SANYO LB1823 Datasheet

Monolithic Digital IC

Ordering number : EN4263B

13097HA(OT)/83095HA(OT) No. 4263-1/11

LB1823

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

Power Brushless Motor Predriver IC

for OA Applications

Overview

The LB1823 is a predriver IC developed for driving
power brushless motors in office automation applications.
A motor driver circuit with the desired output power
(current and voltage) can be constructed by attaching
either a driver array or discrete components at the output.
The LB1823 output supports direct PWM drive and thus
allows the implementation of low-loss drive circuits.
Additionally, the LB1823 includes several associated
circuits, such as a speed control circuit, and FG amplifier,
and an integrating amplifier, on chip.

Features

• Direct PWM drive output

• Crystal oscillator circuit

• Speed discriminator plus PLL speed control system

• Lock detector output

• Forward/reverse switching circuit

• Braking circuit (short braking technique)

• Start/stop switching circuit

• Over current limiter circuit (OCL)

• Thermal shutdown circuit (TSD)

• Built-in FG amplifier, integrating amplifier

• Shunt regulator output (7.0 V)

Package Dimensions

unit: mm

3196-DIP30SD

SANYO: DIP30SD

[LB1823]

Specifications

Absolute Maximum Ratings at Ta = 25°C

Allowable Operating Ranges at Ta = 25°C

Electrical Characteristics at Ta = 25°C, VCC= 6.3 V

No. 4263-2/11

LB1823

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

CC

max 9 V

Maximum input current I

REG

V

REG

pin 10 mA

Output current I

O

UL, VL and WL outputs 30 mA
Allowable power dissipation Pd max 1 W
Operating temperature Topr –20 to +80 °C
Storage temperature Tstg –55 to +150 °C

Parameter Symbol Conditions Ratings Unit

Input current range I

REG

V

REG

pin (7 V) 1 to 5 mA

FG Schmitt output applied voltage V

FGS

0 to 8 V

FG Schmitt output current I

FGS

0 to 5 mA

Lock detector output current I

LD

0 to 20 mA

Supply voltage V

CC

4.5 to 7 V

Parameter Symbol Conditions min typ max Unit

Current drain

I

CC

1 33 50 mA

I

CC

2 When stopped 15 25 mA

Output saturation voltage V

O

sat UL, VL and WL outputs: IO= 20 mA 0.2 0.7 V

Output current I

O

UH, VH and WH outputs: V

OUT

= 1.4 V 8 12 16 mA

Output leakage current I

O

leak UL, VL and WL outputs 100 µA

Output off voltage V

O

off UH, VH and WH outputs 0.5 V
[Hall Amplifier]
Input bias current I

HB

–4 –1 µA

Common-mode input

V

ICM

1.5 4.4 V

voltage range
Hall input sensitivity ∆V

IN

60 mVp-p

Hysteresis ∆V

IN

17 32 60 mV

Input voltage low to high V

SLH

16 mV

Input voltage high to low V

SHL

–16 mV
[Oscillator]
Output high level voltage V

OH (CR)

3.1 3.4 3.7 V

Output low level voltage V

OL (CR)

1.2 1.5 1.8 V

Oscillator frequency f

(CR)

R = 56 kΩ, C = 1500 pF 20 kHz

Amplitude V

(CR)

2.0 Vp-p
[Current Limiter Operation]
Limiter V

RF

0.4 0.5 0.6 V
[Thermal Shutdown Operation]
Thermal shutdown operating

TSD Design target 150 180 °C

temperature
Hysteresis ∆TSD Design target 30 °C
[V

REG

Pin]

V

REG

pin voltage V

REG

6.6 7.0 7.3 V

Continued on next page.

Continued from preceding page.

No. 4263-3/11

LB1823

Parameter Symbol Conditions min typ max Unit
[FG Amplifier]
Input offset voltage V

IO (FG)

–10 +10 mV

Input bias current I

B (FG)

–1 +1 µA

Output high level voltage V

OH (FG)

4.8 5.3 V

Output low level voltage V

OL (FG)

1 1.5 V

FG input sensitivity Gain: 100

× 3 mV

Schmitt amplitude for the

100 180 250 mV

next stage
Operating frequency range 2 kHz
Open-loop gain f

(FG)

= 2 kHz 45 51 dB
[FGS Output]
Output saturation voltage V

O (FGS)IO (FGS)

= 2 mA 0.1 0.5 V

Output leakage current I

L (FGS)VO

= V

CC

10 µA
[Speed Discriminator]
Output high level voltage V

OH (D)

5.3 5.6 V

Output low level voltage V

OL (D)

0.4 1.1 V
[PLL Output]
Output high level voltage V

OH (P)

4.05 4.35 4.65 V

Output low level voltage V

OL (P)

1.85 2.15 2.45 V
Number of counts 512
[Lock Detector]
Output low level voltage V

OL (LD)ILD

= 10 mA 0.1 0.5 V

Output leakage current I

L (LD)

VO= V

CC

10 µA
Lock range ±6.25 %
[Integrator]
Input bias current I

B (INT)

–0.4 +0.4 µA

Output high level voltage V

OH (INT)

5.0 5.6 V

Output low level voltage V

OL (INT)

0.8 1.2 V
Open-loop gain 60 dB
Gain bandwidth product 1.6 MHz
Reference voltage –5% V

CC

/2 5% V
[Crystal Oscillator]
Crystal oscillator frequency f

OSC

Crystal oscillator 1 10 MHz

External input frequency f

CLK

External signal input 1 10.2 MHz
[S/S Pin]
Input high level voltage V

IH (S/S)

4.0 3.05 V

Input low level voltage V

IL (S/S)

2.60 1.5 V

Hysteresis ∆V

IN

0.45 V

Pull-up resistor R

U (S/S)

63 kΩ
[F/R Pin]
Input high level voltage V

IH (F/R)

4.0 3.05 V

Input low level voltage V

IL (F/R)

2.60 1.5 V

Hysteresis ∆V

IN

0.45 V

Pull-down resistor R

D (F/R)

30 50 70 kΩ
[BR Pin]
Input high level voltage V

IH (BR)

4.0 3.05 V

Input low level voltage V

IL (BR)

2.60 1.5 V

Hysteresis ∆V

IN

0.45 V

Pull-down resistor R

D (BR)

30 50 70 kΩ

Pin Assignment

Block Diagram

No. 4263-4/11

LB1823