ncp1550 ON Semiconductor, ncp1550 Datasheet
ncp1550
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ncp1550 Summary of contents
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... PWM/PFM Step−Down DC−DC Controller The NCP1550 is a monolithic micropower high frequency voltage mode step−down controller IC, specially designed for battery operated hand−held electronic products. With appropriate external P−type MOSFET, the device can provide up to 2.0 A loading current with high conversion efficiency. The device operates in Constant− ...
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... 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) $200V 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. NCP1550 PWM Controller 600 kHz t ...
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... NCP1550SN25T1 NCP1550SN27T1 NCP1550SN30T1 NCP1550SN33T1 Temperature Coefficient Operating Current ( External Components NCP1550SN18T1 NCP1550SN19T1 NCP1550SN25T1 NCP1550SN27T1 NCP1550SN30T1 NCP1550SN33T1 Off−State Current ( NCP1550SN18T1 NCP1550SN19T1 NCP1550SN25T1 NCP1550SN27T1 NCP1550SN30T1 NCP1550SN33T1 OSCILLATOR Frequency Frequency Temperature Coefficient (T = −40°C to 85°C) ...
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... “L” Input Current ( Undervoltage Lockout Undervoltage Lockout Threshold Undervoltage Lockout Hysteresis GND NCP1550 = 25°C for typical value, −40° (continued 5 Symbol V UVLO_HYS GND Figure 2. Typical Application Diagram http://onsemi ...
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... I LOAD Figure 4. Efficiency versus Load Current 4 3 5.0 V NCP1550SN18T1 OUT M = NTGS3441T1 SD = MBRM120LT3 10 100 I , OUTPUT LOADING CURRENT (mA) LOAD http://onsemi.com 5 = 3.0 V 4.0 V 5.0 V NCP1550SN25T1 OUT M = NTGS3441T1 SD = MBRM120LT3 10 100 , OUTPUT LOADING CURRENT (mA) 1000 1000 ...
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... OUT I = 500 mA OUT SD = MBRM120LT3 60 2 3 1000 2 2.5 V Figure 7. Output Ripple Voltage versus 0.9 0.6 1.8 V 0.3 0 NCP1550 V = 5.0 V −0 OUT −0 500 mA OUT MBRM120LT3 −0.9 4.5 5 5.5 2 2.5 Figure 9. Output Voltage Change versus 3 5.0 V ...
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... Upper Trace: Output Voltage Ripple, 50 mV/Division Middle Trace: Inductor Current 500 mA/Division L Lower Trace: Voltage at Cathode of Schottky Diode, 2.0 V/Division Figure 13. Discontinuous Conduction Mode PFM Switching Waveform for V NCP1550 = 100 mF 5 OUT IN Upper Trace: Output Voltage Ripple, 50 mV/Division Middle Trace: Inductor Current, I Lower Trace: Voltage at Cathode of Schottky Diode, 2 ...
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... Upper Trace: Output Voltage Ripple, 50 mV/Division Middle Trace: Inductor Current 500 mA/Division L Lower Trace: Voltage at Cathode of Schottky Diode, 2.0 V/Division Figure 17. Continuous Conduction Mode PWM Switching Waveform for V NCP1550 = OUT IN Upper Trace: Output Voltage Ripple, 50 mV/Division Middle Trace: Inductor Current, I Lower Trace: Voltage at Cathode of Schottky Diode, 2 ...
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... OUT Upper Trace: Input Voltage, 2.0 V/Division Lower Trace: Output Voltage, 1.0 V/Division Figure 21. Startup Transient Response for V = 1.8 V OUT NCP1550 = 33 mF) OUT Upper Trace: Input Voltage, 2.0 V/Division Lower Trace: Output Voltage, 2.0 V/Division Figure 20. Startup Transient Response for = 1.8 V Upper Trace: Output Voltage Waveform, 2.0 V/Division Lower Trace: Chip Enable/Disable Pin Waveform, 0 ...
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... Upper Trace: Output Voltage Ripple, 100 mV/Division Lower Trace: Input Voltage 2.0 V/Division IN Figure 25. Line Transient Response for V = 1.8 V OUT NCP1550 = 3 5 LOAD IN Upper Trace: Output Voltage Ripple, 100 mV/Division Lower Trace: Input Voltage, 2.0 V/Division Figure 24. Line Transient Response for ...
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... T , AMBIENT TEMPERATURE (°C) A Figure 31. Oscillator Frequency versus Ambient Temperature NCP1550 ( Upper Trace: Output Voltage Ripple, 100 mV/Division Lower Trace: Load Current, I Figure 28. Load Transient Response for ...
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... V 2.47 2. 100 −50 −25 Figure 34. NCP1550SN25T1 Output Voltage −40 −50 −60 −70 −80 = 5.0 V −90 −100 50 75 100 −50 −25 Figure 36. NCP1550 EXT “H” Output Current 3 3.0 2.5 1.8 V 2.0 1 100 −50 Figure 38. NCP1550 Input Current into V OUT http://onsemi.com 5 ...
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... OUT extend the operating life of the battery. Low Power Shutdown Mode NCP1550 can be disabled whenever the CE pin (Pin 1) is tied to GND. In shutdown, the internal reference, oscillator, control circuitry, driver and internal feedback voltage divider are turned off and the output voltage falls ...
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... INPUT VOLTAGE OF NCP1550 (V) IN Figure 39. Inductor Selection Chart P−Channel Power MOSFET Selection An external P−Channel power MOSFET must be used with the NCP1550. The key selection criteria for the power MOSFET are the gate threshold and its total gate charge For low input voltage ...
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... NCP1550SN27T1 2.7 V CDC5D23 CDRH6D38 5R0 (2A) Sumida NCP1550SN30T1 3.0 V CDC5D23 CDRH6D28 5R0 (2A) Sumida NCP1550SN33T1 3.3 V CD43 CDRH6D38 3R3 (2A) Sumida NCP1550 Components Placement Power components, i.e. input capacitor, inductor and output capacitor, must be placed as close together as possible. All connecting traces must be short, direct and thick. High current flowing and switching paths must be kept away from the feedback (V injection of noise into the feedback path ...
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... NCP1550SN33T1G 3.3 V NCP1550SN30T1 3.0 V NCP1550SN30T1G 3.0 V NCP1550SN27T1 2.7 V NCP1550SN27T1G 2.7 V NCP1550SN25T1 2.5 V NCP1550SN25T1G 2.5 V NCP1550SN19T1 1.9 V NCP1550SN19T1G 1.9 V NCP1550SN18T1 1.8 V NCP1550SN18T1G 1.8 V †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. NCP1550 Switching ) Frequency Device Marking DCD DCD DBF ...
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... IN THIS LOCATION. TRIMMED LEAD NOT TO EXTEND MORE THAN 0.2 FROM BODY. MILLIMETERS DIM MIN MAX A 3.00 BSC B 1.50 BSC C 0.90 1.10 D 0.25 0.50 G 0.95 BSC H 0.01 0.10 J 0.10 0.26 K 0.20 0.60 L 1.25 1. 2.50 3.00 2.4 0.094 mm inches ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCP1550/D ...