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LMZ31503 数据表(PDF) 8 Page - Texas Instruments

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部件名 LMZ31503
功能描述  3A SIMPLE SWITCHER Power Module with 4.5V-14.5V Input in QFN Package
Download  29 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LMZ31503 数据表(HTML) 8 Page - Texas Instruments

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1000
10000
100000
400000
−40
−30
−20
−10
0
10
20
30
40
−120
−90
−60
−30
0
30
60
90
120
Frequency (Hz)
Gain
Phase
G000
0
0.4
0.8
1.2
1.6
2
0
0.5
1
1.5
2
2.5
3
Output Current (A)
VOUT = 5.0 V,fSW = 780 kHz
VOUT = 3.3 V,fSW = 630 kHz
VOUT = 2.5 V,fSW = 480 kHz
VOUT = 1.8 V,fSW = 480 kHz
VOUT = 1.2 V,fSW = 480 kHz
VOUT = 0.8 V,fSW = 330 kHz
G000
20
30
40
50
60
70
80
90
0
0.5
1
1.5
2
2.5
3
Output Current (A)
Natural Convection
All Output Voltages
G000
40
45
50
55
60
65
70
75
80
85
90
95
100
0
0.5
1
1.5
2
2.5
3
Output Current (A)
VOUT = 5.0 V,fSW = 780 kHz
VOUT = 3.3 V,fSW = 630 kHz
VOUT = 2.5 V,fSW = 480 kHz
VOUT = 1.8 V,fSW = 480 kHz
VOUT = 1.2 V,fSW = 480 kHz
VOUT = 0.8 V,fSW = 330 kHz
G000
10
20
30
40
50
60
70
80
0
0.5
1
1.5
2
2.5
3
Output Current (A)
VOUT = 5.0 V,fSW = 780 kHz
VOUT = 3.3 V,fSW = 630 kHz
VOUT = 2.5 V,fSW = 480 kHz
VOUT = 1.8 V,fSW = 480 kHz
VOUT = 1.2 V,fSW = 480 kHz
VOUT = 0.8 V,fSW = 330 kHz
G000
LMZ31503
SNVS992 – JULY 2013
www.ti.com
TYPICAL CHARACTERISTICS (PVIN = VIN = 12 V) (1) (2)
Figure 1. Efficiency vs. Output Current
Figure 2. Voltage Ripple vs. Output Current
Figure 3. Power Dissipation vs. Output Current
Figure 4. Safe Operating Area
Figure 5. VOUT= 1.8 V, IOUT= 3 A, COUT1= 100 µF ceramic, COUT2= 100 µF ceramic, fSW= 480 kHz
(1)
The electrical characteristic data has been developed from actual products tested at 25°C. This data is considered typical for the
converter. Applies to Figure 1, Figure 2, and Figure 3.
(2)
The temperature derating curves represent the conditions at which internal components are at or below the manufacturer's maximum
operating temperatures. Derating limits apply to devices soldered directly to a 100 mm × 100 mm double-sided PCB with 1 oz. copper.
Applies to Figure 4.
8
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Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: LMZ31503


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