MIC2800-1.8/1.2/2.5YML Ver la hoja de datos (PDF) - Micrel
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MIC2800-1.8/1.2/2.5YML Datasheet PDF : 20 Pages
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Micrel, Inc.
MIC2800
Electrical Characteristics - DC/DC Converter
VIN = VOUTDC/DC + 1; EN1 = VIN; EN2 = GND; IOUTDC/DC = 100mA ;L = 2.2µH; COUTDC/DC = 2.2µF; TJ = 25°C, bold values
indicate –40°C to + 125°C; unless noted.
Parameter
Conditions
Min Typ Max Units
LOWQ = High (Full Power Mode)
Fixed Output Voltages
Nominal VOUT tolerance
Current Limit in PWM Mode
FB pin input current (ADJ only)
Output Voltage Line Regulation
Output Voltage Load Regulation
Maximum Duty Cycle
PWM Switch ON-Resistance
Oscillator Frequency
VFB = 0.9*VNOM
VOUT > 2.4V; VIN = VOUT + 300mV to 5.5V, ILOAD= 100mA
VOUT < 2.4V; VIN = 2.7V to 5.5V, ILOAD= 100mA
20mA < ILOAD < 300mA
VFB ≤ 0.4V
ISW = 150mA VFB = 0.7VFB_NOM
ISW = -150mA VFB = 1.1VFB_NOM
-2
+2
%
-3
+3
%
0.75
1
1.6
A
1
5
nA
0.2
%/V
%/V
0.2
1.5
%
100
%
0.6
Ω
0.8
Ω
1.8
2
2.2
MHz
Output Voltage Noise
COUT = 2.2µF; CBYP = 0.1µF; 10Hz to 100KHz
60
µVRMS
LOWQ = Low (Light Load Mode)
Output Voltage Accuracy
Variation from nominal VOUT
Variation from nominal VOUT; -40°C to +125°C
Output Voltage Temp.
Coefficient
Line Regulation
VIN = VOUT + 1V to 5.5V; IOUT = 100µA
Load Regulation
Ripple Rejection
Current Limit
IOUT = 100µA to 50mA
f = up to 1kHz; COUT = 2.2µF; CBYP = 0.1µF
f = 20kHz; COUT = 2.2µF; CBYP = 0.1µF
VOUT = 0V
-2.0
+2.0
%
-3.0
+3.0
%
40
ppm/C
0.02
0.3
%/V
0.6
%/V
0.2
1.5
%
55
dB
45
dB
80
120
190
mA
September 2007
5
M9999-090507-C
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