MIC4680-1.8BM Micrel Inc, MIC4680-1.8BM Datasheet - Page 6

• 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: -

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