LMZ14202TZX-ADJ/NOPB National Semiconductor, LMZ14202TZX-ADJ/NOPB Datasheet

IC BUCK SYNC ADJ 2A TO-PMOD-7

LMZ14202TZX-ADJ/NOPB

Manufacturer Part Number
LMZ14202TZX-ADJ/NOPB
Description
IC BUCK SYNC ADJ 2A TO-PMOD-7
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Point of Load (POL) Non-Isolated with UVLOr
Datasheet

Specifications of LMZ14202TZX-ADJ/NOPB

Output
0.8 ~ 6 V
Number Of Outputs
1
Power (watts)
12W
Mounting Type
Surface Mount
Voltage - Input
6 ~ 42 V
Package / Case
TO-PMOD-7, Power Module
1st Output
0.8 ~ 6 VDC @ 2A
Size / Dimension
0.40" L x 0.54" W x 0.18" H (10.16mm x 13.77mm x 4.57mm)
Power (watts) - Rated
12W
Operating Temperature
-40°C ~ 125°C
Efficiency
90%
Approvals
EN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
3rd Output
-
2nd Output
-
Lead Free Status / Rohs Status
Supplier Unconfirmed
Other names
LMZ14202TZX-ADJ
© 2010 National Semiconductor Corporation
2A SIMPLE SWITCHER® Power Module with 42V Maximum
Input Voltage
Electrical Specifications
Key Features
Applications
12W maximum total output power
Up to 2A output current
Input voltage range 6V to 42V
Output voltage range 0.8V to 6V
Efficiency up to 90%
Integrated shielded inductor
Simple PCB layout
Flexible startup sequencing using external soft-start 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 powering 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 enabled for Webench® Power Designer
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)
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
301145
30114586
LMZ14202
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
Low external component count
Radiated Emissions (EN 55022 Class B)
Efficiency V
Thermal derating curve
from Evaluation Board
V
IN
= 24V, V
IN
= 24V V
OUT
= 5.0V,
OUT
30114536
30114537
= 5.0V
30114539
June 10, 2010
www.national.com

Related parts for LMZ14202TZX-ADJ/NOPB

LMZ14202TZX-ADJ/NOPB Summary of contents

Page 1

... 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) © 2010 National Semiconductor Corporation LMZ14202 Performance Benefits ■ Operates at high ambient temperature with no thermal derating ■ ...

Page 2

... Simplified Application Schematic Connection Diagram Ordering Information Order Number LMZ14202TZ-ADJ LMZ14202TZX-ADJ LMZ14202TZE-ADJ Pin Descriptions Pin Name Description 1 VIN Supply input — Nominal operating range 42V . 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 6 FB Feedback — Internally connected to the regulation, over-voltage, and short-circuit comparators. The regulation reference point is 0.8V at this input pin. Connected the feedback resistor divider between the output and ground to set the output ...

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 ESD Susceptibility(Note 2) Electrical Characteristics junction temperature (T ) range of -40°C to +125°C. Minimum and Maximum limits are guaranteed through test, design or statistical J correlation ...

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 24V Input @ 25°C Efficiency 36V Input @ 25°C Efficiency 42V Input @ 25°C www.national.com Dissipation 24V Input @ 25°C 30114526 Dissipation 36V Input @ 25°C 30114529 Dissipation 42V Input @ 25°C 30114550 6 30114527 30114530 30114551 ...

Page 7

Efficiency 6V Input @ 85°C 30114533 Efficiency 8V Input 85°C 30114540 Efficiency 12V Input@ 85°C 30114542 Dissipation 6V Input @ 85°C Dissipation 8V Input 85°C Dissipation 12V Input @ 85°C 7 30114534 30114541 30114543 www.national.com ...

Page 8

Efficiency 24V Input @ 85°C Efficiency 36V Input @ 85°C Efficiency 42V Input @ 85°C www.national.com Dissipation 24V Input @ 85°C 30114544 Dissipation 36V Input @ 85°C 30114546 Dissipation 42V Input @ 85°C 30114552 8 30114545 30114547 30114553 ...

Page 9

Line and Load Regulation @ 25°C 30114548 Output Ripple 24V 3.3V 2A 200 MHz IN O 30114505 Thermal Derating V = 3.3V OUT 30114570 Line and Load Regulation @ 85°C Transient Response 24V 3.3V 0. Step ...

Page 10

Current Limit 3.3V Application Block Diagram COT Control Circuit Overview Constant On Time control is based on a comparator and an on-time one shot, with the output voltage feedback compared with an internal 0.8V reference. If the feedback voltage is ...

Page 11

This implements the feature of programmable under voltage lockout. This is often used in battery powered systems to prevent deep discharge of the system battery also useful in system designs for sequencing of output rails or to ...

Page 12

If Δ for a 24V input to 3.3V output application IN IN this equals 240 mV and f = 400 kHz. SW ≥ 3.3V/24V * (1– 3.3V/24V) / (400000 * 0.240 V) IN ...

Page 13

Given the typical thermal resistance from junction to case to be 1.9 °C/W. Use the 85°C power dissipation curves in the Typical Performance Characteristics section to estimate the P for the application being designed. In this application IC-LOSS it is ...

Page 14

Additional Features OUTPUT OVER-VOLTAGE COMPARATOR The voltage compared to a 0.92V internal reference rises above 0.92V the on-time is immediately terminat- ed. This condition is known as over-voltage protection (OVP). It can occur if the ...

Page 15

... ENT R 11.8 kΩ ENB C 22 nF, ±10%, X7R, 16V nF, ±10%, X7R, 16V SS Case Size Case Size TO-PMOD-7 National Semiconductor 1206 Taiyo Yuden 1210 Taiyo Yuden 1206 Taiyo Yuden 1210 Taiyo Yuden 0603 Vishay Dale 0603 Vishay Dale 0603 Vishay Dale ...

Page 16

www.national.com 16 30114516 30114517 ...

Page 17

Physical Dimensions inches (millimeters) unless otherwise noted 7-Lead TZA Package NS Package Number TZA07A 17 www.national.com ...

Page 18

... 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