MIC4576WU Micrel Inc, MIC4576WU Datasheet - Page 5

• Manufacturer Part Number: MIC4576WU
• Description: IC REG 200KHZ 3.0A ADJ TO-263-5
• Manufacturer: Micrel Inc
• Type: Step-Down (Buck)r

Specifications of MIC4576WU

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.23 ~ 33 V
• Current - Output: 3A
• Frequency - Switching: 200kHz
• Voltage - Input: 4 ~ 36 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: D²Pak, TO-263 (5 leads + tab)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: 576-3378-5; MIC4576WU

Block Diagrams
March 2006
Shutdown
Enable
Shutdown
Enable
SHDN
SHDN
MIC4576
MIC4576-x.x
Regulator
Regulator
Oscillator
Oscillator
Internal
200kHz
Internal
200kHz
Block Diagram with External Components
Block Diagram with External Components
[Adjustable]
parator
parator
Com-
Adjustable Step-Down Regulator
Com-
Error
Amp.
Error
Amp.
Fixed Step-Down Regulator
Shutdown
Shutdown
Thermal
Thermal
Bandgap
Bandgap
1.23V
1.23V
Driver
Driver
Current
Current
Limit
Limit
5
GND
R2
GND
R1
3A
Switch
3A
Switch
+36V max.
+36V max.
V
V
IN
IN
SW
FB
SW
FB
D1
D1
C
C
IN
IN
L1
L1
R1
R2
C
C
OUT
OUT
V
V
OUT
OUT
MIC4576