LMZ10505TZ-ADJ/NOPB National Semiconductor, LMZ10505TZ-ADJ/NOPB Datasheet

IC BUCK SYNC ADJ 5A TO-PMOD-7

LMZ10505TZ-ADJ/NOPB

Manufacturer Part Number
LMZ10505TZ-ADJ/NOPB
Description
IC BUCK SYNC ADJ 5A TO-PMOD-7
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Point of Load (POL) Non-Isolated with UVLOr
Datasheet

Specifications of LMZ10505TZ-ADJ/NOPB

Output
0.8 ~ 5 V
Number Of Outputs
1
Power (watts)
25W
Mounting Type
Surface Mount
Voltage - Input
2.95 ~ 5.5 V
Package / Case
TO-PMOD-7, Power Module
1st Output
0.8 ~ 5 VDC @ 5A
Size / Dimension
0.40" L x 0.54" W x 0.18" H (10.16mm x 13.77mm x 4.57mm)
Power (watts) - Rated
25W
Operating Temperature
-40°C ~ 125°C
Efficiency
96%
Approvals
EN
Operating Temperature (max)
125C
Operating Temperature (min)
-40C
Pin Count
7
Mounting
Surface Mount
Case Length
10.16mm
Case Height
4.57mm
Screening Level
Automotive
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
3rd Output
-
2nd Output
-
Lead Free Status / Rohs Status
Compliant
Other names
LMZ10505TZ-ADJTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LMZ10505TZ-ADJ/NOPB
Manufacturer:
MICROCHIP
Quantity:
340
© 2010 National Semiconductor Corporation
5A SIMPLE SWITCHER® Power Module with 5.5V Maximum
Input Voltage
Electrical Specifications
Key Features
Applications
Note 1: θ
AN-2022.
Note 2: EN 55022:2006, +A1:2007, FCC Part 15 Subpart B: 2007. See Figure 5 and layout for information on device under test.
25W maximum total output power
Up to 5A 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%
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
LMZ10503 (3A/15W max)
LMZ10504 (4A/20W max)
Fully enable for WEBENCH® and Power Designer
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)
10.16 x 13.77 x 4.57 mm (0.4 x 0.39 x 0.18 in)
JA
measured on a 2.25” x 2.25” (5.8 cm x 5.8 cm) four layer board. Refer to
θ
JA
= 20°C/W, θ
Easy to Use 7 Pin Package
TO-PMOD 7 Pin Package
RoHS Compliant
JC
= 1.9°C/W
301074
(Note
3)
30107402
LMZ10505
Performance Benefits
System Performance
Operates at high ambient temperatures
High efficiency up to 96% reduces system heat generation
Low radiated emissions (EMI) complies with EN55022
class B standard
Passes 10V/m radiated immunity EMI test standard
EN61000 4-3
Low output voltage ripple of 10 mV allows for powering
noise-sensitive transceiver and signaling ICs
Fast transient response for powering FPGAs and ASICs
PCB Layout Diagrams
Radiated Emissions (EN 55022, Class B)
Current Derating (V
Efficiency (V
(Note
4)
or Evaluation Board Application Note:
OUT
OUT
= 3.3V)
= 3.3V)
30107471
30107412
30107413
June 10, 2010
www.national.com

Related parts for LMZ10505TZ-ADJ/NOPB

LMZ10505TZ-ADJ/NOPB Summary of contents

Page 1

... Refer to JA AN-2022. Note 2: EN 55022:2006, +A1:2007, FCC Part 15 Subpart B: 2007. See Figure 5 and layout for information on device under test. © 2010 National Semiconductor Corporation LMZ10505 Performance Benefits ■ Operates at high ambient temperatures ■ ...

Page 2

... FB Feedback pin. This is the inverting input of the error amplifier used for sensing the output voltage. Keep the copper area of this node small. www.national.com 30107472 Top View 7-Lead TO-PMOD Package Type NSC Package Drawing TO-PMOD-7 TZA07A Description 2 30107401 Package Marking LMZ10505TZ-ADJ ...

Page 3

Pin Number Name 6, 7 VOUT The output terminal of the internal inductor. Connect the output filter capacitor between VOUT pin and EP. EP Exposed Exposed pad is used as a thermal connection to remove heat from the device. Connect ...

Page 4

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. VIN, VOUT, EN, FB GND ESD Susceptibility (Note 6) Power Dissipation Junction Temperature Electrical Characteristics apply over the operating junction temperature range T test, design, or statistical correlation. Typical values represent the most likely parametric norm at T reference purposes only ...

Page 5

Electrical Characteristics apply over the operating junction temperature range T test, design, or statistical correlation. Typical values represent the most likely parametric norm at T reference purposes only 3.3V, unless otherwise indicated in the conditions column. ...

Page 6

Typical Performance Characteristics V = 5.0V µF 10V X5R ceramic capacitor Load Transient Response V = 3.3V 2.5V 0.5A to 4.5A to 0.5A step IN OUT OUT 20 MHz Bandwidth ...

Page 7

Efficiency V = 1.8V OUT 30107469 Efficiency V = 1.2V OUT 30107468 Current Derating = 5V, θ 20° 30107414 Efficiency V = 1.5V OUT Efficiency V = 0.8V OUT Current Derating = 3.3V, θ ...

Page 8

Radiated Emissions (EN 55022, Class 5V 2.5V OUT Evaluation Board Pre-biased Startup V = 2.5V, I OUT OUT www.national.com = 5A OUT 30107412 = 0A 30107455 8 Startup V = 2.5V ...

Page 9

Block Diagram General Description The LMZ10505 SIMPLE SWITCHER® power module is a complete, easy-to-use DC-DC solution capable of driving load with exceptional power conversion efficiency, output voltage accuracy, line and load regulation. The LMZ10505 is available ...

Page 10

A second criteria before finalizing the C the RMS current capability. The necessary RMS current rat- ing of the input capacitor to a buck regulator can be estimated by With this high AC current present in the input capacitor, the ...

Page 11

TABLE 1. Recommended Output Filter Capacitors C (µF) Voltage (V), R (mΩ) O ESR 22 6.3, < 6.3, < 6.3, < 10.0, < 5 100 6.3, < 5 100 6.3, 50 100 6.3, 25 ...

Page 12

Estimate Power Dissipation And Board Thermal Requirements Use the current derating curves in the typical performance characteristics section to obtain an estimate of power loss (P ). For the design case of V IC_LOSS 85°C ...

Page 13

Additional Features ENABLE The LMZ10505 features an enable (EN) pin and associated comparator to allow the user to easily sequence the LMZ10505 from an external voltage rail manually set the input UVLO threshold. The turn-on or rising threshold ...

Page 14

For example, if the master supply voltage V the LMZ10505 output voltage was 1.8V, then the value of R needed to give the two supplies identical soft-start times trkb would be 14.3 kΩ. A timing diagram for this example, the ...

Page 15

... Vishay Dale 0402 Vishay Dale 0402 Murata 0402 Murata and keep and C fbb fbt comp 15 30107454 Manufacturer P/N Quantity LMZ10505TZ-ADJ 1 6TPE150MIC2 1 6TPE330MIL 1 CRCW0603100KFKEA 1 CRCW060347K5FKEA 1 CRCW060315K0FKEA 1 C1608C0G1H331J 1 GRM188R71C103KA01 1 Manufacturer P/N Quantity LMZ10505TZ-ADJ 1 C3216X5R0J476M 2 CRCW0402100KFKED 1 CRCW04021K00FKED 1 GRM1555C1H270JZ01 1 GRM155R71C103KA01 1 for a type III compensation. comp www.national.com ...

Page 16

... Vishay Dale 0402 Vishay Dale 0402 Vishay Dale 0402 Murata 0402 Murata = 75 kΩ) fbt R fbb 34.8 kΩ 59 kΩ 84.5 kΩ 150 kΩ 590 kΩ 16 30107481 Manufacturer P/N Quantity LMZ10505TZ-ADJ 1 1210ZD226MAT 2 EEE1AA221AP 1* 0805ZD475MAT 1* 12066D226MAT 1* 18126D107MAT 1 CRCW040275K0FKED 1 CRCW040234K8FKED 1 CRCW04021K00FKED 1 GRM1555C1H101JZ01 1 GRM155R71C103KA01 1 ...

Page 17

... Vishay Dale 0603 TDK 0805 Vishay Dale 0805 TDK = 75 kΩ) fbt R fbb 34.8 kΩ 59 kΩ 84.5 kΩ 150 kΩ 590 kΩ 17 30107480 = 5A OUT (MAX) Manufacturer P/N Quantity LMZ10505TZ-ADJ 1 C2012X7R1C105K 1 C2012X5R0J475K 2 C3225X5R1C226M 2 C3225X5R0J476M 1 EEE1AA221AP 1 C4532X5R0J107M 1 CRCW080575K0FKEA 1 CRCW080534K8FKEA 1 CRCW08051K10FKEA 1 C1608C0G1H181J 1 CRCW0805100KFKEA ...

Page 18

... Vishay Dale 0805 Vishay Dale 0805 Vishay Dale 0603 TDK 0805 TDK = 75 kΩ) fbt R fbb 23.7 kΩ 34.8 kΩ 59 kΩ 84.5 kΩ 150 kΩ 590 kΩ 18 30107416 Manufacturer P/N Quantity LMZ10505TZ-ADJ 1 C2012X7R1C105K 1 C2012X5R0J475K 1 C3225X5R0J476M 1 C4532X5R0J107M 1 CRCW080575K0FKEA 1 CRCW080534K8FKEA 1 CRCW08051K10FKEA 1 C1608C0G1H181J 1 C2012C0G1H103J 1 ...

Page 19

PCB Layout Diagrams The PCB design is available in the LMZ10505 product folder at www.national.com. FIGURE 6. Top Copper FIGURE 7. Internal Layer 1 (Ground) 19 30107476 30107477 www.national.com ...

Page 20

FIGURE 8. Internal Layer 2 (Ground and Signal Traces) www.national.com FIGURE 9. Bottom Copper 20 30107478 30107479 ...

Page 21

Physical Dimensions inches (millimeters) unless otherwise noted TO-PMOD-7 Pin Package NS Package Number TZA07A 21 www.national.com ...

Page 22

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

Related keywords