參數(shù)資料
型號： LM2596S-12
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： CA-BAYONET
中文描述： 7.5 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, PSSO5
封裝： TO-263, SMT-5
文件頁數(shù)： 4/31頁
文件大小： 736K
代理商： LM2596S-12
LM2596-ADJ
Electrical Characteristics
Specifications with standard type face are for T
J
= 25C, and those with
boldface type
apply over
full Operating Tempera-
ture Range
Symbol
Parameter
Conditions
LM2596-ADJ
Units
(Limits)
Typ
(Note 3)
Limit
(Note 4)
SYSTEM PARAMETERS
(Note 5) Test Circuit Figure 1
V
FB
Feedback Voltage
4.5V
≤
V
IN
≤
40V, 0.2A
≤
I
LOAD
≤
3A
V
OUT
programmed for 3V. Circuit of Figure 1
1.230
V
1.193/
1.180
1.267/
1.280
V(min)
V(max)
%
η
Efficiency
V
IN
= 12V, V
OUT
= 3V, I
LOAD
= 3A
73
All Output Voltage Versions
Electrical Characteristics
Specifications with standard type face are for T
J
= 25C, and those with
boldface type
apply over
full Operating Tempera-
ture Range
. Unless otherwise specified, V
IN
= 12V for the 3.3V, 5V, and Adjustable version and V
IN
= 24V for the 12V ver-
sion. I
LOAD
= 500 mA
Symbol
Parameter
Conditions
LM2596-XX
Typ
(Note 3)
Units
(Limits)
Limit
(Note 4)
DEVICE PARAMETERS
I
b
Feedback Bias Current
Adjustable Version Only, V
FB
= 1.3V
10
nA
50/
100
nA (max)
kHz
kHz(min)
kHz(max)
V
V(max)
%
f
O
Oscillator Frequency
(Note 6)
150
127/
110
173/
173
V
SAT
Saturation Voltage
I
OUT
= 3A (Notes 7, 8)
1.16
1.4/
1.5
DC
Max Duty Cycle (ON)
Min Duty Cycle (OFF)
Current Limit
(Note 8)
(Note 9)
Peak Current (Notes 7, 8)
100
0
4.5
I
CL
A
3.6/
3.4
6.9/
7.5
50
A(min)
A(max)
μA(max)
mA
mA(max)
mA
mA(max)
μA
μA(max)
C/W
C/W
C/W
C/W
C/W
I
L
Output Leakage Current
Output = 0V (Notes 7, 9)
Output = 1V (Note 10)
2
30
I
Q
Quiescent Current
(Note 9)
5
10
I
STBY
Standby Quiescent Current
ON/OFF pin = 5V (OFF)
(Note 10)
80
200/
250
θ
JC
θ
JA
θ
JA
θ
JA
θ
JA
ON/OFF CONTROL
Test Circuit Figure 1
ON /OFF Pin Logic Input
V
IH
Threshold Voltage
V
IL
Thermal Resistance
TO-220 or TO-263 Package, Junction to Case
TO-220 Package, Junction to Ambient (Note 11)
TO-263 Package, Junction to Ambient (Note 12)
TO-263 Package, Junction to Ambient (Note 13)
TO-263 Package, Junction to Ambient (Note 14)
2
50
50
30
20
1.3
V
Low (Regulator ON)
High (Regulator OFF)
0.6
2.0
V(max)
V(min)
L
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相關代理商/技術參數(shù)
參數(shù)描述
LM2596S12 制造商:Texas Instruments 功能描述:IC SWITCHING REG 3A 12V SMD 2596
LM2596S-12/NOPB 功能描述:直流/直流開關轉換器 150 KHZ 3A STEP-DOWN VLTG REG RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率: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
LM2596S-3.3 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率: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
LM2596S3.3/NOPB 制造商:Texas Instruments 功能描述:Bulk
LM2596S-3.3/NOPB 功能描述:直流/直流開關轉換器 150 KHZ 3A STEP-DOWN VLTG REG RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率: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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