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TPS560200DBVR

500 mA synchronous buck converter, 4.5-17 V in, D-CAP2, Eco-mode, SOT-23-5

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Pieza del fabricante：

TPS560200DBVR

Paquete：

SOT-23-5 (2.90 x 1.60 x 1.45 mm)

Marca：
Categorías de productos：
Compromiso de calidad
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Descripción

Productos

The TPS560200DBVR from Texas Instruments is a 4.5 V to 17 V input, 500 mA synchronous buck converter with integrated MOSFETs in a 5-pin SOT-23 package. It uses D-CAP2 mode control for fast transient response without external compensation, and features advanced Eco-mode for high efficiency at light loads with a 600 kHz switching frequency.

Especificaciones

Input Voltage Range 4.5 V to 17 V
Corriente de salida 500 mA continuous
Output Voltage Range 0.8 V to 6.5 V (adjustable)
Switching Frequency 600 kHz
Reference Voltage 0.8 V (+/-1.3% accuracy)
High-Side FET RDS(on) 0.95 ohm
Low-Side FET RDS(on) 0.33 ohm
Temperatura de funcionamiento -40°C to 125°C (TJ)

Características

  • Integrated monolithic high-side and low-side MOSFETs
  • D-CAP2 mode control enables fast transient response
  • No external compensation components required
  • Advanced Eco-mode for high light-load efficiency
  • 600 kHz fixed switching frequency
  • 2 ms internal soft-start with safe startup into pre-biased output
  • Cycle-by-cycle overcurrent protection with hiccup mode
  • Thermal shutdown at 170°C (non-latching)

Aplicaciones

  • Set-top boxes and modems
  • DTV and ADSL equipment
  • Point-of-load regulation in distributed power systems
  • Industrial and consumer electronics power supplies

The TPS560200DBVR from Texas Instruments is a 500 mA synchronous step-down (buck) converter that integrates both high-side and low-side MOSFETs in a tiny 5-pin SOT-23 package. The device operates from a 4.5 V to 17 V input and produces an adjustable output from 0.8 V to 6.5 V with +/-1.3% reference accuracy over temperature. The D-CAP2 control architecture provides fast transient response without requiring external compensation components, simplifying design and reducing component count. Advanced Eco-mode automatically transitions to pulse-skipping operation at light loads, significantly improving efficiency compared to continuous PWM operation. The converter switches at a fixed 600 kHz frequency, enabling the use of small external inductors and capacitors. Protection features include cycle-by-cycle overcurrent protection with hiccup mode, output undervoltage protection, and thermal shutdown at 170°C.

The TPS560200DBVR operates using the D-CAP2 control mode with four key subsystems: (1) The adaptive on-time controller generates the high-side MOSFET gate drive pulses with an on-time proportional to the output-to-input voltage ratio, maintaining a pseudo-fixed 600 kHz switching frequency. A feedback comparator monitors the output voltage via the VSENSE pin and triggers on-time pulses when the output falls below the reference threshold, providing fast transient response. (2) The integrated power stage contains a 0.95 ohm high-side N-channel MOSFET and a 0.33 ohm low-side N-channel MOSFET, with bootstrap circuitry for high-side gate drive. The low-side MOSFET enables synchronous rectification for high efficiency. (3) The advanced Eco-mode controller monitors the inductor current through the low-side MOSFET RDS(on). When the load current decreases below the Eco-mode threshold, the converter transitions from continuous PWM to pulse-skipping DCM operation, reducing switching losses and improving light-load efficiency. (4) The protection circuitry includes cycle-by-cycle valley current limiting, output undervoltage detection with 7 us delay before hiccup, and thermal shutdown at 170°C.

Pin No. Nombre de la clavija Función
1 ES Enable input; float to enable, pull low to disable
2 GND Power ground for control circuitry and low-side FET
3 PH Switch node; connects to inductor, bootstrap capacitor
4 VIN Input supply voltage (4.5 V to 17 V)
5 VSENSE Feedback input; connect to output via resistor divider
  • Set-top box and modem power regulation where 5 V or 12 V input bus is stepped down to 3.3 V or 1.8 V rails with minimal external components
  • DTV and ADSL equipment requiring compact point-of-load buck conversion with D-CAP2 fast transient response for digital IC supplies
  • Industrial sensor nodes needing efficient 12 V to 3.3 V conversion with advanced Eco-mode for battery conservation during idle periods
  • Consumer electronics POL regulation where the 5-pin SOT-23 footprint minimizes board area and the 600 kHz switching frequency allows small inductors
Modelo Marca Vin Range Iout Paquete
TPS562200DDCR TI 4.5-17 V 2 A SOT-23-6
TPS560200DBVT TI 4.5-17 V 500 mA SOT-23-5
TPS563200DDCR TI 4.5-17 V 3 A SOT-23-6
AP63200WU-7 Diodos Inc 3.8-32 V 2 A SOT-23-6
MP8759GD-Z MPS 4.5-18 V 4 A TSOT-23-8
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