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MIC2203 Datasheet(PDF) 3 Page - Micrel Semiconductor

Part No. MIC2203
Description  High Efficiency 1MHz Synchronous Buck Regulator
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Maker  MICREL [Micrel Semiconductor]
Homepage  http://www.micrel.com
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MIC2203 Datasheet(HTML) 3 Page - Micrel Semiconductor

 
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Micrel, Inc.
MIC2203
Absolute Maximum Ratings(1)
Supply Voltage (VIN) .............................................. 6V
Output Switch Voltage (VSW) ................................. 6V
Logic Input Voltage (VEN, VSYNC_IN) .............VIN to –3V
Power Dissipation ............................................Note 5
Storage Temperature (Ts)............... –65°C to +150°C
ESD Rating
(3) ........................................................2kV
Operating Ratings(2)
Supply Voltage (VIN)................................2.3V to 5.5V
Junction Temperature Range ......... –40°C to +125°C
Package Thermal Resistance
MSOP-10L (
θJA)..................................... 115°C/W
3mmX3mm MLF-10L (
θJA)....................... 60°C/W
Electrical Characteristics(4)
TA = 25°C with VIN = VEN = 3.5V, unless otherwise specified. Bold values indicate –40ºC < TJ < +125ºC
Parameter
Condition
Min
Typ
Max
Units
Supply Voltage Range
2.3
5.5
V
VFB = 0.6V (not switching)
320
450
µA
Quiescent Current
EN = 0V (shutdown)
0.01
1
µA
No Load Supply Current
(switching)
870
µA
MIC2203 [Adjustable]
Feedback Voltage
0.4875
0.5
0.5125
V
Output Voltage Line
Regulation
VOUT < 2V; VIN = 2.3V to 5.5V, ILOAD= 50mA
0.13
0.5
%
Output Voltage Load
Regulation
0mA < ILOAD < 300mA
0.2
0.5
%
Bias Regulator Output
Voltage
2.2
2.32
2.6
V
Maximum Duty Cycle
VFB ≤ 0.4V
100
%
Current Limit
VFB = 0.4V
0.375
0.6
1.5
A
Switch ON-Resistance
ISW = 300mA VFB = 0.4V
ISW = -300mA VFB = 0.6V
1.5
1
2.2
1.6
Enable Input Current
0.01
2
µA
Sync Frequency Range
0.8
1.25
MHz
SYNC_IN Threshold
0.7
1
1.7
V
Sync Minimum Pulse
Width
10
ns
SYNC_IN Input Current
1
µA
Oscillator Frequency
0.8
1
1.2
MHz
Enable Threshold
0.5
0.7
1.3
V
Enable Hysteresis
20
mV
Over Temperature
Shutdown
Hysteresis
160
20
°C
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, 1.5k in series with 100pF.
4. Specification for packaged product only.
5. Absolute maximum power dissipation is limited by maximum junction temperature where PD(MAX) = (TJ(MAX) – TA) ÷
θJA.
December 2004
3
M9999-120604
(408) 955-1690


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