LM2597M-12/NOPB National Semiconductor, LM2597M-12/NOPB Datasheet - Page 15
![IC REG SIMPLE SWITCHER 8-SOIC](/photos/7/60/76085/lm2597m-12_nopb_sml.jpg)
LM2597M-12/NOPB
Manufacturer Part Number
LM2597M-12/NOPB
Description
IC REG SIMPLE SWITCHER 8-SOIC
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Step-Down (Buck)r
Datasheet
1.LM2597M-3.3NOPB.pdf
(34 pages)
Specifications of LM2597M-12/NOPB
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
12V
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)
Supply Voltage Range
4.5V To 40V
Termination Type
SMD
Driver Case Style
NSOIC
No. Of Pins
8
Output Voltage Min
1.23V
Voltage Regulator Type
Buck Switching
Rohs Compliant
Yes
Filter Terminals
SMD
Input Voltage Primary Max
40V
Leaded Process Compatible
Yes
No. Of Outputs
1
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Other names
*LM2597M-12
*LM2597M-12/NOPB
LM2597M-12
*LM2597M-12/NOPB
LM2597M-12
LM2597/LM2597HV Series Buck Regulator Design Procedure (Adjustable
Output)
Voltage
Output
1.2
1 2
1 5
2 4
2 8
(V)
4
6
9
(Continued)
HFQ Series
Panasonic
220/25
180/25
(µF/V)
82/25
82/25
82/25
82/25
82/50
82/50
FIGURE 2. Output Capacitor and Feedforward Capacitor Selection Table
Through Hole Output Capacitor
Nichicon PL
Series
220/25
180/25
120/50
120/50
(µF/V)
82/25
82/25
82/25
82/25
Feedforward
Capacitor
820 pF
4.7 nF
4.7 nF
3.3 nF
2.2 nF
1.5 nF
1 nF
0
15
AVX TPS
220/10
100/10
100/10
100/16
100/16
Series
(µF/V)
68/20
10/35
10/35
Surface Mount Output Capacitor
595D Series
Sprague
220/10
120/10
120/10
100/16
100/16
100/20
(µF/V)
15/35
15/35
Feedforward
Capacitor
220 pF
220 pF
4.7 nF
4.7 nF
3.3 nF
2.2 nF
1.5 nF
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