MIC2169B_10 Datasheet, PDF (5/25 Pages) Micrel Semiconductor – 500kHz PWM Synchronous Buck Control IC

Micrel, Inc.
MIC2169B
Electrical Characteristics⁽⁴⁾ (continued)
T_J = 25°C, V_IN = 5V; Bold values indicate –40°C ≤ T_J ≤ +125°C; unless otherwise specified.
Parameter
Condition
Min Typ Max Units
Error Amplifier
DC Gain⁽⁵⁾
Transconductance
70
dB
1.1
mΩ^–1
Soft-Start
Soft-Start Current
Current Sense
After time out of internal timer. V_COMP = 0.8V
4
8.5
13
µA
CS Over Current Trip Point
Temperature Coefficient
V_CS = V_IN –0.25V
160 200 240 µA
1800
ppm/°C
Gate Drivers
Rise/Fall Time
Output Driver Impedance
Driver Non-Overlap Time⁽⁵⁾
Into 3000pF at V_IN > 5V
Source, V_IN = 4.5V
Sink, V_IN = 4.5V
Source, V_IN = 3V
Sink, V_IN = 3V
15
ns
2.2
3
Ω
1.3
3
Ω
2.7
4
Ω
1.7
4
Ω
50
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.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive, handling precautions required.
4. Specification for packaged product only.
5. Guaranteed by design.
April 2010
5
M9999-041210-B