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TPS65257RHAT

TPS65257RHAT
Mfr. #:
TPS65257RHAT
Description:
Switching Voltage Regulators 4.5-16VIN,HIGH CRNT SYNC STEP DOWN
Lifecycle:
New from this manufacturer.
Datasheet:
TPS65257RHAT Datasheet
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union
ECAD Model:
More Information:
TPS65257RHAT more Information TPS65257RHAT Product Details
Product Attribute
Attribute Value
Manufacturer:
Texas Instruments
Product Category:
Switching Voltage Regulators
RoHS:
Y
Mounting Style:
SMD/SMT
Package / Case:
VQFN-40
Output Current:
3 A
Topology:
Buck
Minimum Operating Temperature:
- 40 C
Maximum Operating Temperature:
+ 85 C
Series:
TPS65257
Packaging:
Reel
Input Voltage:
4.5 V to 16 V
Operating Temperature Range:
- 40 C to + 85 C
Brand:
Texas Instruments
Moisture Sensitive:
Yes
Operating Supply Current:
600 uA
Product Type:
Switching Voltage Regulators
Factory Pack Quantity:
250
Subcategory:
PMIC - Power Management ICs
Unit Weight:
0.003668 oz
Tags
TPS65257, TPS6525, TPS652, TPS65, TPS6, TPS
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We guarantee 100% customer satisfaction.

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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.
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Email: info@omo-ic.com

Step1: Vacuum Packaging with PL
Step1:
Vacuum Packaging with PL
Step2: Anti-Static Bag
Step2:
Anti-Static Bag
Step3: Packaging Boxes
Step3:
Packaging Boxes
    D***i
    D***i
    MK

    ok

    2019-05-18
    L***k
    L***k
    PL

    All OK

    2019-07-12
***as Instruments
4.5v to 16v input, 3A/2A/2A output Synchronous triple buck converter with USB switch 40-VQFN
***et Europe
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
***AS
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.
***AS INSRUMENT
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 Instruments (TI)
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 INSTRUMEN
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.
***AS INSTRU
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 Instruments (TI)
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.
***OMO Electronic
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.
***
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).
***
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
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.
Part # Description Stock Price
TPS65257RHAT
DISTI # 26644466		Power Management IC to 40-Pin VQFN EP T/R
RoHS: Compliant		3750
  • 1000:$2.9466
  • 500:$3.4740
  • 250:$3.8340
TPS65257RHAT
DISTI # 296-32524-1-ND		IC REG BCK ADJ 3A/2A TRPL 40VQFN
RoHS: Compliant
Min Qty: 1
Container: Cut Tape (CT)		Limited Supply - Call
    TPS65257RHAT
    DISTI # 296-32524-6-ND    		IC REG BCK ADJ 3A/2A TRPL 40VQFN
    RoHS: Compliant
    Min Qty: 1
    Container: Digi-Reel®    		Limited Supply - Call
      TPS65257RHAT
      DISTI # 296-32524-2-ND      		IC REG BCK ADJ 3A/2A TRPL 40VQFN
      RoHS: Compliant
      Min Qty: 250
      Container: Tape & Reel (TR)      		Temporarily Out of Stock
      • 250:$4.3068
      TPS65257RHAT
      DISTI # V39:1801_07421426      		Power Management IC to 40-Pin VQFN EP T/R
      RoHS: Compliant      		0
        TPS65257RHAT
        DISTI # TPS65257RHAT        		Synchronous Step Down Converter 40-Pin VQFN EP T/R - Tape and Reel (Alt: TPS65257RHAT)
        RoHS: Compliant
        Min Qty: 250
        Container: Reel        		Americas - 0
        • 250:$3.2900
        • 500:$3.1900
        • 1000:$3.0900
        • 1500:$2.9900
        • 2500:$2.8900
        TPS65257RHAT
        DISTI # TPS65257RHAT        		Synchronous Step Down Converter 40-Pin VQFN EP T/R (Alt: TPS65257RHAT)
        RoHS: Compliant
        Min Qty: 250
        Container: Tape and Reel        		Europe - 0
        • 250:€3.8900
        • 500:€3.4900
        • 1000:€3.0900
        • 1500:€2.9900
        • 2500:€2.7900
        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        		0
        • 250:$4.2600
        • 500:$3.8600
        • 1000:$3.2600
        • 2500:$3.0900
        TPS65257RHATSwitching Regulator, Current-mode, 4A, 2200kHz Switching Freq-Max, PQCC40
        RoHS: Compliant        		81
        • 1000:$3.0700
        • 500:$3.2300
        • 100:$3.3600
        • 25:$3.5000
        • 1:$3.7700
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        Availability
        Stock:
        Available
        On Order:
        2500
        Enter Quantity:
        Current price of TPS65257RHAT is for reference only, if you want to get best price, please submit a inquiry or direct email to our sales team sales@omo-ic.com
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