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LMZ10500 650mA SIMPLE SWITCHER® Nano Module with 5.5V Maximum Input Voltage
FEATURES
1
•
Integrated Inductor
2
•
Miniature Form Factor (3.0mm x 2.5mm x
1.425mm)
•
8-pin LLP Footprint
•
–40°C to 125°C Junction Temperature Range
•
Adjustable Output Voltage
•
2.0MHz Fixed PWM Switching Frequency
•
Integrated Compensation
•
Soft Start Function
•
Current Limit Protection
•
Thermal Shutdown Protection
•
Input Voltage UVLO for Power-up, Power-
down, and Brown-out Conditions
•
Only 5 External Components — Resistor
Divider and 3 Ceramic Capacitors
APPLICATIONS
•
Point of Load Conversions from 3.3V and 5V
Rails
•
Space Constrained Applications
•
Low Output Noise Applications
ELECTRICAL SPECIFICATIONS
•
Up to 650mA Output Current
•
Input Voltage Range 2.7V to 5.5V
•
Output Voltage Range 0.6V to 3.6V
•
Efficiency up to 95%
PERFORMANCE BENEFITS
•
Small Solution Size
•
Low output Voltage Ripple
•
Easy Component Selection and Simple PCB
Layout
•
High Efficiency Reduces System Heat
Generation
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Check for Samples:
LMZ10500
DESCRIPTION
The LMZ10500 SIMPLE SWITCHER® nano module
is an easy-to-use step-down DC-DC solution capable
of driving up to 650mA load in space-constrained
applications. Only an input capacitor, an output
capacitor, a small V
resistors are required for basic operation. The nano
module comes in 8-pin POS footprint package with
an integrated inductor. Internal current limit based
softstart function, current overload protection, and
thermal shutdown are also provided.
System Performance
(Quick Overview Links: V
3.3V)
V
SNVS723C – OCTOBER 2011 – REVISED MARCH 2013
filter capacitor, and two
CON
= 1.2V, 1.8V, 2.5V,
OUT
Typical Efficiency at V
100
90
80
70
60
50
VOUT = 1.2V
VOUT = 1.8V
40
VOUT = 2.5V
VOUT = 3.3V
30
20
0.0
0.1
0.2
0.3
0.4
LOAD CURRENT (A)
Output Voltage Ripple
= 5.0V, V
= 1.8V, I
IN
OUT
VOUT RIPPLE
COUT = 10 F 10V 0805 X5R
10 mV/Div
500 MHz BW
Copyright © 2011–2013, Texas Instruments Incorporated
LMZ10500
= 3.6V
IN
0.5
0.6
0.7
= 650mA
OUT
1 µs/Div
Table of Contents
Related Manuals for Texas Instruments LMZ10500
Summary of Contents for Texas Instruments LMZ10500
- Page 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners.
-
Page 2: Connection Diagram
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Submit Documentation Feedback Copyright © 2011–2013, Texas Instruments Incorporated Product Folder Links: LMZ10500... -
Page 3: Operating Ratings
(1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics. (2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and specifications. -
Page 4: System Parameters
Transient VOUT = 1.8V, I = 650 mA (1) Ripple voltage should be measured across C on a well-designed PC board using the suggested capacitors. Submit Documentation Feedback Copyright © 2011–2013, Texas Instruments Incorporated Product Folder Links: LMZ10500... - Page 5 Unless otherwise stated the following conditions apply: T = 25°C. Symbol Parameter Conditions Units VIN = 5.0V Load = 40 µs, Load transient response mV pk-pk Transient = 1.8V = 65mA to 650mA Submit Documentation Feedback Copyright © 2011–2013, Texas Instruments Incorporated Product Folder Links: LMZ10500...
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Page 6: Typical Performance Characteristics
VIN = 4.0V VIN = 4.5V VIN = 5.0V VIN = 5.5V 100 110 120 130 1000 AMBIENT TEMPERATURE (° C) FREQUENCY (MHz) Figure 6. Figure 7. Submit Documentation Feedback Copyright © 2011–2013, Texas Instruments Incorporated Product Folder Links: LMZ10500... - Page 7 Conducted Emissions CISPR 22 Quasi Peak 500 mV/Div CISPR 22 Average 200 mA/Div 200 mA/Div 500 mV/Div IOUT 100m VOUT 10 µs/Div FREQUENCY (MHz) Figure 8. Figure 9. Submit Documentation Feedback Copyright © 2011–2013, Texas Instruments Incorporated Product Folder Links: LMZ10500...
- Page 8 VIN = 2.7V 1.21 VIN = 3.3V VIN = 3.6V VIN = 5.0V VIN = 5.5V 1.20 LOAD CURRENT (A) INPUT VOLTAGE (V) Figure 14. Figure 15. Submit Documentation Feedback Copyright © 2011–2013, Texas Instruments Incorporated Product Folder Links: LMZ10500...
- Page 9 VIN = 3.3V T A = 85° C VIN = 3.6V VIN = 5.0V VIN = 5.5V 1.77 LOAD CURRENT (A) INPUT VOLTAGE (V) Figure 20. Figure 21. Submit Documentation Feedback Copyright © 2011–2013, Texas Instruments Incorporated Product Folder Links: LMZ10500...
- Page 10 VIN = 3.3V T A = 85° C VIN = 3.6V VIN = 5.0V VIN = 5.5V 2.50 LOAD CURRENT (A) INPUT VOLTAGE (V) Figure 26. Figure 27. Submit Documentation Feedback Copyright © 2011–2013, Texas Instruments Incorporated Product Folder Links: LMZ10500...
- Page 11 VIN = 3.6V VIN = 4.0V 3.24 VIN = 4.5V VIN = 5.0V VIN = 5.5V 3.22 LOAD CURRENT (A) INPUT VOLTAGE (V) Figure 32. Figure 33. Submit Documentation Feedback Copyright © 2011–2013, Texas Instruments Incorporated Product Folder Links: LMZ10500...
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Page 12: Block Diagram
VREF REFERENCE VOLTAGE ERROR AMPLIFIER COMP CURRENT COMP CURRENT SENSE VOUT MOSFET Integrated CONTROL Inductor LOGIC UVLO MAIN CONTROL OSCILLATOR PGND SGND Figure 34. Functional Block Diagram Submit Documentation Feedback Copyright © 2011–2013, Texas Instruments Incorporated Product Folder Links: LMZ10500... - Page 13 CIRCUIT OPERATION The LMZ10500 is a synchronous Buck power module using a PFET for the high side switch and an NFET for the synchronous rectifier switch. The output voltage is regulated by modulating the PFET switch on-time. The circuit generates a duty-cycle modulated rectangular signal.
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Page 14: Current Limit
OUTPUT SHORT CIRCUIT PROTECTION In addition to cycle by cycle current limit, the LMZ10500 features a second level of short circuit protection. If the load pulls the output voltage down and the feedback voltage falls to 0.375V, the output short circuit protection will engage. -
Page 15: High Duty Cycle Operation
100% to support the output voltage. The input voltage at which the duty cycle reaches 100% is the edge of regulation. When the LMZ10500 input voltage is lowered, such that the off-time of the PFET reduces to less than 35ns, the LMZ10500 doubles the switching period to extend the off-time for that V and maintain regulation. -
Page 16: Thermal Overload Protection
THERMAL OVERLOAD PROTECTION The junction temperature of the LMZ10500 should not be allowed to exceed its maximum operating rating of 125°C. Thermal protection is implemented by an internal thermal shutdown circuit which activates at 150°C (typ). When this temperature is reached, the device enters a low power standby state. In this state switching remains off causing the output voltage to fall. -
Page 17: Dynamic Output Voltage Scaling
GAIN product tolerance limits. DYNAMIC OUTPUT VOLTAGE SCALING The V pin on the LMZ10500 can be driven externally by a DAC to scale the output voltage dynamically. The output voltage V = 2.5V/V x V . When driving V with a source different than V place a 1.5kΩ... -
Page 18: Package Considerations
If the machine releases the component by force, use minimum force or no more than 3 Newtons. • For PCBs with surface mount components on both sides, it is suggested to put the LMZ10500 on the top side. In case the application requires bottom side placement, a reflow fixture may be required to protect the module during the second reflow. -
Page 19: Board Layout Considerations
V and PGND terminals. V (pin 7) and PGND (pin 6) on the LMZ10500 are next to each other which makes the input capacitor placement simple. 2. Place the V filter capacitor C and the R resistive divider as close as possible to the V SGND terminals.The C... -
Page 20: Revision History
SNVS723C – OCTOBER 2011 – REVISED MARCH 2013 www.ti.com REVISION HISTORY Changes from Revision B (March 2013) to Revision C Page • Changed layout of National Data Sheet to TI format ......................Submit Documentation Feedback Copyright © 2011–2013, Texas Instruments Incorporated Product Folder Links: LMZ10500... -
Page 21: Packaging Information
PACKAGE OPTION ADDENDUM www.ti.com 31-May-2013 PACKAGING INFORMATION Orderable Device Status Package Type Package Pins Package Eco Plan Lead/Ball Finish MSL Peak Temp Op Temp (°C) Device Marking Samples Drawing (4/5) LMZ10500SH/NOPB ACTIVE 1000 Pb-Free (RoHS Call TI Level-3-260C-168 HR -40 to 85 Exempt) LMZ10500SHE/NOPB ACTIVE... - Page 22 PACKAGE OPTION ADDENDUM www.ti.com 31-May-2013 In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 2...
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Page 23: Tape And Reel Information
PACKAGE MATERIALS INFORMATION www.ti.com 26-Mar-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Reel Reel Pin1 Type Drawing Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant (mm) W1 (mm) LMZ10500SH/NOPB 1000 178.0 12.4 12.0 LMZ10500SHE/NOPB 178.0 12.4 12.0 LMZ10500SHX/NOPB... - Page 24 PACKAGE MATERIALS INFORMATION www.ti.com 26-Mar-2013 *All dimensions are nominal Device Package Type Package Drawing Pins Length (mm) Width (mm) Height (mm) LMZ10500SH/NOPB 1000 210.0 185.0 35.0 LMZ10500SHE/NOPB 210.0 185.0 35.0 LMZ10500SHX/NOPB 3000 367.0 367.0 35.0 Pack Materials-Page 2...
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Page 28: Important Notice
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue.