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TI TL3844BDR

Fabricante
TI
Cód. da peça
TL3844BDR
Nº LCSC
C485109
Emb.
SOIC-14
Número do Cliente
Atrib. princ.
200mA 0V~30V SOIC-14 DC DC Switching Controllers RoHS
Folha de DadosTI TL3844BDR
Conformidade RoHS2 documentos disponíveis
Garantia em cada pedido
100% Autêntico · Devolução ou Substituição em 30 Dias
Em estoque: 100
100 Em estoque, envio imediato
Mínimo: 1Múltiplo: 1Unidade de venda: Piece
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Qtd.Preço unit.Valor total
1+$ 1.4079$ 1.41
10+$ 1.1702$ 11.70
30+$ 1.0384$ 31.15
100+$ 0.8919$ 89.19
500+$ 0.8252$ 412.60
1,000+$ 0.7959$ 795.90
Encapsulamento Padrão2500/Full Reel
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Especificações do Produto

Tudo
TipoDescrição
CategoriaIntegrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers
FabricanteTI
Emb.SOIC-14
Operating Temperature0℃~+70℃
Output Current200mA
FeaturesSlope compensation;Under-voltage lockout;Constant Voltage (CV);Over Current Protection;Under Voltage Protection
TopologyBoost;Flyback;Forward
Duty Cycle(Max)48%
Feedback System-
Working ModePWM Modulation
Frequency - Switching500kHz
Operating Voltage10V~30V
Output Voltage0V~30V
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Descrição

Tradução por IA

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 trimmed for accuracy at the error amplifier input. Other internal circuits include logic to ensure latched operation, a pulse-width modulation (PWM) comparator that also provides current-limit control, and a totem-pole output stage designed to source or sink high-peak current. The output stage, suitable for driving N-channel MOSFETs, is low when it is in the off state.

The TL284xB and TL 384xB series are pin compatible with the standard TL284x and TL384x with the following improvements. The start-up current is specified to be 0.5 mA (max), while the oscillator discharge current is trimmed to 8.3 mA (typ). In addition, during undervoltage lockout conditions, the output has a maximum saturation voltage of 1.2 V while sinking 10 mA (VCC = 5 V).

Major differences between members of these series are the UVLO thresholds and maximum duty-cycle ranges. Typical UVLO thresholds of 16 V (on) and 10 V (off) on the TLx842B and TLx844B devices make them ideally suited to off-line applications. The corresponding typical thresholds for the TLx843B and TLx845B devices are 8.4 V (on) and 7.6 V (off). The TLx842B and TLx843B devices can operate to duty cycles approaching 100%. A duty-cycle range of 0% to 50% is obtained by the TLx844B and TLx845B by the addition of an internal toggle flip-flop, which blanks the output off every other clock cycle. The TL284xB-series devices are characterized for operation from -40°C to 85°C. The TL384xB-series devices are characterized for operation from 0°C to 70°C.

Recursos

Tradução por IA
  • 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