MIC4680BM Micrel Inc, MIC4680BM Datasheet - Page 6

• 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

Functional Characteristics
Frequency Foldback
The MIC4680 folds the switching frequency back during a
hard short-circuit condition to reduce the energy per cycle
and protect the device.
Micrel, Inc.
March 2008
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
5
10
V
T
Demonstration
board layout
A
OUT
INPUT VOLTAGE (V)
= 60°C
Operating Area
= 5V
15
6
Safe
20
Current Limit
Minimum
25
30
Note
35
M9999-032808
MIC4680