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LM26001MXA Scheda tecnica(PDF) 1 Page - National Semiconductor (TI) |
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LM26001MXA Scheda tecnica(HTML) 1 Page - National Semiconductor (TI) |
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1 / 17 page  LM26001 1.5A Switching Regulator with High Efficiency Sleep Mode General Description The LM26001 is a switching regulator designed for the high efficiency requirements of applications with stand-by modes. The device features a low-current sleep mode to maintain efficiency under light-load conditions and current-mode con- trol for accurate regulation over a wide input voltage range. Quiescent current is reduced to 10 µA typically in shutdown mode and less than 40 µA in sleep mode. Forced PWM mode is also available to disable sleep mode. The LM26001 can deliver up to 1.5A of continuous load current with a fixed current limit, through the internal N-channel switch. The part has a wide input voltage range of 4.0V to 38V and can operate with input voltages as low as 3V during line transients. Operating frequency is adjustable from 150 kHz to 500 kHz with a single resistor and can be synchronized to an external clock. Other features include Power good, adjustable soft-start, enable pin, input under-voltage protection, and an internal bootstrap diode for reduced component count. Features n High efficiency sleep mode n 40 µA typical Iq in sleep mode n 10 µA typical Iq in shutdown mode n 3.0V minimum input voltage n 4.0V to 38V continuous input range n 1.5% reference accuracy n Cycle-by-cycle current limit n Adjustable Frequency (150 kHz to 500 kHz) n Synchronizable to an external clock n Power Good Flag n Forced PWM function n Adjustable Soft-start n TSSOP-16 exposed pad package n Thermal Shut Down Applications n Automotive Telematics n Navigation systems n In-Dash Instrumentation n Battery Powered Applications n Stand-by power for home gateways/set-top boxes Typical Application Circuit 20179401 September 2006 © 2006 National Semiconductor Corporation DS201794 www.national.com |
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