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TPS65257RHAR

TPS65257RHAR
Mfr. #:
TPS65257RHAR
Descripción:
Switching Voltage Regulators 4.5-16VIN,HIGH CRNT SYNC STEP DOWN
Ciclo vital:
Nuevo de este fabricante.
Ficha de datos:
TPS65257RHAR Ficha de datos
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Más información:
TPS65257RHAR más información TPS65257RHAR Product Details
Atributo del producto
Valor de atributo
Fabricante:
Instrumentos Texas
Categoria de producto:
Reguladores de voltaje de conmutación
RoHS:
Y
Estilo de montaje:
SMD / SMT
Paquete / Caja:
VQFN-40
Corriente de salida:
3 A
Topología:
Dólar
Temperatura mínima de funcionamiento:
- 40 C
Temperatura máxima de funcionamiento:
+ 85 C
Serie:
TPS65257
Embalaje:
Carrete
Voltaje de entrada:
4.5 V to 16 V
Rango de temperatura de funcionamiento:
- 40 C to + 85 C
Marca:
Instrumentos Texas
Sensible a la humedad:
Yes
Corriente de suministro de funcionamiento:
600 uA
Tipo de producto:
Reguladores de voltaje de conmutación
Cantidad de paquete de fábrica:
2500
Subcategoría:
PMIC: circuitos integrados de administración de energía
Unidad de peso:
0.003668 oz
Tags
TPS65257, TPS6525, TPS652, TPS65, TPS6, TPS
Service Guarantees

We guarantee 100% customer satisfaction.

Quality Guarantees

We provide 90-360 days warranty.

If the items you received were not in perfect quality, we would be responsible for your refund or replacement, but the items must be returned in their original condition.
Our experienced sales team and tech support team back our services to satisfy all our customers.

we buy and manage excess electronic components, including excess inventory identified for disposal.
Email us if you have excess stock to sell.

Email: [email protected]

Step1: Vacuum Packaging with PL
Step1:
Vacuum Packaging with PL
Step2: Anti-Static Bag
Step2:
Anti-Static Bag
Step3: Packaging Boxes
Step3:
Packaging Boxes
***as Instruments
4.5v to 16v input, 3A/2A/2A output Synchronous triple buck converter with USB switch 40-VQFN -40 to 85
***et
Synchronous Step Down Converter 40-Pin VQFN EP T/R
***i-Key
IC REG BCK ADJ 3A/2A TRPL 40VQFN
***ical
Power Management IC to 40-Pin VQFN EP T/R
***p One Stop Global
Power Management IC 40-Pin VQFN EP T/R
***
TPS65257 is a power management IC with three step-down buck converters. Both high-side and low-side MOSFETs are integrated to provide fully synchronous conversion with higher efficiency. The converters are designed to simplify its application while giving the designer the option to optimize their usage according to the target application.
***INS
The converters can operate in 5-, 9-, 12- or 15-V systems. The output voltage can be set externally using a resistor divider to any value between 0.8 V and the input supply minus the resistive drops on the converter path. Each converter features enable pin that allows a delayed start-up for sequencing purposes, soft start pin that allows adjustable soft-start time by choosing the soft-start capacitor, and a current limit (RLIM) pin that enables designer to adjust current limit by selecting an external resistor and optimize the choice of inductor. All converters operate in &145;hiccup mode’: Once an over-current lasting more than 10 ms is sensed in any of the converters, they will shut down for 10 ms and then the start-up sequencing will be tried again. If the overload has been removed, the converter will ramp up and operate normally. If this is not the case the converter will see another over-current event and shuts down again repeating the cycle (hiccup) until the failure is cleared. If an overload condition lasts for less than 10 ms, only the relevant converter affected will shut-down and re-start and no global hiccup mode will occur.
***AS INS
The switching frequency of the converters is set by an external resistor connected to ROSC pin. The switching regulators are designed to operate from 300 kHz to 2.2 MHz. The converters operate with 180° phase between then to minimize the input filter requirements.
***AS INSTRUMENT
All converters have peak current mode control which simplifies external frequency compensation. The device has a built-in slope compensation ramp. The slope compensation can prevent sub harmonic oscillations in peak current mode control. A traditional type II compensation network can stabilize the system and achieve fast transient response. Moreover, an optional capacitor in parallel with the upper resistor of the feedback divider provides one more zero and makes the crossover frequency over 100 kHz.
***ASI
All converters feature an automatic low power pulse PFM skipping mode which improves efficiency during light loads and standby operation, while guaranteeing a very low output ripple, allowing for a value of less than 2% at low output voltages.
***AS INSTR
The device incorporates an overvoltage transient protection circuit to minimize voltage overshoot. The OVP feature minimizes the output overshoot by implementing a circuit to compare the FB pin voltage to OVP threshold which is 109% of the internal voltage reference. If the FB pin voltage is greater than the OVTP threshold, the high side MOSFET is disabled preventing current from flowing to the output and minimizing output overshoot. When the FB voltage drops lower than the OVP lower threshold which is 107%, the high side MOSFET is allowed to turn on the next clock cycle.
***as Instruments (TI)
TPS65257 features a supervisor circuit which monitors each buck’s output and the PGOOD pin is asserted once sequencing is done. The PGOOD pin is an open drain output. The PGOOD pin is pulled low when any buck converter is pulled below 85% of the nominal output voltage. The PGOOD is pulled up when all converter outputs are more than 90% of its nominal output voltage. The default reset time is 100 ms. The polarity of the PGOOD is active high.
***AS INSTRUMENT
The push button operation has been designed to allow for automatic system start when the input supply is applied or to provide an integrated ON/OFF system management without the need of additional external components. The behavior of the device will depend on the status of the INT pin (see start-up signals).
***XS
The USB switch provides up to 1-A of current as required by downstream USB devices. When the output load exceeds the current-limit threshold or a short is present, the PMU limits the output current to a safe level by switching into a constant-current mode and pulling the over current logic output low. When continuous heavy overloads and short circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal warning protection circuit shuts off the USB switch and allows the buck converters to carry on operating.
***AS INTRUMENTS
The device implements an internal thermal shutdown to protect itself if the junction temperature exceeds 160°C. The thermal shutdown forces the device to stop operating when the junction temperature exceeds thermal trip threshold. Once the die temperature decreases below 140°C, the device reinitiates the power up sequence. The thermal shutdown hysteresis is 20°C.
Parte # Descripción Valores Precio
TPS65257RHAR
DISTI # 296-29653-1-ND		IC REG BCK ADJ 3A/2A TRPL 40VQFN
RoHS: Compliant
Min Qty: 1
Container: Cut Tape (CT)		2193In Stock
  • 1000:$2.9186
  • 500:$3.4606
  • 100:$4.0652
  • 10:$4.9620
  • 1:$5.5200
TPS65257RHAR
DISTI # 296-29653-6-ND		IC REG BCK ADJ 3A/2A TRPL 40VQFN
RoHS: Compliant
Min Qty: 1
Container: Digi-Reel®		2193In Stock
  • 1000:$2.9186
  • 500:$3.4606
  • 100:$4.0652
  • 10:$4.9620
  • 1:$5.5200
TPS65257RHAR
DISTI # 296-29653-2-ND		IC REG BCK ADJ 3A/2A TRPL 40VQFN
RoHS: Compliant
Min Qty: 2500
Container: Tape & Reel (TR)		Temporarily Out of Stock
  • 2500:$2.6919
TPS65257RHAR
DISTI # TPS65257RHAR		Synchronous Step Down Converter 40-Pin VQFN EP T/R - Tape and Reel (Alt: TPS65257RHAR)
RoHS: Compliant
Min Qty: 2500
Container: Reel		Americas - 0
  • 2500:$2.8900
  • 5000:$2.6900
  • 10000:$2.6900
  • 15000:$2.5900
  • 25000:$2.4900
TPS65257RHAR4.5v to 16v input, 3A/2A/2A output Synchronous triple buck converter with USB switch5000
  • 1000:$2.3000
  • 750:$2.3500
  • 500:$2.7100
  • 250:$3.1200
  • 100:$3.3400
  • 25:$3.7200
  • 10:$3.9900
  • 1:$4.4300
TPS65257RHAR
DISTI # 595-TPS65257RHAR		Switching Voltage Regulators 4.5-16VIN,HIGH CRNT SYNC STEP DOWN
RoHS: Compliant		2490
  • 1:$5.3600
  • 10:$4.8200
  • 100:$3.9400
  • 250:$3.7000
  • 500:$3.3600
  • 1000:$2.8300
  • 2500:$2.6900
TPS65257RHAT
DISTI # 595-TPS65257RHAT		Switching Voltage Regulators 4.5-16VIN,HIGH CRNT SYNC STEP DOWN
RoHS: Compliant		422
  • 1:$6.1600
  • 10:$5.5400
  • 100:$4.5400
  • 250:$4.2600
  • 500:$3.8600
  • 1000:$3.2600
  • 2500:$3.0900
TPS65257RHARSwitching Regulator, Current-mode, 4A, 2200kHz Switching Freq-Max, PQCC40
RoHS: Compliant		30000
  • 1000:$2.6600
  • 500:$2.8000
  • 100:$2.9100
  • 25:$3.0400
  • 1:$3.2700
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Disponibilidad
Valores:
Available
En orden:
1985
Ingrese la cantidad:
El precio actual de TPS65257RHAR es solo de referencia, si desea obtener el mejor precio, envíe una consulta o envíe un correo electrónico directo a nuestro equipo de ventas [email protected]
Precio de referencia (USD)
Cantidad
Precio unitario
Ext. Precio
1
5,36 US$
5,36 US$
10
4,82 US$
48,20 US$
100
3,94 US$
394,00 US$
250
3,70 US$
925,00 US$
500
3,36 US$
1 680,00 US$
1000
2,83 US$
2 830,00 US$
Debido a la escasez de semiconductores a partir de 2021, el precio inferior es el precio normal antes de 2021. Envíe una consulta para confirmar.
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