LM2575-12BN Micrel Inc, LM2575-12BN Datasheet - Page 7

• Manufacturer Part Number: LM2575-12BN
• Description: IC REG BUCK 1A 12V 16-DIP
• Manufacturer: Micrel Inc
• Type: Step-Down (Buck)r

Specifications of LM2575-12BN

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 12V
• Current - Output: 1A
• Frequency - Switching: 42kHz ~ 63kHz
• Voltage - Input: 4 ~ 40 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 16-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

Typical Characteristics
Micrel, Inc.
May 2009
-100
100
-25
-50
-75
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
20
18
16
14
12
10
75
50
25
8
6
4
3
2
1
0
-75
0
0
-75 -50 -25 0
-75 -50 -25 0
0
-50 -25 0 25 50 75 100125 150
Minimum Operating
10
Supply Current
Output Voltage
Current Limit
INPUT VOLTAGE ( V)
Normalized
I
Normalized to T
LO AD
20
Voltage
I
LO AD
25 50 75 100125150
25 50 75 100125150
I L OAD = 200 mA
to 1A
30
V
V O U T = 1.23V
IN
Measured at
Ground Pin
V
T J
= 200mA
= 12V
OUT
40
V
(circuit of Figure 1)
IN
J
= 5V
= 25V
= 25 C
50
60
20.0
17.5
15.0
12.5
10.0
0.4
7.5
5.0
2.0
1.2
1.0
0.8
0.6
14
12
10
--6
-2
-4
-6
+8
+6
+4
+2
-2
-4
-8
0
8
6
4
2
0
0
-75
0
0
0
125 C
150 C
-55 C
-40 C
Normalized to V
V
I
T
25 C
LO AD
-50 -25 0 25 50 75 100125150
Oscillator Frequency
OUT
J
Saturation Voltage
= 25
Supply Current
0.2
5
Line Regulation
vs. Duty Cycle
20
SW I TC H C U R R EN T ( A)
= 5V
INPUT VOL TAGE ( V)
= 500mA
D U TY C YC L E ( % )
10
I
V
Switch
L O AD
40
0.4
IN
Normalized at 25 C
15
from 7V to 40V
7
IN
= 200 mA
0.6
= 10V
60
V
20
IN
V
IN
= 40V
80
0.8
= 12V
25
100
1.0
30
-100
100
200
150
100
100
-25
-50
-75
2.0
1.5
1.0
0.5
95
90
85
80
75
70
65
60
50
75
50
25
0
0
-75
0
-75
-75 -50 -25 0 25 50 75 100125150
0
Feedback Pin Current
-50 -25 0
-50 -25 0 25 50 75 100 125150
200 mA
Quiescent Current
I
I
5
LO AD
Dropout Voltage
LO AD
1A
10 15 20 25 30 35 40
INPUT VOLTAGE ( V)
Efficiency
= 1A
Standby
V IN = 40V
V
= 200 mA
IN
V
= 12V
25 50 75 100 125150
ON/OFF
V
OUT
V
OUT
= 12V
R
V
= 5V
= 3V
200 mA
IND
OUT
= 0. 2
= 5%
1A
M9999-051209-B
LM2575