MIC2171WU Micrel Inc, MIC2171WU Datasheet - Page 2

• Manufacturer Part Number: MIC2171WU
• Description: IC REG SW 100KHZ 2.5A TO263-5
• Manufacturer: Micrel Inc
• Type: Step-Down (Buck), Step-Up (Boost), Inverting, Cukr

Specifications of MIC2171WU

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Current - Output: 2.5A
• Frequency - Switching: 100kHz
• Voltage - Input: 3 ~ 40 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: D²Pak, TO-263 (5 leads + tab)
• Power - Output: 1.3W
• Number Of Pwm Outputs: 1
• On/off Pin: No
• Adjustable Output: No
• Switching Freq: 112KHz
• Operating Supply Voltage (max): 40V
• Output Current: 2.5A
• Output Voltage: 65V
• Synchronous Pin: No
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 5 +Tab
• Package Type: TO-263
• Duty Cycle: 95%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 576-1063

Ordering Information
Pin Configuration
Pin Description
Micrel, Inc.
May 2007
*RoHS compliant with "high-melting solder" exemption.
Pin Number
MIC2171BU
MIC2171BT
Standard
Tab GND
1
2
3
4
5
Part Number
5-Pin TO-220 (T)
Pin Name
RoHS Compliant*
COMP
GND
MIC2171WT
MIC2171WU
SW
FB
IN
5 IN
4 SW
3 GND
2 FB
1 COMP
Pin Function
Frequency Compensation: Output of transconductance-type error amplifier.
Primary function is for loop stabilization. Can also be used for output voltage
soft-start and current limit tailoring.
Feedback: Inverting input of error amplifier. Connect to external resistive divider
to set power supply output voltage.
Ground: Connect directly to the input filter capacitor for proper operation (see
applications info).
Power Switch Collector: Collector of NPN switch. Connect to external inductor
or input voltage depending on circuit topology.
Supply Voltage: 3.0V to 40V
Temperature Range
–40° to +85°C
–40° to +85°C
2
Tab GND
5-Pin TO-220
5-Pin TO-263
Package
5-Pin TO-263 (U)
5 IN
4 SW
3 GND
2 FB
1 COMP
M9999-051107
MIC2171