MIC2155 Datasheet, PDF (8/33 Pages) Micrel Semiconductor – 2-Phase, Single Output, PWM Synchronous Buck Control IC

Micrel, Inc.
MIC2155/2156
Parameter
Condition
Min Typ Max Units
PGOOD Voltage Low
Gate Drivers
V_FB = 0 V; I_PGOOD = 1mA
0.225 0.3
V
Rise/Fall Time
Into 3000pF
Source
23
ns
Sink
16
High Side Drive Resistance V_DD = V_IN = 5V
Source
Sink
1.6 3.5
Ω
1.7 2.5
Ω
Low Side Drive Resistance V_DD = V_IN = 5V
Source
Sink
2
3.5
Ω
1.4 2.5
Ω
Driver Non-Overlap Time
(adaptive)
60
ns
Notes:
1. Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating
the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, T_J(Max), the
junction-to-ambient thermal resistance, θ _JA, and the ambient temperature, T_A. The maximum allowable power dissipation will result in excessive die
temperature, and the regulator will go into thermal shutdown.
2. The device is not guaranteed to function outside its operating rating.
3. Specification for packaged product only.
4. Minimum on-time before automatic cycle skipping begins. See applications section.
May 2009
8
M9999-052709-A
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