MIC4575 Micrel Semiconductor, MIC4575 Datasheet - Page 3

• Manufacturer Part Number: MIC4575
• Description: 200kHz Simple 1A Buck Voltage Regulator
• Manufacturer: Micrel Semiconductor

MIC4575
Absolute Maximum Ratings
Supply Voltage (V
Shutdown Voltage (V
Output Switch (V
Storage Temperature (T
Electrical Characteristics
V
Parameter
MIC4575 [Adjustable]
Feedback Voltage
Feedback Voltage
Efficiency
Feedback Bias Current
MIC4575-3.3
Output Voltage
Output Voltage
Efficiency
MIC4575-5.0
Output Voltage
Output Voltage
Efficiency
MIC4575 / -3.3 / -5.0
Oscillator Frequency
Saturation Voltage
Maximum Duty Cycle (On)
Current Limit
Output Leakage Current
Quiescent Current
Standby Quiescent Current
SHDN Input Logic Level
SHDN Input Current
General Note: Devices are ESD protected, however, handling precautions are recommended.
Note 1:
IN
= 12V; I
The MIC4575 is not guaranteed to survive a short circuit to ground for input voltage above 24V.
LOAD
= 200mA; T
SW
IN
) steady state ................................. –1V
) Note 1 ....................................... +40V
SHDN
S
) ......................... –65 C to 150 C
J
) .......................... –0.3V to +36V
= 25 C, bold values indicate –40 C
Condition
8V
I
6V
I
8V
I
I
FB connected to 0V
Peak Current, t
V
Output = 0V
Output = –1V
SHDN = 5V (regulator off)
V
V
SHDN = 5V (regulator off)
SHDN = 0V (regulator on)
LOAD
LOAD
LOAD
OUT
IN
OUT
OUT
= 24V, FB connected to 0V
= 1A
V
V
V
= 0V (regulator off)
= 3.3 or 5V (regulator on)
= 1A, V
= 1A
= 1A
IN
IN
IN
24V, 0.2A
24V, 0.2A
24V, 0.2A
OUT
ON
= 5V
3 s
I
I
I
LOAD
LOAD
LOAD
4-108
1A
1A
1A
T
Operating Ratings
Supply Voltage (V
Junction Temperature ............................................. +150 C
Package Thermal Resistance
J
TO-220, TO-263 (
TO-220, TO-263 (
+85 C; unless noted.
IN
) ................................................... +24V
JA
JA
) ......................................... 65 C/W
) ........................................... 2 C/W
1.217
1.193
1.180
3.234
3.168
3.135
4.900
4.800
4.750
Min
180
–10
1.7
1.3
2.2
2.4
90
1.230
1.230
0.01
Typ
200
3.3
3.3
5.0
5.0
2.2
7.5
1.4
1.2
77
50
72
77
95
50
1
0
5
4
1.243
1.267
1.280
3.366
3.432
3.465
5.100
5.200
5.250
Max
100
500
220
200
1.3
1.5
3.0
3.2
1.0
0.8
30
10
30
10
2
April 1998•
Micrel
Units
kHz
mA
mA
mA
nA
nA
%
%
%
%
V
V
V
V
V
V
V
V
V
V
V
A
A
V
V
V
V
A
A
A