Part Number: TPS71710DCKR

Manufacturer: Texas Instruments

Description: LDO Voltage Regulators L-N H-B PSRR 150mA

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Technical Specifications of TPS71710DCKR

Datasheet  TPS71710DCKR datasheet
Category Integrated Circuits (ICs)
Family PMIC – Voltage Regulators – Linear
Manufacturer Texas Instruments
Packaging Tape & Reel (TR)
Part Status Active
Regulator Topology Positive Fixed
Voltage – Output 1V
Current – Output 150mA
Voltage – Dropout (Typical)
Number of Regulators 1
Voltage – Input 2.5 V ~ 6.5 V
Current – Limit (Min) 200mA
Operating Temperature -40°C ~ 125°C
Mounting Type Surface Mount
Package / Case 5-TSSOP, SC-70-5, SOT-353
Supplier Device Package SC-70-5

Low-dropout, low-power linear regulators in the five-pin SOT, ultra-small TPS71710DCKR series offer very robust power-supply rejection while retaining a shallow 45-A ground current. A complex BiCMOS technology and a PMOS pass device enable the family’s quick startup, incredibly low noise, high transient responsiveness, and good PSRR performance.

The TPS71710DCKR achieves a worst-case accuracy of 3% throughout all load, line, process, and temperature fluctuations by using a 1-F ceramic output capacitor, a precise voltage reference, and a feedback loop. The device family is available in a compact SOT (SC70-5) packaging, a 2-mm WSON-6 package with a thermal pad, and a 1.5-mm WSON-6 package are perfect for small form factor portable equipment. The device family is completely specified from TJ = -40°C to 125°C (such as wireless handsets and PDAs).

TPS71710DCKR Feature Description

Internal Current Limit

The regulator is protected by the internal current limit of the TPS71710DCKR when there is a problem. The output supplies a fixed amount of current during the current limit, primarily independent of output voltage. Avoid leaving a device in a current-limit condition for too long if you want it to function reliably. A body diode that conducts current when the voltage at OUT is greater than the voltage at IN is included in the PMOS pass element of the TPS71710DCKR. Since this current is unrestricted, external limiting may be necessary if prolonged reverse voltage operation is anticipated.


Enable pin (EN) levels for both standard and low voltage TTL-CMOS devices are active high. EN can be connected to IN if shutdown capability is not needed. 7.3.3 Startup and Noise Reduction Capacitor If the noise reduction capacitor, CNR, is present, fixed voltage versions of the TPS717 use a quick-start circuit to charge it quickly. This circuit can both have fast start-up times and extremely low output noise.

Because of the high impedance of the NR pin, a low-leakage CNR capacitor must be used; most ceramic capacitors are suitable in this setup. Remember to apply VIN first and drive the enable pin high for the quickest start-up. Starting up takes a little longer if EN and IN are linked. It takes about 135 s for the quick-start switch to close. Use a 0.01-F or less capacitor to guarantee that CNR is ultimately charged during the quick-start period.

A voltage divider on the band-gap reference voltage is used for output voltages below 1.6 V to improve output regulation performance for lower output voltages. When paired with the noise reduction capacitor (CNR), this setup adds a second resistor to the quick-start circuit, slowing start-up times for output voltages below 1.6 V.

Under voltage Lockout (UVLO)

The TPS71710DCKR uses an under-voltage lockout circuit to keep the output disabled until the internal circuitry works appropriately. Undershoot transients on the input are commonly ignored if they last less than 5 s because the UVLO circuit has limited resilience to glitches. The UVLO circuit might not have enough headroom to keep the output entirely off when the input is less than 1.4 V.

Minimum Load

When there is no output load, the TPS717 is stable. Conventional PMOS LDO regulators have smaller loop gains at very low output loads. The TPS71710DCKR uses a novel low-current mode circuit to improve output voltage regulation performance down to zero output current by increasing loop gain under extremely light or no-load conditions.

Thermal Protection

When the junction temperature reaches roughly 160°C, thermal protection turns off the output to allow the device to cool. The output circuitry becomes more functional when the junction temperature reaches about 140°C. The thermal protection circuit can cycle on and off depending on power dissipation, thermal resistance, and outside temperature. This cycling controls the regulator’s ability to dissipate energy, preventing overheating-related damage. Any propensity for the thermal protection circuit to trigger denotes excessive power dissipation or a subpar heat sink. Limit junction temperature to a maximum of 125°C for dependable operation.

Until the thermal protection is activated, raising the ambient temperature, use the worst-case loads and signal conditions to estimate the margin of safety in the entire design (including the heat sink). Trigger thermal protection at least 35 degrees above the highest ambient temperature anticipated for the application in question for increased reliability. At the worst-case load and highest expected ambient temperature, this arrangement results in a worst-case junction temperature of 125°C. The TPS717’s internal circuitry is designed to defend against overload circumstances. Using adequate heat sinking is not what this circuitry is meant to do. Device reliability is decreased by repeatedly putting the TPS717 into thermal shutdown.

TPS71710DCKR Applications

  • Camera Sensor Power
  • Mobile Phone Handsets
  • PDAs and Smartphones
  • Wireless LAN, Bluetooth®

TPS71710DCKR Specifications

EU RoHS Compliant
Part Status Active
HTS 8542.39.00.01
Automotive No
Type LDO
Number of Outputs 1
Polarity Positive
Accuracy (%) ±3
Process Technology BiCMOS
Output Type Fixed
Output Voltage (V) 1
Maximum Output Current (A) 0.15
Minimum Input Voltage (V) 2.5
Maximum Input Voltage (V) 6.5
Line Regulation 125uV/V(Typ)
Load Regulation 70uV/mA(Typ)
Typical Ground Current @ Full Load (mA) 0.1
Junction to Ambient 279.2°C/W
Junction to Case 57.5°C/W
Special Features Current Limit Excellent Line and Load Transient Response Thermal Shutdown Protection
Minimum Operating Temperature (°C) -40
Maximum Operating Temperature (°C) 125
Packaging Tape and Reel
Mounting Surface Mount
Package Height 1(Max)
Package Width 1.4(Max)
Package Length 2.15(Max)
PCB changed 5
Standard Package Name SOT
Supplier Package SC-70
Pin Count 5
Lead Shape Gull-wing


Use Texas Instruments’ LDO TPS71710DCKR linear regulator when sensitive systems require stable voltages. It is just about 3% accurate overall. 0.17@150mA V is the normal dropout voltage for it. The maximum power dissipation of this gadget is 320 mW. The single output of this voltage regulator can produce currents of up to 0.15 A. Use this to implement your circuit, which needs a minimum input voltage of 2.5 V and a maximum input voltage of 6.5 V.

This is the best power management, with a set output voltage of 1 V. Use line regulation of 125uV/V and load regulation of 120uV/mA (Typ) to operate at a steady current (Typ). It can dissipate up to 320 mW of power. This component will be sent in tape and reel packing to facilitate quick mounting and secure transportation. It has a positive polarity. The operational temperature range for this voltage regulating device is -40 °C to 125 °C.’


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