TEXAS INSTRUMENTS TPS786xx Technical data

www.ti.com

1

2 3 4 5

6 GND

DCQ PACKAGE

SOT223-6

(TOP VIEW)

NR/FB

OUT

GND

IN

EN

1

KTT PACKAGE

DDPAK-5

(TOP VIEW)

2 3

4 5

EN

IN

GND

OUT

0

10

20

30

40

50

60

70

80

Frequency (Hz)

1 10k 10M1k

Ripple Rejection − (dB)

I

OUT

= 1 mA

TPS78630

RIPPLE REJECTION

vs

FREQUENCY

I

OUT

= 1.5 A

VIN = 4 V C

OUT

= 10 µF

CNR = 0.01 µF

10 100 100k 1M

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

Frequency (Hz)

100 10k 100k1k

Output Spectral Noise Density − (µV/ Hz)

I

OUT

= 1 mA

TPS78630

OUTPUT SPECTRAL NOISE DENSITY

vs

FREQUENCY

I

OUT

= 1.5 A

VIN = 5.5 V C

OUT

= 2.2 µF

CNR = 0.1 µF

NR/FB

TAB GND

查询TPS78618供应商

ULTRALOW-NOISE, HIGH-PSRR, FAST, RF, 1.5-A

LOW-DROPOUT LINEAR REGULATORS

FEATURES DESCRIPTION

• 1.5-A Low-Dropout Regulator With Enable

• Available in Fixed and Adjustable (1.2-V to

5.5-V) Output Versions

• High PSRR (49 dB at 10 kHz)

• Ultralow Noise (48 µ V

• Fast Start-Up Time (50 µs)

• Stable With a 1- µ F Ceramic Capacitor

• Excellent Load/Line Transient Response

• Very Low Dropout Voltage (390 mV at Full

Load, TPS78630)

• 6-Pin SOT223 and 5-Pin DDPAK Package

APPLICATIONS

• RF: VCOs, Receivers, ADCs

• Audio

• Bluetooth

• Cellular and Cordless Telephones

• Handheld Organizers, PDAs

®

, Wireless LAN

, TPS78630)

RMS

TPS786xx

SLVS389F – SEPTEMBER 2002 – REVISED DECEMBER 2005

The TPS786xx family of low-dropout (LDO) low-power linear voltage regulators features high power-supply rejection ratio (PSRR), ultralow noise, fast start-up, and excellent line and load transient responses in small outline, SOT223-6 and DDPAK-5 packages. Each device in the family is stable, with a small 1- µ F ceramic capacitor on the output. The family uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (for example, 390 mV at 1.5 A). Each device achieves fast start-up times (approximately 50 µ s with a 0.001 µF bypass capacitor) while consuming very low quiescent current (265 µ A, typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than 1 µ A. The TPS78630 exhibits approximately 48 µ V voltage at 3.0 V output noise with a 0.1 µ F bypass capacitor. Applications with analog components that are noise sensitive, such as portable RF electronics, benefit from the high PSRR, low noise features, and the fast response time.

of output

RMS

Bluetooth is a registered trademark of Bluetooth SIG, Inc. All 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.

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.

www.ti.com

TPS786xx

SLVS389F – SEPTEMBER 2002 – REVISED DECEMBER 2005

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. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

ORDERING INFORMATION

PRODUCT V

TPS786 xxyyyz XX is nominal output voltage (for example, 28 = 2.8 V, 285 = 2.85 V, 01 = Adjustable).

YYY is package designator. Z is package quantity.

(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

website at www.ti.com .

(2) Output voltages from 1.3 V to 5.0 V in 100 mV increments are available; minimum order quantities may apply. Contact factory for details

and availability.

(1)

(2)

OUT

ABSOLUTE MAXIMUM RATINGS

over operating temperature (unless otherwise noted)

VINrange –0.3 V to 6 V V

range –0.3 V to VIN+ 0.3 V

EN

V

range 6 V

OUT

Peak output current Internally limited ESD rating, HBM 2 kV ESD rating, CDM 500 V Continuous total power dissipation See Dissipation Ratings table Junction temperature range, T Storage temperature range, T

(1) 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.

J

stg

(1)

VALUE

–40 ° C to +150 ° C –65 ° C to +150 ° C

PACKAGE DISSIPATION RATINGS

PACKAGE BOARD R θ

DDPAK High-K

SOT223 Low-K

(1) The JEDEC high-K (2s2p) board design used to derive this data was a 3-in x 3-in (7,5-cm x 7,5-cm), multilayer board with 1 ounce

internal power and ground planes and 2 ounce copper traces on top and bottom of the board.

(2) The JEDEC low-K (1s) board design used to derive this data was a 3-in x 3-in (7,5-cm x 7,5cm), two-layered board with 2 ounce copper

traces on top of the board.

2

(1)

(2)

JC

2 ° C/W 23 ° C/W

15 ° C/W 53 ° C/W

R θ

JA

www.ti.com

TPS786xx

SLVS389F – SEPTEMBER 2002 – REVISED DECEMBER 2005

ELECTRICAL CHARACTERISTICS

V

+ 1 V

(1)

, I

= 1 mA,

OUT

DO

(1.02)V

OUT

IN

Over recommended operating temperature range (T C

OUT

= 10 µ F, C

= 0.01 µ F, unless otherwise noted. Typical values are at +25 ° C.

NR

= –40 ° C to +125 ° C), V

J

= VIN, V

EN

= V

IN

OUT(nom)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

Input voltage, V Continuous output current I

(1)

IN

OUT

2.7 5.5 V 0 1.5 A

Output voltage range TPS78601 1.225 5.5 – V Output voltage

Accuracy

Output voltage line regulation ( ∆ V Load regulation ( ∆ V

Dropout voltage VIN= V

OUT(nom)

(3)

– 0.1 V

%/V

OUT

) 0 µ A ≤ I

%/V

OUT

TPS78601 Fixed V

IN

TPS78628 I TPS78630 I

TPS78633 I Output current limit V Ground pin current 0 µ A ≤ I Shutdown current

(4)

(2)

0 µ A ≤ I 0 µ A ≤ I

OUT

(1)

)

V

OUT

OUT OUT OUT

OUT

OUT OUT

≤ 1.5 A, V ≤ 1.5 A, V

+ 1 V ≤ VIN≤ 5.5 V

OUT

+ 1 V ≤ VIN≤ 5.5 V –2.0 +2.0 %

OUT

+ 1 V ≤ VIN≤ 5.5 V 5 12 %/V

≤ 1.5 A 7 mV

OUT

= 1.5 A 410 580 = 1.5 A 390 550 mV = 1.5 A 340 510

= 0 V 2.4 4.2 A

≤ 1.5 A 260 385 µ A

OUT

(1)

(0.98)V

OUT

VEN= 0 V, 2.7 V ≤ VIN≤ 5.5 V 0.07 1 µ A

FB pin current VFB= 1.225 V 1 µ A

f = 100 Hz, I

Power-supply ripple rejection TPS78630 dB

f = 100 Hz, I f = 10 kHz, I f = 100 kHz, I

= 10 mA 59

OUT

= 1.5 A 52

OUT

= 1.5 A 49

OUT

= 1.5 A 32

OUT

CNR= 0.001 µ F 66

Output noise voltage (TPS78630) µ V

BW = 100 Hz to 100 kHz, I

= 1.5 A

OUT

CNR= 0.0047 µ F 51 CNR= 0.01 µ F 49 CNR= 0.1 µ F 48 CNR= 0.001 µ F 50

Time, start-up (TPS78630) RL= 2 Ω , C

= 1 µ F CNR= 0.0047 µ F 75

OUT

CNR= 0.01 µ F 110 High-level enable input voltage 2.7 V ≤ VIN≤ 5.5 V 1.7 V Low-level enable input voltage 2.7 V ≤ VIN≤ 5.5 V 0 0.7 V EN pin current VEN= 0 –1 1 µ A UVLO threshold VCCrising 2.25 2.65 V UVLO hysteresis 100 mV

V V

RMS

µ s

V

(1) Minimum VIN= V (2) Tolerance of external resistors not included in this specification.

+ V

OUT

or 2.7 V, whichever is greater.

DO

(3) Dropout is not measured for TPS78618 or TPS78625 since minimum VIN= 2.7 V. (4) For adjustable version, this applies only after VINis applied; then V

transitions high to low.

EN

3

www.ti.com

Current

Sense

Thermal

Shutdown

UVLO

R

1

FB

R

2

External to the Device

Overshoot

Detect

250 k

Ω

Quickstart

Bandgap

Reference

1.225 V

IN

V

IN

EN

GND

OUT

300

Ω

V

REF

ILIM SHUTDOWN

Current

Sense

Thermal

Shutdown

UVLO

R

1

R

2

R2= 40 k

Ω

Overshoot

Detect

250 k

Ω

Quickstart

Bandgap

Reference

1.225 V

IN

V

IN

EN

GND

NR

OUT

300

Ω

V

REF

ILIM SHUTDOWN

TPS786xx

SLVS389F – SEPTEMBER 2002 – REVISED DECEMBER 2005

FUNCTIONAL BLOCK DIAGRAM—ADJUSTABLE VERSION

FUNCTIONAL BLOCK DIAGRAM—FIXED VERSION

TERMINAL

NAME (SOT223) (DDPAK) DESCRIPTION

DCQ KTT

NR 5 5

EN 1 1

Noise-reduction pin for fixed versions only. An external bypass capacitor, connected to this terminal, in conjunction with an internal resistor, creates a low-pass filter to further reduce regulator noise.

The EN terminal is an input that enables or shuts down the device. When EN goes to a logic high, the device will be enabled. When the device goes to a logic low, the device is in shutdown mode.

Terminal Functions

FB 5 5 Feedback input voltage for the adjustable device.

GND 3, 6 3, TAB Regulator ground

IN 2 2 Input supply

OUT 4 4 Regulator output

4

www.ti.com

2.95

2.96

2.97

2.98

2.99

3.00

3.01

3.02

3.03

3.04

3.05

0.0 0.3 0.6 0.9 1.2 1.5

V

OUT

(V)

I

OUT

(A)

VIN = 4 V C

OUT

= 10 µF

TJ = 25°C

0

1

2

3

4

5

−40−25−10 5 20 35 50 65 80 95 110 125

V

OUT

(V)

TJ (°C)

I

OUT

= 1 mA

2.798

2.794

2.790

2.782

2.778

I

OUT

= 1.5 A

VIN = 3.8 V C

OUT

= 10 µF

2.786

290

300

310

320

330

340

350

−40−25−10 5 20 35 50 65 80 95 110 125

I

GND

(µA)

TJ (°C)

VIN = 3.8 V C

OUT

= 10 µF

I

OUT

= 1 mA

I

OUT

= 1.5 A

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

Frequency (Hz)

100 10k 100k1k

Output Spectral Noise Density (µV/Hz)

I

OUT

= 1 mA

I

OUT

= 1.5 A

VIN = 5.5 V C

OUT

= 2.2 µF

CNR = 0.1 µF

0.0

0.1

0.2

0.3

0.4

0.5

0.6

Frequency (Hz)

100 10k 100k1k

Output Spectral Noise Density (µV/Hz)

I

OUT

= 1 mA

I

OUT

= 1.5 A

VIN = 5.5 V C

OUT

= 10 µF

CNR = 0.1 µF

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Frequency (Hz)

100 10k 100k1k

Output Spectral Noise Density − (µV/Hz)

VIN = 5.5 V C

OUT

= 10 µF

I

OUT

= 1.5 A

CNR = 0.1 µF

CNR = 0.01 µF

CNR = 0.0047 µF

CNR = 0.001 µF

0

10

20

30

40

50

60

70

80

RMS Output Noise (µV

RMS

)

C

NR

(µF)

I

OUT

= 1.5 A

C

OUT

= 10 µF

BW = 100 Hz to 100 kHz

0.001 µF 0.01 µF 0.1 µF0.0047 µF

0

10

20

30

40

50

60

70

80

f (Hz)

1 10k 10M1k

Ripple Rejection − (dB)

I

OUT

= 1 mA

I

OUT

= 1.5 A

VIN = 4 V C

OUT

= 10 µF

CNR = 0.01 µF

10 100 100k 1M

0

100

200

300

400

500

600

−40−25−10 5 20 35 50 65 80 95 110125

V

DO

(mV)

TJ (°C)

VIN = 2.7 V C

OUT

= 10 µF

I

OUT

= 1.5 A

SLVS389F – SEPTEMBER 2002 – REVISED DECEMBER 2005

TYPICAL CHARACTERISTICS

TPS78630 TPS78628 TPS78628

OUTPUT VOLTAGE OUTPUT VOLTAGE GROUND CURRENT

vs OUTPUT CURRENT vs JUNCTION TEMPERATURE vs JUNCTION TEMPERATURE

Figure 1. Figure 2. Figure 3.

TPS786xx

TPS78630 TPS78630 TPS78630

OUTPUT SPECTRAL OUTPUT SPECTRAL OUTPUT SPECTRAL

NOISE DENSITY NOISE DENSITY NOISE DENSITY vs FREQUENCY vs FREQUENCY vs FREQUENCY

Figure 4. Figure 5. Figure 6.

TPS78630 TPS78628 TPS78630

ROOT MEAN SQUARED DROPOUT VOLTAGE RIPPLE REJECTION

OUTPUT NOISE vs JUNCTION TEMPERATURE vs FREQUENCY

vs BYPASS CAPACITANCE

Figure 7. Figure 8. Figure 9.

5

www.ti.com

0

10

20

30

40

50

60

70

80

f (Hz)

1 10k 10M1k

Ripple Rejection (dB)

I

OUT

= 1 mA

I

OUT

= 1.5 A

VIN = 4 V C

OUT

= 10 µF

CNR = 0.1 µF

10 100 100k 1M

0

10

20

30

40

50

60

70

80

f (Hz)

1 10k 10M1k

Ripple Rejection (dB)

I

OUT

= 1 mA

I

OUT

= 1.5 A

VIN = 4 V C

OUT

= 2.2 µF

CNR = 0.01 µF

10 100 100k 1M

0

10

20

30

40

50

60

70

80

f (Hz)

1 10k 10M1k

Ripple Rejection (dB)

I

OUT

= 1 mA

I

OUT

= 1.5 A

VIN = 4 V C

OUT

= 2.2 µF

CNR = 0.1 µF

10 100 100k 1M

5

4

2

−30

−60

3

0

30

60

V

IN

(V)

t (µs)

6040200 80 100 120 140 160 180 200

I

OUT

= 1.5 A

C

OUT

= 10 µF

CNR = 0.01 µF

dv

dt



1 V

s

∆V

OUT

(mV)

t (µs)

6

5

3

−40

−80

4

0

40

80

6040200 80 100 120 140 160 180 200

I

OUT

= 1.5 A

C

OUT

= 10 µF

CNR = 0.01 µF

dv

dt



1 V

s

V

IN

(V)

∆V

OUT

(mV)

∆V

OUT

(mV)

t (µs)

2

1

−1

−75

−150

0

75

150

I

OUT

(A)

3002001000 400 500 600 700 800 900 1000

VIN = 3.8 V C

OUT

= 10 µF

CNR = 0.01 µF

di dt



1.5 A s

Time (µs)

4.0

3.5

2.5

0.5 0

3.0

1.0

1.5

2.0

V

OUT

(V)

4000 800 1200 1600 2000

V

OUT

= 2.5 V RL = 1.6 Ω CNR = 0.01 µF

V

IN

V

OUT

0

100

200

300

400

500

600

0 200 400 600 800 1000 1200 1400

V

DO

(mV)

I

OUT

(mA)

TJ = 125°C

TJ = −40°C

TJ = 25°C

0

50

100

150

200

250

300

350

400

450

500

2.5 3.0 3.5 4.0 4.5 5.0

V

DO

(mV)

VIN (V)

TJ = 125°C

TJ = −40°C

TJ = 25°C

I

OUT

= 1.5 A C

OUT

= 10 µF

CNR = 0.01 µF

TPS786xx

SLVS389F – SEPTEMBER 2002 – REVISED DECEMBER 2005

TYPICAL CHARACTERISTICS (continued)

TPS78630 TPS78630 TPS78630

RIPPLE REJECTION RIPPLE REJECTION RIPPLE REJECTION

vs FREQUENCY vs FREQUENCY vs FREQUENCY

Figure 10. Figure 11. Figure 12.

LINE TRANSIENT RESPONSE LINE TRANSIENT RESPONSE LOAD TRANSIENT RESPONSE

TPS78618 TPS78630 TPS78628

Figure 13. Figure 14. Figure 15.

TPS78625 TPS78630 TPS78601

POWER UP/ DROPOUT VOLTAGE DROPOUT VOLTAGE

POWER DOWN vs OUTPUT CURRENT vs INPUT VOLTAGE

6

Figure 16. Figure 17. Figure 18.