804 CC 802 800 798 796 794 792 vs. Figure 4. Reference Voltage (V SW 543 NCP1589B 542 NCP1589A 541 540 539 Figure 6. OCP Threshold at 55k vs. Temperature http://onsemi.com JUNCTION TEMPERATURE (° vs. ref Temperature JUNCTION TEMPERATURE (°C) ...
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... For example, if the NCP1589A/B is configured to provide a regulated output voltage of 2.5 V, the normal softstart sequence will ramp the output voltage from 4.2 ms ...
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Internal UVLO Fault 1.45 V COMP −0.7 V 700 OCP Program- mable UG V OUT FB PGOOD POR UVLO 0 NORMAL Figure 7. Typical Startup Sequence http://onsemi.com 7 3.6 V ...
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... PGOOD UG LG Overvoltage Feedback and Compensation The NCP1589A/B allows the output voltage to be adjusted from 0 5.0 V via an external resistor divider network. The controller will try to maintain 0 feedback pin. Thus resistor divider circuit was placed across the feedback pin the controller will regulate ...
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Output Filter Double Pole Frequency OUT OUT F + 2.653 kHz lc c.. ESR Zero Frequency ESR OUT ...
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... FOR END OF TERMINAL LEAD AT EDGE OF PACKAGE. MILLIMETERS 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 0.00 0.03 L1 1.8508 3.3048 0.5000 PITCH ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCP1589A/D ...