LM2597M-5.0/NOPB National Semiconductor, LM2597M-5.0/NOPB Datasheet - Page 5

IC REG SIMPLE SWITCHER 8-SOIC

LM2597M-5.0/NOPB

Manufacturer Part Number
LM2597M-5.0/NOPB
Description
IC REG SIMPLE SWITCHER 8-SOIC
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Step-Down (Buck)r
Datasheet

Specifications of LM2597M-5.0/NOPB

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
5V
Current - Output
500mA
Frequency - Switching
150kHz
Voltage - Input
4.5 ~ 40 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Primary Input Voltage
12V
No. Of Outputs
1
Output Voltage
5V
Output Current
500mA
No. Of Pins
8
Operating Temperature Range
-40°C To +125°C
Supply Voltage Range
4.5V To 40V
Filter Terminals
SMD
Rohs Compliant
Yes
Input Voltage Primary Max
40V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Other names
*LM2597M-5.0
*LM2597M-5.0/NOPB
LM2597M-5.0

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM2597M-5.0/NOPB
Manufacturer:
TI/德州仪器
Quantity:
20 000
All Output Voltage Versions
Electrical Characteristics
Note 5: All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100%
production tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to
calculate Average Outgoing Quality Level (AOQL).
Note 6: External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the
LM2597/LM2597HV is used as shown in the Figure 12 test circuit, system performance will be as shown in system parameters section of Electrical Characteristics.
Note 7: The switching frequency is reduced when the second stage current limit is activated. The amount of reduction is determined by the severity of current
overload.
Note 8: No diode, inductor or capacitor connected to output pin.
Note 9: Feedback pin removed from output and connected to 0V to force the output transistor switch ON.
Note 10: Feedback pin removed from output and connected to 12V for the 3.3V, 5V, and the ADJ. version, and 15V for the 12V version, to force the output transistor
switch OFF.
Note 11: V
Note 12: Junction to ambient thermal resistance with approximately 1 square inch of printed circuit board copper surrounding the leads. Additional copper area will
lower thermal resistance further. See application hints in this data sheet and the thermal model in Switchers Made Simple
Typical Performance Characteristics
Normalized
Output Voltage
Switch Saturation
Voltage
IN
= 40V for the LM2597 and 60V for the LM2597HV.
DS012440-5
DS012440-2
(Continued)
Line Regulation
Switch Current Limit
5
DS012440-6
DS012440-3
Efficiency
Dropout Voltage
software.
www.national.com
DS012440-4
DS012440-7

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