Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - LDO voltage regulator Positive, fixed SC 70 5

2.00

1.75

1.50

1.25

1.00

0.75

0.50

-40

GroundCurrent( A)m

-15 10 35

Free-AirTemperature( C)°

60 85

V =4.3V

V =3.3V

C =1mF

I =10mA

DCKPACKAGE

(TopView)

GND

OUT

TPS797xx

www.ti.com

SLVS332I –MARCH 2001–REVISED OCTOBER 2013

Ultralow I

, 50mA LDO Linear Regulators with Power Good Output

in SC70 Package

Check for Samples: TPS797xx

FEATURES

DESCRIPTION

The TPS797xx family of low-dropout (LDO) voltage

• 50mA Low-Dropout Regulator

regulators offers the benefits of low-dropout voltage

• Ultralow 1.2μA Quiescent Current at 10mA

and ultralow-power operation. The device is stable

• 5-Pin SC70 (DCK) Package

with any capacitor (> 0.47μF). Therefore,

implementations of this device require very little board

• Integrated Power Good Output

space due to the miniaturized packaging and

• Stable With Any Capacitor (> 0.47μF)

potentially small output capacitor. In addition, the

• Dropout Voltage Typically 105mV at 10mA

family includes an integrated open drain active-high

(TPS79733)

power good (PG) output. Intended for use in

microcontroller-based, battery-powered applications,

• Over-Current Limitation

the TPS797xx family low dropout and ultralow-

• –40°C to +85°C Operating Junction

powered operation results in a significant increase in

Temperature Range

system battery operating life. The small packaging

minimizes consumption of board space.

APPLICATIONS

The device is enabled when the applied voltage

• Battery-Powered Microcontrollers and

exceeds the minimum input voltage. The usual PNP

Microprocessors

pass transistor has been replaced by a PMOS pass

element. Because the PMOS pass element behaves

as a low-value resistor, the dropout voltage is very

low, typically 105mV at 10mA of load current, and is

directly proportional to the load current. The

quiescent current is ultralow (1.2μA typically) and is

stable over the entire range of output load current

(0mA to 50mA). When properly configured with a pull-

up resistor, the PG output can be used to implement

a power-on reset or low battery indicator.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (17 pages)

PAGE 1
TPS797xx www.ti.com SLVS332I – MARCH 2001 – REVISED OCTOBER 2013 Ultralow IQ, 50mA LDO Linear Regulators with Power Good Output in SC70 Package Check for Samples: TPS797xx FEATURES DESCRIPTION • • • • • • The TPS797xx family of low-dropout (LDO) voltage regulators offers the benefits of low-dropout voltage and ultralow-power operation. The device is stable with any capacitor (> 0.47μF).
PAGE 2
TPS797xx SLVS332I – MARCH 2001 – REVISED OCTOBER 2013 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure.
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TPS797xx www.ti.com SLVS332I – MARCH 2001 – REVISED OCTOBER 2013 ELECTRICAL CHARACTERISTICS Over operating temperature range TJ = –40°C to +85°C, VIN = VOUT (typ) +0.5V or 2.0V, whichever is greater; IOUT = 0.5mA, VSET, VEN = VIN, and COUT = 1.0μF, unless otherwise noted. Typical values are at TA = +25°C. TPS797xx PARAMETER VIN Input voltage (1) IOUT Continuous output current (2) TEST CONDITIONS IOUT = 3mA IOUT = 10mA MIN TYP MAX UNIT 1.8 5.5 2 5.
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TPS797xx SLVS332I – MARCH 2001 – REVISED OCTOBER 2013 www.ti.com FUNCTIONAL BLOCK DIAGRAM VIN VOUT Current Sense R1 ILIM GND R2 VREF = 1.235V VIN Bandgap Reference PG Table 1. TERMINAL FUNCTIONS TERMINAL NAME DESCRIPTION NO. GND 2 Ground NC 3 No connection OUT 5 The OUT terminal provides the regulated output voltage of the device. PG 1 The PG terminal for the fixed voltage option devices is an open drain, active-high output that indicates the status of VO (output of the LDO).
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TPS797xx www.ti.com SLVS332I – MARCH 2001 – REVISED OCTOBER 2013 TPS797xx PG Timing Diagram VIN VMIN (1) t VOUT Threshold Voltage (2) VIT+ (2) VIT- t PG Output t NOTES: (1) VMIN = VOUT + VDO. (2) The PG trip voltage is typically 10% lower than the output voltage (90% VO). VIT+ to VIT- is the hysteresis voltage.
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TPS797xx SLVS332I – MARCH 2001 – REVISED OCTOBER 2013 www.ti.com TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs OUTPUT CURRENT OUTPUT VOLTAGE vs OUTPUT CURRENT 3.465 1.890 VIN = 4.3V COUT = 1mF TA = +25°C VOUT = 3.3V Output Voltage (V) 3.399 3.366 VIN = 2.8V COUT = 1mF TJ = +25°C VOUT = 1.8V 1.872 1.854 Output Voltage (V) 3.432 3.333 3.300 3.267 3.234 1.836 1.818 1.800 1.782 1.764 3.201 1.746 3.168 1.728 1.710 3.135 0 10 20 30 40 50 0 10 20 Output Current (mA) Figure 2.
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TPS797xx www.ti.com SLVS332I – MARCH 2001 – REVISED OCTOBER 2013 TYPICAL CHARACTERISTICS (continued) OUTPUT IMPEDANCE vs FREQUENCY 700 40 VIN = 4.3V VOUT = 3.3V COUT = 1mF TJ = +25°C 30 VIN = 3.
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TPS797xx SLVS332I – MARCH 2001 – REVISED OCTOBER 2013 www.ti.com TYPICAL CHARACTERISTICS (continued) VIN = 4.3V COUT = 4.7mF VOUT = 3.3V 100 50 Output Current (mA) 0 -50 10 -100 Change In Output Voltage (mV) TPS79733 LOAD TRANSIENT RESPONSE 5 1mA 0 0 200 400 600 800 1k 12 14 16 18 2k Time (ms) Figure 13.
PAGE 9
TPS797xx www.ti.com SLVS332I – MARCH 2001 – REVISED OCTOBER 2013 APPLICATION INFORMATION The TPS797xx family of low-dropout (LDO) regulators have been optimized for use in micropower applications. They feature extremely low dropout voltages and ultralow quiescent current (1.2μA typically). The maximum-power-dissipation limit is determined using the following equation: T max - TA PD(max) = J RqJA (1) A typical application circuit is shown in Figure 14. Where: TJmax is the temperature.
PAGE 10
TPS797xx SLVS332I – MARCH 2001 – REVISED OCTOBER 2013 www.ti.com The primary benefits of using the TPS797xx to power low-power digital devices include: • Regulated output voltage that protects the device from battery droop and noise on the line (for example, switch bounce) • Smooth, monotonic power up • PG signal for controlled device RESET • Potential to use an existing 5V power rail to power a 3.
PAGE 11
PACKAGE OPTION ADDENDUM www.ti.
PAGE 12
PACKAGE OPTION ADDENDUM www.ti.com 1-Oct-2013 (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined.
PAGE 13
PACKAGE MATERIALS INFORMATION www.ti.com 4-Jun-2014 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TPS79718DCKR SC70 DCK 5 3000 180.0 8.4 2.41 2.41 1.2 4.0 8.0 Q3 TPS79718DCKR SC70 DCK 5 3000 178.0 9.0 2.4 2.5 1.2 4.0 8.0 Q3 TPS79718DCKT SC70 DCK 5 250 178.0 9.0 2.4 2.5 1.2 4.0 8.
PAGE 14
PACKAGE MATERIALS INFORMATION www.ti.com 4-Jun-2014 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS79718DCKR SC70 DCK 5 3000 202.0 201.0 28.0 TPS79718DCKR SC70 DCK 5 3000 180.0 180.0 18.0 TPS79718DCKT SC70 DCK 5 250 180.0 180.0 18.0 TPS79718DCKT SC70 DCK 5 250 202.0 201.0 28.0 TPS797285DCKR SC70 DCK 5 3000 202.0 201.0 28.0 TPS797285DCKT SC70 DCK 5 250 202.0 201.0 28.
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