Integrated Circuits (ICs)

MIC3809BM

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Microchip Technology

IC REG CTRLR MULT TOPOLOGY 8SOIC

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Integrated Circuits (ICs)

MIC3809BM

Unknown

Microchip Technology

IC REG CTRLR MULT TOPOLOGY 8SOIC

Deep-Dive with AI

DocumentsDatasheet

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	MIC3809BM

Clock Sync	False
Control Features	Frequency Control
Duty Cycle (Max)	49 %
Frequency - Switching	200 kHz
Function	Step-Up/Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive, Isolation Capable
Output Phases	1
Output Type	Transistor Driver
Package / Case	8-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	8-SOIC
Synchronous Rectifier	False
Topology	Half-Bridge, Push-Pull, Full-Bridge
Voltage - Supply (Vcc/Vdd) [Max]	14 V
Voltage - Supply (Vcc/Vdd) [Min]	4.1 V

MIC3809 Series

Push-Pull DC/DC Controller w/Turn On Threshold of 4.3V

Part	Output Type	Topology	Control Features	Output Configuration	Package / Case	Package / Case [custom]	Package / Case	Duty Cycle (Max)	Number of Outputs	Mounting Type	Supplier Device Package	Frequency - Switching	Output Phases	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Function	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case [y]	Package / Case [x]
Microchip Technology MIC3809BMM	Transistor Driver	Full-Bridge Half-Bridge Push-Pull	Frequency Control	Isolation Capable Positive	8-MSOP 8-TSSOP	0.118 in	3 mm	49 %	1	Surface Mount	8-MSOP	200 kHz	1	4.1 V	14 V	Step-Up/Step-Down	85 °C	-40 °C
Microchip Technology MIC3809BM-TR	Transistor Driver	Full-Bridge Half-Bridge Push-Pull	Frequency Control	Isolation Capable Positive	8-SOIC			49 %	1	Surface Mount	8-SOIC	200 kHz	1	4.1 V	14 V	Step-Up/Step-Down	85 °C	-40 °C	3.9 mm	0.154 in
Microchip Technology MIC3809BM	Transistor Driver	Full-Bridge Half-Bridge Push-Pull	Frequency Control	Isolation Capable Positive	8-SOIC			49 %	1	Surface Mount	8-SOIC	200 kHz	1	4.1 V	14 V	Step-Up/Step-Down	85 °C	-40 °C	3.9 mm	0.154 in
Microchip Technology MIC3809YM-TR	Transistor Driver	Full-Bridge Half-Bridge Push-Pull	Frequency Control	Isolation Capable Positive	8-SOIC			49 %	1	Surface Mount	8-SOIC	200 kHz	1	4.1 V	14 V	Step-Up/Step-Down	85 °C	-40 °C	3.9 mm	0.154 in
Microchip Technology MIC3809BMM-TR	Transistor Driver	Full-Bridge Half-Bridge Push-Pull	Frequency Control	Isolation Capable Positive	8-MSOP 8-TSSOP	0.118 in	3 mm	49 %	1	Surface Mount	8-MSOP	200 kHz	1	4.1 V	14 V	Step-Up/Step-Down	85 °C	-40 °C

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Bulk	665	$ 1.31

Description

General part information

MIC3809 Series

The MIC3808 and MIC3809 are a family of complementary output push-pull PWM control ICs that feature high speed and low power consumption. The MIC3808/9 are ideal for telecom level (36V to 75V) isolated step down DC/DC conversion applications where high output current, small size, and high efficiency are required.

The dual-ended push-pull architecture of the MIC3808/9 allows more efficient utilization of the transformer than single-ended topologies, allowing smaller size DC/DC solutions. Additionally, the out-of-phase push-pull topology allows a higher effective duty cycle, reducing input and output ripple as well as stress on the external components. The dead-time between the two outputs is adjustable between 60ns to 200ns, limiting the duty cycle of each output stage to less than 50%.

The MIC3808/9 are built on a low-power, high-speed BiCMOS process. The 130µA start-up current and 1mA run-current reduce the size of the start-up circuitry and allow high efficiency even at light loads. The high-speed internal 4MHz error amplifier allows MIC3808/9 operation up to 1MHz.

Documents

Technical documentation and resources