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LMZ22005 데이터시트 PDF




National Semiconductor에서 제조한 전자 부품 LMZ22005은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 LMZ22005 자료 제공

부품번호 LMZ22005 기능
기능 5A SIMPLE SWITCHER Power Module
제조업체 National Semiconductor
로고 National Semiconductor 로고


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LMZ22005 데이터시트, 핀배열, 회로
LMZ22005
April 5, 2011
5A SIMPLE SWITCHER® Power Module with 20V Maximum
Input Voltage
Easy to use 7 pin package
Performance Benefits
High efficiency reduces system heat generation
Complies with EN55022 Class B(Note 5)
Low component count, only 5 external components
Low output voltage ripple
Uses PCB as heat sink, no airflow required
TO-PMOD 7 Pin Package
30132986
10.16 x 13.77 x 4.57 mm (0.4 x 0.542 x 0.18 in)
θJA = 12°C/W, θJC = 1.9°C/W
RoHS Compliant
Electrical Specifications
30W maximum total output power
Up to 5A output current
Input voltage range 6V to 20V
Output voltage range 0.8V to 6V
Efficiency up to 92%
Key Features
Integrated shielded inductor
Simple PCB layout
Frequency synchronization input (650 kHz to 950 kHz)
Flexible startup sequencing using external soft-start,
tracking 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 for easy mounting and manufacturing
Fast transient response for powering FPGAs and ASICs
Fully enabled for Webench® Power Designer
Pin compatible with LMZ23605/LMZ23603/LMZ22003
Applications
Point of load conversions from 12V input rail
Time critical projects
Space constrained / high thermal requirement applications
Negative output voltage applications (see AN-2027)
System Performance
Efficiency VIN = 12V VOUT = 5.0V
100
90
80
70
60
50
40
30
20
10
0
0
1234
OUTPUT CURRENT (A)
5
4
3
2
1
0
5
Thermal derating curve
VIN = 12V VOUT = 5.0V
6
30132903
5
4
3
2
1
θJA=12°C/W
0
30 40 50 60 70 80 90 100 110 120 130
AMBIENT TEMPERATURE (°C)
30132989
Radiated EMI (EN 55022)
of Demo Board (See AN-2125)
50
40
30
20
10
0
0
Class A Limit
Class B Limit
Horiz Peak
Horiz Quasi-Peak
200 400 600 800 1000
FREQUENCY (MHz)
30132950
© 2011 National Semiconductor Corporation 301329
www.national.com
Free Datasheet http://www.datasheet4u.com/




LMZ22005 pdf, 반도체, 판매, 대치품
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
VIN to PGND
EN, SYNC to AGND
SS/TRK, FB to AGND
AGND to PGND
Junction Temperature
Storage Temperature Range
-0.3V to 24V
-0.3V to 5.5V
-0.3V to 2.5V
-0.3V to 0.3V
150°C
-65°C to 150°C
ESD Susceptibility(Note 2)
For soldering specifications:
see product folder at www.national.com and
www.national.com/ms/MS/MS-SOLDERING.pdf
± 2 kV
Operating Ratings (Note 1)
VIN
EN, SYNC
Operation Junction Temperature
6V to 20V
0V to 5.0V
−40°C to 125°C
Electrical Characteristics Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the
junction temperature (TJ) range of -40°C to +125°C. Minimum and Maximum limits are guaranteed through test, design or statistical
correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only.
Unless otherwise stated the following conditions apply: VIN = 12V, Vout = 3.3V
Symbol Parameter
Conditions
Min
(Note 3)
Typ
(Note 4)
Max
(Note 3)
Units
SYSTEM PARAMETERS
Enable Control
VEN
VEN-HYS
Soft-Start
EN threshold trip point
EN hysteresis
VEN rising
VEN > 1.279V
1.10
1.279 1.458
V
21 µA
ISS
tSS
Current Limit
SS source current
Internal soft-start interval
VSS = 0V
40 50 60 µA
1.6 msec
ICL Current limit threshold
Internal Switching Oscillator
d.c. average
5.4 A
fosc Free-running oscillator
frequency
Sync input connected to ground.
711 812 914 kHz
fsync
VIL-sync
Synchronization range
Synchronization logic zero
amplitude
Relative to AGND
650 950 kHz
0.4 V
VIH-sync
Synchronization logic one
amplitude
Relative to AGND
1.5
V
Sync d.c.
Synchronization duty cycle
range
15 50 85 %
Dmax
Maximum Duty Factor
Regulation and Over-Voltage Comparator
83 %
VFB
VFB-OV
In-regulation feedback voltage
Feedback over-voltage
protection threshold
VSS >+ 0.8V
IO = 5A
0.776
0.796 0.816
0.86
V
V
IFB Feedback input bias current
IQ Non Switching Input Current
ISD Shut Down Quiescent Current
Thermal Characteristics
VFB= 0.86V
VEN= 0V
5 nA
2.6 mA
70 μA
TSD
TSD-HYST
θJA
Thermal Shutdown
Thermal shutdown hysteresis
Junction to Ambient(Note 6)
Rising
Falling
4 layer Evaluation Printed Circuit Board,
60 vias, No air flow
165 °C
15 °C
19.3 °C/W
2 layer JEDEC Printed Circuit Board, No
air flow
21.5 °C/W
θJC Junction to Case
No air flow
1.9 °C/W
www.national.com
4
Free Datasheet http://www.datasheet4u.com/

4페이지










LMZ22005 전자부품, 판매, 대치품
Efficiency 3.3V output @ 25°C ambient
100
90
80
70
60
50
40
0
9 Vin
12 Vin
20 Vin
1234
OUTPUT CURRENT (A)
5
30132954
Efficiency 2.5V output @ 25°C ambient
90
80
70
60
50
40
30
0
6 Vin
9 Vin
12 Vin
20 Vin
1234
OUTPUT CURRENT (A)
5
30132956
Efficiency 1.8V output @ 25°C ambient
90
80
70
60
50
40
30
0
6 Vin
9 Vin
12 Vin
20 Vin
1234
OUTPUT CURRENT (A)
5
30132958
Dissipation 3.3V output @ 25°C ambient
6 20 Vin
12 Vin
5
9 Vin
6 Vin
4
3
2
1
0
012345
OUTPUT CURRENT (A)
30132955
Dissipation 2.5V output @ 25°C ambient
6 20 Vin
12 Vin
5
9 Vin
6 Vin
4
3
2
1
0
012345
OUTPUT CURRENT (A)
30132957
Dissipation 1.8V output @ 25°C ambient
6 20 Vin
12 Vin
5
9 Vin
6 Vin
4
3
2
1
0
012345
OUTPUT CURRENT (A)
30132959
7 www.national.com
Free Datasheet http://www.datasheet4u.com/

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