ROHM BD6753KV Technical data

System Lens Driver Series for Digital Still Cameras / Single-lens Reflex Cameras

6ch System Lens Drivers
for Digital Still Cameras /
Single-lens Reflex Cameras

BD6373GW,BD6873KN,BD6753KV

No.09014EAT02

●Description

The BD6373GW motor driver provides 6 Full-ON Drive H-bridge channels. The BD6873KN motor driver provides 5 Full-ON
Drive H-bridge channels and 1 Linear Constant-Current Drive H-bridge channel, while the BD6753KV provides 4 Full-ON
Drive channels and 2 PWM Constant-Current Drive H-bridge channels.

Stepping motors can be used for auto focus, and either zoom or iris. A new drive type (lens barrier) is also available. Three types of drivers
for shutter are offered: a simple Full-ON type, a high-precision linear constant current type, or a high-efficiency PWM constant current type,
enabling selection of the ideal solution based on the application.

●Features

1) Subminiature 31PIN Wafer-level CSP (Chip Size Package): 2.6 x 2.6 x 0.85mm3 (BD6373GW)

2) DMOS output allowing a range power supply: 4.5V to 10.5V (BD6753KV; VM1), 2.0V to 10.5V (BD6753KV; VM2 to VM4)

3) Low ON-Resistance Power MOS output:
Full-ON Drive block with 1.2Ω Typ. (BD6373GW)
Full-ON Drive block with 1.2Ω Typ. and Linear Constant-Current Drive block with 1.0Ω Typ. (BD6873KN)
Full-ON Drive block with 1.2Ω Typ. and PWM Constant-Current Drive block with 1.2Ω Typ. (BD6753KV)

4) Serial interface 3-line bus control input (BD6753KV)

5) Built-in two-step output current setting switch for the Linear Constant-Current Drive block (BD6873KN)

6) Drive mode switching function

7) 1.2V±3% high-precision reference voltage output (BD6873KN)

8) Constant-Current Drive block features phase compensation capacitor-free design (BD6873KN)

9) Built-in ±3% high-precision Linear Constant-Current Driver (BD6873KN)

10) Built-in peak current control PWM Constant-Current Driver (BD6753KV)

11) Built-in charge pump circuit for the DMOS gate voltage drive (BD6753KV)

12) UVLO (Under Voltage Lockout Protection) function

13) Built-in TSD (Thermal Shut Down) circuit

14) Standby current consumption: 0μA Typ.

●Absolute Maximum Ratings

Parameter Symbol

BD6373GW BD6873KN BD6753KV

Limit

Unit

Power supply voltage VCC -0.5 to +6.5 0 to +7.0 -0.5 to +7.0 V
Motor power supply voltage VM -0.5 to +6.5 0 to +7.0 -0.5 to +12.5 V
Charge pump voltage VG - - 18.0 V
Control input voltage VIN -0.5 to VCC+0.5 0 to VCC -0.5 to VCC+0.5 V
Power dissipation Pd 940

1

※

950

2

※

112 5

3

※

mW
Operating temperature range Topr -25 to +85 -25 to +85 -25 to +75 °C
Junction temperature Tjmax +150 +150 +150 °C
Storage temperature range Tstg -55 to +150 -55 to +150 -55 to +150 °C
H-bridge output current Iout -800 to +800

※1 Reduced by 7.52mW/°C over 25°C, when mounted on a glass epoxy board (50mm x 58mm x 1.75mm; 8layers).
※2 Reduced by 7.6mW/°C over 25°C, when mounted on a glass epoxy board (70mm x 70mm x 1.6mm).
※3 Reduced by 9.0mW/°C over 25°C, when mounted on a glass epoxy board (70mm x 70mm x 1.6mm).
※4 Must not exceed Pd, ASO, or Tjmax of 150°C.

4

※

-800 to +800

4

※

-800 to +800

4

※

mA/ch

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1/17

2009.06 - Rev.A

BD6373GW, BD6873KN, BD6753KV

Technical Note

●Operating Conditions (Ta=-25 to +85°C(BD6373GW, BD6873KN), -25 to +75°C(BD6753KV))

Parameter Symbol

BD6373GW BD6873KN BD6753KV

Limit

Power supply voltage VCC 2.5 to 5.5 2.5 to 5.5 2.7 to 5.5 V

Motor power supply voltage VM 2.5 to 5.5 2.5 to 5.5

4.5 to 10.5 (VM1)

2.0 to 10.5 (VM2 to VM4)
Control input voltage VIN 0 to VCC 0 to VCC 0 to VCC V
Output current control input
voltage range
PWM signal input frequency FPWM - - 0 to 0.1 MHz
H-bridge output current Iout -500 to +500

※5 Must not exceed Pd or ASO.

VLIM - 0 to VCC 0 to 0.5 V

5

※

-500 to +500

5

※

-500 to +500

5

※

mA/ch

●Electrical Characteristics

1) BD6373GW Electrical Characteristics (Unless otherwise specified, Ta=25°C, VCC=3.0V, VM=5.0V)

Parameter Symbol

Min. Typ. Max.

Limit

Unit Conditions

Overall
Circuit current ICC - 1.0 1.9 mA no signal and no load
Control input (IN=ENABLExx, INPUTx, and BRAKEx)
High level input voltage VINH 2.0 - VCC V
Low level input voltage VINL 0 - 0.7 V
High level input current IINH 15 30 60 μA VINH=3V
Low level input current IINL -1 0 - μA VINL=0V
UVLO
UVLO voltage VUVLO 1.6 - 2.4 V
Full-ON Drive block (ch1 to ch6)

Output ON-Resistance 1 RON1 - 1.2 1.5 Ω

Output ON-Resistance 2 RON2 - 1.5 2.0 Ω

Io=±400mA on high and low sides In total
(VM=5V)
Io=±400mA on high and low sides In total

(VM=3V)
Turn on time ton - 0.55 1.95 μs RL=20Ω
Turn off time toff - 0.08 0.5 μs RL=20Ω
Rise time tr 0.1 0.15 1.0 μs RL=20Ω
Fall time tf - 0.03 0.2 μs RL=20Ω

2) BD6873KN Electrical Characteristics (Unless otherwise specified, Ta=25°C, VCC=3.0V, VM=5.0V)

Parameter Symbol

Min. Typ. Max.

Limit

Unit Conditions

Overall
Circuit current
during standby operation

ICCST - 0 10 μA PS=0V

Circuit current ICC - 1.2 2.3 mA PS=VCC with no signal and no load
Power-saving (PS)
High level input voltage VPSH 2.0 - - V
Low level input voltage VPSL - - 0.7 V
High level input current IPSH 15 30 60 μA VPS=3V
Low level input current IPSL -1 0 - μA VPS=0V
Control input (IN=IN1A to IN5B, SEL1 to 3, BRK1, EN1, IN6, and VLIMS)
High level input voltage VINH 2.0 - - V
Low level input voltage VINL - - 0.7 V
High level input current IINH 15 30 60 μA VINH=3V
Low level input current IINL -1 0 - μA VINL=0V
Pull-down resistance RIN 50 100 200 kΩ
UVLO
UVLO voltage VUVLO 1.6 - 2.4 V
Full-ON Drive block (ch1 to ch5)
Output ON-Resistance RON - 1.2 1.5 Ω Io=±400mA on high and low sides In total
Linear Constant-Current Drive block (ch6)
Output ON-Resistance RON - 1.0 1.25 Ω Io=±400mA on high and low sides in total
VREF output voltage VREF 1.16 1.20 1.24 V Iout=0~1mA
Output limit voltage VOL 194 200 206 mV RNF=0.5Ω, VLIM=0.2V

Unit

V

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2/17

2009.06 - Rev.A

BD6373GW, BD6873KN, BD6753KV

3) BD6753KV Electrical Characteristics (Unless otherwise specified, Ta=25°C, VCC=3.3V, VM=10.5V)

Parameter Symbol

Overall

Circuit current
during standby operation

Circuit current ICC - 2.2 3.0 mA PS=VCC with no signal; CRx open
Power-saving (PS)
High-level input voltage VPSH 2.0 - - V
Low-level input voltage VPSL - - 0.7 V
High-level input current IPSH 25 50 100 μA VPSH=3.3V
Low-level input current IPSL -1 0 - μA VPSL=0V
Control input (IN=STROBE, CLK, DATA, and PWM1 to 6)
High-level input voltage VINH 2.0 - - V
Low-level input voltage VINL - - 0.7 V
High-level input current IINH 16.5 33 66 μA VINH=3.3V
Low-level input current IINL -1 0 - μA VINL=0V
Pull-down resistance RIN 50 100 200 kΩ
Charge pump
Charge pump voltage VCP 16 16.5 - V
UVLO
UVLO voltage VUVLO 1.6 - 2.5 V
Full-ON Drive block (ch1 to ch4)

Output ON-Resistance RON - 1.2 1.5 Ω

PWM Linear Constant-Current Drive block (ch5 and ch6)

Output ON-Resistance RON - 1.2 1.5 Ω

VLIM pin input current IVLIM -1 -0.2 - μA VLIMx=0V, SENSEx=0.5V
SENSE pin input current ISENSE -1 -0.2 - μA VLIMx=0.5V, SENSEx=0V
Output limit voltage VOL 485 500 515 mV VLIMx=500mV
CR clamp voltage VCR 0.8 0.9 1.0 V R=10kΩ
CR switching high voltage VCRH 0.72 0.80 0.88 V
CR switching low voltage VCRL 0.36 0.40 0.44 V
Minimum ON time TMINON 0.1 0.5 1.0 μs C=470pF, R=10kΩ
Constant voltage power supply
VREF output voltage VREF 0.81 0.90 0.99 V Iout=0~1mA

ICCST - 0 10 μA PS=0V

Min. Typ. Max.

Limit

Unit Conditions

Io=±400mA, VG=16.5V
on high and low sides in total

Io=±400mA, VG=16.5V
on high and low sides in total

Technical Note

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3/17

2009.06 - Rev.A

BD6373GW, BD6873KN, BD6753KV

]

]

Technical Note

●Electrical Characteristic Diagrams

1250

1000

940mW

750

489mW

500

250

Power dissipation : Pd [mW]

0

0 25 50 75 100 125 150

Ambient t emperatur e : Ta [° C]

85°C

Fig.1 Power Dissipation Reduction

BD6373GW

1250

950mW

1000

750

494mW

500

250

Power dissipation : Pd [mW]

0

0 25 50 75 100 125 150

Ambient t emperatur e : Ta [° C]

Fig.2 Power Dissipation Reduction

85°C

BD6873KN

1250

112 5mW

1000

675mW

750

500

250

Power dissipation : Pd [mW]

0

0 25 50 75 100 125 150

Ambient t emperatur e : Ta [° C]

BD6753KV

75°C

Fig.3 Power Dissipation Reduction

Op. range

BD6373GW

Top 8 5 ° C
Mid 25°C
Low -25°C

5.0

4.0

3.0

2.0

Circuit current : ICC [mA

1.0

(2.5V to 5.5V)

5.0

4.0

3.0

2.0

Circuit current : ICC [mA

1.0

(2.5V to 5.5V)

0.0

0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0

Supply voltag e : VCC [V]

Fig.4 Circuit current

0.0

0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0

Supply voltag e : VCC [V]

Fig.5 Circuit current

Op. range

BD6373GW

Top 8 5 ° C
Mid 25°C
Low -25°C

5.0

4.0

3.0

2.0

1.0

Output ON resistance : RON [Ω]

0.0

0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0

(2.5V to 5.5V)

Supply voltage : VM [V]

Fig.8 Output ON-Resistance

-

5.0

4.0

3.0

2.0

1.0

Output ON resistance : RON [Ω]

0.0

0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0

Fig.7 Output ON-Resistance

(2.5V to 5.5V)

Supply voltag e : VM [V]

-

5.0

4.0

BD6753KV

Top 7 5 ° C
Mid 25°C
Low -25°C

250

200

3.0

2.0

1.0

Output ON resistance : RON [Ω]

0.0

13.0 14.0 15.0 16.0 17.0 18.0

Supply voltag e : VG [V]

Fig.10 Output ON-Resistance

=

150

100

50

RNF voltage : VRNF [mV]

0

0 50 100 150 200 250

VLIM voltage : VLIM [mV]

Fig.11 Output limit voltage

Op. range

Op. range

=

BD6873KN

Top 8 5 ° C
Mid 25°C
Low -25°C

BD6873KN

Top 8 5 ° C
Mid 25°C
Low -25°C

BD6873KN

Top 8 5 ° C
Mid 25°C

Low -25°C

Op. range

BD6753KV

Top 7 5 ° C
Mid 25°C
Low -25°C

5.0

4.0

3.0

2.0

1.0

Circuit current : ICC [mA]

0.0

0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0

(2.7V to 5.5V)

Supply voltag e : VCC [V]

Fig.6 Circuit current

Op. range

BD6873KN

Top 8 5 ° C
Mid 25°C
Low -25°C

5.0

4.0

3.0

2.0

1.0

Output ON resistance : RON [Ω]

0.0

0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0

(2.5V to 5.5V)

Supply voltag e : VM [V]

Fig.9 Output ON-Resistance

-

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4/17

2009.06 - Rev.A

BD6373GW, BD6873KN, BD6753KV

L

A

A3A

A

L

L

A

A

●Block Diagram, Pin Arrangement, and Pin Function

VCC

F3

Technical Note

ENABLE12

ENABLE34

INPUT1

INPUT2

INPUT3

INPUT4

INPUT5

BRAKE5

INPUT6

BRAKE6

TSD & UVLO

C2

D2

E3

D3

B3

B4

C5

D4

E4

D5

Logic12

Logic34

F4

GND

BandGap

H bridge

Full ON

H bridge

Full ON

H bridge

Full ON

H bridge

Full ON

H bridge

Full ON

H bridge

Full ON

F2

VM12

F1

E2

OUT1A

OUT1B

E1

D1

OUT2A

OUT2B

C1

PGND12

B1

VM34

2

B2

1

OUT3A

OUT3B

4

OUT4A

6

B5

OUT4B

5

PGND34

F5

VM56

OUT5A

C6

D6

OUT5B

E6

OUT6A

E5

F6

OUT6B

B6

PGND56

1 2 3 4 5 6

A OUT3A VM34 OUT3B OUT4A PGND34 OUT4B

B PGND12 OUT3A INPUT3 INPUT4 OUT4B PGND56

C OUT2B ENABLE12

D OUT2A INPUT1 ENABLE34 BRAKE5 BRAKE6 OUT5B

E OUT1B OUT1A INPUT2 INPUT6 OUT6B OUT6A

F OUT1A VM12 VCC GND VM56 OUT6B

INDEX

POST

INPUT5 OUT5A

OUT3A, OUT4B, OUT1A, and OUT6B, which are 2
function pins, are shorted on printed circuit boards.

Fig.12 BD6373GW Block Diagram

Fig.13 BD6373GW Pin Arrangement (Top View)

UCSP75M2 Package

BD6373GW Pin Function Table

No. Pin Name Function No. Pin Name Function

A1 OUT3A H-bridge output pin ch3 A D1 OUT2A H-bridge output pin ch2 A
A2 VM34 Motor power supply pin ch3 and ch4 D2 INPUT1 Control input pin ch1 INPUT
A3 OUT3B H-bridge output pin ch3 B D3 ENABLE34 Control input pin ch3 and ch4 ENABLE
A4 OUT4A H-bridge output pin ch4 A D4 BRAKE5 Control input pin ch5 BRAKE
A5 PGND34 Motor ground pin ch3 and ch4 D5 BRAKE6 Control input pin ch6 BRAKE
A6 OUT4B H-bridge output pin ch4 B D6 OUT5B H-bridge output pin ch5 B
B1 PGND12 Motor ground pin ch1 and ch2 E1 OUT1B H-bridge output pin ch1 B
B2 OUT3A H-bridge output pin ch3 A E2 OUT1A H-bridge output pin ch1 A
B3 INPUT3 Control input pin ch3 INPUT E3 INPUT2 Control input pin ch2 INPUT
B4 INPUT4 Control input pin ch4 INPUT E4 INPUT6 Control input pin ch6 INPUT
B5 OUT4B H-bridge output pin ch4 B E5 OUT6B H-bridge output pin ch6 B
B6 PGND56 Motor ground pin ch5 and ch6 E6 OUT6A H-bridge output pin ch6 A
C1 OUT2B H-bridge output pin ch2 B F1 OUT1A H-bridge output pin ch1 A
C2 ENABLE12 Control input pin ch1 and ch2 ENABLE F2 VM12 Motor power supply pin ch1 and ch2
C3 INDEX POST - F3 VCC Power supply pin
C4 - F4 GND Ground pin
C5 INPUT5 Control input pin ch5 F5 VM56 Motor power supply pin ch5 and ch6
C6 OUT5A H-bridge output pin ch5 A F6 OUT6B H-bridge output pin ch6 B

OUT3A, OUT4B, OUT1A, and OUT6B, which are 2 function pins, are shorted on printed circuit boards.

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5/17

2009.06 - Rev.A

BD6373GW, BD6873KN, BD6753KV

Technical Note

PS

38

Power Save

TSD & UVLO

IN1A

47

IN1B

48

IN2A

1

IN2B

2

SEL1

3

Logic12

Logic12

Level Shift

Pre Driver

IN3A

4

IN3B

5

IN4A

8

IN4B

9

SEL2

10

Logic34

Level Shift

Pre Driver

IN5A

11

IN5B

12

SEL3

13

BRK1

14

Logic5

Level Shift

Pre Driver

EN1

36

IN6

37

Logic6

Level Shift

Pre Driver

23 24 25 26

VREF VLIMS VLIMH VLIML

SelectorVREF

VCC

6

BandGap

VM1 41

39

40

45

46

44

17

15

16

21

22

20

34

32

35

33

28

27

31

29

30

OUT1A

OUT1B

OUT2A

OUT2B

PGND1

VM2

OUT3A

OUT3B

OUT4A

OUT4B

PGND2

VM3

OUT5A

OUT5B

PGND3

VM4

OUT6A

OUT6B

RNF

SENSE

36

EN1

VM3

OUT5B

IN6

PS

OUT1A

OUT1B

VM1

N.C.

N.C.

PGND1

OUT2A

OUT2B

IN1A

IN1B

48

PGND3

BD6873KN

IN2A

IN2B

SEL1

IN3A

RNF

OUT5A

IN3B

VM4

OUT6B

VCC

SENSE

GND

OUT6A

IN4A

IN4B

SEL2

H bridge

&

&

&

&

Full ON

H bridge

Full ON

H bridge

Full ON

H bridge

Full ON

H bridge

Full ON

H bridge

Const. Current

7

GND

Fig.14 BD6873KN Block Diagram Fig.15 BD6873KN Pin Arrangement (Top View)

UQFN48 Package

BD6873KN Pin Function Table

No. Pin name Function No. Pin name Function

1 IN2A Control input pin ch2 A 25 VLIML Output current setting pin 2 ch6
2 IN2B Control input pin ch2 B 26 VLIMS Output current selection pin ch6
3 SEL1 Input mode selection pin ch1 and ch2 27 OUT6A H-bridge output pin ch6 A
4 IN3A Control input pin ch3 A 28 VM4 Motor power supply pin ch6
5 IN3B Control input pin ch3 B 29 RNF Resistance connection pin for output current detection ch6
6 VCC Power supply pin 30 SENSE Output current detection pin ch6
7 GND Ground pin 31 OUT6B H-bridge output pin ch6 B
8 IN4A Control input pin ch4 A 32 OUT5A H-bridge output pin ch5 A
9 IN4B Control input pin ch4 B 33 PGND3 Motor ground pin ch5

10 SEL2 Input mode selection pin ch3 and ch4 34 VM3 Motor power supply pin ch5

11 IN5A Control input pin ch5 A 35 OUT5B H-bridge output pin ch5 B
12 IN5B Control input pin ch5 B 36 EN1 Control input pin ch6 ENABLE
13 SEL3 Input mode selection pin ch5 37 IN6 Control input pin ch6 INPUT
14 BRK1 Control input pin ch5 BRAKE 38 PS Power-saving pin
15 OUT3A H-bridge output pin ch3 A 39 OUT1A H-bridge output pin ch1 A
16 OUT3B H-bridge output pin ch3 B 40 OUT1B H-bridge output pin ch1 B
17 VM2 Motor power supply pin ch3 and ch4 41 VM1 Motor power supply pin ch1 and ch2
18 N.C. - 42 N.C. ­19 N.C. - 43 N.C. ­20 PGND2 Motor ground pin ch3 and ch4 44 PGND1 Motor ground pin ch1 and ch2
21 OUT4A H-bridge output pin ch4 A 45 OUT2A H-bridge output pin ch2 A
22 OUT4B H-bridge output pin ch4 B 46 OUT2B H-bridge output pin ch2 B
23 VREF Reference voltage output pin 47 IN1A Control input pin ch1 A
24 VLIMH Output current setting pin 1 ch6 48 IN1B Control input pin ch1 B

VLIMS

IN5A

VLIML

VLIMH

VREF

OUT4B

OUT4A

PGND2

N.C.

N.C.

VM2

OUT3B

OUT3A

BRK1

SEL3

IN5B

12

24

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2009.06 - Rev.A