MIC4680-1.8BM Micrel Inc, MIC4680-1.8BM Datasheet - Page 7

• Manufacturer Part Number: MIC4680-1.8BM
• Description: IC REG BUCK 200KHZ 1A 1.8V 8SOIC
• Manufacturer: Micrel Inc
• Series: SuperSwitcher™r
• Type: Step-Down (Buck)r

Specifications of MIC4680-1.8BM

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.8V
• Current - Output: 1A
• Frequency - Switching: 200kHz
• Voltage - Input: 4 ~ 34 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

Bode Plots
The following bode plots show that the MIC4680 is stable over all conditions using a 68µF inductor (L) and a 220µF
output capacitor (C
Micrel, Inc.
March 2008
OUT
). To assure stability, it is a good practice to maintain a phase margin of greater than 35°.
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M9999-032808
MIC4680