Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - LDO voltage regulator Positivbe, adjustable TO 263 5

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 

SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D 3-A Low-Dropout Voltage Regulator

D Available in 1.5-V, 1.8-V, 2.5-V, and 3.3-V

Fixed-Output and Adjustable Versions

D Open Drain Power-Good (PG) Status

Output (Fixed Options Only)

D Dropout Voltage Typically 150 mV at 3 A

(TPS75733)

D Low 125 µA Typical Quiescent Current

D Fast Transient Response

D 3% Tolerance Over Specified Conditions for

Fixed-Output Versions

D Available in 5-Pin TO−220 and TO−263

Surface-Mount Packages

D Thermal Shutdown Protection

description

The TPS757xx family of 3-A low dropout (LDO) regulators contains four fixed voltage option regulators with

integrated power-good (PG

) and an adjustable voltage option regulator. These devices are capable of supplying

3 A of output current with a dropout of 150 mV (TPS75733). Therefore, the device is capable of performing a

3.3-V to 2.5-V conversion. Quiescent current is 125 µA at full load and drops down to less than 1 µA when the

device is disabled. The TPS757xx is designed to have fast transient response for large load current changes.

t − Time − µs

TPS75715

LOAD TRANSIENT RESPONSE

I − Output Current − A

∆

− Change in Output Voltage − mV

−100

0604020 80 100 140120 160 180 200

−50

= 1.5 V

= 100 µF

−150 2

0.75 A

100

150

100

150

200

250

−40 −25 −10 5 20 35 50 65 80 95 110 125

− Junction Temperature − °C

− Dropout Voltage − mV

TPS75733

DROPOUT VOLTAGE

JUNCTION TEMPERATURE

= 3 A

= 3.3 V

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.

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TO−220 (KC) PACKAGE

(TOP VIEW)

GND

OUTPUT

FB/PG

TO−263 (KTT) PACKAGE

(TOP VIEW)

GND

OUTPUT

FB/PG

Summary of content (28 pages)

PAGE 1
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 D 3-A Low-Dropout Voltage Regulator D Available in 1.5-V, 1.8-V, 2.5-V, and 3.
PAGE 2
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 description (continued) Because the PMOS device behaves as a low-value resistor, the dropout voltage is low (typically 150 mV at an output current of 3 A for the TPS75733) and is directly proportional to the output current.
PAGE 3
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 functional block diagram—adjustable version VOUT VIN Current Sense UVLO SHUTDOWN ILIM R1 _ GND + FB EN UVLO R2 Thermal Shutdown External to the Device Bandgap Reference VIN Vref = 1.22 V functional block diagram—fixed version VOUT VIN UVLO Current Sense SHUTDOWN ILIM _ R1 + GND UVLO EN R2 Thermal Shutdown Vref = 1.
PAGE 4
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 TPS757xx PG timing diagram VIN1 VUVLO VUVLO t VOUT VIT +(see Note A) Threshold Voltage VIT − (see Note A) t PG Output t NOTE: VIT −Trip voltage is typically 9% lower than the output voltage (91%VO). VIT− to VIT+ is the hysteresis voltage. detailed description The TPS757xx family includes four fixed-output voltage regulators (1.
PAGE 5
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 detailed description (continued) input voltage (IN) The VIN terminal is an input to the regulator. output voltage (OUTPUT) The VOUTPUT terminal is an output to the regulator. absolute maximum ratings over operating junction temperature range (unless otherwise noted)Ĕ Input voltage range‡, VI . . . . . . . . . . . . . . . . . . . . . . . .
PAGE 6
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 electrical characteristics over recommended operating junction temperature range (TJ = −40°C to 125°C), VI = VO(typ) + 1 V, IO = 1 mA, EN = 0 V, Co = 100 µF (unless otherwise noted) PARAMETER TEST CONDITIONS 1.22 V ≤ VO ≤ 5.5 V, Adjustable voltage Output voltage (see Note 2) MIN TJ = 25°C 1.22 V ≤ VO ≤ 5.
PAGE 7
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 electrical characteristics over recommended operating junction temperature range (TJ = −40°C to 125°C), VI = VO(typ) + 1 V, IO = 1 mA, EN = 0 V, Co = 100 µF (unless otherwise noted) (continued) PARAMETER TEST CONDITIONS Input current (EN) MIN EN = VI −1 EN = 0 V −1 High level EN input voltage TYP 0 UNIT 1 µA 1 µA 2 V Low l
PAGE 8
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 TYPICAL CHARACTERISTICS TPS75733 TPS75715 OUTPUT VOLTAGE vs OUTPUT CURRENT OUTPUT VOLTAGE vs OUTPUT CURRENT 3.345 1.545 VI = 2.8 V TJ = 25°C VI = 4.3 V TJ = 25°C 1.530 VO − Output Voltage − V VO − Output Voltage − V 3.330 3.315 3.3 3.285 1.515 1.5 1.485 1.470 3.270 3.255 0 1 1.
PAGE 9
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 TYPICAL CHARACTERISTICS TPS757xx TPS75733 GROUND CURRENT vs JUNCTION TEMPERATURE POWER SUPPLY RIPPLE REJECTION vs FREQUENCY 90 150 PSRR − Power Supply Ripple Rejection − dB 125 100 75 −40 −25 −10 5 20 35 50 65 80 VI = 4.
PAGE 10
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 TYPICAL CHARACTERISTICS TPS75701 TPS75733 DROPOUT VOLTAGE vs INPUT VOLTAGE DROPOUT VOLTAGE vs JUNCTION TEMPERATURE 250 250 IO = 3 A IO = 3 A VO = 3.3 V VDO − Dropout Voltage − mV VDO − Dropout Voltage − mV TJ = 125°C 200 TJ = 25°C 150 TJ = −40°C 100 50 200 150 100 50 0 2.5 3 3.5 4 VI − Input Voltage − V 4.
PAGE 11
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 ∆ VO − Change in Output Voltage − mV 150 VO = 1.5 V Co = 100 µF 100 50 −50 di + 0.75 A ms dt −100 −150 4 2 0 0 20 40 60 I O − Output Current − A 0 TPS75733 LINE TRANSIENT RESPONSE 100 VO = 3.3 V IO = 3 A Co = 100 µF 50 0 −50 −100 5.3 4.
PAGE 12
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 TYPICAL CHARACTERISTICS To Load IN VI OUT + EN RL Co GND ESR Figure 18.
PAGE 13
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 THERMAL INFORMATION The amount of heat that an LDO linear regulator generates is directly proportional to the amount of power it dissipates during operation. All integrated circuits have a maximum allowable junction temperature (TJmax) above which normal operation is not assured.
PAGE 14
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 THERMAL INFORMATION Equation 2 summarizes the computation: T J ǒ Ǔ ) R ) R + T ) P Dmax x R A θJC θCS θSA (2) The RθJC is specific to each regulator as determined by its package, lead frame, and die size provided in the regulator’s datasheet. The RθSA is a function of the type and size of heatsink.
PAGE 15
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 THERMAL INFORMATION TO−220 power dissipation The TO−220 package provides an effective means of managing power dissipation in through-hole applications. The TO−220 package dimensions are provided in the Mechanical Data section at the end of the data sheet.
PAGE 16
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 THERMAL INFORMATION TO−220 power dissipation (continued) 0.21 mm 0.21 mm 1 oz. Copper Power Plane 1 oz. Copper Ground Plane Figure 23 From the data in Figure 22 and rearranging equation 4, the maximum power dissipation for a different heatsink RθSA and a specific ambient temperature can be computed (see Figure 24).
PAGE 17
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 THERMAL INFORMATION TO−263 power dissipation The TO−263 package provides an effective means of managing power dissipation in surface mount applications. The TO−263 package dimensions are provided in the Mechanical Data section at the end of the data sheet.
PAGE 18
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 THERMAL INFORMATION TO−263 power dissipation (continued) 2 oz. Copper Solder Pad with 25 Thermal Vias 1 oz. Copper Power Plane 1 oz. Copper Ground Plane Thermal Vias, 0.3 mm Diameter, 1.
PAGE 19
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 APPLICATION INFORMATION programming the TPS75701 adjustable LDO regulator The output voltage of the TPS75701 adjustable regulator is programmed using an external resistor divider as shown in Figure 28. The output voltage is calculated using: V O +V ǒ1 ) R1 Ǔ R2 ref (9) Where: Vref = 1.
PAGE 20
SLVS306E − NOVEMBER 2000 − REVISED FEBRUARY 2009 APPLICATION INFORMATION input capacitor For a typical application, a ceramic input bypass capacitor (0.22 µF − 1 µF) is recommended to ensure device stability. This capacitor should be as close as possible to the input pin. Due to the impedance of the input supply, large transient currents will cause the input voltage to droop.
PAGE 21
PACKAGE OPTION ADDENDUM www.ti.
PAGE 22
PACKAGE OPTION ADDENDUM www.ti.
PAGE 23
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 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 TPS75701KTTR DDPAK/ TO-263 KTT 5 500 330.0 24.4 10.6 15.6 4.9 16.0 24.0 Q2 TPS75701KTTT DDPAK/ TO-263 KTT 5 50 330.0 24.4 10.6 15.6 4.9 16.0 24.0 Q2 TPS75715KTTR DDPAK/ TO-263 KTT 5 500 330.0 24.4 10.6 15.6 4.9 16.0 24.
PAGE 24
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS75701KTTR DDPAK/TO-263 KTT 5 500 367.0 367.0 45.0 TPS75701KTTT DDPAK/TO-263 KTT 5 50 367.0 367.0 45.0 TPS75715KTTR DDPAK/TO-263 KTT 5 500 367.0 367.0 45.0 TPS75715KTTT DDPAK/TO-263 KTT 5 50 367.0 367.0 45.0 TPS75718KTTR DDPAK/TO-263 KTT 5 500 367.0 367.0 45.
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