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CM3018-31ST Datasheet(PDF) 2 Page - California Micro Devices Corp |
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CM3018-31ST Datasheet(HTML) 2 Page - California Micro Devices Corp |
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2 / 11 page  © 2004 California Micro Devices Corp. All rights reserved. 2 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ▲ Tel: 408.263.3214 ▲ Fax: 408.263.7846 ▲ www.calmicro.com 07/29/04 CM3018 PRELIMINARY Pin / Bump Descriptions Package / Ordering Information SOT23-5 Package PIN / BUMP DESCRIPTIONS SOT23-5 PIN CSP BUMP NAME DESCRIPTION 1C3 VIN The input power supply for the regulator. If this input is within a few inches of the main supply filter, a capacitor may not be necessary. Otherwise an input filter capacitor of approximately 1 µF will ensure adequate filtering. 2 B2 GND The negative reference for all voltages. 3 A1 EN A logic input control to enable the regulator output. When EN is asserted (logic high), it allows output regulation to commence. When EN is deasserted (logic low), the regula- tor pass transistor is forced into a high impedance mode, and an internal discharge resistance (300 Ω) is applied to the output. 4 A3 BYP This pin is connected to the internal voltage reference of the regulator. An external bypass capacitor CBYP of 10nF is recommended to improve the noise performance and to maximize the power supply ripple rejection. 5C1 VOUT The regulator voltage output used to power the load. A nominal output capacitor of 1 µF is sufficient to minimize any transient disturbances under normal operating conditions. Additional output capacitance can be used to further improve transient load response. PACKAGE / PINOUT DIAGRAM Note: This drawing is not to scale. 5-pin SOT23 VIN GND EN 1 2 5 3 4 VOUT BYP Top View SOT-23 PART NUMBERING INFORMATION SOT23-5 PKG. Pins Output Voltage Package Standard Finish Lead-free Finish Ordering Part Number1 Part Marking Ordering Part Number1 Part Marking 5 1.5V SOT23-5 CM3018-15ST EA15 CM3018-15SO EG15 5 1.8V SOT23-5 CM3018-18ST EA18 CM3018-18SO EG18 5 2.5V SOT23-5 CM3018-25ST EA25 CM3018-25SO EG25 5 2.8V SOT23-5 CM3018-28ST EA28 CM3018-28SO EG28 5 2.9V SOT23-5 CM3018-29ST EA29 CM3018-29SO EG29 5 3.0V SOT23-5 CM3018-30ST EA30 CM3018-30SO EG30 5 3.1V SOT23-5 CM3018-31ST EA31 CM3018-31SO EG31 5 3.3V SOT23-5 CM3018-33ST EA33 CM3018-33SO EG33 |
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