MIC38C43XYM
Active20V, CURRENT MODE SMPS CONTROLLER FAMILY WITH VARIOUS UVLO AND MAX DUTY CYCLE
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MIC38C43XYM
Active20V, CURRENT MODE SMPS CONTROLLER FAMILY WITH VARIOUS UVLO AND MAX DUTY CYCLE
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Technical Specifications
Parameters and characteristics for this part
| Specification | MIC38C43XYM |
|---|---|
| Clock Sync | False |
| Control Features | Frequency Control |
| Duty Cycle (Max) [Max] | 96 % |
| Frequency - Switching | 500 kHz |
| 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 | 8-SOIC |
| Package / Case [x] | 0.154 in |
| Package / Case [y] | 3.9 mm |
| Supplier Device Package | 8-SOIC |
| 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 | 285 | $ 1.77 | |
| Microchip Direct | TUBE | 1 | $ 2.35 | |
| 25 | $ 1.95 | |||
| 100 | $ 1.77 | |||
| 1000 | $ 1.48 | |||
| 5000 | $ 1.37 | |||
| 10000 | $ 1.27 | |||
| Newark | Each | 100 | $ 0.82 | |
Description
General part information
MIC38C43 Series
The MIC38C4x are fixed frequency, high performance, current-mode PWM controllers. BiCMOS devices are pin compatible with 384x bipolar devices but feature several improvements.
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 384x 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 MIC38C4x also features a trimmed oscillator discharge current and bandgap reference.
Documents
Technical documentation and resources
