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UC3848
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Category:ACDC- and -DCDC-power supply
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Product Name:Average current mode PWM controller
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Manufacturers:TI
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Production Batch Number:09+
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Encapsulation:16PDIP, 16SOIC
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Stock Status:There is stock
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Stock Quantity:2600
- Minimum order quantity: 1
- Details:
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The UC3848 series of PWM control ICs makes disconnectors with primary-side average current mode control practical. Average current mode control ensures that the periodic peak switch current and maximum average inductor current for both periods are defined and will not run in a short circuit. The UC3848 can be used to control converters for a variety of topologies.
In addition to the basic functions required for pulse width modulation, the UC3848 implements a patented technique for sensing primary and secondary currents from a primary-side isolated buck converter. A current waveform synthesizer and analog display switch current inductor downhill so that the complete current waveform can be built on the secondary side without actually measuring the primary side.
characteristic
- The secondary side of the utility isolated power supply control IC controls the current
- Accurately programmable maximum duty cycle clamp
- The maximum volt-second product clamps to prevent core saturation
- Practical operation up to 1MHz
- High current (peak) totem pole output driver
- Wideband (8MHz) current error amplifier
- Undervoltage lockout monitors for VCC, VIN and VREF
- The output is low during UVLO
- Low Start-up Current (500μA)
- Precision 5V Reference (1%)
parameter
| |
|
UC3848 |
| topology |
|
Boost, reverse, forward |
| Control method |
|
Current mode |
| Duty cycle (max.) (%) |
|
100 |
| Frequency (max) (khertz) |
|
450 |
| On/Off of Undervoltage Lockout Threshold (5) |
|
13/10 |
| Pins/Packets |
|
16PDIP，16SOIC |
| (#) Regulated output |
|
One |
| Operating temperature range(°C) |
|
0 to 70 |
andUC3848Related ICs are:
| Model |
Manufacturers |
lot number |
encapsulation |
illustrate |
| DP83848TSQ/NOPB |
NSC |
10+11+ |
|
Hong Kong spot, imported original |
| DP83848YB/NOPB |
|
10+11+ |
|
Hong Kong spot, imported original |
| DP83848JSQ/NOPB |
TI |
10+11+ |
LLP40 |
Hong Kong spot, imported original |
| DP83848IVV/NOPB |
|
10+11+ |
|
Hong Kong spot, imported original |
| DP83848MSQ/NOPB |
|
10+11+ |
|
Hong Kong spot, imported original |
| DP83848CVV/NOPB |
|
10+11+ |
|
Hong Kong spot, imported original |
| DP83848JSQ |
NSC |
10+11+ |
LLP |
PHYTER Mini LS Commercial Grade Temperature Single Port 10/100 Mb/s Ethernet Transceiver |
| DP83848MSQ |
NSC |
10+ |
LLP |
Temperature 10/100 Ethernet transceiver |
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UC |
03+ |
SOP |
Pulse-width modulation circuit |
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NSC |
05+ |
LQFP48 |
Brand new original |
| DP83848TSQ |
NSC |
11+ |
LLP-40 |
DP83848T PHYTER Mini-Industrial Temperature Single 10/100 Ethernet Transceiver |
| DP83848IVVX |
NSC |
09+ |
SPQ 1K PCS |
PHYTER industrial temperature single-port 10/100 Mb/s Ethernet physical layer transceiver |
| DP83848IVV |
NSC |
11+ |
QFP48 |
PHYTER industrial temperature single-port 10/100 Mb/s Ethernet physical layer transceiver |
| DP83848CVV |
NSC |
09+ |
LQFP |
PHYTER commercial temperature single-port 10/100 Mb/s Ethernet physical layer transceiver |
| UC3848 |
TI |
09+ |
16PDIP, 16SOIC |
Average current mode PWM controller |
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TI brand product recommendation
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Manufacturers |
lot number |
encapsulation |
illustrate |
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09+ |
16PDIP, 16SOIC |
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