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2009.06 - Rev.A

© 2009 ROHM Co., Ltd. All rights reserved.

SystemLensDriverSeriesforDigitalStillCameras/Single-lensReflexCameras

6ch System Lens Drivers

for Digital Still Cameras /

Single-lens Reflex Cameras

BD6373GW,BD6873KN,BD6753KV

●

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.

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Features

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

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.

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Absolute Maximum Ratings

Parameter

Symbol

Limit

Unit

BD6373GW

BD6873KN

BD6753KV

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

1

2

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

4

4

4

mA/ch

※

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.

No.09014EAT02