mic4576 Micrel Semiconductor, mic4576 Datasheet - Page 3

• Manufacturer Part Number: mic4576
• Description: Mic4576 200khz Simple 3a Buck Regulator
• Manufacturer: Micrel Semiconductor

Absolute Maximum Ratings
Supply Voltage (V
Shutdown Voltage (V
Output Switch (V
Feedback Voltage (V
Storage Temperature ................................ –65°C to +150°C
Electrical Characteristics
V
Parameter
MIC4576 [Adjustable]
Feedback Voltage
Feedback Voltage
Efficiency
Maximum Duty Cycle (On)
Output Leakage Current
Quiescent Current
Feedback Bias Current
MIC4576-3.3
Output Voltage
Output Voltage
Efficiency
Maximum Duty Cycle (On)
Output Leakage Current
Quiescent Current
MIC4576-5.0
Output Voltage
Output Voltage
Efficiency
Maximum Duty Cycle (On)
Output Leakage Current
Quiescent Current
March 2006
IN
= 12V; I
LOAD
= 500mA; T
SW
IN
) .................................................... +40V
), Steady State ............................... –1V
FB
SHDN
) [Adjustable] ......................... +3.8V
J
) ............................–0.3V to +36V
= 25°C, bold values indicate –40°C ≤ T
Condition
8V ≤ V
I
V
V
output = 0V
output = –1V
V
6V ≤ V
I
V
V
output = 0V
output = –1V
V
8V ≤ V
I
V
V
output = 0V
output = –1V
V
LOAD
LOAD
LOAD
FB
IN
FB
FB
IN
FB
FB
IN
FB
= 36V, V
= 36V, V
= 36V, V
= 1.0V
= 1.5V
= 2.5V
= 4.0V
= 4.0V
= 6.0V
= 3A, Note 1
= 3A
= 3A
IN
IN
IN
≤ 36V, 0.5A ≤ I
≤ 36V, 0.5A ≤ I
≤ 36V, 0.5A ≤ I
FB
FB
FB
= 1.5V
= 4.0V
= 6.0V
LOAD
LOAD
LOAD
≤ 3A
≤ 3A
≤ 3A
3
J
Operating Ratings
Supply Voltage (V
Junction Temperature .............................................. +150°C
Package Thermal Resistance
≤ +85°C; unless noted.
TO-220, TO-263 (θ
TO-220, TO-263 (θ
IN
) .................................................... +36V
JA
JC
) ......................................... 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
90
90
90
1.230
1.230
Typ
7.5
3.3
3.3
7.5
5.0
5.0
7.5
77
95
50
72
95
77
95
0
5
0
5
0
5
1.243
1.267
1.280
3.366
3.432
3.465
5.100
5.200
5.250
Max
100
500
35
10
35
10
35
10
2
2
2
MIC4576
Units
mA
mA
mA
mA
mA
mA
mA
mA
mA
nA
nA
%
%
%
%
%
%
V
V
V
V
V
V
V
V
V