lm2599sx-5.0 National Semiconductor Corporation, lm2599sx-5.0 Datasheet - Page 3

• Manufacturer Part Number: lm2599sx-5.0
• Description: Simple Switcher Power Converter 150 Khz 3a Step-down Voltage Regulator, With Features
• Manufacturer: National Semiconductor Corporation

Symbol
SYSTEM PARAMETERS (Note 6) Test Circuit Figure 1
V
DEVICE PARAMETERS
I
f
V
DC
I
I
Symbol
SYSTEM PARAMETERS (Note 6) Test Circuit Figure 1
V
Symbol
b
O
CL
L
Specifications with standard type face are for T
ture Range.
FB
Specifications with standard type face are for T
ture Range. Unless otherwise specified, V
sion. I
SAT
LM2599-12
Electrical Characteristics
LM2599-ADJ
Electrical Characteristics
All Output Voltage Versions
Electrical Characteristics
Specifications with standard type face are for T
ture Range.
OUT
LOAD
Feedback Voltage
Efficiency
Feedback Bias Current
Oscillator Frequency
Saturation Voltage
Current Limit
Output Leakage Current
Max Duty Cycle (ON)
Min Duty Cycle (OFF)
Output Voltage
Efficiency
= 500 mA
Parameter
Parameter
Parameter
4.5V
V
V
OUT
IN
15V
V
= 12V, V
IN
programmed for 3V. Circuit of Figure 1 .
V
= 25V, I
IN
V
IN
IN
Adjustable Version Only, V
(Note 7)
I
(Note 9)
(Note 10)
Peak Current, (Note 8) (Note 9)
(Note 8) (Note 10) (Note 11)
OUT
OUT
40V, 0.2A
= 12V for the 3.3V, 5V, and Adjustable version and V
J
LOAD
J
J
40V, 0.2A
= 25˚C, and those with boldface type apply over full Operating Tempera-
= 3V, I
= 25˚C, and those with boldface type apply over full Operating Tempera-
= 3A (Note 8) (Note 9)
= 25˚C, and those with boldface type apply over full Operating Tempera-
Conditions
Conditions
= 3A
LOAD
I
LOAD
I
LOAD
= 3A
Conditions
3
3A
3A
FB
= 1.3V
Output = 0V
Output = −1V
(Note 4)
Typ
12
90
(Note 4)
1.230
Typ
73
LM2599-12
LM2599-ADJ
(Note
1.16
Typ
150
100
4.5
10
4)
IN
0
2
11.52/11.40
12.48/12.60
LM2599-XX
(Note 5)
= 24V for the 12V ver-
1.193/1.180
1.267/1.280
Limit
(Note 5)
Limit
(Note 5)
127/110
173/173
50/100
1.4/1.5
3.6/3.4
6.9/7.5
Limit
50
30
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(Limits)
kHz(max)
V(max)
nA (max)
mA(max)
kHz(min)
V(min)
(Limits)
µA(max)
(Limits)
Units
V(max)
V(max)
A(max)
V(min)
A(min)
Units
Units
%
kHz
V
mA
nA
%
V
%
V
A