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부품번호 | LMZ23605 기능 |
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기능 | 5A SIMPLE SWITCHER Power Module | ||
제조업체 | National Semiconductor | ||
로고 | |||
전체 22 페이지수
LMZ23605
April 5, 2011
5A SIMPLE SWITCHER® Power Module with 36V 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
30116986
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 (Note 6)
RoHS Compliant
Electrical Specifications
■ 30W maximum total output power
■ Up to 5A output current
■ Input voltage range 6V to 36V
■ 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 and standard pinout for easy
mounting and manufacturing
■ Fast transient response for powering FPGAs and ASICs
■ Fully enabled for Webench® Power Designer
■ Pin compatible with LMZ22005/LMZ23603/LMZ22003
Applications
■ 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
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
30116903
Thermal derating curve
www.DataSheet.net/
VIN = 12V VOUT = 5.0V
6
5
4
3
2
1
θJA=12°C/W
0
30 40 50 60 70 80 90 100 110 120 130
AMBIENT TEMPERATURE (°C)
30116989
Radiated EMI (EN 55022)
of Demo Board (See AN–2125)
50
45
40
35
30
25
20
15
10
5
0
0
Class A Limit
Class B Limit
Horiz Peak
Horiz Quasi-peak
200 400 600 800 1000
FREQUENCY (MHz)
30116995
© 2011 National Semiconductor Corporation 301169
www.national.com
Datasheet pdf - http://www.DataSheet4U.co.kr/
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 40V
-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 36V
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 input hysteresis current
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
fsync
VIL-sync
Free-running oscillator
frequency
Synchronization range
Synchronization logic zero
amplitude
Sync input connected to ground.
www.DataSheet.net/
Relative to AGND
711 812 914 kHz
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
12.0 °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
Datasheet pdf - http://www.DataSheet4U.co.kr/
4페이지 Efficiency 3.3V output @ 25°C ambient
100
90
80
70
60
50
40
0
9 Vin
12 Vin
20 Vin
24 Vin
30 Vin
36 Vin
1234
OUTPUT CURRENT (A)
5
30116954
Efficiency 2.5V output @ 25°C ambient
90
80
70
60
50
40
30
0
6 Vin
9 Vin
12 Vin
20 Vin
24 Vin
30 Vin
36 Vin
1234
OUTPUT CURRENT (A)
5
30116956
Efficiency 1.8V output @ 25°C ambient
90
80
70
60
50
40
30
0
6 Vin
9 Vin
12 Vin
20 Vin
24 Vin
30 Vin
36 Vin*
1234
OUTPUT CURRENT (A)
5
30116958
Dissipation 3.3V output @ 25°C ambient
7 36 Vin
30 Vin
6 24 Vin
20 Vin
5
12 Vin
9 Vin
4
3
2
1
0
012345
OUTPUT CURRENT (A)
30116955
Dissipation 2.5V output @ 25°C ambient
7 36 Vin
30 Vin
6 24 Vin
20 Vin
5
12 Vin
9 Vin
6 Vin
4
3
2
1
www.DataSheet.net/
0
0
1234
OUTPUT CURRENT (A)
5
30116957
Dissipation 1.8V output @ 25°C ambient
7 36 Vin*
30 Vin
6 24 Vin
20 Vin
5
12 Vin
9 Vin
6 Vin
4
3
2
1
0
012345
OUTPUT CURRENT (A)
30116959
7 www.national.com
Datasheet pdf - http://www.DataSheet4U.co.kr/
7페이지 | |||
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DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |