LM2574MX-12/NOPB National Semiconductor, LM2574MX-12/NOPB Datasheet - Page 8
![IC REG SW 12V 500MA STPDN 14SOIC](/photos/6/60/66091/pkg_m14b_sml.jpg)
LM2574MX-12/NOPB
Manufacturer Part Number
LM2574MX-12/NOPB
Description
IC REG SW 12V 500MA STPDN 14SOIC
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Step-Down (Buck)r
Datasheet
1.LM2574MX-ADJNOPB.pdf
(24 pages)
Specifications of LM2574MX-12/NOPB
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
12V
Current - Output
500mA
Frequency - Switching
52kHz
Voltage - Input
4 ~ 40 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
14-SOIC (7.5mm Width)
Power - Output
750mW
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
*LM2574MX-12
*LM2574MX-12/NOPB
LM2574MX-12
*LM2574MX-12/NOPB
LM2574MX-12
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM2574MX-12/NOPB
Manufacturer:
NS
Quantity:
16 394
www.national.com
Typical Performance Characteristics
Feedback
Pin Current
Continuous Mode Switching Waveforms
V
Notes:
A: Output Pin Voltage, 10V/div
B: Inductor Current, 0.2 A/div
C: Output Ripple Voltage, 20 mV/div,
AC-Coupled
Horizontal Time Base: 5 µs/div
500 mA Load Transient Response for Continuous
Mode Operation. L = 330 µH, C
Notes:
A: Output Voltage, 50 mV/div.
AC Coupled
B: 100 mA to 500 mA Load Pulse
Horizontal Time Base: 200 µs/div
OUT
= 5V, 500 mA Load Current, L = 330 µH
OUT
= 300 µF
DS011394-39
DS011394-6
DS011394-8
(Circuit of Figure 2 ) (Continued)
Junction to Ambient
Thermal Resistance
Discontinuous Mode Switching Waveforms
V
Notes:
A: Output Pin Voltage, 10V/div
B: Inductor Current, 0.2 A/div
C: Output Ripple Voltage, 20 mV/div,
AC-Coupled
Horizontal Time Base: 5 µs/div
250 mA Load Transient Response for Discontinuous
Mode Operation. L = 68 µH, C
Notes:
A: Output Voltage, 50 mV/div.
AC Coupled
B: 50 mA to 250 mA Load Pulse
Horizontal Time Base: 200 µs/div
8
OUT
= 5V, 100 mA Load Current, L = 100 µH
OUT
= 470 µF
DS011394-40
DS011394-7
DS011394-9