Datasheet LB11988 Datasheet (SANYO)

Ordering number :ENN6211

N0999RM (OT) No. 6211-1/6

Functions

• Three-phase full-wave current linear drive

• Built-in current limiter circuit

• Built-in saturation prevention circuits in both the upper
and lower sides of the output stage.

• FG amplifier

• Thermal shutdown circuit

Package Dimensions

unit: mm

3007A-DIP18

1

9

18

10

24.2

1.94 2.54

1.20.5

3.25

3.3

3.85max

0.25

7.62

6.4

SANYO: DIP18

[LB11988]

SANYO Electric Co.,Ltd. Semiconductor Company

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

Monolithic Digital IC

LB11988

Refrigerator Fan Motor Driver

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.

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage

V

CC

max 24 V

V

S

max 24 V

Maximum output current I

O max

1.3 A
Allowable power dissipation Pdmax Independent IC 1.13 W
Operating temperature Topr –30 to +75 °C
Storage temperature Tstg –55 to +150 °C

Specifications

Absolute Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Supply voltage

V

S

5 to 22

V

V

CC

7 to 22

Hall input amplitude V

HALL

Between Hall inputs ±30 to ±80 mV 0-P

Allowable Operating Ranges at Ta = 25°C

No. 6211-2/6

LB11988

Electrical Characteristics at Ta = 25°C, VCC= 12 V, VS = 12 V

Parameter Symbol Conditions

Ratings

Unit

min typ max

V

CC

current drain I

CC

RL= 560 Ω (Y) 15 24 mA

[Output]

V

Osat

1

I

O

= 500 mA, Rf = 0.5 Ω, Sink + Source

2.1 2.6 V

Output saturation voltage

(Saturation prevention function included)

V

Osat

2

I

O

= 1.0 A, Rf = 0 Ω, Sink + Source

2.6 3.5 V

(Saturation prevention function included)

Output leakage current I

Oleak

1.0 mA

[Hall Amplifier]

Input offset voltage V

off

(HALL) –6 +6 mV

Input bias current I

b

(HALL) VIN, W

IN

13µA

Common-mode input voltage V

cm

(HALL) 3 V

CC

– 3 V

[FR]

Threshold voltage V

FRTH

48V

Input bias current Ib(FR) –5 µA

[Current Limiter]

LIM pin current limit level I

LIM

Rf = 0.5 Ω,

1A

With the Hall input logic states fixed (U, V, W = high, high, low)

[Saturation]

Saturation prevention circuit

V

Osat

(DET)

R

L

= 560 Ω (Y), Rf = 0.5 Ω,

0.28 V

lower side voltage setting The voltage between each lower output and the corresponding Rf.

[FG Amplifier]

Upper side output saturation voltage

V

satu

(SH) 11.8 V

Lower side output saturation voltage

V

satd

(SH) 0.3 V
Hysteresis Vhys 23 mV
TSD operating temperature T-TSD Design target value* 170 °C

Note *: Items shown to be design target values in the conditions column are not measured.

Pin Assignment

14

12

10

11

13

9

1

2

3

4

5

6

7

8

NC

W

OUT

LB11988

15

16

17

18

FGOUT

FR

GND

FC

U

IN+

U

IN–

V

IN+

VIN–

W

IN+

W

IN–

V

CC

VS

RF

NC

U

OUT

VOUT

Top view

No. 6211-3/6

LB11988

Truth Table and Control Functions

Source → sink

Hall input

FR

UVW

1

V → W

HHL

H

W → VL

2

U → W

HLL

H

W → UL

3

U → V

HLH

H

V → UL

4

W → V

LLH

H

V → WL

5

W → U

LHH

H

U → WL

6

V → U

LHL

H

U → VL

Note: For the Hall inputs, the input high state is defined to be the

state where the (+) input is higher than the corresponding
(–) input by 0.01 V or higher, and the input low state is
defined to be the state where the (+) input is lower than
the corresponding (–) input by 0.01 V or higher.

Note: Since this drive technique is a 180° current application

scheme, the phases other than the sink and the source
phases will not turn off.

Pin Functions

Pin No. Pin Function

5 GND

Ground for circuits other than the output transistors.
Note that the Rf pin will be at the lowest potential of the output transistors.

3 FG-OUT This is the FG amplifier output pin. Internally, it is a resistive load.
4 FR Forward/reverse switching pin
6 FC Corrects the frequency characteristics of the saturation prevention circuit loop and current limiter circuit.

7, 8 U

IN

+, UIN– U-phase Hall input. Logic high refers to the state where IN+ > IN–.

9, 10 V

IN

+, VIN– V-phase Hall input. Logic high refers to the state where IN+ > IN–.

11, 12 W

IN

+, WIN– W-phase Hall input. Logic high refers to the state where IN+ > IN–.

13 V

CC

Power supply provided to all IC internal circuits other than the output block.
This voltage must be stabilized so that ripple and noise do not enter the IC.

14 V

S

Output block power supply

15 Rf

17 U

OUT

U-phase Hall output

18 V

OUT

V-phase Hall output (These pins include internal spark killer diodes.)

1W

OUT

W-phase Hall output

Used for output current detection. The current limiter circuit operates using the resistor (Rf) connected between
this pin and ground.
Note that the lower side saturation prevention circuit operates according to the voltage that appears on this pin.
Since the over-saturation level is set by this voltage, the response of the lower side saturation prevention circuit
may be degraded in the large current region if the value of Rf is made extremely small.

Note: The "H" state for FR is defined as a voltage of 8 V or

higher, and the "L" state for FR is defined as a voltage of
4 V or lower. (When V

CC

= 12 V.)

No. 6211-4/6

LB11988

Equivalent Circuit Diagrams

Pin Equivalent circuit diagrams

UIN(+)
U

IN

(–)

V

IN

(+)

V

IN

(–)

W

IN

(+)

W

IN

(–)

200 Ω

30 kΩ

RF

Vs

Vcc

150 µA

10 kΩ

FC

Vcc

10 kΩ

5 kΩ

300 Ω

FG

OUT

Vcc Vcc

U

OUT

V

OUT

W

OUT

RF

V

S

FC

FG

OUT

FR

200 Ω

FR

Vcc

200 µA

1/2 Vcc

Input (–)Input (+)

Lower side oversaturation
prevention circuit input block.

Output

200 Ω

200 Ω

100 µA

No. 6211-5/6

LB11988

FC

UOUT

VOUT

WOUT

TSD

LIMREF

Bandgap 1.2 V

UIN

UIN

VIN

VIN

WIN–

W

IN+

V

CC

VS

UIN

–

GND

FGOUT

5 K

RF

0.1 µ

0.1 µ × 3

0.5

VCC

UIN+

VCC

13.6 k

30 k

FR

Block Diagram

Hall input synthesis block (linear matrix)

Schmitt amplifier

Synthesized output logarithmic compression

block

Reference

voltage

Current limiter

Logarithmic conversion and differential

distribution

Differential

distribution

Feedback

amplifier

Upper side saturation

prevention control

Drive distribution circuit and

lower side saturation

prevention control

FG amplifier

Unit (capacitance: F, resistance: Ω)

Forward /reverse

switing

+

–

–

+

PS No.6211-6/6

LB11988

This catalog provides information as of November, 1999. Specifications and information herein are
subject to change without notice.

Specifications of any and all SANYO 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’s
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer’s products or equipment.

SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.

In the event that any or all SANYO products (including technical data, services) described or contained
herein are controlled under any of applicable local export control laws and regulations, such products must
not be exported without obtaining the export license from the authorities concerned in accordance with the
above law.

No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co., Ltd.

Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the “Delivery Specification”
for the SANYO product that you intend to use.

Information (including circuit diagrams and circuit parameters) herein is for example only; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.