LM2598S-ADJ/NOPB National Semiconductor, LM2598S-ADJ/NOPB Datasheet - Page 3

• Manufacturer Part Number: LM2598S-ADJ/NOPB
• Description: IC REG SW ADJ 1A STP DN TO263-7
• Manufacturer: National Semiconductor
• Series: SIMPLE SWITCHER®r
• Type: Step-Down (Buck)r

Specifications of LM2598S-ADJ/NOPB

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.2 ~ 37 V
• Current - Output: 1A
• Frequency - Switching: 150kHz
• Voltage - Input: 4.5 ~ 40 V
• Operating Temperature: -25°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: D²Pak, TO-263 (7 leads + tab)
• Package: 8TO-263
• Minimum Input Voltage: 4.5 V
• Maximum Input Voltage: 40 V
• Switching Frequency: 173 KHz
• Operating Supply Voltage: 4.5 to 40 V
• Maximum Output Current: 1 A
• Output Type: Adjustable
• Output Voltage: 1.2 to 37 V
• Efficiency: 78(Typ) %
• For Use With: 551011367-011 - BOARD WEBENCH BUILD IT LM2598
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: *LM2598S-ADJ; *LM2598S-ADJ/NOPB; LM2598S-ADJ

Symbol
SYSTEM PARAMETERS (Note 6) Test Circuit Figure 1
V
SYSTEM PARAMETERS (Note 6) Test Circuit Figure 1
V
SYSTEM PARAMETERS (Note 6) Test Circuit Figure 1
V
Symbol
Symbol
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Maximum Supply Voltage (V
SD/SS Pin Input Voltage (Note 2)
Delay Pin Voltage (Note 2)
Flag Pin Voltage
Feedback Pin Voltage
Output Voltage to Ground
Power Dissipation
Storage Temperature Range
LM2598-3.3
Electrical Characteristics
Specifications with standard type face are for T
ture Range.
LM2598-5.0
Electrical Characteristics
Specifications with standard type face are for T
ture Range.
OUT
LM2598-12
Electrical Characteristics
OUT
Specifications with standard type face are for T
ture Range.
OUT
(Steady State)
Output Voltage
Efficiency
Output Voltage
Efficiency
Output Voltage
Efficiency
Parameter
Parameter
Parameter
IN
)
4.75V
V
15V
V
7V
V
IN
IN
IN
= 12V, I
= 25V, I
= 12V, I
V
V
IN
V
IN
−65˚C to +150˚C
−0.3
−0.3
IN
Internally limited
LOAD
40V, 0.1A
LOAD
(Note 1)
J
J
LOAD
J
40V, 0.1A
40V, 0.1A
= 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
Conditions
Conditions
V
V
= 1A
= 1A
= 1A
+45V
+25V
1.5V
45V
−1V
6V
I
LOAD
I
LOAD
I
LOAD
3
ESD Susceptibility
Lead Temperature
Maximum Junction Temperature
Operating Conditions
Temperature Range
Supply Voltage
1A
1A
Human Body Model (Note 3)
S Package
T Package (Soldering, 10 sec.)
1A
Vapor Phase (60 sec.)
Infrared (10 sec.)
(Note 4)
(Note 4)
(Note 4)
Typ
Typ
82
12
90
Typ
5
3.3
78
LM2598-5.0
LM2598-12
LM2598-3.3
4.800/4.750
5.200/5.250
11.52/11.40
12.48/12.60
3.168/3.135
3.432/3.465
(Note 5)
(Note 5)
(Note 5)
Limit
Limit
Limit
−25˚C
T
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4.5V to 40V
J
(Limits)
(Limits)
(Limits)
V(max)
V(max)
V(max)
V(min)
V(min)
V(min)
Units
Units
Units
+215˚C
+245˚C
+260˚C
+150˚C
+125˚C
%
%
%
V
V
V
2 kV