MIC4680_08 Datasheet, PDF (4/15 Pages) Micrel Semiconductor – 1A 200kHz SuperSwitcher Buck Regulator

Micrel, Inc.
Parameter
Condition
Min
Shutdown Input Logic
regulator off
2
Level
regulator on
Shutdown Input Current V_SHDN = 5V (regulator off)
–10
V_SHDN = 0V (regulator on)
–10
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.
Typ
1.6
1.0
–0.5
–1.5
160
MIC4680
Max Units
V
0.8
V
10
µA
10
µA
°C
Test Circuit
+12V
Device Under Test
2 _IN
SW ³
68µH
SHUTDOWN
ENABLE
1 _SHDN
FB ⁴
I
GND
SOIC-8
5–8
Current Limit Test Circuit
Shutdown Input Behavior
ON
0V
0.8V
2V
1V
1.6V
Shutdown Hysteresis
OFF
V_IN(max)
March 2008
4
M9999-032808