LMZ10505EXT_15 Datasheet, PDF (1/36 Pages) Texas Instruments – 5A SIMPLE SWITCHER Power Module With 5.5-V Maximum Input Voltage for Demanding and Rugged Applications

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LMZ10505EXT
SNVS669H – JUNE 2010 – REVISED SEPTEMBER 2015
LMZ10505EXT 5-A SIMPLE SWITCHER^® Power Module With 5.5-V Maximum Input Voltage
for Demanding and Rugged Applications
1 Features
•1 Integrated Shielded Inductor
• Flexible Start-up Sequencing Using External Soft-
Start, Tracking, and Precision Enable
• Protection Against In-Rush Currents and Faults
Such as Input UVLO and Output Short-Circuit
• Single Exposed Pad and Standard Pinout for Easy
Mounting and Manufacturing
• Pin-to-Pin Compatible With
– LMZ10503EXT (3-A/15-W Maximum)
– LMZ10504EXT (4-A/20-W Maximum)
• Fast Transient Response for Powering FPGAs
and ASICs
• Electrical Specifications
– 25-W Maximum Total Output Power
– Up to 5-A Output Current
– Input Voltage Range 2.95 V to 5.5 V
– Output Voltage Range 0.8 V to 5 V
– ±1.63% Feedback Voltage Accuracy Over
Temperature
• Performance Benefits
– Operates at High Ambient Temperatures
– Low Radiated Emissions (EMI) Tested to
EN55022 Class B Standard
– Passes 10-V/m Radiated Immunity EMI Tested
to 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
NOTE: EN 55022:2006, +A1:2007, FCC Part 15 Subpart B: 2007.
See Figure 28 and layout for information on device under
test.
2 Applications
• Point-of-Load Conversions from 3.3-V and 5-V
Rails
• Space-Constrained Applications
• Noise-Sensitive Applications (Such as
Transceiver, Medical)
3 Description
The LMZ10505EXT SIMPLE SWITCHER^® power
module is a complete, easy-to-use, DC-DC solution
capable of driving up to a 5-A load with exceptional
power conversion efficiency, output voltage accuracy,
line and load regulation. The LMZ10505EXT is
available in an innovative package that enhances
thermal performance and allows for hand or machine
soldering.
The LMZ10505EXT can accept an input voltage rail
between 2.95 V and 5.5 V, and can deliver an
adjustable and highly accurate output voltage as low
as 0.8 V. 1-MHz fixed-frequency PWM switching
provides a predictable EMI characteristic. Two
external compensation components can be adjusted
to set the fastest response time, while allowing the
option to use ceramic or electrolytic output capacitors.
Externally programmable soft-start capacitor
facilitates controlled start-up. The LMZ10505EXT is a
reliable and robust solution with the following
features: lossless cycle-by-cycle peak current limit to
protect for overcurrent or short-circuit fault, thermal
shutdown, input undervoltage lockout, and prebiased
start-up. The LMZ10505EXT is also fully-enabled for
WEBENCH^® and Power Designer tools.
Device Information⁽¹⁾⁽²⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LMZ10505EXT
TO-PMOD (7) 9.85 mm × 10.16 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
(2) Peak reflow temperature equals 245°C. See SNAA214 for
more details.
Typical Application Circuit
VIN
Cin
6, 7
VOUT
1 _{VIN LMZ10505EXT}
5
EN
FB
2
SS
GND
3
CSS
4, EP
CO
Rfbt
Rfbb
Rcomp Ccomp
VOUT
Efficiency V_OUT = 3.3 V
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.