ORDERING INFORMATION The TL284xB and TL384xB series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Internally implemented circuits include an undervoltage lockout (UVLO) and a precision reference that is trimme.
• Low Start-Up Current (<0.5 mA)
• Trimmed Oscillator Discharge Current
• Current Mode Operation to 500 kHz
• Automatic Feed-Forward Compensation
• Latching PWM for Cycle-by-Cycle Current
Limiting
• Internally Trimmed Reference With Undervoltage Lockout
• High-Current Totem-Pole Output Undervoltage Lockout With Hysteresis
• Double-Pulse Suppression
D (SOIC) OR P (PDIP) PACKAGE (TOP VIEW)
COMP VFB
ISENSE RT/CT
1 2 3 4
8 VREF 7 VCC 6 OUTPUT
5 GND
D (SOIC) PACKAGE (TOP VIEW)
COMP NC
VFB NC
ISENSE NC
RT/CT
1 2 3 4 5 6 7
14 VREF 13 NC 12 VCC 11 VC 10 OUTPUT 9 GND 8 POWER GROUND
NC − No int.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | TL2844 |
Texas Instruments |
Current-Mode PWM Controllers | |
2 | TL2842 |
Texas Instruments |
Current-Mode PWM Controllers | |
3 | TL2842B |
Texas Instruments |
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS | |
4 | TL2843 |
Texas Instruments |
Current-Mode PWM Controllers | |
5 | TL2843B |
Texas Instruments |
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS | |
6 | TL2843B-Q1 |
Texas Instruments |
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLER | |
7 | TL2845 |
Texas Instruments |
Current-Mode PWM Controllers | |
8 | TL2845B |
Texas Instruments |
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS | |
9 | TL287 |
Texas Instruments |
JFET-INPUT OPERATIONAL AMPLIFIERS | |
10 | TL288 |
Texas Instruments |
JFET-INPUT OPERATIONAL AMPLIFIERS | |
11 | TL28L92 |
Texas Instruments |
3.3-V/5-V Dual Universal Asynchronous Receiver/Transmitter | |
12 | TL2003 |
Thomson |
Thyristors |