MIC2168 _ BDTIC a Leading Distributor in China

MIC2168

The MIC2168 is a high-efficiency, simple to use 1MHz PWM synchronous buck control IC housed in a small MSOP-10 package. The MIC2168 allows compact DC/DC solutions with a minimal external component count and cost.

The MIC2168 operates from a 3V to 14.5V input, without the need of any additional bias voltage. The output voltage can be precisely regulated down to 0.8V. The adaptive all N-Channel MOSFET drive scheme allows efficiencies over 95% across a wide load range.

The MIC2168 senses current across the high-side N-Channel MOSFET, eliminating the need for an expensive and lossy current-sense resistor. Current limit accuracy is maintained by a positive temperature coefficient that tracks the increasing R_DS(ON) of the external MOSFET. Further cost and space are saved by the internal in-rush-current limiting digital soft-start.

The MIC2168 is available in a 10-pin MSOP package, with a wide junction operating range of -40°C to +125°C.

Features

3V to 14.5V input voltage range
Adjustable output voltage down to 0.8V
Up to 95% efficiency
1MHz PWM operation
Adjustable current-limit senses high-side N-Channel MOSFET current
No external current sense resistor
Adaptive gate drive increases efficiency
Ultra-fast response with hysteretic transient recovery mode
Overvoltage protection protects the load in fault conditions
Dual mode current limit speeds up recovery time
"Hiccup" mode short-circuit protection
Internal soft-start
Dual function COMP and EN pin allows low-power shutdown
Small size MSOP 10-lead package

Parameter

Parameter Name Value	Value
Supported Topologies Sync. Buck	Sync. Buck
Supported Outputs 1	1
Minimum Input Voltage (V) 3	3
Maximum Input Voltage (V) 14.5	14.5
Minimum Output Voltage (V) 0.8	0.8
Typical Tolerance (%) ±1	±1
Duty Cycle Max (%) 0.9	0.9
Operating Frequency (Hz) 1.0M	1.0M
Soft Start True	True
Internal Compensation True	True
Internal Voltage Bias True	True
Enable Pin True	True
Current Limit / Short Circuit Protection True	True
Operating Supply Current (mA) 1.6	1.6
Iq Off (µA) 50	50
Package 10/MSOP	10/MSOP

Documents

MIC2168 - 1MHz PWM Synchronous Buck Control IC	Data Sheets	11/05/2015	1936KB
Micrel AN 106 - Type II Stability Program for the MIC2168/9	AppNote	10/02/2015	163KB
Micrel AN 107 - Type III Stability Program for the MIC2168/9	AppNote	10/02/2015	174KB
Micrel AN 44a - Type II Stability Program for the MIC2168/69	AppNote	11/12/2015	163KB
Micrel AN 44b - Type III Stability Program for the MIC2168/69	AppNote	11/12/2015	174KB

Ordering Information

Part Number	Leads	Package Type	Temp Range	Packing	1+	26+	100+	1000+	5000+
MIC2168AYMM-TR	10	MSOP	-40C to +125C	T/R	1.97	1.64	1.49	1.44	1.43

RoHS Information

PartNumber	DeviceWeight	ShippingWeight	LeadCount	PackageType	PackageWidth	SolderComposition	JEDECIndicator
MIC2168AYMM-TR	0.024500	0.431180	10	MSOP	3x3x1.0mm	NiPdAu	e4
MIC2168YMM	0.024500	0.135600	10	MSOP	3x3x1.0mm	NiPdAu	e4
MIC2168YMM-TR	0.024500	0.431180	10	MSOP	3x3x1.0mm	NiPdAu	e4
MIC2168AYMM	0.024500	0.135600	10	MSOP	3x3x1.0mm	NiPdAu	e4