MIC4680BM Micrel Inc, MIC4680BM Datasheet - Page 2

• Manufacturer Part Number: MIC4680BM
• Description: IC REG BUCK 1A ADJ VOLT 8SOIC
• Manufacturer: Micrel Inc
• Series: SuperSwitcher™r
• Type: Step-Down (Buck)r

Specifications of MIC4680BM

• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: Adj to 1.25V
• Current - Output: 1.3A
• Frequency - Switching: 200kHz
• Voltage - Input: 4 ~ 34 V
• Operating Temperature: -40°C ~ 125°C
• Input Voltage: 34V
• Output Current: 1.3A
• Output Voltage: 5V
• No. Of Pins: 8
• Peak Reflow Compatible (260 C): No
• Supply Voltage Max: 34V
• Leaded Process Compatible: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant, Contains lead / RoHS non-compliant

Ordering Information
Pin Configuration
Pin Description
Micrel, Inc.
March 2008
Standard
MIC4680BM
MIC4680-3.3BM
MIC4680-5.0BM
Pin Number
5 – 8
1
2
3
4
Part Number
Pb-Free
MIC4680YM
MIC4680-3.3YM
MIC4680-5.0YM
Pin Name
SHDN
GND
VIN
SW
FB
Pin Function
Shutdown (Input): Logic low enables regulator. Logic high (>1.6V) shuts down
regulator.
Supply Voltage (Input): Unregulated +4V to +34V supply voltage.
Switch (Output): Emitter of NPN output switch. Connect to external storage inductor
and Shottky diode.
Feedback (Input): Connect to output on fixed output voltage versions, or to 1.23V-tap
of voltage-divider network for adjustable version.
Ground
SHDN
SW
Voltage
FB
IN
3.3V
5.0V
Adj.
1
2
3
4
8-Pin SIOC (M)
2
Junction Temp. Range
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
8 GND
7
6
5
GND
GND
GND
8-Pin SOIC
8-Pin SOIC
8-Pin SOIC
Package
M9999-032808
MIC4680