MIC2238_10 Datasheet, PDF (5/16 Pages) Micrel Semiconductor – 2.5MHz Dual Phase PWM Buck Regulator

Micrel, Inc.
MIC2238
Electrical Characteristics (cont.)⁽⁴⁾
Parameter
Protection
Current Limit
Over Temperature
Shutdown Hysteresis
Control
Maximum Duty Cycle
Oscillator
Condition
Peak Switch Current, V_OUT = 0V
V_FB = 0.7V
PWM Mode Frequency
Power Good
Power Good Reset
Threshold
Upper Threshold
Lower Threshold
PGOOD Series
Resistance
PGOOD Pull-Up Current
Power Switch
Output within 8.5% of regulation
Switch On-Resistance
I_SW = 150mA (PFET)
I_SW = 150mA (NFET)
Min Typ Max Units
0.9
1.2
1.8
A
20
°C
100
%
2.125 2.5 2.875 MHz
6.25
12
%
-14 -8.5
1
1.4
kΩ
5
µA
0.4
Ω
0.35
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
4. Specification for packaged product only.
April 2010
5
M9999-040810-A