MIC4576-3.3WU Micrel Inc, MIC4576-3.3WU Datasheet - Page 2

• Manufacturer Part Number: MIC4576-3.3WU
• Description: IC REG BUCK 3.0A 3.3V TO-263-5
• Manufacturer: Micrel Inc
• Type: Step-Down (Buck)r

Specifications of MIC4576-3.3WU

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 3.3V
• 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)
• Input Voltage: 36V
• Output Current: 3A
• Output Voltage: 3.3V
• No. Of Outputs: 1
• Supply Voltage Range: 4V To 36V
• No. Of Pins: 5
• Operating Temperature Range: -40°C To +85°C
• Frequency: 200kHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 576-1532-5; MIC4576-3.3WU

Ordering Information
* RoHS compliant with "high-melting solder" exemption.
Pin Configuration
Pin Description
MIC4576
MIC4576-3.3BT
MIC4576-5.0BT
MIC4576BT
MIC4576-3.3BU
MIC4576-5.0BU
MIC4576BU
Part Number
Standard
Pin Number
3,
1
2
TAB
4
5
MIC4576-3.3WT
MIC4576-5.0WT
MIC4576WT
MIC4576-3.3WU
MIC4576-5.0WU
MIC4576WU
RoHS Compliant
Part Number*
Pin Name
SHDN
GND
SW
V
FB
IN
Voltage
ADJ.
ADJ.
3.3V
5.0V
3.3V
5.0V
Pin Function
Supply Voltage (Input): Unregulated +4V to +36V supply voltage.
Switch (Output): Emitter of NPN output switch. Connect to external storage
inductor and Shottky diode.
Ground
Feedback (Input): Output voltage feedback to regulator. Connect to output
of supply for fixed versions. Connect to 1.23V tap of resistive divider for
adjustable versions.
Shutdown (Input): Logic low enables regulator. Logic high (> 2.4V) shuts
down regulator.
5-Pin TO-263 (U)
5-Pin TO-220 (T)
Temperature Range
–40ºC to +85ºC
–40ºC to +85ºC
–40ºC to +85ºC
–40ºC to +85ºC
–40ºC to +85ºC
–40ºC to +85ºC
2
5 SHDN
4 FB
3 GND
2 SW
1 V
IN
5 SHDN
4 FB
3 GND
2 SW
1 V
TO-220-5
TO-220-5
TO-220-5
TO-263-5
TO-263-5
TO-263-5
Package
IN
March 2006