mic33050 Micrel Semiconductor, mic33050 Datasheet
mic33050
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mic33050 Summary of contents
Page 1
... The MIC33050 comes in fixed output voltage options from 0.72V to 2.5V thereby eliminating external feedback components. The MIC33050 is available in an 12-pin 3mm x 3mm MLF with a junction operating range of –40°C to +125°C. Data sheets and support documentation can be found on Micrel’s web site at: www.micrel.com. ...
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... Feed forward Capacitor connected to Out sense pin Power Ground Analog ground Switch (Output): Internal power MOSFET output switches. Output after the internal inductor 2 Package Lead Finish ® 12-Pin 3mm x 3mm MLF Pb-Free ® 12-Pin 3mm x 3mm MLF Pb-Free ® (ML) and an internal OUT MIC33050 M9999-100407-A ...
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... V EN ).................. –40°C ≤ ® 3mm x 3mm MLF -12 (θ ) ............................... 60°C/W JA Min Typ 2.7 2.45 2.55 100 20 0.01 –2.5 1 0.65 0.5 0 0.45 0.5 4 3.4 650 0.8 0.5 35 0.1 165 20 MIC33050 IN ≤ +125°C J Max Units 5 µA 32 µ +2.5 A 1.7 %/ Ω Ω MHz 4.6 µs V 1.2 mV µA 2 °C °C M9999-100407-A ...
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... Feedback Voltage vs. Temperature 0.80 0.78 0.76 0.74 0.72 0.70 0.68 0. 3. 1.8V OUT 0.62 No Load 0. TEMPERATURE (°C) Output Voltage vs. Load 1.90 1.85 1.80 1. 3.6V IN 1.70 200 300 LOAD (mA) 4 MIC33050 Switching Frequency vs. Temperature 5.5 5.0 4.5 4.0 3 3. 1.8V OUT Load = 150mA 2 TEMPERATURE (°C) Output Voltage vs. Temperature 1.90 1.85 1. 1.8V OUT No Load 1. TEMPERATURE (°C) M9999-100407-A ...
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... Micrel, Inc. Functional Characteristics October 2007 5 MIC33050 M9999-100407-A ...
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... Micrel, Inc. Functional Characteristics (continued) October 2007 6 MIC33050 M9999-100407-A ...
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... Micrel, Inc. Functional Diagram October 2007 MIC33050 Simplified Block Diagram 7 MIC33050 M9999-100407-A ...
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... October 2007 CFF The CFF pin is connected to the SNS pin of MIC33050 with a feed-forward capacitor of 560pF. The CFF pin itself is compared with the internal reference voltage (V the device and provides the control path to control the output ...
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... This reduces their ability to filter out high frequency noise. Output Capacitor The MIC33050 was designed for use with a 2.2µF or greater ceramic output capacitor. A low equivalent series resistance (ESR) ceramic output capacitor either X7R or X5R is recommended. Y5V and Z5U dielectric capacitors, ...
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... Micrel, Inc. Hyper Light Load™ Mode The MIC33050 uses a minimum on and off time proprietary control loop. When the output voltage falls below the regulation threshold, the error comparator begins a switching cycle that turns the PMOS on and keeps it on for the duration of the minimum-on-time. When ...
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... Micrel, Inc. MIC33050 Typical Application Circuit Bill of Materials Item Part Number C1, C2 C1608X5R0J476K C3 C1005X5R0J476K MIC33050-4YHL U1 MIC33050-GYHL Notes: 1. TDK: www.tdk.com 2. Murata: www.murata.com 3. Micrel, Inc: www.micrel.com October 2007 Manufacturer (1) TDK 4.7µF Ceramic Capacitor, 6.3V, X5R, Size 0603 (2) Murata 560pF Ceramic Capacitor, 6.3V, X5R, Size 0402 (4) Micrel, Inc ...
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... Micrel, Inc. PCB Layout Recommendations October 2007 Top Layer Bottom Layer 12 MIC33050 M9999-100407-A ...
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... Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully October 2007 12-Pin 3mm x 3mm MLF indemnify Micrel for any damages resulting from such use or sale. © 2007 Micrel, Incorporated. 13 ® (ML) MIC33050 M9999-100407-A ...