TEXAS INSTRUMENTS TPS75515, TPS75518, TPS75525, TPS75533 Technical data

查询TPS75501KTT供应商

TPS75515, TPS75518, TPS75525, TPS75533 WITH POWER GOOD AND

TPS75501 FAST-TRANSIENT RESPONSE 5-A LOW-DROPOUT

VOLTAGE REGULATORS

SLVS293D – NOVEMBER 2000 – REVISED MAY 2002

D 5-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 250 mV at 5 A

(TPS75533)

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

EN

IN

GND

OUTPUT

FB/PG

GND

OUTPUT

FB/PG

TO–220 (KC) PACKAGE

(TOP VIEW)

1
2
3

4
5

TO–263 (KTT) PACKAGE

(TOP VIEW)

EN

IN

1
2
3
4
5

Tab is GND

description

The TPS755xx family of 5-A low dropout (LDO) regulators contains four fixed voltage option regulators with
integrated power-good (PG
5 A of output current with a dropout of 250 mV (TPS75533). 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 TPS755xx is designed to have fast transient response for large load current changes.

DROPOUT VOLTAGE

JUNCTION TEMPERATURE

400

IO = 5 A
VO = 3.3 V

350

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

TPS75533

vs

150

100

LOAD TRANSIENT RESPONSE

VO = 1.5 V
Co = 100 µF

TPS75515

Tab is GND

300

250

200

150

– Dropout Voltage – mV

DO

V

100

50

0
–40 –25 –10 5 20 35 50 65 80 95 110 125

TJ – Junction Temperature – °C

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.

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

50

0

–50

–100

– Change in Output Voltage – mV

O

V

∆

–150

0604020 80 100 140120 160 180 200

t – Time – µs

Copyright  2001, Texas Instruments Incorporated

di
dt

+

1.25 A

µs

5

0

O

I – Output Current – A

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1

TPS75515, TPS75518, TPS75525, TPS75533 WITH POWER GOOD AND
TPS75501 FAST-TRANSIENT RESPONSE 5-A LOW-DROPOUT
VOLTAGE REGULATORS

SLVS293D – NOVEMBER 2000 – REVISED MAY 2002

description (continued)

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 250 mV
at an output current of 5 A for the TPS75533) and is directly proportional to the output current. Additionally , since
the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent of output
loading (typically 125 µA over the full range of output current). These two key specifications yield a significant
improvement in operating life for battery-powered systems.

The device is enabled when EN
applying a TTL high signal to EN
1 µA at T

= 25°C. The power-good terminal (PG) is an active low, open drain output, which can be used to

J

is connected to a low-level voltage. This LDO family also features a sleep mode;

(enable) shuts down the regulator, reducing the quiescent current to less than

implement a power-on reset or a low-battery indicator.
The TPS755xx is offered in 1.5-V, 1.8-V, 2.5-V , and 3.3-V fixed-voltage versions and in an adjustable version

(programmable over the range of 1.22 V to 5 V). Output voltage tolerance is specified as a maximum of 3% over
line, load, and temperature ranges. The TPS755xx family is available in a 5-pin TO–220 (KC) and TO–263 (KTT)
packages.

AVAILABLE OPTIONS

T

J

–40°C to 125°C

NOTE: The TPS75501 is programmable using an external resistor divider (see application

information). The KTT package is available taped and reeled. Add an R suffix to the
device type (e.g., TPS75501KTTR) to indicate tape and reel.

OUTPUT VOLTAGE

(TYP)

3.3 V TPS75533KC TPS75533KTT

2.5 V TPS75525KC TPS75525KTT

1.8 V TPS75518KC TPS75518KTT

1.5 V TPS75515KC TPS75515KTT

Adjustable 1.22 V to 5 V TPS75501KC TPS75501KTT

2

V

I

IN

TO–220 (KC) TO–263(KTT)

PG

5

PG

4

OUT

1 µF

†

See application information section for capacitor selection details.

1

EN

GND
3

+

C

47 µF

V

O

†

o

Figure 1. Typical Application Configuration (For Fixed Output Options)

2

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TPS75515, TPS75518, TPS75525, TPS75533 WITH POWER GOOD AND

TPS75501 FAST-TRANSIENT RESPONSE 5-A LOW-DROPOUT

functional block diagram—adjustable version

SLVS293D – NOVEMBER 2000 – REVISED MAY 2002

VOLTAGE REGULATORS

V

IN

V

ref

Current

UVLO

= 1.22 V

GND

EN

Thermal

Shutdown

V

IN

UVLO

Bandgap

Reference

functional block diagram—fixed version

V

IN

UVLO

GND

EN

Current

UVLO

Sense

Sense

ILIM

ILIM

SHUTDOWN

_

+

_

+

SHUTDOWN

R1

R2

R1

R2

External to
the Device

V

OUT

V

OUT

FB

Thermal

Shutdown

V

= 1.22 V

V

IN

Bandgap

Reference

ref

Falling

Edge Delay

Terminal Functions (TPS755xx)

TERMINAL

NAME NO.

EN 1 I Enable input
FB/PG 5 I Feedback input voltage for adjustable device/PG output for fixed options
GND 3 Regulator ground
IN 2 I Input voltage
OUTPUT 4 O Regulated output voltage

I/O

DESCRIPTION

PG

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3

TPS75515, TPS75518, TPS75525, TPS75533 WITH POWER GOOD AND
TPS75501 FAST-TRANSIENT RESPONSE 5-A LOW-DROPOUT
VOLTAGE REGULATORS

SLVS293D – NOVEMBER 2000 – REVISED MAY 2002

TPS755xx PG timing diagram

V

IN1

V

UVLO

V

UVLO

t

V

OUT

Threshold

Voltage

PG

Output

NOTE A: VIT –Trip voltage is typically 9% lower than the output voltage (91%VO). V

V

(see Note A)

IT+

V

(see Note A)

IT–

IT–

to V

is the hysteresis voltage.

IT+

t

t

detailed description

The TPS755xx family includes four fixed-output voltage regulators (1.5 V, 1.8 V, 2.5 V, and 3.3 V), and an
adjustable regulator, the TPS75501 (adjustable from 1.22 V to 5 V). The bandgap voltage is typically 1.22 V.

pin functions

enable (EN)

The EN
shutdown mode. When EN

power-good (PG

The PG
of V
impedance state. It will go to a high-impedance state when V
condition) of the regulated voltage. The open drain output of the PG

terminal is an input which enables or shuts down the device. If EN is a logic high, the device will be in

goes to logic low, the device will be enabled.

)

terminal for the fixed voltage option devices is an open drain, active low output that indicates the status

(output of the LDO). When V

O

reaches approximately 91% of the regulated voltage, PG will go to a low

O

falls below approximately 89% (i.e. over load

O

terminal requires a pullup resistor.

feedback (FB)

FB is an input terminal used for the adjustable-output option and must be connected to the output terminal either
directly, in order to generate the minimum output voltage of 1.22 V, or through an external feedback resistor
divider for other output voltages. The FB connection should be as short as possible. It is essential to route it in
such a way to minimize/avoid noise pickup. Adding RC networks between FB terminal and V

to filter noise is

O

not recommended because it may cause the regulator to oscillate.

4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS75515, TPS75518, TPS75525, TPS75533 WITH POWER GOOD AND

detailed description (continued)

input voltage (IN)

TPS75501 FAST-TRANSIENT RESPONSE 5-A LOW-DROPOUT

VOLTAGE REGULATORS

SLVS293D – NOVEMBER 2000 – REVISED MAY 2002

The V

terminal is an input to the regulator.

IN

output voltage (OUTPUT)

The V

OUTPUT

terminal is an output to the regulator.

absolute maximum ratings over operating junction temperature range (unless otherwise noted)

‡

Input voltage range
Voltage range at EN
Maximum PG

voltage (fixed options only) 6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Peak output current Internally limited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous total power dissipation See Dissipation Rating Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output voltage, V
Operating junction temperature range, T
Storage temperature range, T

ESD rating, HBM 2 kV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ESD rating, CDM 500 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

‡

All voltage values are with respect to network terminal ground.

, VI –0.3 V to 6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–0.3 V to 6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(OUTPUT, FB) 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

O

–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

stg

PACKAGE

TO–220 2 58.7
TO–263 2 38.7

§

For both packages, the R
with 1 ounce internal copper plane and ground plane. There was no air flow across the
packages.

¶

R

was computed assuming a vertical, free standing TO-220 package with pins

θJA

soldered to the board. There is no heatsink attached to the package.

#

R

was computed assuming a horizontally mounted TO-263 package with pins

θJA

soldered to the board. There is no copper pad underneath the package.

–40°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

J

DISSIPATION RATING TABLE

R

(°C/W) R

θJC

values were computed using JEDEC high K board (2S2P)

θJA

θJA

(°C/W)

¶

#

§

Ĕ

recommended operating conditions

Input voltage, V
Output voltage range, V
Output current, I
Operating virtual junction temperature, T

||

To calculate the minimum input voltage for your maximum output current, use the following equation: V

||

I

O

O

J

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

I(min)

MIN MAX UNIT

2.8 5.5 V

1.22 5 V
0 5 A

–40 125

= V

O(max)

+ V

DO(max load)

°C

.

5

TPS75515, TPS75518, TPS75525, TPS75533 WITH POWER GOOD AND

Adj

V

TPS75501 FAST-TRANSIENT RESPONSE 5-A LOW-DROPOUT
VOLTAGE REGULATORS

SLVS293D – NOVEMBER 2000 – REVISED MAY 2002

electrical characteristics over recommended operating junction temperature range (TJ = –40°C to
125°C), V

Output voltage (see Note 2)

Quiescent current (GND current) (see Notes 2 and 3)

Output voltage line regulation (∆VO/VO) (see Note 3)
Load regulation (see Note 2) 0.35 %/V

Output noise voltage TPS75515 BW = 300 Hz to 50 kHz, TJ = 25°C, VI = 2.8 V 35 µVrms
Output current limit VO = 0 V 5.5 10 14 A
Thermal shutdown junction temperature 150 °C

Standby current
FB input current TPS75501 FB = 1.5 V –1 1 µA
Power supply ripple rejection TPS75515
Minimum input voltage for valid PG I

PG trip threshold voltage Fixed options only VO decreasing 89 93 %V
PG hysteresis voltage Fixed options only Measured at V
PG output low voltage Fixed options only VI = 2.8 V, I
PG leakage current Fixed options only V

NOTES: 1. The adjustable option operates with a 2% tolerance over TJ = 0 to 125 °C.

= V

I

O(typ)

2. IO = 1 mA to 5 A

3. If V

≤ 2.5 V then V

O

+ 1 V, IO = 1 mA, EN = 0 V, CO = 100 µF (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

1.22 V ≤ VO ≤ 5.5 V, TJ = 25°C V

ustable voltage

1.5 V Output

1.8 V Output

2.5 V Output

3.3 V Output

= 2.8 V, V

Imin

Imax

1.22 V ≤ VO ≤ 5.5 V 0.97 V

1.22 V ≤ VO ≤ 5.5 V, TJ = 0 to 125°C
(see Note 1)

TJ = 25°C, 2.8 V < VI < 5.5 V 1.5

2.8 V ≤ VI ≤ 5.5 V 1.455 1.545
TJ = 25°C, 2.8 V < VI < 5.5 V 1.8

2.8 V ≤ VI ≤ 5.5 V 1.746 1.854
TJ = 25°C, 3.5 V < VI < 5.5 V 2.5

3.5 V ≤ VI ≤ 5.5 V 2.425 2.575
TJ = 25°C, 4.3 V < VI < 5.5 V 3.3

4.3 V ≤ VI ≤ 5.5 V 3.201 3.399
TJ = 25°C 125

VO + 1 V ≤ VI ≤ 5.5 V, TJ = 25°C 0.04
VO + 1 V ≤ VI < 5.5 V 0.1

EN = VI,T
EN = V

I

f = 100 Hz, TJ = 25°C,
VI = 2.8 V, IO = 5 A

= 300 µA, V

O(PG)

= 5 V 1 µA

(PG)

= 5.5 V:

Line regulation (mV) +ǒ%ńV

0.98 V

= 25°C 0.1 µA

J

≤ 0.8 V 0 V

(PG)

O

= 1 mA 0.15 0.4 V

O(PG)

ǒ

V

V

* 2.8 V

Imax

O

Ǔ

100

Ǔ

1000

O

O
O

60 dB

0.5 %V

1.03 V

1.02 V

O
O

200

10 µA

µA

%/V

V

V

V

O
O

If VO > 2.5 V then V

6

= VO + 1 V, V

Imin

Imax

= 5.5 V:

Line regulation (mV) +ǒ%ńV

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ǒ

V

V

Imax

O

Ǔ

ǒ

*

VO) 1V

100

Ǔ

Ǔ

1000

TPS75515, TPS75518, TPS75525, TPS75533 WITH POWER GOOD AND

V

O

TPS75501 FAST-TRANSIENT RESPONSE 5-A LOW-DROPOUT

VOLTAGE REGULATORS

SLVS293D – NOVEMBER 2000 – REVISED MAY 2002

electrical characteristics over recommended operating junction temperature range (TJ = –40°C to
125°C), V

Input current (EN)
High level EN input voltage 2 V

Low level EN input voltage 0.7 V

V

O

V

I

NOTE 4: IN voltage equals VO(typ) – 100 mV; TPS75515, TPS75518, and TPS75525 dropout voltage limited by input voltage range limitations

= V

I

O(typ)

Dropout voltage, (3.3 V output) (see Note 4)
Discharge transistor current VO = 1.5 V, TJ = 25°C 10 25 mA

UVLO TJ = 25°C, VI rising 2.2 2.75 V
UVLO hysteresis TJ = 25°C, VI falling 100 mV

(i.e., TPS75533 input voltage is set to 3.2 V for the purpose of this test).

+ 1 V, IO = 1 mA, EN = 0 V, CO = 100 µF (unless otherwise noted) (continued)

PARAMETER TEST CONDITIONS

EN = V

I

EN = 0 V –1 0 1 µA

IO = 5 A, VI = 3.2 V, TJ = 25°C 250
IO = 5 A, VI = 3.2 V 500

MIN TYP MAX UNIT

–1 1 µA

TYPICAL CHARACTERISTICS

mV

Table of Graphs

FIGURE

V

O

z

o

V

DO

V

I

V

O

Output voltage
Ground current vs Junction temperature 6

Power supply ripple rejection vs Frequency 7
Output spectral noise density vs Frequency 8
Output impedance vs Frequency 9

Dropout voltage
Minimum required input voltage vs Output voltage 12

Line transient response 13, 15
Load transient response 14, 16
Output voltage and enable voltage vs Time (start-up) 17
Equivalent series resistance vs Output current 19, 20

vs Output current 2, 3
vs Junction temperature

vs Input voltage 10
vs Junction temperature

4, 5

11

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7

TPS75515, TPS75518, TPS75525, TPS75533 WITH POWER GOOD AND
TPS75501 FAST-TRANSIENT RESPONSE 5-A LOW-DROPOUT
VOLTAGE REGULATORS

SLVS293D – NOVEMBER 2000 – REVISED MAY 2002

TYPICAL CHARACTERISTICS

– Output Voltage – V

O

V

3.345

3.330

3.315

3.3

3.285

3.270

3.255

VI = 4.3 V
TJ = 25°C

0

TPS75533

OUTPUT VOLTAGE

TPS75515

OUTPUT VOLTAGE

vs

OUTPUT CURRENT

1.545

1.530

1.515

1.485

– Output Voltage – V

O

V

1.470

15

24

IO – Output Current – A

3

1.455

VI = 2.8 V
TJ = 25°C

1.5

0

Figure 2

OUTPUT CURRENT

152

IO – Output Current – A

Figure 3

vs

34

TPS75533

OUTPUT VOLTAGE

vs

JUNCTION TEMPERATURE

3.345
VI = 4.3 V

3.33

3.315

3.3

3.285

– Output Voltage – V

O

V

3.270

3.255

–40 –25 10 35 50 65 11095

5 125

20 80

TJ – Junction Temperature – °C

Figure 4

TPS75515

OUTPUT VOLTAGE

vs

JUNCTION TEMPERATURE

1.545
VI = 2.8 V

1.530

1.515

1.5

1.485

– Output Voltage – V

O

V

1.470

1.455

–40 20 11035 95–25 –10 5 50 65 80 125

TJ – Junction Temperature – °C

Figure 5

8

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS75515, TPS75518, TPS75525, TPS75533 WITH POWER GOOD AND

TPS75501 FAST-TRANSIENT RESPONSE 5-A LOW-DROPOUT

VOLTAGE REGULATORS

SLVS293D – NOVEMBER 2000 – REVISED MAY 2002

TYPICAL CHARACTERISTICS

TPS755xx

GROUND CURRENT

vs

JUNCTION TEMPERATURE

150

VI = 5 V
IO = 5 A

125

100

Ground Current – Aµ

75

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

TJ – Junction Temperature – °C

Figure 6

PSRR – Power Supply Ripple Rejection – dB

TPS75733

POWER SUPPLY RIPPLE REJECTION

vs

FREQUENCY

90

VI = 4.3 V

80

Co = 100 µF
TJ = 25°C

70

60
50
40

30

20

10

0

IO = 5 A

1k10010
f – Frequency – Hz

100k10k

Figure 7

IO = 1 mA

1M

10M

TPS75533

OUTPUT SPECTRAL NOISE DENSITY

vs

FREQUENCY

2.5

V/ HzOutput Spectral Noise Density – µ

2

IO = 5 A

1.5

IO = 1 mA

1

0.5

0

1010 100 1k 10k 100k

f – Frequency – Hz

VI = 4.3 V
VO = 3.3 V
Co = 100 µF
TJ = 25°C

Figure 8

TPS75533

OUTPUT IMPEDANCE

vs

FREQUENCY

100

VI = 4.3 V
Co = 100 µF
TJ = 25°C

10

Ω

1

0.1

– Output Impedance –z

o

0.01

0.001
10 100 100k 1M

IO = 1 mA

10k1k 10M

f – Frequency – Hz

Figure 9

IO = 5 A

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

9