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Details for MIC2179YSM by Microchip Technology
MIC2179
MIC2179YSM
Buy Directly from Microchip Technology Inc (7370 in stock) $5.3900
1.5A 200kHz Synchronous Switcher
MIC2179YSM image

MIC2179YSM by Microchip Technology

1.5A 200kHz Synchronous Switcher
Features
4.5V to 16.5V input voltage range
Dual-mode operation for high efficiency (up to 96%)
PWM mode for > 150mA load current
Skip mode for <150mA load current
150mΩ 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 Micrel MIC2179 is a 200kHz synchronous buck (step-down) switching regulator designed for high-efficiency, battery-powered applications.

The MIC2179 operates from a 4.5V to 16.5V input and features internal power MOSFETs that can supply up to 1.5A 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 MIC2179 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 MIC2179 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 MIC2179 and is packaged in a 20-lead SSOP package with an operating temperature range of -40°C to +85°C.

Specifications
Regulator Type:
Step Down (Buck)
Switching Frequency (kHz):
200
Input Voltage Range Min:
4.5
Input Voltage Range Max:
16.5
Output Current:
1500
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
1.5A 200KHZ SYNCHRONOUS SWITCHER 20 SSOP .209IN TUBE Newark Electronics
Conv DC-DC Single Step Down 4.5V 16.5V 20-Pin SSOP Tube Avnet America
1.5A 200kHz Synchronous Switcher Microchip Technology Inc
Conv DC-DC Single Step Down 4.5V 16.5V 20-Pin SSOP Tube Avnet Europe
MIC2179 Series 16.5 V 200 kHz 1.5 A Synchronous Buck Regulator - SSOP-20 Future Electronics
Details for MIC2179YSM by Microchip Technology
MIC2179
MIC2179YSM
Buy Directly from Microchip Technology Inc (7370 in stock) $5.3900
DC-DC CONV BUCK 200KHZ SSOP-20
MIC2179YSM image

MIC2179YSM by Microchip Technology

DC-DC CONV BUCK 200KHZ SSOP-20
Part Information
MIC2179YSM image
RoHS Compliant
Description
The Micrel MIC2179 is a 200kHz synchronous buck (step- down) switching regulator designed for high-efficiency, bat- tery-powered applications. TheMIC2179operatesfroma4.5Vto16.5Vinputandfeatures internal power MOSFETs that can supply up to 1.5A 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 MIC2179 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 intel- ligentsystem,whichchoosestheappropriatemodeaccording 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 MIC2179 uses current-mode control with internal current sensing. Current-mode control provides superior line regula- tionandmakestheregulatorcontrolloopeasytocompensate. The output is protected with pulse-by-pulse current limiting andthermalshutdown. Undervoltagelockoutturnstheoutput off when the input voltage is less than 4.5V. The MIC2179 and is packaged in a 20-lead SSOP package with an operating temperature range of –40°C to +85°C.
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:
SSOP
No. of Pins:
20Pins
Output Current:
1.5A
Output Voltage Min:
1.25V
Output Voltage Max:
16.5V
Switching Frequency:
200kHz
Operating Temperature Max:
85°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 2 - 1 year
SVHC:
No SVHC (15-Jan-2018)
Alternate Descriptions
1.5A 200KHZ SYNCHRONOUS SWITCHER 20 SSOP .209IN TUBE Newark Electronics
Conv DC-DC Single Step Down 4.5V 16.5V 20-Pin SSOP Tube Avnet America
1.5A 200kHz Synchronous Switcher Microchip Technology Inc
Conv DC-DC Single Step Down 4.5V 16.5V 20-Pin SSOP Tube Avnet Europe
MIC2179 Series 16.5 V 200 kHz 1.5 A Synchronous Buck Regulator - SSOP-20 Future Electronics