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MIC2169A Datasheet, PDF (3/17 Pages) Micrel Semiconductor – 500kHz PWM Synchronous Buck Control IC
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MIC2169A
Absolute Maximum Ratings(1)
Supply Voltage (VIN)................................................... 15.5V
Booststrapped Voltage (VBST) .................................VIN +5V
Junction Temperature (TJ) ..................–40°C ≤ TJ ≤ +125°C
Storage Temperature (TS) ........................ –65°C to +150°C
Micrel
Operating Ratings(2)
Supply Voltage (VIN)..................................... +3V to +14.5V
Output Voltage Range .......................... 0.8V to VIN × DMAX
Package Thermal Resistance
θJA 10-lead MSOP ............................................. 180°C/W
Electrical Characteristics(3)
TJ = 25°C, VIN = 5V; bold values indicate –40°C < TJ < +125°C; unless otherwise specified.
Parameter
Condition
Feedback Voltage Reference
(± 1%)
Feedback Voltage Reference
(± 2% over temp)
Feedback Bias Current
Output Voltage Line Regulation
Output Voltage Load Regulation
Output Voltage Total Regulation
Oscillator Section
3V ≤ VIN ≤ 14.5V; 1A ≤ IOUT ≤ 10A; (VOUT = 2.5V)(4)
Oscillator Frequency
Maximum Duty Cycle
Minimum On-Time(4)
Input and VDD Supply
PWM Mode Supply Current
VCS = VIN –0.25V; VFB = 0.7V (output switching but excluding
external MOSFET gate current.)
Shutdown Quiescent Current
VCOMP Shutdown Threshold
VCOMP Shutdown Blanking
Period
VCOMP/EN = 0V
CCOMP = 100nF
Digital Supply Voltage (VDD)
VIN ≥ 6V
Min
0.792
0.784
Typ
0.8
0.8
30
0.03
0.5
0.6
Max
0.808
0.816
100
Units
V
V
nA
%/V
%
%
450 500 550 kHz
92
%
30
60
ns
1.5
3
mA
50
150
µA
0.1 0.25 0.4
V
4
ms
4.7
5
5.3
V
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, TJ(max),
the junction-to-ambient thermal resistance, θJA, and the ambient temperature, TA. The maximum allowable power dissipation will result in excessive
die temperature, and the regulator will go into thermal shutdown.
2. Devices are ESD sensitive, handling precautions required.
3. Specification for packaged product only.
4. Guaranteed by design.
June 2005
3
M9999-111803
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