MIC2178YWM More Semiconductors - ICs by Microchip Technology

2.5A 200kHz Synchronous Buck Regulator

Status: Active
Series: MIC2178
RoHS: Compliant
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The MIC2178 is a 200kHz synchronous buck (step-down) switching regulator designed for high-efficiency, battery-powered applications.The MIC2178 operates from a 4.5V to 16.5V input and features internal power MOSFETs that can supply up to 2.5A output current. It can operate with a maximum duty cycle of 100% for use in low-dropout conditions. It also features a shutdown mode that reduces quiescent current to less than 5µA.

The MIC2178 achieves high efficiency over a wide output current range by operating in either PWM or skip mode. The operating mode is externally selected, typically by an intelligent system, which chooses the appropriate mode according to operating conditions, efficiency, and noise requirements. The switching frequency is preset to 200kHz and can be synchronized to an external clock signal of up to 300kHz.

The MIC2178 uses current-mode control with internal current sensing. Current-mode control provides superior line regulation and makes the regulator control loop easy to compensate. The output is protected with pulse-by-pulse current limiting and thermal shutdown. Undervoltage lockout turns the output off when the input voltage is less than 4.5V.

The MIC2178 and is packaged in a 20-lead wide power SOIC package with an operating temperature range of -40°C to +85°C.

See the MIC2177 for automatic selection of PWM or skip-mode operation.

Prices starting from US$1.50


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Logo for Microchip Technology Microchip Technology US$5.77
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Features

4.5V to 16.5V input voltage range
Dual-mode operation for high efficiency (up to 96%)
PWM mode for > 200mA load current
Skip mode for < 200mA load current
100mO internal power MOSFETs at 12V input
200kHz preset switching frequency
Low quiescent current
1.0mA in PWM mode
600µA in skip mode
< 5µA in shutdown mode
Current-mode control
Simplified loop compensation
Superior line regulation
100% duty cycle for low dropout operation
Current limit
Thermal shutdown
Undervoltage lockout

Specifications

Regulator Type Step Down (Buck)
pricing 0
Supported Output 0
Minimum Input Voltage (V) 0
Maximum Input Voltage (V) 16
Output Current (mA) Max 0
Maximum Frequency (kHz) 0
Vref (V) 0
Duty Cycle Min (%) 0
Duty Cycle Max (%) 1
Switching Frequency (kHz) 200
Input Voltage Range Min 4.5
Input Voltage Range Max 16.5
Output Current 2500
Temp Range Min -40
Temp Range Max 85
Vout Min (V) 1.245
Vout Max (V) 16.5
Quiescent Current (mA) typ 0.6
Light Load Efficiency Mode Yes
Switch current (A) typ 0
Automotive Rated No
SHUTDOWN Current (µA) (Typ) 1
# of Outputs 1
Vfb (V) 1.245
Synchronous Rectifier Yes
Pins | Packaging 20 | SOIC
Temp Range -40C to +85C
Packing Media Tube (38)

Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.542
Shipping Weight (kg) 0.973684
Lead Count 20
Package Type SOIC
Package Width or Size .300in
Soldering Composition Matte Tin

Alternative Descriptions

2.5A 200kHz Synchronous Switcher | Microchip Technology
BUCK, 4.5-16.5V, 2.5A, 200KHZ, 20WSOIC | Farnell
2.5A 200Khz Synchronous Switcher 20 Soic .300In Tube Rohs Compliant: Yes |Microchip MIC2178YWM | Newark Electronics


Frequently Asked Questions

Where can I find additional details, specifications and documents for a MIC2178YWM?

Additional datasheets, footprints and schematics for MIC2178YWM are listed on our Part Details page. You can also find images and similar parts to MIC2178YWM on this page.

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What category does MIC2178YWM fall under?

The MIC2178YWM is listed under Semiconductors - ICs > More Semiconductors - ICs.

Can I view similar or alternative parts?

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Is the MIC2178YWM RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

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