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Manufacturer Part #
MIC38C44-1YM
MIC38C42 Series 20 V 6 mA 1 MHz Surface Mount BICMOS PWM Controller - SOIC-14
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| Mfr. Name: | Microchip | ||||||||||
| Standard Pkg: | Product Variant Information section Available PackagingPackage Qty:54 per Tube Package Style:SOIC-14 Mounting Method:Surface Mount | ||||||||||
| Date Code: | |||||||||||
Product Specification
Shipping Information:
ECCN:
PCN Information:
Microchip has released a new Product Documents for the MIC38C42/3/4/5 - BiCMOS Current-Mode PWM Controllers of devices.Notification Status: FinalDescription of Change: 1) Converted Micrel document MIC38C42/43/44/45 to Microchip data sheet DS20006436A. 2) Minor text changes throughout.Impacts to Data Sheet: NoneReason for Change: To Improve ProductivityChange Implementation Status: CompleteDate Document Changes Effective: 19 Oct 2020NOTE: Please be advised that this is a change to the document only the product has not been changed
Urgent PCN: Discontinuance of UNIB assembly site (Unisem Batam) as a qualified location for selected products available in 8/14/16L PDIP, 20/28L SSOP, and 14/16/20L SOIC, packagesDescription of Change: Due to unforeseen circumstances, that are out of Microchip’s control, for some of the products affected full qualification will be made available at a date after shipment from a different location as Microchip plans to continue to fulfill orders by shipping product from other assembly locations as soon as possible as to not disrupt customer ordersReason for Change:Due to unforeseen business conditions the UNIB location will be discontinued by Unisem as an assembly site. Effective immediately
Part Status:
Technical Attributes
| Supply Current-Max: | 6mA |
| Supply Voltage: | 20V |
| Frequency-Max: | 1MHz |
| Duty Cycle-Min: | 0% |
| Duty Cycle-Max: | 96% |
| Operating Temp Range: | -40°C to +85°C |
| Package Style: | SOIC-14 |
| Mounting Method: | Surface Mount |
Features & Applications
The MIC38C44-1YM is a BiCMOS, fixed frequency, high performance, current-mode PWM controller with a maximum duty cycle of 50%. Available in surface mount SOIC-14 package.
This device is pin compatible with 384x bipolar devices but feature several improvements. The undervoltage lockout circuitry allows the MIC38C44 to start up at 14.5 V and operate down to 9 V.
Features:
- Fast 40ns output rise and 30ns output fall times
- –40°C to +85°C temperature range meets UC284x specifications
- High-performance, low-power BiCMOS Process
- Ultralow start-up current (50 μA typical)
- Low operating current (4 mA typical)
- CMOS outputs with rail-to-rail swing
- ≥ 500 kHz current-mode operation
- Trimmed 5 V bandgap reference
- Pin-for-pin compatible with UC3842/3843/3844/3845(A)
- Trimmed oscillator discharge current
- UVLO with hysteresis
- Low cross-conduction currents
Applications:
- Current-mode, off-line, switched-mode power supplies
- Current-mode, dc-to-dc converters.
- Step-down “buck” regulators
- Step-up “boost” regulators
- Flyback, isolated regulators
- Forward converters
- Synchronous FET converters
Available Packaging
Package Qty:
54 per Tube
Package Style:
SOIC-14
Mounting Method:
Surface Mount