LM2574-12 Motorola Inc, LM2574-12 Datasheet - Page 3

• Manufacturer Part Number: LM2574-12
• Description: EASY SWITCHERE 0.5 A STEP-DOWN VOLTAGE REGULATOR
• Manufacturer: Motorola Inc

OPERATING RATINGS
intended to be functional, but do not guarantee specific performance limits. For guaranteed
specifications and test conditions, see the Electrical Characteristics).
SYSTEM PARAMETERS
ELECTRICAL CHARACTERISTICS
V in = 25 V for the 12 V version, V in = 30 V for the 15 V version. I Load = 100 mA. For typical values T J = 25 C, for min/max values T J is the
operating junction temperature range that applies [Note 2], unless otherwise noted).
LM2574–3.3 ([Note 1] Test Circuit Figure 16)
LM2574–5 ([Note 1] Test Circuit Figure 16)
LM2574–12 ([Note 1] Test Circuit Figure 16)
LM2574–15 ([Note 1] Test Circuit Figure 16)
LM2574 ADJUSTABLE VERSION ([Note 1] Test Circuit Figure 16)
NOTES: 1. External components such as the catch diode, inductor, input and output capacitors can affect the switching regulator system
MOTOROLA ANALOG IC DEVICE DATA
Operating Junction Temperature Range
Supply Voltage
Output Voltage (V in = 12 V, I Load = 100 mA, T J = 25 C)
Output Voltage (4.75 V
Efficiency (V in = 12 V, I Load = 0.5 A)
Output Voltage (V in = 12 V, I Load = 100 mA, T J = 25 C)
Output Voltage (7.0 V
Efficiency (V in = 12 V, I Load = 0.5 A)
Output Voltage (V in = 25 V, I Load = 100 mA, T J = 25 C)
Output Voltage (15 V
Efficiency (V in = 15 V, I Load = 0.5 A)
Output Voltage (V in = 30 V, I Load = 100 mA, T J = 25 C)
Output Voltage (18 V < V in < 40 V, 0.1 A < I Load < 0.5 A)
Efficiency (V in = 18 V, I Load = 0.5 A)
Feedback Voltage V in = 12 V, I Load = 100 mA, V out = 5.0 V, T J = 25 C
Feedback Voltage 7.0 V
Efficiency (V in = 12 V, I Load = 0.5 A, V out = 5.0 V)
T J = 25 C
T J = –40 to +125 C
T
T
T
T
T J = 25 C
T J = –40 to +125 C
T J = 25 C
T J = –40 to +125 C
J = 25 C
J = –40 to +125 C
J = 25 C
J = –40 to +125 C
2. Tested junction temperature range for the LM2574: T low = –40 C T high = +125 C
performance. When the LM2574 is used as shown in the Figure 16 test circuit, the system performance will be as
shown in the system parameters section of the Electrical Characteristics.
Rating
V in
V in
V in
V in
(Operating Ratings indicate conditions for which the device is
Characteristic
40 V, 0.1 A
40 V, 0.1 A
40 V, 0.1 A
([Note 1] Test Circuit Figure 16)
40 V, 0.1 A
(Unless otherwise specified, V in = 12 V for the 3.3 V, 5.0 V, and Adjustable version,
I Load
I Load
I Load
I Load
0.5 A)
0.5 A)
0.5 A)
0.5 A, V out = 5.0 V
Symbol
V in
T J
LM2574
–40 to +125
Value
40
Symbol
V FBT
V out
V out
V out
V out
V out
V out
V out
V out
V FB
Unit
V
C
3.234
3.168
3.135
14.25
1.217
1.193
11.76
11.52
4.75
11.4
14.7
14.4
1.18
Min
4.9
4.8
–
–
–
–
–
1.23
1.23
Typ
3.3
3.3
5.0
5.0
72
77
10
12
88
15
15
88
77
–
–
3.366
3.432
3.465
12.24
12.48
15.75
1.243
1.267
Max
5.25
12.6
15.3
15.6
1.28
5.1
5.2
–
–
–
–
–
Unit
%
%
%
%
%
V
V
V
V
V
V
V
V
V
V
3