TCA62746FG [MARKTECH]

Interface Circuit;


型号：	TCA62746FG
厂家：	MARKTECH CORPORATE
描述：	Interface Circuit 驱动光电二极管接口集成电路
文件：	总15页 (文件大小：338K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

TOSHIBA

TCA62746FG/FNAG

TENTATIVE

TOSHIBA CMOS INTEGRATED CIRCUIT SILICON MONOLITHIC

TCA62746FG/FNAG

16-ch constant current LED driver

TCA62746 FG

TCA62746FNAG

The TCA62746FG/FNAG are the LED driver who has constant

current output by the sink type and is the most suitable for the LED

module and the LED display to light up.

This driver is composed of 16-bit constant current outputs, 16-bit

shift register, 16-bit latch and 16-bit AND logic gates.

All output becomes the same value except for the error when the

current value of 16-bit outputs and set a resistor outside.

And, the LED of the output load is broken ( open ) and has the

function that the lighting-up bad condition can be detected.

SSOP24-P-300-1.00B

SSOP24-P-150-0.64

FEATURE

• 16 output built-in

• Output open detection (OOD)

Output a detection result in the transfer from SOUT by the detection mode.

• Output short detection (OSD) <--- Consideration in built-in.

Output a detection result in the transfer from SOUT by the detection mode.

• Output current capability

2 ~ 80 mA × 16-bit constant current output

• Constant current accuracy

± 1 % of output to output

<--- this is the target spec.

± 3 % of device to device

• Control data form

1 I/O ( Serial in, serial out )

• High-speed switching output

tr/tf = 15 ns (typ.) @ IOUT = 20 mA

<--- this is the target spec.

• CMOS input level ( schumit trigger input )

• Data transfer frequency

• Power-supply voltage

• Operating temperature

• Supply voltage for the LED

fMAX = 25 MHz

VDD = 3.0 ~ 5.5 V

Topr = -40 ~ 85 ℃

VOUT = 17 V ( min. )

• The output propagation-delay-time to have been well-balanced

tpLH ≒ tpHL @ OE-OUTn - - - target spec..

• Output delay circuit built-in for noise margine

• Power on reset circuit (POR) built-in - - - This is idea

• Upper compatible of the series of the TB62706B and TB62726A series

• Package

FG type :

SSOP24-P-300-1.00B

FNAG type : SSOP24-P-150-0.64 (Manufactured by Malaysia factory.)

Company Headquarters

California Sales Office:

950 South Coast Drive, Suite 225

Costa Mesa, California 92626

Toll Free: 800.984.5337

3 Northway Lane North

Latham, New York 12110

Toll Free: 800.984.5337

Fax: 518.785.4725

Web: www.marktechopto.com | Email: info@marktechopto.com

Fax: 714.850.9314

TOSHIBA

TCA62746FG/FNAG

TENTATIVE

PACKAGE AND PIN PAYOUT ( TOP VIEW )

< FG-type >

< FNAG-type >

GND

SIN

OUT14

OUT15

OUT13

OUT12

OUT11

OUT10

OUT9

OUT8

OUT7

OUT6

OUT5

OUT4

OUT3

OUT2

EXT

CLK

SOUT

ENABLE

SERIAL-OUT

R-EXT

LAT

OUT 0

OUT 1

OUT 2

OUT 3

OUT 4

OUT 5

OUT 6

OUT 7

OUT 15

OUT 14

OUT 13

OUT 12

OUT 11

OUT 10

OUT 9

VDD

GND

SERIAL-IN

CLOCK

LATCH

OUT0

OUT 8

OUT1

WARNING :

Short-circuiting an output terminal to GND or to the power supply terminal may broken the device.

Please take care when wiring the output terminals, the power supply terminal and the GND terminals.

BLOCK DIAGRAM

Exp. this is one of the ideas of control circuit for OOD and OSD.

OUT0 OUT1

OUT15

2.7V

0.05V

OUT0 OUT1

OUT15

Constant current outputs with

delay for total rush current

B.G

POR

Delay

GND

EXT

Q0 Q1 ---

Q15

OOD/OSD

Controller

16bit D-latch

D0 D1 ---

SLAT

D15

ST-OUT

SIN

Q0 Q1 ---

Q15

SOUT

Presetable 16bit Shift Register

ST D0~D15

SCK

OSD

16bit

MUX

OOD

2005-05-19 (Ver.03)

TOSHIBA

TCA62746FG/FNAG

TENTATIVE

TIMING DIAGRAM

n=0 1 2 3 4 5 6 7 8 9 101112131415

3.3v/5v

CLK

3.3v/5v

SIN

3.3v/5v

LAT

3.3v/5v

Off

OUT0

OUT1

OUT3

Off

OUT15

SOUT

3.3v/5v

<-- SOUT has half clock delayed.

WARNING :

Latch circuit is leveled-latch circuit. Be careful because it is not triggered-latch circuit.

NOTE1 :

The latches circuit holds data by pulling the LAT terminal Low. And, when LAT terminal is a High-level,

latch circuit doesn’t hold data, and it passes from theInput to the output.

When EN terminal is Low-level, output terminal OUT0~OUT15 respond to the data, and on & off does.

And, when EN terminal is a High-level, it offs with the output terminal regardless of the data.

TRUTH TABLE

CLK

LAT

SIN

OUT0 --- OUT7 --- OUT15

SOUT

Positive edge

Negative edge

Dn --- Dn-7 --- Dn-15

No Change

Dn+2 --- Dn-5 --- Dn-13

Off

Dn-15

Dn-14

Dn-13

Dn+1

Dn+2

Dn+3

NOTE2:

OUT0~OUT15=ON when Dn=Hi, OUT0~OUT15=OFF when Dn=Lo.

In order to ensure that the level of the power supply voltage is correct, an external resistor have to

connected between R-EXT and GND.

2005-05-19 (Ver.03)

TOSHIBA

TCA62746FG/FNAG

TENTATIVE

TERMINAL DESCRIPTION

Pin No.

Pin Name

Function

GND

GND terminal for control logic

SIN

Input terminal for serial data for data shift register

Input terminal for clock for data shift on rising edge

CLK

Input terminal for data strobe When the LAT = ”Hi”, data is no latched.

When ithe LAT = ”Lo”, data is latched.

LAT

5 ~ 20

OUT0 ~ OUT15 Constant-current output terminals

Input terminal for output enable.

All outputs (OUT0 ~ OUT15) are turned off, when the EN = ”Hi”.

And are turned on, when the EN = ”Lo”.

SOUT

R_EXT

Output terminal for serial data input on SIN terminal

Input terminal used to connect an external resistor.

This regulated the output current.

V_DD

3.3V - 5V supply voltage terminal.

EQUIVALENT CIRCUIT OF INPUTS AND OUTPUT

2. LAT Terminal

1. EN Terminal

R(UP)

LAT

GND

R(DOWN)

4. SERIAL-OUT Terminal

3. CLOCK,SERIAL-IN Terminal

CLK,

SIN

SOUT

Internal data

GND

5. OUT0 ~ OUT15 Terminal

OUT 0 ~ OUT15

Parasitic Diode

GND

2005-05-19 (Ver.03)

TOSHIBA

TCA62746FG/FNAG

TENTATIVE

ABSOLUTE MAXIMUM RATINGS

Characteristics

Supply Voltage

Input Voltage

Symbol

Rating

Unit

V_DD

-0.2 ~ V_DD+0.2

V_IN

Output Current

Output Voltage

I_OUT

mA/ch

V_OUT

P_d1

-0.2 ~ 6.5

FNAG type : 0.625(Free air)

FG type : 0.83(Free air), 1.00(On PCB)

FNAG type : 200(Free air)

FG type : 140(Free air), 120(On PCB)

-40 to 85

Power Dissipation

°C/W

°C

P_d2

R_th(j-a)

T_opr

Thermal Resistance

Operating Temperature

Storage Temperature

T_stg

-55 to 150

NOTE3:

With devide monuted on glass-epoxy PCB of less than 40% Cu and of dimensions

50mm x 50 mm x 1.6mm.

RECOMMENDED OPERATING CONDITION

(T_opr= -40 ~ 85 °C, unless otherwise noted. )

Characteristics

Supply voltage

Output voltage

Symbol

Condition

Min

Typ

Max

Unit

V_DD

5.5

V_OUT(on)

I_OUT

0.7

Each DC 1 Circuit

mA/ch

Output current

I_OH

-1

SOUT

I_OL

VDD+0.15

0.4

V_IH

2.5

-0.15

Input voltage

Input current

V_IL

I_IH

The terminal which

doesn't have pull

-1

I_IL

up/pull down resistance

Clock frequency

Latch pulse width

Clock pulse width

f_CLK

MHz

t_{w LAT}

t_{w CLK}

Cascade connected

I_OUT= 2 ~ 80 mA

Enable pulse width

**** Note 4

t_{w EN}

200

Setup time

for clock terminal

t _SETUP

t _HOLD

t _SETUP

Hold time

for clock terminal

Setup time

for latch terminal

NOTE4:

When the pulse of the “Lo” level is inputted to the EN terminal held in the “Hi” level.

2005-05-19 (Ver.03)

TOSHIBA

TCA62746FG/FNAG

TENTATIVE

ELECTRICAL CHARACTERISTICS

( V_DD= 3 V ~ 5.5 V, T_opr= 25 °C unless otherwise noted.)

Characteristics

Symbol

Condition

Min

Typ

Max

5.5

Unit

Supply voltage

V_DD

Normal operation

3.0

I_OUT

V_OUT=0.4V,V_DD=3.3V

R_EXT

910 ohm

R_EXT

V_OUT=0.4V,V_DD=5V

V_OUT=0.7V,V_DD=3.3V

V_OUT=0.7V,V_DD=5V

V_OUT=0.4V,

Output current

250 ohm

d_IOUT

Output current

R_EXT=*** ohm

All output on

+/-1

+/-3

error between bits

V_OUT=0.4V,

d_IOUT

I_OZ

R_EXT=*** ohm

Output leakage

Current Input voltage

V_OUT= 6.5V

I_OL= +1 mA, V_DD= 3.3V

I_OL= +1 mA, V_DD= 5V

I_OH= - 1 mA, V_DD= 3.3V

I_OH= +1 mA,V_DD= 5V

0.3

V_OL

V_OH

SOUT terminal

Voltage

V_DD-0.4

Output current

%/V

%/V_DD

When V_DDis changed 3V upto 5.5V

-1

-5

supply voltage

regulation

Pull up resistor

R_(UP)

ENABLE terminal

LATCH terminal

200

Pull down resistor

R_(DOWN)

I_DD(OFF)

R_EXT=Open, V_OUT=15V

0.1

3.5

0.5

I_DD(OFF)

R_EXT=910 Ω

R_EXT=250 Ω

All output off,

V_OUT=15V

I_DD(OFF)

All output on,

V_OUT=0.7V

R_EXT=910 Ω

TBD

I_DD(ON)

Supply current

T_opr= -40 °C,

Same as the avobe.

All output ON,

V_OUT=0.7V

T_opr= -40 °C,

Same as the avobe.

R_EXT=250Ω

I_DD(ON)

2005-05-19 (Ver.03)

TOSHIBA

TCA62746FG/FNAG

TENTATIVE

SWITCHING CHARACTERISTICS

(T_opr= 25 °C, unless otherwise noted )

Characteristics

Symbol

Condition

CLK-OUT0, LAT = ”Hi”, EN = ”Lo”

LAT-OUT0, EN = ”Lo”

EN-OUT0, LAT= ”Hi”

Min

Typ

Max

100

Unit

t_pLH

CLK-SOUT

Propagation delay

t_pHL

CLK-OUT0, LAT = “Hi”, EN = ”Lo”

LAT-OUT0, EN = ”Lo”

EN-OUT0, LAT = ”Hi”

CLK-SOUT

100

t_pLH

t_or

Output rise time

Output fall time

Voltage waveform 10%~90%

Voltage waveform 90%~10%

150

t_of

Slow CLK rise time

Slow CLKfall time

tr range 10%~90%

Cascade connected

tf range 90%~10%

t_DLY(on)1

t_DLY(off)1

t_DLY(on)2

t_DLY(off)2

225

OUT0 ~ OUT1

OUT0 ~ OUT15

Output skew

by delay circuit

100

500

Condition : (Refer to test circuit)

T_opr= 25 degree, V_DD=V_IH=3.3V and 5V, V_OUT= 0.7 V, V_IL= 0 V,R_EXT= 910 ohm,

V_L= 3 V, R_L= 120 ohms,C_L= 10.5 pF

NOTE5 :

If the device is connected in a cascade and tr/tf for the waveform is large, it may not be possible to

achieve the timing required for data transfer. Please consider the timings carefully.

2005-05-19 (Ver.03)

TOSHIBA

TCA62746FG/FNAG

TENTATIVE

OUTPUT DELAY CIRCUIT

The connection of the delay to decrease switching noise : Delay circuit for OUT0 ~ OUT15

OUT0

x 1

OUT01

Delay

x15

OUT15

Delay

The total current waveform and each voltage waveform

The total current

of Out0 ~ Out15.

Out 00

Out 00 01

50%

a delay time

Total delay of waveform when turn on.

Total delay of waveform when turn off.

The delay circuit is put on the output, and the level of the noise will be decreaced.

2005-05-19 (Ver.03)

TOSHIBA

TCA62746FG/FNAG

TENTATIVE

TEST CIRCUIT

I_DD

VDD

V_IH,V_IL

R_L

ENABLE

CLOCK

OUT0

Function

Generator

C_L

LATCH

I_OL

OUT15

SERIAL-IN

R-EXT

SERIAL-OUT

V_L

GND

Logic input waveform

I_ref

C_L

=V =3.3V

V =0V

t_r= t_f= 10ns

(10% to 90%)

2005-05-19 (Ver.03)

TOSHIBA

TCA62746FG/FNAG

TENTATIVE

TIMING WAVEFORM

1. CLK ,SIN, SOUT

t_wCLK

CLK

SIN

50%

t _SETUP

50%

t _HOLD

SOUT

50%

t_pLH/ t_pHL

2. CLK, SIN , LAT, EN, OUTn

CLK

SIN

50%

t _SETUP

50%

LAT

t_{w LAT}

t_{w EN}

t_SETUP

50%

OUTn

50%

t_pLH1 / t_pHL

t_pLH2 / t_pHL

t_pLH3 / t_pHL

3. OUTn

90%

OUTn (current waveform)

10%

t_of

t_or

2005-05-19 (Ver.03)

TOSHIBA

TCA62746FG/FNAG

TENTATIVE

OUTPUT CURRENT vs DUTY (Turn on Rate)

2005-05-19 (Ver.03)

TOSHIBA

TCA62746FG/FNAG

TENTATIVE

NOTE6 :

Operating is likely to become unstable due to the electromagnetic inductive load of wiring and so on.

Recommend that adjoins and arranged so far as device and LED are possible.

Damage by the over-voltage is likely to be suffered in LED and the output by over voltage's occurring

due to the inductance between LEDs from the output terminal.

There is only one GND terminal in this device.

When the inductance of the GND line resistance and so on are big.

It is likely to operate faultily by the GND noise when output switchings by the circuit board pattern

and wiring.

And, it is necessary for the REXT terminal to connect it in the GND line which became stable through

the resistor.

Vibration is likely to occur for the output wave form when GND was unstable and capacity

(beyond 50pF) was added.

Therefore, be fully careful of the circuit board pattern layout and wiring from the controller.

This application circuit is a reference example, and it doesn't assure operating in all the conditions.

Be sure to carry out operating confirmation.

This device doesn't build in the protection circuit of over-voltage, over-current and over-temperature.

Carry it out on the control side when protection is necessary.

Device is likely to destroy it when it short-circuits between the output terminals to each power supply.

Be fully careful of output terminal, each power supply (VDD, VLED) and the design of the GND line.

2005-05-19 (Ver.03)

TOSHIBA

TCA62746FG/FNAG

TENTATIVE

PACKAGE DIMMENSION : SSOP24-P-300-1.00B

2005-05-19 (Ver.03)

TOSHIBA

TCA62746FG/FNAG

TENTATIVE

PACKAGE DIMMENSION : SSOP24-150-0.635

UNIT : Inch

TENTATIVE

0.0325 REF

0.008 ~ 0.012

0.025

0.337

~0.344

2005-05-19 (Ver.03)

TOSHIBA

TCA62746FG/FNAG

TENTATIVE

About solderability, following conditions were confirmed

 Solderability

(1) Use of Sn-63Pb solder Bath

∙

solder bath temperature  230°C

dipping time  5 seconds

the number of times  once

use of R-type flux

(2) Use of Sn-3.0Ag-0.5Cu solder Bath

∙

solder bath temperature  245°C

dipping time  5 seconds

the number of times  once

use of R-type flux

000707EBA

RESTRICTIONS ON PRODUCT USE

 TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor

devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical

stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety

in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such

TOSHIBA products could cause loss of human life, bodily injury or damage to property.

In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as

set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and

conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability

Handbook” etc..

 The TOSHIBA products listed in this document are intended for usage in general electronics applications

(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,

etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires

extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or

bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or

spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,

medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this

document shall be made at the customer’s own risk.

 The products described in this document are subject to the foreign exchange and foreign trade laws.

 The information contained herein is presented only as a guide for the applications of our products. No

responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other

rights of the third parties which may result from its use. No license is granted by implication or otherwise under any

intellectual property or other rights of TOSHIBA CORPORATION or others.

 The information contained herein is subject to change without notice.

2005-05-19 (Ver.03)

TCA62746FG [MARKTECH]

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