MIC4680 Micrel Semiconductor, MIC4680 Datasheet - Page 8

• Manufacturer Part Number: MIC4680
• Description: 1A 200kHz SuperSwitcher Buck Regulator Final Information
• Manufacturer: Micrel Semiconductor

MIC4680
Block Diagrams
MIC4680
SHDN
SHDN
MIC4680-x.x
MIC4680 [adj.]
Oscillator
Oscillator
200kHz
200kHz
parator
parator
Adjustable Regulator
Com-
Com-
Error
Error
Amp
Amp
Fixed Regulator
Regulator
Shutdown
Regulator
Shutdown
Thermal
Thermal
Internal
Internal
Reset
Reset
8
GND
1.23V
Bandgap
Reference
1.23V
Bandgap
Reference
Current
Current
Driver
Driver
Limit
Limit
Switch
Switch
IN
IN
1A
1A
V
V
IN
IN
SW
FB
SW
FB
R1 R2
V
V
REF
OUT
1.23V
V
REF
V
V
OUT
REF
R2
R1
1
1
R1
R2
V
C
V
C
OUT
OUT
OUT
OUT
June 2000
Micrel