MIC4680 Micrel Semiconductor, MIC4680 Datasheet - Page 4

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

MIC4680
Parameter
MIC4680/-3.3/-5.0
Frequency Fold Back
Oscillator Frequency
Saturation Voltage
Short Circuit Current Limit
Standby Quiescent Current
Shutdown Input Logic Level
Shutdown Input Current
Thermal Shutdown
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Note 6.
Note 7.
Test Circuit
Shutdown Input Behavior
MIC4680
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Absolute maximum rating is intended for voltage transients only, prolonged dc operation is not recommended.
V
Devices are ESD sensitive. Handling precautions recommended.
Measured on 1" square of 1 oz. copper FR4 printed circuit board connected to the device ground leads.
Test at T
IN(min)
= V
A
= +85 C, guaranteed by design, and characterized to T
OUT
+ 2.5V or 4V whichever is greater.
Condition
I
V
V
V
regulator off
regulator on
V
V
SHUTDOWN
OUT
FB
SHDN
SHDN
SHDN
SHDN
ENABLE
= 0V, see Test Circuit
= 1A
= V
= 5V (regulator off)
= 5V (regulator off)
= 0V (regulator on)
ON
0V
+12V
IN
GUARANTEED
TYPICAL
ON
ON
Current Limit Test Circuit
Shutodwn Hysteresis
0.8V
2
1
Device Under Test
SOP-8
IN
SHDN
1V
GND
4
J
5–8
1.6V
= +125 C.
SW
FB
3
4
2V
GUARANTEED
TYPICAL
OFF
OFF
68 H
V
IN(max)
OFF
I
Min
180
–10
–10
1.3
30
2
–0.5
–1.5
Typ
200
160
1.4
1.8
1.5
1.6
1.0
50
30
Max
100
220
100
1.8
2.5
0.8
10
10
June 2000
Micrel
Units
kHz
kHz
V
V
A
V
V
C
A
A
A
A