LMZ10503_1006 Datasheet, PDF (1/22 Pages) National Semiconductor (TI) – 3A SIMPLE SWITCHER® Power Module with 5.5V Maximum Input Voltage

LMZ10503
June 10, 2010
3A SIMPLE SWITCHER® Power Module with 5.5V Maximum
Input Voltage
Easy to Use 7 Pin Package
Performance Benefits
■ ^{Operates at high ambient temperatures}
■ ^{High efficiency up to 96% reduces system heat generation}
■ ^{Low radiated emissions (EMI) complies with EN55022}
class B standard (Note 4)
■ ^{Low output voltage ripple of 10 mV allows for powering}
noise-sensitive transceiver and signaling ICs
■ ^{Fast transient response for powering FPGAs and ASICs}
TO-PMOD 7 Pin Package
301118a4
10.16 x 13.77 x 4.57 mm (0.4 x 0.39 x 0.18 in)
θ_JA = 20°C/W, θ_JC = 1.9°C/W (Note 3)
RoHS Compliant
System Performance
Current Derating (V_OUT = 3.3V)
Electrical Specifications
■ ^{15W maximum total output power}
■ ^{Up to 3A output current}
■ ^{Input voltage range 2.95V to 5.5V}
■ ^{Output voltage range 0.8V to 5V}
■ ^{±1.63% feedback voltage accuracy over temperature}
■ ^{Efficiency up to 96%}
Key Features
■ ^{Integrated shielded inductor}
■ ^{Flexible startup sequencing using external soft-start,}
tracking, and precision enable
■ ^{Protection against in-rush currents and faults such as input}
UVLO and output short-circuit
■ ^{-40°C to +125°C junction temperature operating range}
■ ^{Single exposed pad and standard pinout for easy}
mounting and manufacturing
■ ^{Pin-to-pin compatible with}
LMZ10504 (4A/20W max)
LMZ10505 (5A/25W max)
■ ^{Fully enabled for WEBENCH® and Power Designer}
Applications
■ ^{Point-of-load conversions from 3.3V and 5V rails}
■ ^{Space constrained applications}
■ ^{Extreme temperatures/no air flow environments}
■ ^{Noise sensitive applications (i.e. transceiver, medical)}
301118a5
Efficiency (V_OUT = 3.3V)
30111871
Radiated Emissions (EN 55022, Class B)
301118a6
Note 1: Note 1: θ _JA measured on a 2.25” x 2.25” (5.8 cm x 5.8 cm) four layer board. Refer to PCB Layout Diagrams or Evaluation Board Application Note:
AN-2022.
Note 2: Note 2: EN 55022:2006, +A1:2007, FCC Part 15 Subpart B: 2007. See Figure 5 and layout for information on device under test.
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