LM2852Y-2.5EVAL National Semiconductor, LM2852Y-2.5EVAL Datasheet
LM2852Y-2.5EVAL
Specifications of LM2852Y-2.5EVAL
Related parts for LM2852Y-2.5EVAL
LM2852Y-2.5EVAL Summary of contents
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... The LM2852 is available with a choice of two switch- ing frequencies - 500kHz (LM2852Y) or 1.5MHz (LM2852X). It also features internal, type-three compensation to deliver a low component count solution. The exposed-pad TSSOP-14 package enhances the thermal performance of the LM2852 ...
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Connection Diagram Pin Descriptions AVIN (Pin 1): Chip bias input pin. This provides power to the logic of the chip. Connect to the input voltage or a separate rail. EN (Pin 2): Enable. Connect this pin to ground to disable ...
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... Ordering Information Order Number Frequency LM2852YMXA-0.8 LM2852YMXAX-0.8 LM2852YMXA-1.0 LM2852YMXAX-1.0 LM2852YMXA-1.2 LM2852YMXAX-1.2 LM2852YMXA-1.5 LM2852YMXAX-1.5 500kHz LM2852YMXA-1.8 LM2852YMXAX-1.8 LM2852YMXA-2.5 LM2852YMXAX-2.5 LM2852YMXA-3.0 LM2852YMXAX-3.0 LM2852YMXA-3.3 LM2852YMXAX-3.3 LM2852XMXA-0.8 LM2852XMXAX-0.8 LM2852XMXA-1.0 LM2852XMXAX-1.0 LM2852XMXA-1.2 LM2852XMXAX-1.2 LM2852XMXA-1.5 LM2852XMXAX-1.5 1500kHz LM2852XMXA-1.8 LM2852XMXAX-1.8 LM2852XMXA-2.5 LM2852XMXAX-2.5 LM2852XMXA-3.0 LM2852XMXAX-3.0 LM2852XMXA-3.3 LM2852XMXAX-3.3 Note: Contact factory for other voltage options. ...
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... OUT 2.5V 2.85V ≤ AVIN ≤ 5. 3.3V OUT 3.5V ≤ AVIN ≤ 5.5V Normal operation Rising Falling Hysteresis Isw = 2A Isw = 2A LM2852X LM2852Y 1500kHz option. 500kHz option. 4 1.5V to 5.5V 2.85V to 5.5V −40˚C to +125˚C 38˚C/W ) range of -40˚C J Min Typ Max Units 0 ...
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Electrical Characteristics Limits in standard type are for T = 25˚C only; limits in boldface type apply over the junction temperature ( +125˚C. Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent ...
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... LM2852Y Typical Performance Characteristics (500kHz) Efficiency 1.5V OUT Efficiency 3.3V OUT www.national.com Load 20127004 Load 20127006 6 Efficiency vs I Load V = 2.5V OUT 20127024 Frequency vs Temperature 20127009 ...
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LM2852X Typical Performance Characteristics (1500kHz) Efficiency vs I Load V = 1.5V OUT Efficiency vs I Load V = 3.3V OUT Efficiency vs I 20127025 Frequency vs Temperature 20127027 7 Load V = 2.5V OUT 20127026 20127028 www.national.com ...
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LM2852 Typical Performance Characteristics (Both Y and X Versions) Shutdown Current vs V NMOS Switch R vs Temperature DSON www.national.com Quiescent Current (Non-Switching 20127008 PMOS Switch R 20127010 8 IN 20127007 vs Temperature DSON 20127011 ...
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... Block Diagram Applications Information The LM2852 is a DC-DC synchronous buck regulator be- longing to National Semiconductor’s SIMPLE SWITCHER family. Integration of the PWM controller, power switches and compensation network greatly reduces the component count required to implement a switching power supply. A typical application requires only four components: an input capacitor, a soft-start capacitor, an output filter capacitor and an output filter inductor ...
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... COMPENSATION The LM2852 provides a highly integrated solution to power supply design. The compensation of the LM2852, which is Frequency Option V (V) OUT 0.8 0.8 1.0 1.0 1.2 1.2 LM2852Y 1.5 (500kHz) 1.5 1.8 1.8 2.5 2.5 3.3 0.8 0.8 1.0 1.0 1.2 1.2 LM2852X 1 ...
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Applications Information CHOOSING AN INDUCTANCE VALUE The current ripple present in the output filter inductor is determined by the input voltage, output voltage, switching frequency and inductance according to the following equa- tion: where ∆I is the peak-to-peak current ripple, ...
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Applications Information OUTPUT FILTER CAPACITORS The capacitors that may be used in the output filter with the LM2852 are limited in value and ESR range according to Capacitance (µF) Part Number 10 GRM31MR61A106KE19 10 GRM32DR61E106K 68 595D686X_010C2T 68 595D686X_016D2T 100 ...
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... The sense pin connection should be made as close to the load as possible so that the voltage at the load is the LM2852 Example Circuit Schematic Bill of Materials for 500kHz (LM2852Y) 3.3V ID Part Number U LM2852YMXA-1.8 1 ...
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