The UTC U3848/A/B/C is designed to provide several special enhancements to satisfy the needs: Power-Saving mode for low standby power, Over Current Protection (OCP), Over Voltage Protection (OVP), Over Load Protection (OLP), Over Temperature Protection (OTP) etc protection features. IC will be shutdown when either protection arise and can auto-restart. Its f.
IC will be shutdown when either protection arise and can auto-restart. Its frequency may be defined by user through resistor RT to external ground. UVLO featuring typical start-up current 20µA, and VCC(ON) 12.6V, VCC(OFF) 8.1 . Lower typical operation current Icc 3.7mA at inactive output. The output stage, suitable for driving N-Channel MOSFETs, can operate to duty cycles approach 70%. The U3848/A/B/C are fully pin-to-pin compatible with UC3842. But pin RT only connected a resistor to ground to decide switch frequency, and pin FB with an 4kΩ pull up resistor to internal reference voltage. The.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | U3848A |
UTC |
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS | |
2 | U3848B |
UTC |
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS | |
3 | U3848C |
UTC |
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS | |
4 | U3800 |
Vishay Telefunken |
Multi Standard Feature Phone Integrated Circuit | |
5 | U3810BM |
TEMIC Semiconductors |
Multi Standard Feature Phone Integrated Circuit | |
6 | U304 |
Siliconix |
p-channel JFET | |
7 | U305 |
Siliconix |
p-channel JFET | |
8 | U306 |
Intersil Corporation |
(U304 - U306) P-CHANNEL JFET SWITCH | |
9 | U306 |
Siliconix |
p-channel JFET | |
10 | U3079M |
Telefunken Microelectronics |
(U308x) Display Driver | |
11 | U308 |
InterFET |
N-Channel JFET | |
12 | U308 |
Motorola |
JFET VHF/UHF AMPLIFIER |