LMZ12003TZ-ADJ NSC [National Semiconductor], LMZ12003TZ-ADJ Datasheet

no-image

LMZ12003TZ-ADJ

Manufacturer Part Number
LMZ12003TZ-ADJ
Description
Manufacturer
NSC [National Semiconductor]
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LMZ12003TZ-ADJ
Manufacturer:
TI/德州仪器
Quantity:
20 000
Part Number:
LMZ12003TZ-ADJ/NOPB
Manufacturer:
NS
Quantity:
1 000
© 2010 National Semiconductor Corporation
3A SIMPLE SWITCHER® Power Module with 20V Maximum
Input Voltage
Electrical Specifications
Key Features
Applications
18W maximum total power output
Up to 3A output current
Input voltage range 4.5V to 20V
Output voltage range 0.8V to 6V
Efficiency up to 92%
Integrated shielded inductor
Simple PCB layout
Flexible startup sequencing using external soft-start
capacitor 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
Fast transient response for FPGAs and ASICs
Low output voltage ripple
Pin-to-pin compatible family:
LMZ14203/2/1 (42V max 3A, 2A, 1A)
LMZ12003/2/1 (20V max 3A, 2A, 1A)
Fully Webench® Power Designer enabled
Point of load conversions from 5V and 12V input rail
Time critical projects
Space constrained high thermal requirement applications
Negative output voltage applications (See AN-2027)
10.16 x 13.77 x 4.57 mm (0.4 x 0.542 x 0.18 in)
θ
Easy to use 7 pin package
JA
TO-PMOD 7 Pin Package
= 20°C/W, θ
RoHS Compliant
JC
= 1.9°C/W
301090
30109086
LMZ12003
Performance Benefits
System Performance
Operates at high ambient temperature with no thermal
derating
High efficiency 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
Radiated Emissions (EN 55022 Class B)
Efficiency V
Thermal derating curve
from Evaluation Board
V
IN
= 12V V
IN
= 12V V
OUT
= 5.0V
OUT
30109019
30109018
= 5.0V
30109050
April 12, 2010
www.national.com

Related parts for LMZ12003TZ-ADJ

LMZ12003TZ-ADJ Summary of contents

Page 1

SIMPLE SWITCHER® Power Module with 20V Maximum Input Voltage Easy to use 7 pin package TO-PMOD 7 Pin Package 10.16 x 13.77 x 4.57 mm (0.4 x 0.542 x 0.18 in) θ = 20°C/W, θ = 1.9°C ...

Page 2

... Simplified Application Schematic Connection Diagram Ordering Information Order Number LMZ12003TZ-ADJ LMZ12003TZX-ADJ LMZ12003TZE-ADJ Pin Descriptions Pin Name Description 1 VIN Supply input — Nominal operating range is 4.5V to 20V . A small amount of internal capacitance is contained within the package assembly. Additional external input capacitance is required between this pin and exposed pad. ...

Page 3

Pin Name Description 7 VOUT Output Voltage — Output from the internal inductor. Connect the output capacitor between this pin and exposed pad Exposed Pad — Internally connected to pin 4. Used to dissipate heat from the package ...

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, RON to GND EN, FB GND Junction Temperature Storage Temperature Range Electrical Characteristics junction temperature (T ...

Page 5

Symbol Parameter η Efficiency η Efficiency Note 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 ...

Page 6

Efficiency 6V Input @ 85°C Efficiency 8V Input @ 85°C Efficiency 12V Input @ 85°C www.national.com Dissipation 6V Input @ 85°C 30109033 Dissipation 8V Input @ 85°C 30109040 Dissipation 12V Input @ 85°C 30109042 6 30109034 30109041 30109043 ...

Page 7

Line and Load Regulation @ 25°C Transient Response 12V 3.3V 0. Step IN O Application Block Diagram 12V 3.3V IN 30109048 Thermal Derating V 30109006 7 Output Ripple 3A 20mV/div 1μSec/div O 30109005 = 1.8V OUT 30109051 30109008 ...

Page 8

General Description The LMZ12003 SIMPLE SWITCHER power module is an easy-to-use step-down DC-DC solution capable of driving load with exceptional power conversion efficiency, line and load regulation, and output accuracy. The LMZ12003 is available in an innovative ...

Page 9

Note that the following conditions will reset the soft-start capacitor by discharging the SS input to ground with an internal 200 μA current sink. • The enable input being “pulled low” • Thermal shutdown condition • Over-current fault ...

Page 10

CCM and DCM Operating Modes = 3A/0.4A 2 μsec/div V = 12V 3.3V The approximate formula for determining the DCM/CCM boundary is as follows: ≊ )/(2*6.8 μH *(V –V DCB O IN ...

Page 11

LMZ12003 to minimize noise. 4. Make input and output bus connections as wide as possible. This reduces any voltage drops on the input or output of the converter and maximizes efficiency. ...

Page 12

Evaluation Board Schematic Diagram Ref Des Description U1 SIMPLE SWITCHER ® µF, 50V, X7R in1 C 10 µF, 50V, X7R in2 C 1 µF, 50V, X7R O1 C 100 µF, 6.3V, X7R O2 R 1.37 kΩ FBT R ...

Page 13

13 30109016 30109017 www.national.com ...

Page 14

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 7-Lead TZA Package NS Package Number TZA07A 14 ...

Page 15

Notes 15 www.national.com ...

Page 16

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 ...

Related keywords