AAC243E-S8A-G-LF-TR More Semiconductors - ICs by Microchip Technology
Current Mode PWM Controller
| Status: | Active |
|---|---|
| Series: | AAC243 |
| RoHS: | Compliant |
Features in common with the x842/x843 design include current mode control, pulse-pulse current limiting, undervoltage lockout with hysteresis and an on-board voltage reference. In addition, as with the x842/x843 controllers, the AAC242 is differentiated from the AAC243 by its undervoltage lockout thresholds. The AAC242 has turnon/turn-off thresholds of 16V and 10V respectively, while the AAC243 thresholds are 8.4V and 7.6V respectively. The AAC243 is targeted for battery applications, based on their lower undervoltage and hysteresis levels. The lower V-ILimit options of the AAC242/43 of 0.25V, as compared to the 1.0V for the AAC142/43, allow for lower current sense measurements.
Other features designed into this family of Current Mode Controllers are intended to enhance their functionality and range of use. The maximum Start-Up current is substantially lower than the x842/x843. Output drive rise and fall times of 50ns for the AAC242/43 compare to 150ns maximum rise and fall times for the x842/x843. Other unique features of the AAC242/43 include an integrated soft-start function tied to the clock of the internal oscillator (approximately 330 cycles), leading edge current blanking of 100ns and a more robust, higher current MOS output drive stage capable of driving much higher source and sink currents. The enhancements in drive capability, as well as rise and fall times, enable the AAC242/43 to operate up to 1MHz vs. the 500kHz maximum typically ascribed for the x842/843.
Where to Buy
Prices starting from US$1.32
Features
| Pulse-Pulse Current Limiting, with 0.25V I-Limit Threshold (AAC242/43) |
| On-Chip Bandgap Voltage Reference |
| AAC243 Undervoltage Lockout with Hysterisis for 8.4V Turn-on/7.6V Turn-off |
| Overvoltage Protection Zener |
| Enhanced Rise and Fall Performance, Higher Current Output Drive Stage for Operation to 1MHz |
| Peak Current Mode Control |
| Integrated Soft-Start Function, (~330 Clock Cycles) |
| Leading Edge Current Blanking for Reduced Filtering (100ns) |
| Offered in RoHS Compliant 8-Pin SOIC, 8-Pin PDIP, and 3mm x 3mm DFN Packages |
| Rated for Extended Industrial Temperature Range (-40° C to +105° C) |
Specifications
| Supported Topologies | Boost, SEPIC, Flyback |
|---|---|
| Supported Outputs | 1 |
| Minimum Input Voltage (V) | 0 |
| Maximum Input Voltage (V) | 30 |
| Minimum Output Voltage (V) | 4.95 |
| Maximum Output Voltage (V) | 5.05 |
| PFM, Discontinuous, Hyperlight load, or Skip Mode | False |
| Operating Frequency (Hz) | 47-57kHz |
| External Clock Sync | False |
| Power Good Signal | False |
| Soft Start | False |
| Internal Compensation | False |
| Internal Voltage Bias | False |
| Enable Pin | False |
| Current Limit / Short Circuit Protection | False |
| Input UVLO Typ (V) | 0 |
| Operating Supply Current (mA) | 0 |
| Minimum Driver Output Voltage (V) | 0 |
| Maximum Driver Output Voltage (V) | 0 |
| Max Continuous Current per Output | 0 |
| Pins | Packaging | 8 | SOIC |
| Temp Range | -40C to +105C |
| Packing Media | Tape and reel (2500) |
Last 6 months Inventory & Pricing History
Environmental Information
| JEDEC Indicator | e3 |
|---|---|
| ROHS | Compliant |
| China EFUP | Compliant |
| Device Weight (g) | 0.078 |
| Shipping Weight (kg) | 0.230303 |
| Lead Count | 8 |
| Package Type | SOIC |
| Package Width or Size | .150In(3.90mm) |
| Soldering Composition | Matte Tin |
Alternative Descriptions
| Current Mode Pwm Controller 8 Soic 3.90Mm(.150In) T/R Rohs Compliant: Yes |Microchip Technology AAC243E-S8A-G-LF-TR | Newark Electronics |
| Switching Controllers Current Mode PWM Controller | Future Electronics |
Frequently Asked Questions
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Additional datasheets, footprints and schematics for AAC243E-S8A-G-LF-TR are listed on our Part Details page. You can also find images and similar parts to AAC243E-S8A-G-LF-TR on this page.
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The AAC243E-S8A-G-LF-TR is listed under Semiconductors - ICs > More Semiconductors - ICs.
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Is the AAC243E-S8A-G-LF-TR RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Microchip Technology.
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Authorised distributors including Microchip Technology, Newark Electronics, Future Electronics, Avnet America and EBV Elektronik have stock available or on a lead time for AAC243E-S8A-G-LF-TR.
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