MIC9131YM-TR More Semiconductors - ICs by Microchip Technology

High Vin Telecom DC/DC PWM Control w/High Voltage Start Up

Status: Active
Series: MIC9131
RoHS: Compliant
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The MIC9131 is a current-mode PWM controller that efficiently converts -48V telecom voltages to logic levels. The MIC9131 features a high voltage start-up circuit that allows the device to be connected to input voltages as high as 180V. The high input voltage capability protects the MIC9131 from line transients that are common in telecom systems. The start-up circuitry also saves valuable board space and simplifies designs by integrating several external components. The MIC9131 is capable of high speed operation. Typically the MIC9131 can control a sub-25ns pulse width on the gate out pin. Its internal oscillator can operate over 2.5MHz, with even higher frequencies available through synchronisation. The high speed operation of the MIC9131 is made safe by the very fast, 34ns response from current sense to output, minimizing power dissipation in a fault condition. The MIC9131 allows for the designs of high efficiency power supplies. It can achieve efficiencies over 90% at high output currents. Its low 1.3mA quiescent current allows high efficiency even at light loads. The MIC9131 has a maximum duty cycle of 75%. For designs requiring a maximum duty cycle of 50%, refer to the MIC9130. The MIC9131 is available in a 16-pin SOP and 16-pin QSOP package options. The junction temperature range is from -40°C to +125°C.

Prices starting from US$3.51


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Logo for Avnet America Avnet America US$4.84
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Features

Input voltages up to 180V
Internal oscillator capable of >2.5MHz operation
Accurate 75% maximum duty cycle
Synchronisation capability to 6MHz
Current sense delay of 34ns
Minimum pulse width of <25ns
90% efficiency
1.3mA quiescent current
1µA shutdown current
Soft-start
Resistor programmable current sense threshold
Selectable soft-start retry
4O sink, 12O source output driver
Programmable under-voltage lockout
Constant-frequency PWM current-mode control
16-pin SOIC and 16-pin QSOP

Specifications

Supported Topologies Forward,Flyback
Supported Outputs 1
Minimum Input Voltage (V) 9
Maximum Input Voltage (V) 180
Minimum Output Voltage (V) 4.85
Maximum Output Voltage (V) 4.85
Typical Tolerance (%) ±3
Duty Cycle Max (%) 0.75
Operating Frequency (Hz) Adj. to 2.5MHz
External Clock Sync True
Soft Start True
Internal Voltage Bias True
Enable Pin True
Current Limit / Short Circuit Protection True
Input UVLO Typ (V) 1.22
Operating Supply Current (mA) 1
Package 16/SOP, 16/QSOP
Pins | Packaging 16 | SOIC
Temp Range -40C to +125C
Packing Media Tape and reel (2500)

Resources


Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.1574
Shipping Weight (kg) 0.307692
Lead Count 16
Package Type SOIC
Package Width or Size .150in
Soldering Composition Matte Tin

Alternative Descriptions

So-16 High Vin Telecom Dc/Dc Pwm Control 16 Soic .150In T/R Rohs Compliant: Yes |Microchip MIC9131YM-TR | Newark Electronics
Current mode PWM Controller 4.7V to 5V 16-Pin SOP T/R | Avnet America
SO-16 High Vin Telecom DC/DC PWM Control | Microchip Technology


Frequently Asked Questions

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Is the MIC9131YM-TR RoHS compliant?

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

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Authorised distributors including Newark Electronics, Avnet America and Microchip Technology have stock available or on a lead time for MIC9131YM-TR.

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