參數(shù)資料
型號： LM2595T-ADJ
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator
中文描述： 2.6 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, PZFM5
封裝： BENT STAGGERED, TO-220, 5 PIN
文件頁數(shù)： 11/29頁
文件大小： 935K
代理商： LM2595T-ADJ
LM2595 Series Buck Regulator Design Procedure (Fixed Output)
(Continued)
LM2595 Series Buck Regulator Design Procedure (Adjustable Output)
PROCEDURE (Adjustable Output Voltage Version)
EXAMPLE (Adjustable Output Voltage Version)
Given:
V
OUT
= Regulated Output Voltage
V
IN
(max) = Maximum Input Voltage
I
LOAD
(max) = Maximum Load Current
F = Switching Frequency (Fixed at a nominal 150 kHz).
Given:
V
OUT
= 20V
V
IN
(max) = 28V
I
LOAD
(max) = 1A
F = Switching Frequency (Fixed at a nominal 150 kHz).
1. Programming Output Voltage
(Selecting R
1
and R
2
, as
shown in Figure 1)
Use the following formula to select the appropriate resistor
values.
Select a value for R
between 240
and 1.5 k
. The lower
resistor values minimize noise pickup in the sensitive feed-
back pin. (For the lowest temperature coefficient and the best
stability with time, use 1% metal film resistors.)
1. Programming Output Voltage (Selecting R
1
and R
2
, as
shown in
Figure 1
)
Select R
1
to be 1 k
, 1%. Solve for R
2
.
R
2
= 1k (16.26 1) = 15.26k, closest 1% value is 15.4 k
.
R
2
= 15.4 k
.
Procedure continued on next page.
Example continued on next page.
Conditions
Inductor
Output Capacitor
Through Hole Electrolytic
Panasonic
HFQ Series
(μF/V)
330/16
270/25
220/25
180/35
220/25
150/35
150/35
330/16
220/25
180/35
180/35
180/16
120/25
100/25
220/25
180/35
82/25
82/25
180/25
82/25
56/25
Surface Mount Tantalum
AVX TPS
Series
(μF/V)
220/10
220/10
220/10
220/10
220/10
100/16
100/16
220/10
220/10
220/10
100/16
220/10
100/16
68/20
68/20
68/20
68/20
68/20
68/20
68/20
68/20
Output
Voltage
(V)
Load
Current
(A)
Max Input
Voltage
(V)
5
7
10
40
6
10
40
8
10
15
40
9
20
40
15
18
30
40
15
20
40
Inductance
(μH)
Inductor
(
#
)
Nichicon
PL Series
(μF/V)
330/16
270/25
220/35
220/35
220/16
150/25
82/35
330/16
220/25
180/35
120/35
180/16
1200/25
100/25
220/25
120/25
82/25
82/25
180/25
82/25
56/25
Sprague
595D Series
(μF/V)
330/10
270/10
220/10
180/10
220/10
150/16
100/20
270/10
220/10
150/16
120/16
150/16
100/20
68/25
120/20
120/20
100/20
68/25
120/20
100/20
68/25
3.3
1
22
33
47
68
47
68
100
33
47
68
100
68
150
150
47
68
150
220
68
150
330
L24
L23
L31
L30
L13
L21
L20
L28
L31
L30
L29
L21
L19
L19
L31
L30
L36
L35
L21
L19
L26
0.5
5
1
0.5
12
1
0.5
FIGURE 2. LM2595 Fixed Voltage Quick Design Component Selection Table
www.national.com
11
相關(guān)PDF資料
PDF描述
LM2595S-12 Octal Buffers/Drivers With 3-State Outputs 20-SOIC -40 to 85
LM2595S-3.3 Octal Buffers/Drivers With 3-State Outputs 20-PDIP -40 to 85
LM2595S-ADJ Octal Buffers/Drivers With 3-State Outputs 20-PDIP -40 to 85
LM2595S-5.0 SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator
LM2595J-ADJ-QML(5962-9650 Circular Connector; No. of Contacts:18; Series:LJT06R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:15-18
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM2595T-ADJ 0135 制造商:Texas Instruments 功能描述:Conv DC-DC Single Inv/Step Down 4.5V to 40V 5-Pin(5+Tab) TO-220 Rail
LM2595T-ADJ 制造商:Texas Instruments 功能描述:SWITCHING REG 1A ADJ 2595 TO2205
LM2595T-ADJ/LB02 制造商:Texas Instruments 功能描述:Conv DC-DC Single Inv/Step Down 4.5V to 40V 5-Pin(5+Tab) TO-220 Rail
LM2595T-ADJ/LB05 制造商:Texas Instruments 功能描述:Conv DC-DC Single Inv/Step Down 4.5V to 40V 5-Pin(5+Tab) TO-220 Rail
LM2595T-ADJ/LF02 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT
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