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LMZ13610 10A SIMPLE SWITCHER® Power Module with 36V Maximum Input Voltage
May 3, 2011
LMZ13610 10A SIMPLE SWITCHER® Power Module with 36V Maximum Input Voltage
Easy to use 11 pin package
Performance Benefits
■ High efficiency reduces system heat generation ■ Low radiated emissions (EMI) complies with EN55022
class B standard (Note 2)
■ Only 7 external components ■ Low output voltage ripple ■ No external heat sink required
System Performance
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EFFICIENCY (%)
TO-PMOD 11 Pin Package 15 x 17.79 x 5.9 mm (0.59 x 0.7 x 0.232 in) θJA = 9.9 °C/W, θJC = 1.0 °C/W (Note 1) RoHS Compliant
Efficiency VIN = 24V VOUT = 3.3V
100 90 80 70 60 50 40 30 20 0 1 24 Vin 2 3 4 5 6 7 8 OUTPUT CURRENT (A) 9 10
Electrical Specifications
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50W maximum total output power Up to 10A output current Input voltage range 6V to 36V Output voltage range 0.8V to 6V Efficiency up to 92%
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Key Features
MAXIMUM OUTPUT CURRENT (A)
■ ■ ■ ■ ■ ■ ■ ■ ■
Integrated shielded inductor Simple PCB layout Fixed switching frequency (350 kHz) Flexible startup sequencing using external soft-start, tracking and precision enable Protection against inrush currents and faults such as input UVLO and output short circuit – 40°C to 125°C junction temperature range Single exposed pad and standard pinout for easy mounting and manufacturing Fully enabled for Webench® Power Designer Pin compatible with LMZ22010/08, LMZ12010/08, LMZ23610/08/06H, and LMZ13608/06H
Thermal derating curve VIN = 24V, VOUT = 3.3V
12 10 8 6 4 2 0 20 θJA = 9.9 °C/W θJA = 6.8 °C/W θJA = 5.2 °C/W 40 60 80 100 TEMPERATURE (C) 120
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Note 1: θJA measured on a 75mm x 90mm four layer PCB. Note 2: EN 55022:2006, +A1:2007, FCC Part 15 Subpart B.
Applications
■ ■ ■ ■
Point of load conversions from 12V and 24V input rail Time critical projects Space constrained / high thermal requirement applications Negative output voltage applications (See AN-2027)
© 2011 National Semiconductor Corporation
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LMZ13610
Simplified Application Schematic
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Connection Diagram
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Top View 11-Lead TO-PMOD
Ordering Information
Order Number LMZ13610TZ LMZ13610TZE Package Type TO-PMOD-11 TO-PMOD-11 NSC Package Drawing TZA11A TZA11A Supplied As 32 Units in a Rail 250 Units on Tape and Reel
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LMZ13610
Pin Descriptions
Pin 1, 2 Name Description VIN Supply input — Nominal operating range is 6V to 36V . A small amount of internal capacitance is contained within the package assembly. Additional external input capacitance is required between this pin and PGND. Enable — Input to the precision enable comparator. Rising threshold is 1.274V typical. Once the module is enabled, a 20 uA source current is internally activated to accommodate programmable hysteresis. Feedback — Internally connected to the regulation, over-voltage, and short-circuit comparators. The regulation reference point is 0.8V at this input pin. Connect the feedback resistor divider between the output and AGND to set the output voltage. Soft-Start/Track input — To extend the 1.6 mSec internal soft-start connect an external soft start capacitor. For tracking connect to an external resistive divider connected to a higher priority supply rail. See applications section. No Connect. This pin must remain floating, do not ground.
3, 5, 6 AGND Analog Ground — Reference point for all stated voltages. Must be externally connected to EP/PGND. 4 7 EN FB
8 9 10, 11 EP
SS NC
VOUT Output Voltage — Output from the internal inductor. Connect the output capacitor between this pin and PGND. PGND Exposed Pad / Power Ground Electrical path for the power circuits within the module. — NOT Internally connected to AGND / pin 5. Used to dissipate heat from the package during operation. Must be electrically connected to pin 5 external to the package.
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LMZ13610
Absolute Maximum Ratings (Note 3)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. VIN to PGND EN to AGND SS, FB to AGND AGND to PGND Junction Temperature Storage Temperature Range -0.3V to 40V -0.3V to 5.5V -0.3V to 2.5V -0.3V to 0.3V 150°C -65°C to 150°C
ESD Susceptibility (Note 4) For soldering specifications: see product folder at www.national.com and www.national.com/ms/MS/MS-SOLDERING.pdf
± 2 kV
Operating Ratings
VIN EN Operation Junction Temperature
(Note 3) 6V to 36V 0V to 5.0V −40°C to 125°C
Electrical Characteristics
Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the junction temperature (TJ) range of -40°C to +125°C. Minimum and Maximum limits are guaranteed through test, design or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise stated the following conditions apply: VIN = 12V, VOUT = 3.3V Symbol Parameter Conditions Min (Note 5) Typ (Note 6) .