Micrel, Inc.
Parameter
Shutdown Input Logic
Level
Shutdown Input Current
Thermal Shutdown
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Absolute maximum rating is intended for voltage transients only, prolonged dc operation is not recommended.
4. V
IN(min)
= V
OUT
+ 2.5V or 4V whichever is greater.
5. Devices are ESD sensitive. Handling precautions recommended.
6. Measured on 1" square of 1 oz. copper FR4 printed circuit board connected to the device ground leads.
7. Test at T
A
= +85°C, guaranteed by design, and characterized to T
J
= +125°C.
MIC4680
Condition
regulator off
regulator on
V
SHDN
= 5V (regulator off)
V
SHDN
= 0V (regulator on)
–10
–10
Min
2
Typ
1.6
1.0
–0.5
–1.5
160
0.8
10
10
Max
Units
V
V
µA
µA
°C
Test Circuit
+12V
Device Under Test
2
IN
SHDN
GND
SOIC-8
5–8
SW
FB
3
68µH
SHUTDOWN
ENABLE
1
4
I
Current Limit Test Circuit
Shutdown Input Behavior
OFF
ON
0.8V
0V
1V
1.6V
2V
V
IN(max)
Shutdown Hysteresis
March 2008
4
M9999-032808
MICREL [ MICREL SEMICONDUCTOR ]
