LMZ12003 반도체 회로 부품 판매점
Power Module
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 National Semiconductor |
DataSheet.in
LMZ12003
April 12, 2010
3A SIMPLE SWITCHER® Power Module with 20V Maximum
Input Voltage
Easy to use 7 pin package
Performance Benefits
■ 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
TO-PMOD 7 Pin Package
30109086
10.16 x 13.77 x 4.57 mm (0.4 x 0.542 x 0.18 in)
θJA = 20°C/W, θJC = 1.9°C/W
RoHS Compliant
System Performance
Efficiency VIN = 12V VOUT = 5.0V
Electrical Specifications
■ 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%
Key Features
■ 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
Applications
■ 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)
30109018
Thermal derating curve
VIN = 12V VOUT = 5.0V
30109019
Radiated Emissions (EN 55022 Class B)
from Evaluation Board
© 2010 National Semiconductor Corporation 301090
30109050
www.national.com
DataSheet.in
Simplified Application Schematic
Connection Diagram
30109001
Top View
7-Lead TO-PMOD
30109009
Ordering Information
Order Number
LMZ12003TZ-ADJ
LMZ12003TZX-ADJ
LMZ12003TZE-ADJ
Package Type
TO-PMOD-7
TO-PMOD-7
TO-PMOD-7
NSC Package Drawing
TZA07A
TZA07A
TZA07A
Supplied As
250 Units on Tape and Reel
500 Units on Tape and Reel
45 Units in a Rail
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.
2 RON On Time Resistor — An external resistor from VIN to this pin sets the on-time of the application. Typical values range
from 25k to 124k ohms.
3 EN Enable — Input to the precision enable comparator. Rising threshold is 1.18V nominal; 90 mV hysteresis nominal.
Maximum recommended input level is 6.5V.
4 GND Ground — Reference point for all stated voltages. Must be externally connected to EP.
5 SS Soft-Start — An internal 8 µA current source charges an external capacitor to produce the soft-start function. This node
is discharged at 200 µA during disable, over-current, thermal shutdown and internal UVLO conditions.
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 voltage.
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
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