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Details for MIC2178YWM by Microchip Technology
MIC2178
MIC2178YWM
Buy Directly from Microchip Technology Inc (3536 in stock) $5.9200
2.5A 200kHz Synchronous Switcher
MIC2178YWM image

MIC2178YWM by Microchip Technology

2.5A 200kHz Synchronous Switcher
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
100mΩ 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
Description

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.

Specifications
Regulator Type:
Step Down (Buck)
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
SHUTDOWN Current (µA) (Typ):
1
# of Outputs:
1
Vfb (V):
1.245
Synchronous Rectifier:
Yes
Duty Cycle Max (%):
1
Temperature Range:
-40C to +85C
Alternate Descriptions
2.5A 200KHZ SYNCHRONOUS SWITCHER 20 SOIC .300IN TUBE Newark Electronics
SOIC 2.5A 200kHz Synchronous Switcher Avnet America
2.5A 200kHz Synchronous Switcher Microchip Technology Inc
SOIC 2.5A 200kHz Synchronous Switcher Avnet Europe
MIC2177 Series 16.5 V 200 kHz 2.5 A Synchronous Buck Regulator - SOIC-20W Future Electronics
Details for MIC2178YWM by Microchip Technology
MIC2178
MIC2178YWM
Buy Directly from Microchip Technology Inc (3536 in stock) $5.9200
BUCK 4.5-16.5V 2.5A 200KHZ 20WSOIC
MIC2178YWM image

MIC2178YWM by Microchip Technology

BUCK 4.5-16.5V 2.5A 200KHZ 20WSOIC
Features
100% duty cycle for low dropout operation
100mu2126 internal power MOSFETs at 12V input
200kHz preset switching frequency
Current limit
Current-mode control Simplified loop compensation Superior line regulation
Dual-mode operation for high efficiency (up to 96%) PWM mode for > 200mA load current Skip mode for < 200mA load current
Low quiescent current 1.0mA in PWM mode 600u00b5A in skip mode < 5u00b5A in shutdown mode
Ther
Part Information
MIC2178YWM image
RoHS Compliant
Description
The Micrel MIC2178 is a 200kHz synchronous buck (step- down) switching regulator designed for high-efficiency, bat- tery-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 intelli- gent 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 regula- tion and makes the regulator control loop easy to compen- sate. 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.
Specifications
Topology:
Synchronous Buck (Step Down)
Input Voltage Min:
4.5V
Input Voltage Max:
16.5V
No. of Outputs:
1Outputs
DC / DC Converter IC Case:
WSOIC
No. of Pins:
20Pins
Output Current:
2.5A
Output Voltage Min:
1.25V
Output Voltage Max:
16.5V
Switching Frequency:
240kHz
Operating Temperature Max:
85°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (27-Jun-2018)
Operating Temperature Min:
-40°C
Operating Temperature Range:
-40°C to +85°C
Primary Input Voltage:
16.5V
Alternate Descriptions
2.5A 200KHZ SYNCHRONOUS SWITCHER 20 SOIC .300IN TUBE Newark Electronics
SOIC 2.5A 200kHz Synchronous Switcher Avnet America
2.5A 200kHz Synchronous Switcher Microchip Technology Inc
SOIC 2.5A 200kHz Synchronous Switcher Avnet Europe
MIC2177 Series 16.5 V 200 kHz 2.5 A Synchronous Buck Regulator - SOIC-20W Future Electronics