Datasheet Microchip MIC2183YM
MIC2183 is a high efficiency PWM synchronous buck control IC
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MIC2183 - Low Voltage Synchronous Buck PWM Control IC
MIC2183 Micrel, Inc. MIC2183
Low Voltage Synchronous Buck PWM Control IC General Description Features Micrelâ€™s MIC2183 is a high efficiency PWM synchronous
buck control IC. With its wide input voltage range of 2.9V to
14V, the MIC2183 can be used to efficiently step voltages
down in 1-or 2-cell Li Ion battery powered applications, as
well as in fixed 3.3V, 5V, or 12V systems.
Efficiencies over 90% are achievable over a wide range of
load conditions with the MIC2183â€™s PWM control scheme.
The operating frequency can be divided by two by raising the
FREQ/2 pin to VDD. This allows the user to optimize efficiency
versus board space. It also allows the MIC2183 to be externally synchronized to frequencies below its nominal 400KHz.
The MIC2183 features an oscillator output, FreqOut, which
can be used to implement a simple charge pump in low
voltage applications. The output of the charge pump can be
fed into the gate drive power circuitry via the VINP pin. This
feature allows enhanced gate drive, hence higher efficiencies
at low input voltages.
MIC2183 also features a 1ÂµA shutdown mode, and a programmable undervoltage lockout, making it well-suited for
The MIC2183 is available in 16-pin SOP and QSOP packaging options with a junction temperature range from -40Â°C to
+125Â°C. Input voltage range: 2.9V to 14V
Oscillator frequency of 400kHz ...
|Lifecycle Status||Production (Appropriate for new designs but newer alternatives may exist)|
|Current Limit / Short Circuit Protection||True|
|Duty Cycle Max||1 %|
|External Clock Sync||True|
|Internal Voltage Bias||True|
|Iq Off||0.5 µA|
|Maximum Input Voltage||14 V|
|Maximum Output Voltage||12 V|
|Minimum Input Voltage||2.9 V|
|Minimum Output Voltage||1.3 V|
|Operating Frequency||200K / 400K Hz|
|Operating Supply Current||1.7 mA|
|Operating Temperature Range||-40 to +125 °C|
|Supported Topologies||Sync. Buck|
|Typical Tolerance||Â±1 %|
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