Quick Detail:
Low Voltage Synchronous Buck Controller with Adjustable Switching Frequency
Description:
The NCP1575 is a low voltage buck controller. It provides the control for a DC−DC power solution producing an output voltage as low as 0.980 V over a wide current range. It contains all required circuitry for a synchronous NFET buck regulator using the V2 control method to achieve the fastest possible transient response and best overall regulation. The NCP1575 operates at a default switching frequency of 200 kHz, but switching frequency is user−programmable with an additional resistor between ROSC and ground. This device provides undervoltage lockout protection, soft−start, and built−in adaptive nonoverlap and is assembled in an SOIC−8 package.
The NCP1575−based solution requires a bias supply of 12 V, and it can convert from a bulk power supply ranging from 2 V to 12 V.
Conversion from bulk supplies greater than 7 V is best accomplished by using an external doubler circuit to raise the enhancement voltage for the external NFET switches.
Applications:
• Pb−Free Packages are Available
• 0.980 V ±1.0% Reference Voltage
• V2 Control Topology
• 200 ns Transient Response
• Programmable Soft−Start
• 40 ns Gate Rise and Fall Times (3.3 nF Load)
• Adaptive FET Nonoverlap Time
• Default 200 kHz Oscillator Frequency (No External Resistor Required)
• User−Programmable Oscillator Frequency (One External Resistor Required)
• Undervoltage Lockout
• On/Off Control Through Use of the COMP Pin
• Overvoltage Protection through Synchronous MOSFETs
• Synchronous N−Channel Buck Design
• “12 V Only” or Dual Supply Operation
Specifications:
Datasheets | NCP1575 |
Product Photos | 8-SOIC |
Product Change Notification | Product Obsolescence 08/Apr/2011 |
Standard Package | 2,500 |
Category | Integrated Circuits (ICs) |
Family | PMIC - Voltage Regulators - DC DC Switching Controllers |
Series | - |
Packaging | Tape & Reel (TR) |
PWM Type | Current/Voltage Mode, V²™ |
Number of Outputs | 1 |
Frequency - Max | 320kHz |
Duty Cycle | - |
Voltage - Supply | 9 V ~ 20 V |
Buck | Yes |
Boost | No |
Flyback | No |
Inverting | No |
Doubler | No |
Divider | No |
Cuk | No |
Isolated | No |
Operating Temperature | 0°C ~ 125°C |
Package / Case | 8-SOIC (0.154", 3.90mm Width) |
Other Names | NCP1575DR2GOS |
Competitive Advantage:
Warranty :180 days !
Free shipping: Order over $1000 win a free shipment fee
(goods weight below 3Kg) ,during 20130901-20130930 .
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