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SA57254-25GW Datasheet(PDF) 2 Page - NXP Semiconductors |
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SA57254-25GW Datasheet(HTML) 2 Page - NXP Semiconductors |
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2 / 18 page  Philips Semiconductors Product data SA57254-XX CMOS switching regulator (PWM controlled) 2 2003 Nov 11 GENERAL DESCRIPTION The SA57254-XX is a fully integrated DC/DC converter circuit. Efficient, compact power conversion is achieved with a pulse width modulation (PWM) controlled switching regulator circuit designed using CMOS processing. Low ripple and high efficiency of typically 83% are achieved through PWM control. The regulator has a high precision output with ±2.4% accuracy. Few external components are required. The SA57254-XX has a built-in soft-start circuit which reduces inrush current and voltage overshoot during start-up. A low resistance CMOS power FET, which has low leakage current and low parasitic capacitance, is on-chip. FEATURES • Operates from 0.7 to 9 V DC • Ultra low operating supply current—typically 17 µA • Built-in power FET • High efficiency—typically 83% • High precision output—typically ±2.4% • Operating temperature range of –40 to +85 °C • Available output voltages: 2.0, 2.5, 2.8, 3.0, 3.3, 3.6, 5.0 V DC • Available in a 5-lead small outline surface mount package (SOP003) APPLICATIONS • Mobile and portable phones • Instrumentation and industrial products • Other portable, battery-operated equipment SIMPLIFIED SYSTEM DIAGRAM SL01501 1 VREF 5 4 VOUT VBATT SA57254-XX GND SW FB PWM CONTROL SOFT START 2 R R SA57254-XX as a boost (step-up) converter. VDD Figure 1. Simplified system diagram. |
Similar Part No. - SA57254-25GW |
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Similar Description - SA57254-25GW |
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