LM2675M-5.0/NOPB National Semiconductor, LM2675M-5.0/NOPB Datasheet - Page 17

IC REG SIMPLE SWITCHER 8-SOIC

LM2675M-5.0/NOPB

Manufacturer Part Number
LM2675M-5.0/NOPB
Description
IC REG SIMPLE SWITCHER 8-SOIC
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Step-Down (Buck)r
Datasheets

Specifications of LM2675M-5.0/NOPB

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
5V
Current - Output
1A
Frequency - Switching
260kHz
Voltage - Input
6.5 ~ 40 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Package
8SOIC N
Minimum Input Voltage
8 V
Maximum Input Voltage
40 V
Switching Frequency
260(Typ) KHz
Operating Supply Voltage
6.5 to 40 V
Maximum Output Current
1 A
Output Type
Fixed
Output Voltage
5 V
Efficiency
90(Typ) %
Current, Input Bias
85 nA
Current, Output
1 A
Current, Supply
2.5 mA
Frequency, Oscillator
260 kHz
Package Type
SOIC
Regulator Type
Buck (Step-Down)
Temperature, Operating, Range
-40 to +125 °C
Voltage, Input
6.5 to 40 V
Voltage, Output
5 V
Primary Input Voltage
12V
No. Of Outputs
1
Output Current
1A
No. Of Pins
8
Operating Temperature Range
-40°C To +125°C
Msl
MSL 1 - Unlimited
Current Rating
1A
Rohs Compliant
Yes
For Use With
LM2675-5.0EVAL - EVALUATION BOARD FOR LM2675-5.0
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Lead Free Status / Rohs Status
RoHS Compliant part Electrostatic Device
Other names
*LM2675M-5.0
*LM2675M-5.0/NOPB
LM2675M-5.0
LM2675M5.0

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM2675M-5.0/NOPB
Manufacturer:
NS
Quantity:
200
Company:
Part Number:
LM2675M-5.0/NOPB
Quantity:
10 000
To simplify the buck regulator design procedure, National
Semiconductor is making available computer design software to
be used with the SIMPLE SWITCHER line of switching
regulators. LM267X Made Simple version 6.0 is available for
use on Windows 3.1, NT, or 95 operating systems.
Given:
1. Programming Output Voltage (Selecting R
shown in Figure 3)
Use the following formula to select the appropriate resistor
values.
Select a value for R
resistor values minimize noise pickup in the sensitive feedback
pin. (For the lowest temperature coefficient and the best stability
with time, use 1% metal film resistors.)
where V
LM2675 Series Buck Regulator Design Procedure (Fixed Output)
LM2675 Series Buck Regulator Design Procedure (Adjustable Output)
V
V
I
F = Switching Frequency (Fixed at a nominal 260 kHz).
LOAD
OUT
IN
(max) = Maximum Input Voltage
PROCEDURE (Adjustable Output Voltage Version)
(max) = Maximum Load Current
= Regulated Output Voltage
REF
= 1.21V
1
between 240Ω and 1.5 kΩ. The lower
Recommended
Application Voltage
Recommended
Application Voltage
1
and R
2
3.3
2.5
3.3
10
12
15
12
18
24
29
, as
5
5
8
Sprague 594D
+85˚C Rating
+85˚C Rating
FIGURE 15.
AVX TPS
17
Given:
1. Programming Output Voltage (Selecting R
shown in Figure 3)
Select R
R
R
2
2
V
V
I
F = Switching Frequency (Fixed at a nominal 260 kHz).
LOAD
= 1k (16.53 − 1) = 15.53 kΩ, closest 1% value is 15.4 kΩ.
= 15.4 kΩ.
OUT
IN
Voltage
Rating
Voltage
Rating
(max) = 28V
EXAMPLE (Adjustable Output Voltage Version)
(max) = 1A
= 20V
1
to be 1 kΩ, 1%. Solve for R
6.3
6.3
10
20
25
35
10
16
20
25
35
50
4
2
.
1
(Continued)
and R
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2
, as

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