LB11948T_07 SANYO [Sanyo Semicon Device], LB11948T_07 Datasheet

LB11948T_07

Manufacturer Part Number

LB11948T_07

Description

PWM Constant Current Control 1-2 Phase Excitation Stepping Motor Driver

Manufacturer

SANYO [Sanyo Semicon Device]

Datasheet

1.LB11948T_07.pdf (13 pages)

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Download datasheet (138Kb)

Ordering number : EN7947B

LB11948T

Overview

Features

Specifications

Absolute Maximum Ratings at Ta = 25°C

Note * : Specified PCB : 114.3×76.1×1.6mm

VS supply voltage

Logic system supply voltage

Peak output current

Continuous output current

Emitter output voltage

Input voltage

Allowable power dissipation

Operating temperature

Storage temperature

The LB11948T is a low saturation voltage output PWM current control bipolar drive stepping motor driver. It is optimal

for use as the driver for the miniature low-voltage stepping motors used in portable electronic equipment such as portable

thermal printers.

• PWM current control (external excitation)

• Simultaneous on state prevention function (through current prevention)

• Thermal shutdown circuit

• Noise canceller function

• Low-power mode control pin

Parameter

"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,

Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to

communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be

intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace

instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety

equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case

of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee

thereof. If you should intend to use our products for applications outside the standard applications of our

customer who is considering such use and/or outside the scope of our intended standard applications, please

consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our

customer shall be solely responsible for the use.

Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate

the performance, characteristics, and functions of the described products in the independent state, and are not

guarantees of the performance, characteristics, and functions of the described products as mounted in the

customer

device, the customer should always evaluate and test devices mounted in the customer

equipment.

s products or equipment. To verify symptoms and states that cannot be evaluated in an independent

I O peak

Pd max

Symbol

I O max

Topg

V CC

Tstg

V IN

Monolithic Digital IC

PWM Constant Current Control 1-2

Phase Excitation Stepping Motor

Driver

tW ≤ 20μS

Mounted on the specified PCB*

D2607 MS PC 20060201-S00001/N2206/D1504TN(OT)/81004TN(OT) No.7947-1/13

Conditions

Ratings

s products or

-0.3 to V CC

-40 to +150

-0.3 to +18

-20 to +85

0.5

0.4

1.0

1.2

Unit

°C

Related parts for LB11948T_07

LB11948T_07 Summary of contents

Page 1

Ordering number : EN7947B LB11948T Overview The LB11948T is a low saturation voltage output PWM current control bipolar drive stepping motor driver optimal for use as the driver for the miniature low-voltage stepping motors used in portable electronic ...

Page 2

Recommended Operating Conditions 25°C Parameter Symbol VS supply voltage V CC supply voltage V CC Reference voltage VREF Electrical Characteristics Ta = 25° 5V, VREF = 0.3V Parameter Symbol [Output Block] VS ...

Page 3

Package Dimensions unit : mm (typ) 3259 9. 0.65 0.22 (0.33) SANYO : TSSOP30(275mil) Pin Assignment LB11948T 1.4 1.2 1.0 0.8 0.6 0.15 0.4 0.2 0 – max -- Ta Specified PCB : 114.3×76.1×1.6mm ...

Page 4

Pin Functions Pin No. Pin Name OUT1 - 1 Output 2 OUT1 Output 3 NC Unused 4 NC Unused 5 D-GND Lower side internal diode anode connection 6 E1 Constant current control sensing The motor current is set by the ...

Page 5

Block Diagram V CC ENABLE1 PHASE1 ENABLE2 PHASE2 ST Reference voltage Thermal S-GND shutdown circuit 1VREG LB11948T Blanking time - + Blanking time - + OSC V CC VREF2 VREF1 CR 56kΩ VS1 Stepping Motor OUT1 OUT1- E1 VS2 OUT2 ...

Page 6

Sample Application Circuit 1Ω 8V 10μF 10μF 680pF Logic level input Logic level input PHASE1 PHASE2 LB11948T OUT1 - OUT2 - 1 M OUT1 OUT2 D-GND2 D-GND VS2 VS1 ...

Page 7

Drive Sequence Table 2 Phase Excitation Drive Sequence No. PHASE1 ENABLE1 No. PHASE1 ENABLE1 1-2 Phase ...

Page 8

Phase Excitation Drive Sequence Clockwise drive 0 PHASE1 PHASE2 ENABLE1 ENABLE2 OUT1 OUT1 - OUT2 OUT2 - Counterclockwise drive 0 PHASE1 PHASE2 ENABLE1 ENABLE2 OUT1 OUT1 - OUT2 OUT2 - LB11948T ...

Page 9

Phase Excitation Drive Sequence Clockwise drive 0 PHASE1 PHASE2 ENABLE1 ENABLE2 OUT1 OUT1 - OUT2 OUT2 - : Output off state Clockwise drive 0 PHASE1 PHASE2 ENABLE1 ENABLE2 OUT1 OUT1 - OUT2 OUT2 - : Output off state LB11948T ...

Page 10

Switching Operation Timing Chart OUTA OUTA LB11948T tn tn: The noise canceller operating time Spike noise No.7947-10/13 ...

Page 11

Usage Notes (1) Simple Formulas for Determining Resister and Capacitor Values The formula for setting the rising time (T1) and the falling time (T2) for the RC oscillator are shown below. (Refer to Fig Formulas Oscillation period ...

Page 12

Constant current settings The reference voltages of the VREF1 and VREF2 pins can be set by dividing the resistance voltage from the 1V regulator output pin (1VREG). The output current is set using the VREF reference voltage applied to ...

Page 13

SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all ...

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