MIC2238 Datasheet, PDF (5/16 Pages) Micrel Semiconductor – Dual Synchronous 800mA/800mA Step-Down DC/DC 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, VOUT = 0V
VFB = 0.7V
PWM Mode Frequency
Power Good
Power Good Reset
Threshold
PGOOD Series
Resistance
PGOOD Pull-Up Current
Power Switch
Upper Threshold
Lower Threshold
Output within 8.5% of regulation
Switch On-Resistance
ISW = 150mA (PFET)
ISW = 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.
July 2007
5
M9999-071307