LT3513IUHF#TRPBF datasheet, PDF

LT3513

2MHz High Current

5-Output Regulator

for TFT-LCD Panels

FeaTures

n

DescripTion

The LT

®

3513 5-output adjustable switching regulator

provides power for large TFT-LCD panels. The 38-pin

5mm

×

7mm QFN device can generate a 3.3V or 5V logic

supply along with the triple output supply required for the

TFT-LCD panel. A lower voltage secondary logic supply

may also be generated with the addition of an external

NPN driven by the internal linear regulator. A step-down

regulator provides a low voltage output, V

LOGIC

, with up

to 1.2A of current while capable of operating from a wide

input range of 4.5V to 30V. A high power step-up con-

verter, a lower power step-up converter and an inverting

converter provide the three independent output voltages:

AV

DD

, V

ON

and V

OFF

required by the LCD panel. A high-side

PNP provides delayed turn-on of the V

ON

signal and can

handle up to 30mA. Protection circuitry ensures that V

ON

is disabled if any of the four outputs are more than 10%

below the programmed voltage.

L,

LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

PanelProtect, True Color PWM and ThinSOT are trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

n

4.5V to 30V Input Voltage Range

Four Integrated Switches: 2.2A Buck, 1.5A Boost,

0.25A Boost, 0.25A Inverter (Guaranteed Minimum

Current Limit)

External NPN LDO Driver

Fixed Frequency, Low Noise Outputs

Inductor Current Sense for Buck

Soft-Start for All Outputs

Externally Programmable V

ON

Delay

Three Integrated Schottky Diodes

PGOOD

Pin for AV

DD

Output Disconnect

PanelProtect™ Circuitry Disables V

ON

Upon Fault

Thermally Enhanced 38-Lead 5mm

×

7mm QFN

Package

applicaTions

n

Automotive TFT-LCD Displays

Large TFT-LCD Desktop Monitors

Flat Panel Televisions

Typical applicaTion

V

IN

8V TO 16V

V

OFF

–10V

20mA

2.2µF

69.8k

10k

4.7µH

0.22µF

SW1

SENSE

+

SENSE

–

FB1

LT3513

V

ON_CLK

V

ON

V

ONSINK

E3

6.8µH

V

LDO

3.3V

0.5A

10µF

10k

BD

FB5

42.2k

V

C1

7.5k

2.7nF

V

C2

4.7k

GND

V

C3

30k

SW3

FB3

V

C4

13k

2.2nF

3513 TA01a

0.47µF

10µF 178k

60.4k

V

LOGIC

5V

10µH

53.6k

10k

100k

10µF

AV

DD

8V

80mA

10µH

UVLO LDOPWR V

IN

SW4

D4

NFB4

BIAS

BOOST

SW2

FB2

PGOOD

RUN-SS1

RUN-SS2

RUN-SS3/4

C

T

Start-Up Waveforms

RUN/SS 2V/DIV

V

LOGIC

5V/DIV

AV

DD

10V/DIV

V

OFF

10V/DIV

V

LOGIC

5V

0.5A

47nF

V

ON_CLK

232k

15nF

V

ON

22V

20mA

30.1k

22µF

10k

V

E3

20V/DIV

V

ON

20V/DIV

I

IN(AVG)

1A/DIV

165k

V

LOGIC

5V

10k

2.2µF

0.47µF

5ms/DIV

3513 TA01b

4.7nF 1.5nF

3513fc

1

LT3513

absoluTe maximum raTings

V

IN

, LDOPWR Voltage ...............................................32V

UVLO Voltage............................................................32V

SW2, SW3, SW4 Voltage ..........................................40V

E3 Pin Voltage...........................................................40V

V

ON

, V

ONSINK

Voltage ................................................40V

PGOOD

Voltage .........................................................40V

D4 Voltage ........................................................1V, –40V

BOOST Voltage .........................................................37V

BOOST Over SW1 .......................................................8V

SENSE

+

, SENSE

–

Voltage ..........................................10V

V

ON_CLK

Voltage........................................................10V

BIAS, BD Voltage ......................................................10V

C

T

Pin Voltage .............................................................5V

RUN-SS1, RUN-SS2, RUN-SS3/4 Voltage ...................5V

FB1, FB2, FB3, FB5 Voltage .........................................5V

NFB4 Voltage ......................................................5V, –5V

V

C1

, V

C2

, V

C3

, V

C4

Voltage ..........................................5V

Junction Temperature (Note 8) ............................. 125°C

Operating Temperature Range (Note 2).. –40°C to 125°C

Storage Temperature Range .................. –65°C to 125°C

(Note 1)

pin conFiguraTion

TOP VIEW

UVLO

SW1

GND

FB1

31 SENSE

+

30 SENSE

–

29 BIAS

28 BOOST

27 LDOPWR

39

26 BD

25 SW4

24 D4

23 NFB4

22 RUN-SS1

21 V

C4

20 V

C2

13 14 15 16 17 18 19

BIAS

SW2

GND

FB2

C

T

V

IN

V

IN

38 37 36 35 34 33 32

FB5 1

V

C1

2

RUN-SS3/4 3

FB3 4

RUN-SS2 5

SW3 6

E3 7

V

ON

8

V

ONSINK

9

V

ON_CLK

10

PGOOD

11

V

C3

12

UHF PACKAGE

38-LEAD (5mm

×

7mm) PLASTIC QFN

T

JMAX

= 125°C,

θ

JA

= 34°C/W,

θ

JC

= 1°C/W

EXPOSED PAD (PIN 39) IS GND, MUST BE SOLDERED TO PCB

orDer inFormaTion

LEAD FREE FINISH

LT3513EUHF#PBF

LT3513IUHF#PBF

TAPE AND REEL

LT3513EUHF#TRPBF

LT3513IUHF#TRPBF

PART MARKING*

3513

PACKAGE DESCRIPTION

38-Lead (5mm

×

7mm) Plastic QFN

38-Lead (5mm

×

7mm) Plastic QFN

TEMPERATURE RANGE

–40°C to 125°C

Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.

For more information on lead free part marking, go to:

http://www.linear.com/leadfree/

For more information on tape and reel specifications, go to:

http://www.linear.com/tapeandreel/

The

l

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at T

A

= 25°C. V

IN

= 12V, BIAS = 3V, unless otherwise noted.

PARAMETER

Minimum Input Voltage

Quiescent Current

RUN-SS1, RUN-SS2, RUN-SS3/4 Pin Current

RUN-SS1, RUN-SS2, RUN-SS3/4 Threshold

BIAS Pin Voltage to Begin RUN-SS2, RUN-SS3/4

BIAS Pin Current

BIAS = 3.1V, All Switches Off

l

elecTrical characTerisTics

CONDITIONS

MIN

l

TYP

7.5

30

2

0.8

2.25

16.5

MAX

4.5

12

65

UNITS

V

mA

µA

V

Not Switching

V

RUNSS1

= 0V

RUN-SS1= RUN-SS2 = RUN-SS3

= RUN-SS4 = 0.4V

2.7

20

V

mA

3513fc

2

LT3513

elecTrical characTerisTics

PARAMETER

FB Threshold Offset to Begin C

T

Charge

C

T

Pin Current Source

C

T

Threshold to Power V

ON

V

ON

Switch Drop

Maximum V

ON

Current

V

ON_CLK

Input Voltage High

V

ON_CLK

Input Voltage Low

V

ONSINK

Voltage On

Master Oscillator Frequency

l

The

l

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at T

A

= 25°C. V

IN

= 12V, BIAS = 3V, unless otherwise noted.

CONDITIONS

(Note 3)

All FB Pins = 1.5V, C

T

= 0.35V

All FB Pins = 1.5V

V

ON

Current = 30mA

V

E3

= 30V

l

MIN

90

16

1

30

1.5

TYP

125

20

1.1

200

50

MAX

160

25

1.2

400

UNITS

mV

µA

V

mV

mA

V

0.3

V

ONSINK

Current = 1µA

l

V

MHz

kHz

V

1.2

1.90

1.80

2

200

1.25

3.4

90

4

1

1.215

1.205

1.235

0.01

1.255

1.265

0.03

200

3.9

125

4.5

160

2.12

2.22

Foldback Switching Frequency

UVLO Pin Threshold

UVLO Pin Hysteresis Current

PGOOD

Threshold Offset

PGOOD

Sink Current

PGOOD

Pin Leakage

Switch 1 (2.2A Buck)

FB1 Voltage

FB2 = 0V, FB3 = 0V, NFB4 = 0V

UVLO Pin Voltage Rising

V

UVLO

= 1V

PGOOD

Connected to 40V Through 100k

V

PGOOD

= 40V

µA

mV

mA

µA

V

%/V

nA

V/V

µmhos

%

l

FB1 Voltage Line Regulation

FB1 Pin Bias Current

Error Amplifier 1 Voltage Gain

Error Amplifier 1 Transconductance

Maximum Duty Cycle

Switch 1 Current Limit

Switch 1 V

CESAT

Switch 1 Leakage Current

Minimum BOOST Voltage Above SW1 Pin

BOOST Pin Current

BOOST Schottky Diode Drop

Switch 2 (1.5A BOOST)

FB2 Voltage

4.5V < V

IN

< 30V

(Note 4)

ΔI

= 10µA

l

30

250

220

75

2.2

85

3

430

0.1

1.8

30

700

1.20

1.19

1.22

0.01

Duty Cycle = 35% (Note 6)

I

SW

= 1.5A

FB1 = 1.5V, RUN-SS1 = 0V

I

SW

= 1.5A (Note 7)

I

SW

= 1.5A

I = 170mA

3.5

10

2.5

50

A

mV

µA

V

mA

mV

l

1.24

1.25

0.03

200

V

%/V

nA

V/V

µmhos

FB2 Voltage Line Regulation

FB2 Pin Bias Current

Error Amplifier 2 Voltage Gain

Error Amplifier 2 Transconductance

Switch 2 Current Limit

Switch 2 V

CESAT

Switch 2 Leakage Current

BIAS Pin Current Due to SW2

Maximum Duty Cycle (SW2)

4.5V < V

IN

< 30V

(Note 5)

ΔI

= 10µA

(Note 6)

I

SW2

= 1.2A

FB2 = 1.5V, RUN-SS1 = 0V

I

SW2

= 1.2A

l

30

250

220

1.5

1.85

360

0.1

45

75

90

2.4

1

A

mV

µA

mA

%

3513fc

3

LT3513

elecTrical characTerisTics

PARAMETER

Switch 3 (250mA BOOST)

FB3 Voltage

l

The

l

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at T

A

= 25°C. V

IN

= 12V, BIAS = 3V, unless otherwise noted.

CONDITIONS

MIN

1.20

1.19

TYP

1.22

0.01

l

MAX

1.24

1.25

0.03

200

UNITS

V

%/V

nA

V/V

µmhos

FB3 Voltage Line Regulation

FB3 Pin Bias Current

Error Amplifier 3 Voltage Gain

Error Amplifier 3 Transconductance

Switch 3 Current Limit

Switch 3 V

CESAT

Switch 3 Leakage Current

BIAS Pin Current Due to SW3

Maximum Duty Cycle (SW3)

Schottky Diode Drop

Switch 4 (250mA Inverter)

NFB4 Voltage

4.5V < V

IN

< 30V

(Note 4)

ΔI

= 10µA

(Note 6)

I

SW3

= 0.2A

FB3 = 1.5V, RUN-SS1 = 0V

I

SW3

= 0.2A

l

30

250

220

0.25

0.3

200

0.1

18

84

88

900

–1.205

–1.215

–1.180

0.01

0.38

1

A

mV

µA

mA

%

mV

I = 170mA

l

–1.155

–1.145

0.03

16

V

%/V

µA

V/V

µmhos

NFB4 Voltage Line Regulation

NFB4 Pin Bias Current

Error Amplifier 4 Voltage Gain

Error Amplifier 4 Transconductance

Switch 4 Current Limit

Switch 4 V

CESAT

Switch 4 Leakage Current

BIAS Pin Current Due to SW4

Maximum Duty Cycle (SW4)

Schottky Diode Drop (D4)

NPN LDO

FB5 Voltage

4.5V < V

IN

< 30V

(Note 4)

ΔI

= 10µA

(Note 6)

I

SW4

= 0.2A

NFB4 = –1.5V, RUN-SS1 = 0V

I

SW4

= 0.2A

84

I = 170mA

0.61

0.6

6

4.5

0.25

l

5

200

220

0.3

200

0.1

18

88

700

0.625

30

8

0.40

1

A

mV

µA

mA

%

mV

l

0.63

0.65

200

10

V

nA

mA

V

FB5 Pin Bias Current

Base Drive Current

LDOPWR Minimum Voltage

(Note 4)

FB5 = 0.5V

BD = 3.5V

l

Note 1:

Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2:

The LT3513E is guaranteed to meet specified performance from

0°C to 125°C junction temperature. Specifications over the –40°C to

125°C operating junction temperature range are assured by design,

characterization and correlation with statistical process controls. The

LT3513I is guarenteed over the full –40°C to 125°C operating junction

temperature range.

Note 3:

The C

T

pin is held low until FB1, FB2, FB3 and NFB4 all ramp

above the FB threshold offset.

Note 4:

Current flows out of FB1, FB3, NFB4 and FB5.

Note 5:

Current may flow in or out of FB2. The absolute value of this test

is used.

Note 6:

Current limit is guaranteed by design and/or correlation to static

test. Slope compensation reduces current limit at higher duty cycles.

Note 7:

This is the minimum voltage across the boost capacitor needed to

guarantee full saturation of the internal power switch.

Note 8:

This IC includes overtemperature protection that is intended

to protect the device during momentary overload conditions. Junction

temperature will exceed the maximum operating junction temperature

range when overtemperature protection is active. Continuous operation

above the specified maximum operating junction temperature may impair

device reliability.

3513fc

4

LT3513

Typical perFormance characTerisTics

Maximum Output Current for

V

LOGIC

= 3.3V

2.6

2.4

2.2

I

OUT(MAX)

(A)

2.0

1.8

1.6

1.4

1.2

0

5

10

V

IN

(V)

3513 G01

T

A

= 25°C, unless otherwise noted.

SW1 Current Limit vs Duty Cycle

3.0

2.5

SW1 CURRENT LIMIT (A)

SW1 CURRENT LIMIT

vs DUTY CYCLE

8

7

6

2.0

1.5

1.0

0.5

0

MINIMUM

V

IN

(V)

5

4

3

2

1

25

35

45

55

DUTY CYCLE (%)

65

75

3513 G02

Start and Run V

LOGIC

= 3.3V

L = 4.3µH

L = 2.4µH

V

IN(MIN)

START

V

IN(MIN)

RUN

15

20

0

0.001

0.01

0.1

LOAD CURRENT (A)

1

3513 G03

BOOST Pin Current

70

60

50

40

30

20

10

0

500

1000 1500 2000 2500

SWITCH CURRENT (mA)

3000

SW CURRENT LIMIT (A)

BOOST CURRENT (mA)

2.5

2.4

SW2 Current Limit

500

450

SW CURRENT LIMIT (mA)

400

350

300

250

200

150

60

35

110

10

85

–15

AMBIENT TEMPERATURE (°C)

3513 G05

SW3 Current Limit

2.3

2.2

2.1

2.0

1.9

1.8

1.7

1.6

1.5

–40

100

–50 –30 –10 10 30 50 70 90 110

AMBIENT TEMPERATURE (°C)

3513 G06

3513 G04

SW4 Current Limit

500

450

SW CURRENT LIMIT (mA)

400

V

CESAT

(mV)

350

300

250

200

150

100

–50 –30 –10 10 30 50 70 90 110

AMBIENT TEMPERATURE (°C)

3513 G07

SW1 V

CESAT

1000

900

800

700

600

500

400

300

200

100

0

500

1000 1500 2000

SW1 CURRENT (mA)

2500

3000

V

CE2SAT

(mV)

600

500

400

300

200

100

0

SW2 V

CESAT

0

400

800

1200

I

SW2

(mA)

1600

2000

3513 G09

3513 G08

3513fc

5

Parameter Name	Attribute value
EU restricts the use of certain hazardous substances	Compliant
ECCN (US)	EAR99
Part Status	Active
HTS	8542.39.00.01
Type	Step Up\|Step Down\|Non-Inverting\|Inverting
Output Type	Adjustable
Switching Frequency (kHz)	2100
Switching Regulator	Yes
Number of Outputs	5
Output Voltage (V)	0.8 to 40
Maximum Output Current (A)	3.5\|2.3\|0.38\|0.4
Minimum Input Voltage (V)	4.5
Maximum Input Voltage (V)	30
Typical Quiescent Current (uA)	7500
Line Regulation	0.03%/V
Minimum Operating Temperature (°C)	-40
Maximum Operating Temperature (°C)	125
Supplier Temperature Grade	Industrial
Packaging	Tape and Reel
Pin Count	38
Standard Package Name	QFN
Supplier Package	QFN EP
Mounting	Surface Mount
Package Height	0.75(Max)
Package Length	7
Package Width	5
PCB changed	38
Lead Shape	No Lead

	LT3513IUHF#TRPBF	LT3513EUHF#PBF	LT3513EUHF#TRPBF	LT3513IUHF#PBF
Description	Conv DC-DC 4.5V to 30V Non-Inv/Inv/Step Up/Step Down Quint-Out 0.8V to 40V 3.5A/2.3A/0.38A/0.4A Automotive 38-Pin QFN EP T/R	Conv DC-DC 4.5V to 30V Non-Inv/Inv/Step Up/Step Down Quint-Out 0.8V to 40V 3.5A/2.3A/0.38A/0.4A Automotive 38-Pin QFN EP Tube	Conv DC-DC 4.5V to 30V Non-Inv/Inv/Step Up/Step Down Quint-Out 0.8V to 40V 3.5A/2.3A/0.38A/0.4A Automotive 38-Pin QFN EP T/R	Conv DC-DC 4.5V to 30V Non-Inv/Inv/Step Up/Step Down Quint-Out 0.8V to 40V 3.5A/2.3A/0.38A/0.4A Automotive 38-Pin QFN EP Tube
EU restricts the use of certain hazardous substances	Compliant	Compliant	Compliant	Compliant
ECCN (US)	EAR99	EAR99	EAR99	EAR99
Part Status	Active	Active	Active	Active
HTS	8542.39.00.01	8542.39.00.01	8542.39.00.01	8542.39.00.01
Type	Step Up\|Step Down\|Non-Inverting\|Inverting	Non-Inverting\|Inverting\|Step Up\|Step Down	Step Up\|Step Down\|Non-Inverting\|Inverting	Non-Inverting\|Inverting\|Step Up\|Step Down
Output Type	Adjustable	Adjustable	Adjustable	Adjustable
Switching Frequency (kHz)	2100	2100	2100	2100
Switching Regulator	Yes	Yes	Yes	Yes
Number of Outputs	5	5	5	5
Output Voltage (V)	0.8 to 40	0.8 to 40	0.8 to 40	0.8 to 40
Maximum Output Current (A)	3.5\|2.3\|0.38\|0.4	0.38\|0.4\|3.5\|2.3	3.5\|2.3\|0.38\|0.4	3.5\|2.3\|0.38\|0.4
Minimum Input Voltage (V)	4.5	4.5	4.5	4.5
Maximum Input Voltage (V)	30	30	30	30
Typical Quiescent Current (uA)	7500	7500	7500	7500
Line Regulation	0.03%/V	0.03%/V	0.03%/V	0.03%/V
Minimum Operating Temperature (°C)	-40	-40	-40	-40
Maximum Operating Temperature (°C)	125	125	125	125
Supplier Temperature Grade	Industrial	Extended	Extended	Industrial
Packaging	Tape and Reel	Tube	Tape and Reel	Tube
Pin Count	38	38	38	38
Standard Package Name	QFN	QFN	QFN	QFN
Supplier Package	QFN EP	QFN EP	QFN EP	QFN EP
Mounting	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package Height	0.75(Max)	0.75(Max)	0.75(Max)	0.75(Max)
Package Length	7	7	7	7
Package Width	5	5	5	5
PCB changed	38	38	38	38
Lead Shape	No Lead	No Lead	No Lead	No Lead

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