Texas Instruments TPS 61058 INSTALLATION INSTRUCTIONS

(3,25 mm x 3,25 mm)

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C

IN

L1

V

IN

22 µF

4.7 µH

2.7 V . . 5.5 V

GND

TPS61058

GND

PVIN

EN

VIN

SW VOUT

FB

PGND

C1, C2, C3

x3

D1

C3

Rs

R2

R1

IOK

R3

R4

FLASH ON (0/1.8 V)

22 µF

39 kΩ

22 kΩ

56 kΩ

1.5 Ω

62 kΩ

1 nF
(COG)

R5

5.6 kΩ

0

10

20

30

40

50

60

70

80

90

100

2.70 3.10 3.50 3.90 4.30 4.70 5.10 5.50

V - Input Voltage - V

I

LED Power Efficiency (P /P ) - %

LED IN

I = 500 mA @ V = 3.7 V

LED F

SYNCHRONOUS BOOST CONVERTER WITH DOWN MODE

HIGH POWER WHITE LED DRIVER

FEATURES DESCRIPTION

• 80% Efficient Synchronous Boost Converter

– 500-mA LED Current From 3.3-V Input

(TPS61058)

– 800-mA LED Current From 3.3-V Input

(TPS61059)

• Input Voltage Range: 2.7 V to 5.5 V

• Fixed Frequency 650 kHz (Typ) Operation

• LED Disconnect During Shutdown

• Open/Shorted LED Protection

• Over-Temperature Protection

• Low Shutdown Current: 100 nA (Typ)

• Total Solution Of Less Than 80 mm

• Small 3mm x 3mm QFN-10 Package

APPLICATIONS

• Torch/Camera White LED Supply for Cell

Phones, Smart-Phones and PDAs

TPS61058
TPS61059

SLVS572B – APRIL 2005 – REVISED DECEMBER 2005

The TPS61058/9 devices are fixed frequency,
synchronous boost dc-dc converters with an
integrated down conversion mode. The devices are
optimized for driving high power single cell white
LEDs up to 800 mA from a 2.7-V to 5.5-V input. The
LED current can be programmed to different levels
(e.g. torch, flashlight) by a set of external resistors.

The boost converter is based on a 650 kHz fixed
frequency, pulse-width-modulation (PWM) controller
using a synchronous rectifier to obtain maximum
efficiency. The maximum peak current in the boost
switch is limited to 1000 mA (TPS61058) and 1500

2

mA (TPS61059).
The converter can be disabled to maximize battery

life. In the shutdown mode, the load is completely
disconnected and the current consumption is reduced
to less than 1 µA. Built-in precharge and soft-start
circuitry prevents excessive inrush current during
start-up.

The device is packaged in a 10-pin QFN
PowerPAD™ package measuring 3 mm x 3 mm
(DRC).

Figure 1. 500 mA Flashlight Application

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.

PowerPAD is a trademark of Texas Instruments.

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.

Figure 2. Flashlight Efficiency vs V

Copyright © 2005, Texas Instruments Incorporated

IN

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TPS61058
TPS61059

SLVS572B – APRIL 2005 – REVISED DECEMBER 2005

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.

AVAILABLE OPTIONS

T

A

-40 ° C to 85 ° C 10-Pin QFN

(1) The DRC package is available taped and reeled. Add R suffix to device type (e.g. TPS61058DRCR, TPS61059DRCR) to order

quantities of 3000 devices per reel.

(2) 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.

CURRENT LIMIT PACKAGE MARKING PACKAGE PART NUMBER

1000 mA BNF TPS61058DRC
1500 mA BNG TPS61059DRC

ABSOLUTE MAXIMUM RATINGS

over operating free-air temperature range (unless otherwise noted)

Input voltage range on PVIN, VIN, EN, FB, IOK, SW, VOUT -0.3 V to 7 V
Power dissipation Internally limited
Operation temperature range, T
Maximum operating junction temperature, TJ(max) 150 ° C
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.

A

stg

(1)

TPS61058/9

-40 ° C to 85 ° C

-65 ° C to 150 ° C

(1) (2)

DISSIPATION RATINGS TABLE

PACKAGE

DRC 48.7 ° C/W 2040 mW 21 mW/ ° C

THERMAL RESISTANCE POWER RATING DERATING FACTOR ABOVE

Θ

JA

TA≤ 25 ° C TA= 25 ° C

2

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SLVS572B – APRIL 2005 – REVISED DECEMBER 2005

ELECTRICAL CHARACTERISTICS

V

= 3.6 V, I

IN

otherwise noted)

DC/DC STAGE

V

IN

V

OUT

V

OVP

V

FB

f Oscillator frequency 550 650 750 kHz
I

SW

r

DS(on)

I

Q

I

(SD)

CONTROL STAGE

V

(IL)

V

(IH)

I

(I)

= 500 mA, EN = VIN, L = 4.7 µH, C

LED

= 3x 22 µF, TA= –40 ° C to 85 ° C, typical values are at TA= 25 ° C (unless

O

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

Input voltage range VO> 2.0 V @ I

= 50 mA 2.7 5.5 V

LED

TPS61058/9 output voltage range 2.5 5.5 V
Output overvoltage protection 5.9 6.1 6.3 V
TPS61058/9 feedback voltage 490 500 510 mV

Switch current limit (TPS61058) VO= 3.3 V 900 1100 1300 mA
Switch current limit (TPS61059) VO= 3.3 V 1200 1500 1800 mA
Pre-charge current VO= 2.5 V, TA= -10 ° C to 85 ° C 84 mA
SWN switch on resistance VO= 3.3V 260 m Ω
SWP switch on resistance VO= 3.3 V 290 m Ω
Total accuracy (including line and load regulation) -3% 3%

I

= 0 mA, VO= 5.0 V,

Quiescent current 5.5 mA

LED

Device switching at 650 kHz

Shutdown current EN = GND, TA= 25 ° C 0.1 1 µA

IOK switch on-resistance VO= 5.0 V, I

= 100 µA 0.6 0.8 1 k Ω

IOK

IOK output low current 100 300 µA
IOK output leakage current V

= 7 V 0.01 0.1 µA

IOK

EN low-level input voltage 0.4 V
EN high-level input voltage 1.4 V
EN input leakage current Input tied to GND 0.01 0.1 µA
EN pull-down resistance 400 k Ω
Overtemperature protection 140 ° C
Overtemperature hysteresis 20 ° C

TPS61058
TPS61059

3

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FB

IOK

GND

PVIN

SW

VOUT

GND

VIN

EN

PGND

DRC Package

(TOP VIEW)

TPS61058
TPS61059

SLVS572B – APRIL 2005 – REVISED DECEMBER 2005

PIN ASSIGNMENTS

Terminal Functions

TERMINAL

NAME NO.

EN 1 I This is the enable pin of the device. Connect this pin to ground forces the device into shutdown mode. Pulling

VOUT 2 O This is the output of the dc-dc converter.
FB 3 I This is the feedback pin of the device. The feedback pin measures the LED current through the sense

IOK 4 O This pin indicates that the dc-dc converter is ready for high current operation (open drain output).
GND 5, 7 Control / logic ground.
PVIN 6 I This is the input voltage pin of the device. Connect directly to the input bypass capacitor.
VIN 8 I This pin needs to be tied to the input voltage pin of the device.
SW 9 I This is the switching pin of the converter.
PGND 10 Power ground.
PowerPAD™ Must be soldered to achieve appropriate power dissipation. Should be connected to PGND.

I/O DESCRIPTION

this pin above 1.4V enables the device. This pin has an internal pull-down resistor.

resistor. The feedback voltage is set internally to 500mV.

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Vmax

control

Gate

Control

Regulator Error-

Amplifier

Vref

Oscillator

PGND

PVIN

SW

VOUT

FB

GND

EN

PGND

GND

VIN

OVP

Vref

EN

Control Logic

PGND

20 pF

Temperature

Control

10 kW

IOK

400 kW

FUNCTIONAL BLOCK DIAGRAM (TPS61058/9)

TPS61058
TPS61059

SLVS572B – APRIL 2005 – REVISED DECEMBER 2005

5

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C

IN

L1

V

IN

22 Fm

4.7 Fm

2.7 V . . 5.5 V

GND

TPS61058/9

GND

PVIN

EN

VIN

SW VOUT

FB

PGND

C1, C2, C3

x3

D1

C3

Rs

R2

R1

IOK

R3

R4

TORCH ON (0/1.8 V)

22 Fm

22 kW

1 nF (COG)

R6

R5

FLASH (0 . .2 V)

500 mA Flashlight Application

Rs = 1.3

R2 = 56 k
R3 = 100 k
R4 = 2.4 k
R5 = 6.2 k
R6 = 91 k

W

W

W
W
W

W

700 mA Flashlight Application

Rs = 1.2

R2 = 47 k
R3 = 51 k
R4 = 3.3 k
R5 = 4.3 k
R6 = 120 k

W

W
W

W
W

W

List of Components:

L1 = TDK VLF5014AT-4R7T

C1,C2,C3 = TDK C2012X5R0J226MTJ

C4

(Optional)

C4 = 100 nF

TPS61058
TPS61059

SLVS572B – APRIL 2005 – REVISED DECEMBER 2005

PARAMETER MEASUREMENT INFORMATION

TYPICAL CHARACTERISTICS

Table of Graphs

FIGURE

(TPS61058) LED Power Efficiency vs. Input Voltage 3
(TPS61059) LED Power Efficiency vs. Input Voltage 4
(TPS61058) LED Power Efficiency vs LED Current 5
(TPS61058) DC Input Current vs. Input Voltage 6
(TPS61058) LED Current vs. Input Voltage 7
Oscillator Frequency 8
(TPS61059) Current Limit vs. Temperature 9
Waveforms Switching Waveforms in Boost Mode (TPS61058) 10

Switching Waveforms in Down-Mode (TPS61058) 11
High Current Flashlight Pulse Waveform (TPS61058) 12
Torch to Flashlight Transistion (TPS61058) 13
Start-Up After Enable (TPS61058) 14
Overvoltage Protection (TPS61058) 15
Duty Cycle Jitter (TPS61058) 16

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0

10

20

30

40

50

60

70

80

90

100

2.70 3.10 3.50 3.90 4.30 4.70 5.10 5.50

LEDPowerEfficiency(P /P )-%

LED IN

I = 500 mA @ V = 3.7 V

LED F

I = 150 mA @ V = 3.4 V

LED F

V - Input Voltage - V

I

0

10

20

30

40

50

60

70

80

90

100

2.70 3.10 3.50 3.90 4.30 4.70 5.50
VI − Input Voltage − V

LED Power Efficiency (P

LED

/P

IN

) − %

I

LED

= 700 mA @ VF = 3.4 V

I

LED

= 150 mA @ VF = 3.0 V

5.10

0

200

400

600

800

1000

1200

1400

2.70 3.10 3.50 3.90 4.30 4.70 5.10 5.50

Input DC Current - mA

V - Input Voltage - V

I

I = 500 mA

LED

0

10

20

30

40

50

60

70

80

90

100

100 150 200 250 300 350 400 450 500

LED Current - mA

LED Power Efficiency (P /P ) - %

LED IN

V = 3.3 V

IN

V = 4.2 V

IN

V = 3.6 V

IN

TPS61058
TPS61059

SLVS572B – APRIL 2005 – REVISED DECEMBER 2005

LED POWER EFFICIENCY LED POWER EFFICIENCY

TPS61058 TPS61059

vs vs

INPUT VOLTAGE INPUT VOLTAGE

Figure 3. Figure 4.

TPS61058 TPS61058

EFFICIENCY DC INPUT CURRENT

vs vs

LED CURRENT INPUT VOLTAGE

Figure 5. Figure 6.

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0

100

200

300

400

500

600

2.70 3.10 3.50 3.90 4.30 4.70 5.10 5.50

LED Current - mA

I = 500 mA

LED

I = 150 mA

LED

V - Input Voltage - V

I

0

2

4

6

8

10

12

14

16

606

615

622

629

636

643

650

657

664

672

f − Oscillator Frequency − kHz

Percent of Units − %

TA = 25C

Switch Current Limit − Am

Ambient Temperature − C

1250

1350

1450

1550

1650

1750

-40 -30 -20 -10 0 10 20 30 40 50 60 70 80

SW (2 V/div)

V = 3.6 V, I = 500 mA

I LED

I (200 mA/div)

L

V (10 mV/div - 3.8 V OFFSET)

OUT

I (200 mA/div)

LED

t - Time - 500 ns/div

TPS61058
TPS61059

SLVS572B – APRIL 2005 – REVISED DECEMBER 2005

TPS61058 OSCILLATOR FREQUENCY

LED CURRENT

vs

INPUT VOLTAGE

Figure 7. Figure 8.

TPS61059 TPS61058

CURRENT LIMIT SWITCHING WAVEFORMS IN BOOST MODE

TEMPERATURE

Figure 9. Figure 10.

8

vs

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SW

(2 V/div)

I (200 mA/div)

L

I (200mA/div)

LED

V

(10 mV/div - 3.8 V OFFSET)

OUT

V = 4.5 V, I = 500 mA

I LED

t - Time - 500 ns/div

EN (1 V/div)

t - Time - 5 ms/div

I (200 mA/div)

L

V (1 V/div)

OUT

I (200 mA/div)

LED

V = 3.6 V

I

V (1 V/div)

OUT

I (200 mA/div)

LED

I (500 mA/div)

L

t - Time - 50 s/divm

EN (1 V/div)

V (1 V/div)

OUT

I (50 mA/div)

LED

I (100 mA/div)

L

t - Time - 200 s/divm

TPS61058
TPS61059

SLVS572B – APRIL 2005 – REVISED DECEMBER 2005

SWITCHING WAVEFORMS IN DOWN MODE HIGH CURRENT FLASHLIGHT PULSE WAVEFORM

TPS61058 TPS61058

Figure 11. Figure 12.

TPS61058 TPS61058

TORCH TO FLASHLIGHT TRANSISTION START-UP AFTER ENABLE

Figure 13. Figure 14.

9