LMZ10503EXT datasheet(1/22 Pages) NSC

部件名	LMZ10503EXT

功能描述	3A SIMPLE SWITCHER짰 Power Module with 5.5V Maximum Input Voltage for Military and Rugged Applications

PDF	22 Pages

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制造商	NSC [National Semiconductor (TI)]

网页	http://www.national.com

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LMZ10503EXT

July 30, 2010

3A SIMPLE SWITCHER® Power Module with 5.5V Maximum

Input Voltage for Military and Rugged Applications

Easy to Use 7 Pin Package

301182a4

TO-PMOD 7 Pin Package

10.16 x 13.77 x 4.57 mm (0.4 x 0.39 x 0.18 in)

θ

JA = 20°C/W, θJC = 1.9°C/W (Note 1)

RoHS Compliant

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

■ -55°C to +125°C junction temperature operating range

■ Single exposed pad and standard pinout for easy

mounting and manufacturing

■ Pin-to-pin compatible with

LMZ10504EXT (4A/20W max)

LMZ10505EXT (5A/25W max)

■ Fully enable for WEBENCH® and Power Designer

■ Low output voltage ripple of 10 mV allows for powering

noise-sensitive transceiver and signaling ICs

■ Fast transient response for powering FPGAs and ASICs

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)

Performance Benefits

■ Operates at high ambient temperatures

■ Low radiated emissions (EMI) complies with EN55022

class B standard (Note 2)

■ Passes 10V/m radiated immunity EMI test standard

EN61000 4-3

■ Passes vibration standard

MIL-STD-883 Method 2007.2 Condition A

JESD22-B103B Condition 1

■ Passes drop standard

MIL-STD-883 Method 2002.3 Condition B

JESD22-B110 Condition B

System Performance

Current Derating (V

OUT = 3.3V)

301182a5

Efficiency (V

OUT = 3.3V)

30118271

Radiated Emissions (EN 55022, Class B)

301182a6

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-2074.

Note 2: EN 55022:2006, +A1:2007, FCC Part 15 Subpart B: 2007. See Figure 5 and layout for information on device under test.

301182

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