SANYO LB1947 Datasheet

Ordering number : ENN*6192

Preliminary

LB1947

Monolithic Digital IC

LB1947

PWM Current Control Type DC Motor Driver

Features

• PWM current control (fixed OFF time)

• Selectable current decay pattern (FAST, SLOW, and MIX DECAY modes)

• Simultaneous ON prevention function (feedthrough current prevention)

Package Dimensions

unit: mm

3249-SIP13HJ

[LB1947]

25.6

C0.7

3.4

(10.0)

2.0

2.4

• Built-in thermal shutdown circuit

• Built-in noise canceler

(13.9)

16.4max

12.2

(12.8)

3.5

2.0min

(0.8)

2.0

0.5

1.15

Specifications

Absolute Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit Maximum motor supply voltage VBB max 50 V Output peak current I OPEAK tw ≤ 20 µs 2.25 A Output continuous current I O max 2.0 A Logic supply voltage VCC max 7.0 V Logic input voltage range VIN –0.3 to VCC V Emitter output voltage VE max 1.1 V Reference voltage VREF –0.3 to VCC V Operating temperature Topr –20 to +85 °C Storage temperature Tstg –55 to +150 °C Allowable power dissipation Pd max Ta = 25°C 1.6 W

SANYO : SIP13HJ

1.2

0.4

3.0min

Allowable Operating Ranges at Ta = 25°C

Parameter Symbol Conditions Ratings Unit Motor supply voltage VBB 10 to 45 V Logic supply voltage VCC 4.75 to 5.25 V Reference voltage VREF 0 to (Vcc–2) V

Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications.

SANYO 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 SANYO products described or contained herein.

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

80699RM(KI)

No. 6192-1/7

LB1947

Electrical Characteristics at Ta = 25°C, VBB = 42V, VCC = 5V, VREF = 1.0V

Parameter Symbol Conditions

Output stage supply current I BB ON No-load state 0.4 0.6 1.0 mA

I BB BR No-load state 0.2 0.4 0.8 mA

I BB OFF No-load state 0.2 0.4 0.8 mA

I BBwt No-load state 0.1 mA

Output saturation voltage 1 V osat 1 Io = +1.0A sink 1.2 1.5 V

2 V osat 2 Io = +2.0A sink 1.6 1.9 V 3 V osat 3 Io = –1.0A source 1.8 2.2 V

Output Block

4 V osat 4 Io = –2.0A source 2.1 2.4 V

Output leak current I o1(leak) VO = VBB sink 50 µA

I o2(leak) VO = 0V source –50 µA Output sustain voltage V SUS L = 3.9 mH Io = 2.0A *1 50 V Logic supply current I CC ON IN1 : High, IN2 : Low, ST = High 11 16 21 mA

I CC BR IN1 : Low, IN2 : High, ST = High 11 16 21 mA

I CC OFF IN1 : Low, IN2 : Low, ST = High 11 16 21 mA

I CCwt ST : Low 1.0 2 3.0 mA

Input voltage V INH 2V

V INL 0.8 V

Input current I INH V IN = 5V 60 90 120 µA

I INL V IN = 0.8V 6 10 13 µA Sensing voltage VE 0 1.1 V Sensing voltage 25H VEH25 VI = High, V Sensing voltage 25L VEL25 VI = Low, V Sensing voltage 10H VEH25 VI = High, V Sensing voltage 10L VEL25 VI = Low, V

Logic Block

Sensing voltage 05H VEH25 VI = High, V Sensing voltage 05L VEL25 VI = Low, V

= 2.5V 0.970 1.0 1.030 V

REF

= 2.5V 0.483 0.5 0.513 V

REF

= 1.0V 0.385 0.4 0.410 V

REF

= 1.0V 0.190 0.2 0.210 V

REF

= 0.5V 0.190 0.2 0.210 V

REF

= 0.5V 0.092 0.1 0.108 V

REF

Reference current I ref Vref = 1.0V –0.5 0.5 µA CR pin current I MD pin voltage V

V V

MD pin current I

MDH MDL

CR = 1.0V –1.56 –1.3 –1.04 mA

CR MDH MDM MDL

Vcc–0.3 V

MD = (Vcc–0.5)V, CR = 1.0V –1.0 1.0 µA MD = 0.4V, CR = 2.0V –5.0 µA

Thermal shutdown temperature T SD 170 °C

*1: Guaranteed design

Ratings

min typ max

Unit

0.3Vcc Vcc–1.0 V

0.4 V

Truth Table

IN 1 IN 2 ST VI MD OUT OUT– Operating mode

H L H H L H L Forward, 2/5 times, FAST H L H H M H L Forward, 2/5 times, MIX H L H H H H L Forward, 2/5 times, SLOW H L H L L H L Forward, 1/5 times, FAST H L H L M H L Forward, 1/5 times, MIX H L H L H H L Forward, 1/5 times, SLOW H H H H L L H Reverse, 2/5 times, FAST H H H H M L H Reverse, 2/5 times, MIX H H H H H L H Reverse, 2/5 times, SLOW H H H L L L H Reverse, 1/5 times, FAST H H H L M L H Reverse, 1/5 times, MIX H H H L H L H Reverse, 1/5 times, SLOW L H H H L L L Brake, 2/5 times, FAST L H H H M L L Brake, 2/5 times, MIX L H H L L L L Brake, 1/5 times, FAST L H H L M L L Brake, 1/5 times, MIX L H H X H L L Brake, no current limiting L L H X X OFF OFF Output OFF XX

Except for MD pin, Low at input OPEN MD M: determined by external voltage

L or OPEN

X X OFF OFF Standby mode (circuit OFF)

No. 6192-2/7

Pin Description

Pin number

1 3 2 4 5 8 9

6 7

Pin name

OUTA–

OUTA

ST IN1 IN2

VBB VCC

VREF

LB1947

Equivalent circuit

Output pin

Sense voltage control pin VI

High : sense voltage is 2/5 of V Low : sense voltage is 1/5 of V

100µA

High : circuit operation ON Low : standby mode

50kΩ

IN1

High : rotation mode

40kΩ

A12583

Low : brake mode

IN2

High : reverse mode

Low : forward mode Motor power supply voltage Logic power supply voltage

Output current setting reference pin Setting range: 0 to (Vcc–2V)

5µA

Pin function

REF REF

11 12

CR MD

GND

3s 1s

300Ω

REF

A12584

Oscillator with self-excitation Current attenuation switching pin

Low : FAST DECAY

High : SLOW DECAY

M : MIX DECAY

M is set by external power supply voltage.

Range : 1.1 to 4.0V Ground pin

No. 6192-3/7

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