Datasheet CF8141B Datasheet (NPC)

SM8141

NIPPON PRECISION CIRCUITS INC.

OVERVIEW

The SM8141 is a transformer-less electrolumines­cent (EL) sheet lamp driver , capable of dri ving sheets
up to 50cm

2

in size. It employs built-in high with­stand voltage output MOS transistors and requires
few external components, making it ideal for com­pact driver units in portable equipment.

FEATURES

■

Dedicated EL driver

■

■

■

■

■

■

2

50cm

maximum EL sheet drive capability
Noise-less smooth drive waveform
Two oscillators (EL and coil)(SM8141A)
Stand-by function (SM8141B)
High-efficiency MOS transistor driver
Dual supply operation possible
(See TYPICAL APPLICATIONS)

■

2.0 to 5.5V supply operation

■

200Vp-p maximum drive voltage

■

250Hz standard drive frequency

■

8-pinVSOP package

■

Chip form

ORDERING INFORMATION

EL Sheet Driver

PINOUT

8pin VSOP (TOP VIEW)

1CHV
2LDR
3VSS

8141A

4OCL 5 OCE

1CHV
2LDR
3VSS

8141B

4OSC 5 ENA

PACKAGE DIMENSIONS

(Unit : mm)

8 OUT1
7 OUT2
6 VDD

8 OUT1
7 OUT2
6 VDD

DEVICE PACKAGE

SM8141AV 8pin VSOP

SM8141BV 8pin VSOP

CF8141A Chip form
CF8141B Chip form

0.575 typ

0.65

3.1 ± 0.3

0.10

4.4 ± 0.2

1.15 ± 0.05

0.1 ± 0.05

0.22 ± 0.1

6.4 ± 0.3

0.12

0 to 10

0.5 ± 0.2

0.1

+

0.15

0.05

−

M

NIPPON PRECISION CIRCUITS—1

PAD DIMENSIONS

(Unit : mm)

6

7

SM8141

(1800,1300)

45

8

Y

(0,0)

NPC
SA8141

12

X

Chip size : 1.80 × 1.30 (mm)
Chip thickness : 300 ( µ m)
Chip base : V

SS

3

PIN DESCRIPTION

• SM8141A

Pin

number

Pad

number

1 6 CH V 635 1150 I High-voltage DC input
2 7 L DR 435 1150 O Booster coil driver output
3 8 V SS 180 420 – Ground
4 1 O CL 18 0 1 80 I Coil driver oscillator (oscillator frequency determined by external variable resistor)
5 2 OC E 1620 180 I EL driver oscillator (oscillator frequency determined by external variable resistor)
6 3 VD D 1620 420 – Supply
7 4 OUT2 1650 1120 O Output 2
8 5 OUT1 1110 1120 O Output 1

Name

Pad dimensions

I / O Function

X (µm) Y (µm)

• SM8141B

Pin

number

Pad

number

1 6 CH V 635 1150 I High-voltage DC input
2 7 L DR 435 1150 O Booster coil driver output
3 8 V SS 180 420 – Ground

4 1 OS C 180 180 I

5 2 E NA 1620 180 I Enable input (built-in pull-down resistor)
6 3 VD D 1620 420 – Supply
7 4 OUT2 1650 1120 O Output 2
8 5 OUT1 1110 1120 O Output 1

Name

Pad dimensions

I / O Function

X (µm) Y (µm)

Coil and EL driver oscillator
(oscillator frequency determined by external vari able resistor)

NIPPON PRECISION CIRCUITS—2

BLOCK DIAGRAM

• SM8141A

SM8141

• SM8141B

VDD

VSS

LDR

Divider

Oscillation Circuit

for Voltage Booster

OCL

CHV

OUT1

High Voltage

Switching Circuit

Divider

Oscillasion Circuit

for output

OCE

OUT2

VDD

VSS

LDR

Divider Divider

CHV

Oscillation Circuit for

boosting voltage and EL drive

OUT1

High Voltage

Switching Circuit

OSC

OUT2

ENA

NIPPON PRECISION CIRCUITS—3

−

≤

=

=

−

SPECIFICATIONS

Absolute Maximum Ratings

V

= 0 V

SS

Parameter Symbol Condition Rating Unit

Supply voltage range V
Input voltage range V

Output voltage

Storage temperature range T
Po w er dissipation P
Soldering temperature T
Soldering time t

DD

IN

V

CHV

V

LDR

V

OUT1/2

STG

D

SLD

SLD

−

°

°

°

−

°

SM8141

0.3 to 7.0 V
All Input pins V
CHV pin 0.5 to 120 V
LDR pin 0.5 to 120 V
OUT1 , OUT2 pin 0.5 to 120 V

T

85

C 100 m W

a

SS

0.3 to V

+ 0.3 V

DD

55 to 125

255

10 s

C

C

Recommended Operating Conditions

V

= 0 V

SS

Parameter Symbol Condition

Supply voltage V
Operating temperature T

Operating current

1

Coil inductance L

1. Max value is as same as Absolute Maximum Ratings.

DD

OPR

I

DD2

LDR2

Including coil current, V
Including coil current, V
f

= 64 kHz – 0.47 – m H

LDR

Rating

min typ max

2.0 3.0 5.5 V
40 – 85

3.0V – – 60

DD

5.0V – – 36

DD

Unit

C

mA

NIPPON PRECISION CIRCUITS—4

DC Characteristics

−

−

+

→

T

= 25 ° C, V

a

= 0 V, V

SS

= 3.0 V unless otherwise noted

DD

SM8141

Ω

Ω

Ω

Ω

Ω

Ω

+

µ

µ

Parameter Ver. Symbol Condition

Supply voltage A / B V
CHV output voltage A / B V
OUT1, OUT2 HIGH-level output voltage A / B V
OUT1, OUT2 LOW-level output voltage A / B V
LDR output resistance A / B R
OCE oscillator frequency

A

OCE oscillator frequency range f
OCL oscillator frequency

A

OCL oscillator frequency range f
OSC oscillator frequency

B

OSC oscillator frequency range f
OUT1, OUT2 output frequency

A / B

OUT1, OUT2 output frequency range f
LDR inductance driver frequency

A / B

LDR inductance driver frequency range f
ENA HIGH-level input voltage

V

B

ENA LOW-level input voltage V
ENA input current B I
Operating current A / B I
Stand-by current B I
ENA rise time B t

DD

CHV

OUTH

OUTL

LDR

f

OCE1

OCE2

f

OCL1

OCL2

f

OSC1

OSC2

f

OUT1

OUT2

f

LDR1

LDR2

ENAH

ENAL

ENAH

DD1

STB

ENA

Rating

Unit

min typ max

2.0 3.0 5.5 V

0.5 – 100 V
– – 100 V
– – 0.5 V

I

= 50 mA – 8.0 12.0

LDR

R

OCE

= 200 k

205 256 307

kHz

32 – 1024

R

OCL

= 200 k

205 256 307

kHz

32 – 1024

R

OSC

= 200 k

205 256 307

kHz

32 – 1024

R

/R

OCE

OSC

= 200 k

200 250 300

Hz

31 – 1000

R

/R

OCL

OSC

= 200 k

51 64 77

kHz

8 – 256

ENA = “H”, V
ENA = “L”, V
V

ENAH

= 2.0 to 5.5V V

DD

= 2.0 to 5.5V V

DD

= 3.0V, V

DD

0.5 – V

DD

0.3 – V

SS

DD

SS

= 3.0V 2.0 4.0 6.0

0.3

0.5

Excluding coil current – – 1 m A
ENA = “L” – – 1
V

ENAL

V

ENAH

– – 100 ms

V

A

A

VSS

V

SS 0.5

VDD 0.5−

+

VDD

tENA

Rise time

NIPPON PRECISION CIRCUITS—5

TYPICAL APPLICATIONS

• SM8141A

SM8141

EL size:20cm to 30cm
Current Consumption 20mA

0.1µF
100V

0.47mH

0.01µF
C

bypass

3.0V

EL size:10cm to 15cm

0.1µF

100V

2 2

Current Consumption 20mA

0.47mH

0.01µF
C

bypass

1.5V

2 2

SM8141A

1 CHV

2 LDR

3 VSS

4 OCL 5OCE

200kΩ

Diode:TOSHIBA 1SS250
Coil:MURATA LQH4N471K04M00

SM8141A

1 CHV

2 LDR

3 VSS

4 OCL 5OCE

390kΩ

3.0V

EL sheet

8OUT1

7OUT2

6VDD

200kΩ

EL sheet

8OUT1

7OUT2

6VDD

200kΩ

EL size:30cm to 50cm

Current Consumption 40mA

0.1µF
100V

0.47mH

0.01µF
C

bypass

3.0V

2 2

Diode:TOSHIBA 1SS250
Coil:MURATA LQH4N471K04M00

SM8141A

1 CHV

2 LDR

3 VSS

4 OCL 5OCE

390kΩ

Diode:TOSHIBA 1SS250
Coil:MURATA LQH4N471K04M00

EL sheet

8OUT1

7OUT2

6VDD

200kΩ

NIPPON PRECISION CIRCUITS—6

• SM8141B

SM8141

EL size 20cm to 30cm

22

Current Consumption 20mA

0.1µF

100V

0.47mH

0.01µF
C

bypass

3.0V

EL size 10cm to 15cm

22

Current Consumption 20mA

0.1µF
100V

0.22mH

0.01µF
C

bypass

1.5V

SM8141B

1 CHV

2 LDR

3 VSS

4 OSC 5ENA

200kΩ

Diode:TOSHIBA 1SS250
Coil:MURATA LQH4N471K04M00

SM8141B

1 CHV

2 LDR

3 VSS

4 OSC 5ENA

200kΩ

3.0V
Diode:TOSHIBA 1SS250

Coil:MURATA LQH4N221K04M00

EL sheet

8OUT1

7OUT2

6VDD

EL sheet

8OUT1

7OUT2

6VDD

EL size 30cm to 50cm

22

Current Consumption 40mA

0.1µF
100V

0.22mH

0.01µF
C

bypass

3.0V

SM8141B

1 CHV

2 LDR

3 VSS

4 OSC 5ENA

200kΩ

Diode:TOSHIBA 1SS250
Coil:MURATA LQH4N221K04M00

EL sheet

8OUT1

7OUT2

6VDD

NIPPON PRECISION CIRCUITS—7

SM8141

NIPPON PRECISION CIRCUITS INC. reserves the right to make changes to the products described in this data sheet in order to
improve the design or performance and to supply the best possible products. Nippon Precision Circuits Inc. assumes no responsibility for
the use of any circuits shown in this data sheet, conveys no license under any patent or other rights, and makes no claim that the circuits
are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Nippon Precision
Circuits Inc. makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification.
The products described in this data sheet are not intended to use for the apparatus which influence human lives due to the failure or
malfunction of the products. Customers are requested to comply with applicable laws and regulations in effect now and hereinafter,
including compliance with export controls on the distribution or dissemination of the products. Customers shall not export, directly or
indirectly, any products without first obtaining required licenses and approvals from appropriate government agencies.

NIPPON PRECISION CIRCUITS INC.
4-3, Fukuzumi 2-chome

Koto-ku, To kyo 135-8430, Japan

NIPPON PRECISION CIRCUITS INC.

Telephone: [phone]
Facsimile: 03-3642-6698

NC9710DE 1999.10

NIPPON PRECISION CIRCUITS—8