MIC38HC45-1YM
ActiveMONOLITHIC SMPS CONTROLLER 14 SOIC .150IN TUBE ROHS COMPLIANT: YES
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MIC38HC45-1YM
ActiveMONOLITHIC SMPS CONTROLLER 14 SOIC .150IN TUBE ROHS COMPLIANT: YES
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Technical Specifications
Parameters and characteristics for this part
| Specification | MIC38HC45-1YM |
|---|---|
| Clock Sync | False |
| Control Features | Frequency Control |
| Duty Cycle (Max) [Max] | 50 % |
| Function | Step-Up, Step-Up/Step-Down, 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 | 14-SOIC |
| Package / Case [x] | 0.154 in |
| Package / Case [y] | 3.9 mm |
| Synchronous Rectifier | True |
| Topology | Boost, Forward Converter, Flyback, Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 20 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 7.6 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 216 | $ 2.71 | |
| Microchip Direct | TUBE | 1 | $ 3.59 | |
| 25 | $ 3.01 | |||
| 100 | $ 2.71 | |||
| 1000 | $ 2.26 | |||
| 5000 | $ 2.08 | |||
| 10000 | $ 1.94 | |||
| Newark | Each | 100 | $ 2.80 | |
Description
General part information
MIC38HC45 Series
The MIC38HC4x family are fixed frequency current-mode PWM controllers with 1A drive current capability. BiCMOS devices are pin-compatible with 384x bipolar devices. Their high output drive, with fast rise and fall times, combined with low startup current make it an ideal PWM controller where high efficiency is required.
Undervoltage lockout circuitry allows the '42 and '44 versions to start up at 14.5V and operate down to 9V, and the '43 and '45 versions start at 8.4V with operation down to 7.6V. All versions operate up to 20V.
When compared to bipolar UC384x devices operating from a 15V supply, start-up current has been reduced to 50µA typical and operating current has been reduced to 4.0 mA typical. Decreased output rise and fall times drive larger MOSFETs, and rail-to-rail output capability increases efficiency, especially at lower supply voltages. The MIC38HC4x also features a trimmed oscillator discharge current and bandgap reference.
Documents
Technical documentation and resources
