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NCP1450A - PWM Step-up DC-DC Controller

Datasheet Summary

Description

Pin # 1 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ2 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ3 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ4 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ5 Symbol CE OUT NC GND EXT Pin Description Chip Enab

Features

  • High Efficiency 86% at IO = 200 mA, VIN = 2.0 V, VOUT = 3.0 V 88% at IO = 400 mA, VIN = 3.0 V, VOUT = 5.0 V.
  • Low Startup Voltage of 0.9 V typical at IO = 1.0 mA.
  • Operation Down to 0.6 V.
  • Five Standard Voltages: 1.9 V, 2.7 V, 3.0 V, 3.3 V, 5.0 V with High Accuracy ± 2.5%.
  • Low Conversion Ripple.
  • High Output Current up to 1000 mA (3.0 V version at VIN = 2.0 V, L = 10 mH, COUT = 220 mF).
  • Fixed Frequency Pulse Width Modulation (PWM) at 1.

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Datasheet preview – NCP1450A

Datasheet Details

Part number NCP1450A
Manufacturer ON
File Size 216.34 KB
Description PWM Step-up DC-DC Controller
Datasheet download datasheet NCP1450A Datasheet
Additional preview pages of the NCP1450A datasheet.

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Full PDF Text Transcription

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NCP1450A PWM Step−up DC−DC Controller The NCP1450A series are PWM step−up DC−DC switching controller that are specially designed for powering portable equipment from one or two cells battery packs. The NCP1450A series have a driver pin, EXT pin, for connecting to an external transistor. Large output currents can be obtained by connecting a low ON−resistance external power transistor to the EXT pin. The device will automatically skip switching cycles under light load condition to maintain high efficiency at light loads. With only six external components, this series allows a simple means to implement highly efficient converter for large output current applications.
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