lm2597hvn-5.0 National Semiconductor Corporation, lm2597hvn-5.0 Datasheet - Page 3

• Manufacturer Part Number: lm2597hvn-5.0
• Description: Simple Switcher Power Converter 150 Khz 0.5a Step-down Voltage Regulator, With Features
• Manufacturer: National Semiconductor Corporation

Symbol
Symbol
SYSTEM PARAMETERS (Note 6) Test Circuit Figure 12
V
Symbol
SYSTEM PARAMETERS (Note 6) Test Circuit Figure 12
V
DEVICE PARAMETERS
I
f
V
DC
I
I
I
b
O
CL
L
Q
Specifications with standard type face are for T
ture Range.V
Specifications with standard type face are for T
ture Range.V
LM2597/LM2597HV-ADJ
Electrical Characteristics
FB
All Output Voltage Versions
Electrical Characteristics
Specifications with standard type face are for T
ture Range. Unless otherwise specified, V
sion. I
SAT
OUT
LM2597/LM2597HV-12
Electrical Characteristics
LOAD
Feedback Voltage
Efficiency
Feedback Bias Current
Oscillator Frequency
Saturation Voltage
Max Duty Cycle (ON)
Min Duty Cycle (OFF)
Current Limit
Output Leakage Current
Operating Quiescent
Output Voltage
Efficiency
= 100 mA.
INmax
INmax
Parameter
Parameter
Parameter
=40V for the LM2597 and 60V for the LM2597HV
=40V for the LM2597 and 60V for the LM2597HV
4.5V
V
V
15V
V
OUT
IN
IN
= 12V, V
= 25V, I
programmed for 3V. Circuit of Figure 12 .
Adjustable Version Only, V
(Note 7)
I
(Note 9)
(Note 10)
Peak Current, (Notes 8 and 9)
(Notes 8, 10 and 11)
Output = −1V
SD /SS Pin Open, V
OUT
V
V
IN
IN
IN
= 0.5A (Notes 8 and 9)
= 12V for the 3.3V, 5V, and Adjustable version and V
OUT
LOAD
V
V
J
J
J
INmax
INmax
= 25˚C, and those with boldface type apply over full Operating Tempera-
= 25˚C, and those with boldface type apply over full Operating Tempera-
= 25˚C, and those with boldface type apply over full Operating Tempera-
Conditions
= 3V, I
= 0.5A
Conditions
, 0.1A
, 0.1A
Conditions
LOAD
BS
I
I
LOAD
LOAD
Pin Open(Note 10)
= 0.5A
3
FB
Output = 0V
= 1.235V
0.5A
0.5A
(Note 4)
Typ
LM2597/LM2597HV-12
12
88
(Note 4)
LM2597/LM2597HV-ADJ
LM2597/LM2597HV-XX
1.230
(Note 4)
Typ
80
Typ
150
100
0.9
0.8
10
0
2
5
IN
11.52/11.40
12.48/12.60
(Note 5)
= 24V for the 12V ver-
Limit
1.193/1.180
1.267/1.280
0.65/0.58
(Note 5)
127/110
173/173
(Note 5)
50/100
1.1/1.2
1.3/1.4
Limit
Limit
50
15
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kHz(max)
kHz(min)
mA(max)
(Limits)
µA(max)
(Limits)
V(max)
V(min)
V(max)
A(max)
A(min)
Units
(Limits)
V(max)
Units
V(min)
Units
kHz
mA
mA
nA
%
V
%
V
A
%
V