SANYO LB1695 Datasheet

Overview

The LB1695 is a three-phase brushless motor driver IC
that is optimal for DC fan motor drive in home appliances
such as on-demand water heaters.

Features

• Three-phase brushless motor drive

• 45-V voltage handling capacity, 2-A output current

• Current limiter circuit

• Low-voltage protection circuit

• Thermal shutdown protection circuit

• Hall amplifiers with hysteresis characteristics

• FG output function

Package Dimensions

unit: mm

3196-DIP30SD

Monolithic Digital IC

Ordering number : EN5678

63097HA(OT) No. 5678-1/7

SANYO: DIP30SD

[LB1695]

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

Three-Phase Brushless Motor Driver

LB1695

Parameter Symbol Conditions Ratings Unit

Supply voltage

V

CC

10 V

V

M

45 V

Output current I

O

2.0 A

Allowable power dissipation Pd max

Mounted on a printed circuit board (114.3

× 76.2 × 1.6 mm

3

2.5 W

glass-epoxy board)
Operating temperature Topr –20 to +100 °C
Storage temperature Tstg –55 to +150 °C

Specifications

Absolute Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Power-supply voltage range

V

CC

4.5 to 5.5 V

V

M

5 to 42 V

Maximum power-supply slew rate at power on

∆V

CC

/∆t At VCC= V

LVSD

(OFF)* No more than 0.04 V/µs

∆V

M

/∆t At VM= 0 V* No more than 0.16 V/µs

Note: *These items are stipulated because output through currents can occur if the speed with which the power-supply voltage rises is too fast when power is

first applied.

Allowable Operating Ranges at Ta = 25°C

With a 20% wiring density on
a glass-epoxy board

114.3 × 76.2 × 1.6 mm

3

Ambient temperature, Ta – °C

Allowable power dissipation, Pdmax – W

No. 5678-2/7

LB1695

Parameter Symbol Conditions

Ratings

Unit

min typ max

Current drain I

CC

Forward rotation 13 19 mA

Output saturation voltage V

O

(sat)1 IO= 0.5 A, VO(sink) + VO(source) 1.8 2.4 V

V

O

(sat)2 IO= 1.0 A, VO(sink) + VO(source) 2.1 2.8 V

Output leakage current I

O

leak 100 µA

[Hall Amplifier]

Input bias current I

HB

1 4 µA

Common-mode input voltage range V

ICM

1.5 3.2 V

Hysteresis ∆V

IN

21 30 37 mV

Input voltage (low → high) V

SLH

5 15 25 mV

Input voltage (high → low) V

SHL

–25 –15 –5 mV

[FG Pin] (Speed pulse output)

Output low-level voltage V

FGLIFG

= 5 mA 0.4 V

Pull-up resistance R

FG

7.5 10.0 12.5 kΩ

[Forward/Reverse Operation]

Forward V

FR1

0 0.8 V

Reverse V

FR2

4.2 5.0 V

[Current Limiter Operation]

Limiter V

RF

0.42 0.5 0.6 V

[Thermal Shutdown Operation]

Operating temperature TSD * 150 180 °C
Hysteresis ∆TSD * 40 °C

[Low-Voltage Protection Operation]

Operating voltage V

LVSD

3.5 3.8 4.1 V

Release voltage V

LVSD(OFF)

4.3 4.5 V

Hysteresis ∆V

LVSD

0.4 0.5 0.6 V

[Pin C]

Charge current I

CL

R = 33 kΩ 30 40 50 µA

Discharge current I

CH

R = 33 kΩ 90 120 150 µA

Charge start voltage V

CL

R = 33 kΩ 0.3 0.4 0.5 V

Discharge start voltage V

CH

R = 33 kΩ 1.5 2.0 2.5 V

Output current ignored time t

sm

R = 33 kΩ, C = 4700 pF 58 68 78 µs

Output off time t

so

R = 33 kΩ, C = 4700 pF 164 193 222 µs

Electrical Characteristics at Ta = 25°C, VCC= 5 V, VM= 30 V

Note: *The items marked with an asterisk are design target values and are not tested.

Pin Assignment

No. 5678-3/7

LB1695

Truth Table

F/R

Forward (low): 0.0 to 0.8 V

Reverse (high): 4.2 to 5.0 V

FG Output

Input Forward/reverse control Output FG output

IN1 IN2 IN3 F/R Source → sink FG1 FG2

1 H L H

L OUT2 → OUT1

L L

H OUT1 →OUT2

2 H L L

L OUT3 → OUT1

L H

H OUT1 →OUT3

3 H H L

L OUT3 → OUT2

L L

H OUT2 →OUT3

4 L H L

L OUT1 → OUT2

H H

H OUT2 →OUT1

5 L H H

L OUT1 → OUT3

H L

H OUT3 →OUT1

6 L L H

L OUT2 → OUT3

H H

H OUT3 →OUT2

Pin Functions

Pin No. Pin Pin voltage(V) Pin function Equivalent circuit

2
30
28

25

26

OUT1
OUT2
OUT3

V

M

RF

• Output pin 1

• Output pin 2

• Output pin 3

• Power supply pin that provides the
output

• Output current detection
Connect the resistor Rf between this pin
and ground.

• The current limiter limits the output
current to the value set by V

RF

/Rf

(current limiter operation).

5

6

C

R

• The capacitor connected to this pin
determines both the time the output is
turned off when the current limiter
operates and the time the output current
is ignored.

• The resistor connected to this pin
determines the charge current for the pin
C capacitor.

Continued on next page.

FG1

FG2