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| 型號(hào)： | LM2593HVT-ADJ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SIMPLE SWITCHER Power Converter 150 kHz 2A Step-Down Voltage Regulator, with Features |
| 中文描述： | 4 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, PZFM7 |
| 封裝： | TO-220, 7 PIN |
| 文件頁(yè)數(shù)： | 3/21頁(yè) |
| 文件大?。?/td> | 753K |
| 代理商： | LM2593HVT-ADJ |
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LM2593HV-ADJ
Electrical Characteristics
(Continued)
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
LM2593HV-ADJ
Typ
(Note 4)
75
Units
(Limits)
Limit
(Note 5)
η
Efficiency
V
IN
= 12V, V
OUT
= 3V, I
LOAD
= 2A
%
All Output Voltage Versions
Electrical Characteristics
Specifications with standard type face are for T
= 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. I
LOAD
= 500 mA
Symbol
Parameter
Conditions
LM2593HV-XX
Typ
(Note 4)
Units
(Limits)
Limit
(Note 5)
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 7)
150
127/
110
173/
173
V
SAT
Saturation Voltage
I
OUT
= 2A (Note 8) (Note 9)
1.10
1.3/
1.4
DC
Max Duty Cycle (ON)
Min Duty Cycle (OFF)
Switch current Limit
(Note 9)
(Note 10)
Peak Current, (Note 8) (Note 9)
100
0
3.0
I
CLIM
A
2.4/
2.3
3.7/
4.0
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
(Note 8) (Note 10) (Note 11)
Output = 0V
Output = 1V
5
30
I
Q
Operating Quiescent
Current
Standby Quiescent
Current
Thermal Resistance
SD /SS Pin Open (Note 10)
5
10
I
STBY
SD /SS pin = 0V
(Note 11)
90
200/
250
θ
JC
θ
JA
θ
JA
θ
JA
θ
JA
SHUTDOWN/SOFT-START CONTROL
Test Circuit of Figure 1
V
SD
Shutdown Threshold
Voltage
TO220 or TO263 Package, Junction to Case
TO220 Package, Juncton to Ambient (Note 12)
TO263 Package, Juncton to Ambient (Note 13)
TO263 Package, Juncton to Ambient (Note 14)
TO263 Package, Juncton to Ambient (Note 15)
2
50
50
30
20
1.3
V
Low, (Shutdown Mode)
High, (Soft-start Mode)
V
OUT
= 20% of Nominal Output Voltage
V
OUT
= 100% of Nominal Output Voltage
V
SHUTDOWN
= 0.5V
0.6
2
V(max)
V(min)
V
V
SS
Soft-start Voltage
2
3
5
I
SD
Shutdown Current
μA
10
μA(max)
μA
μA(max)
I
SS
Soft-start Current
V
Soft-start
= 2.5V
1.5
5
L
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