Sanyo LB1848M Specifications

Overview

The LB1846M and LB1848M are 2-channel low-voltage,
low saturation voltage type bidirectional motor driver ICs
that are optimal for use as 2-phase stepping motor drivers
in printers, floppy disk drives, and cameras and other
portable equipment. The output circuits are of the bipolar
type, with pnp transistors in the upper side and npn
transistors in the lower side, and they achieve low
saturation output and low power characteristics despite
being provided in a miniature package.

Both of these IC products can directly control a motor
from signals from a microcontroller. The LB1846M is
optimal for 1-2 phase excitation drive for 2-phase stepping
motors using 4-input logic (IN1, IN2, IN3, and IN4) and
the LB1848M is optimal for 2-phase excitation drive for
2-phase stepping motors using 3-input logic (ENA, IN1,
and IN2).

Another point is that these ICs include built-in thermal
shutdown circuits so that IC scorching or burning is
prevented in advance even if the IC outputs are shorted.
Additionally, the MFP-10S miniature package used
supports reduced-space mounting.

Features

• Optimal for 1-2 phase excitation drive for 2-phase
stepping motors (LB1846M)

• Optimal for 2 phase excitation drive for 2-phase
stepping motors (LB1848M)

• Low saturation voltage. VO(sat) = 0.55 V typical at IO=
400 mA

• Standby current: zero

• Thermal shutdown circuit

• Miniature package: MFP-10S (6.5 × 5.1 mm2)

• Through-current prevention circuit (LB1848M only)

• “Soft off” function that reduces power supply line noise
when switching from drive to standby modes. (Requires
the use of one external capacitor.) (LB1848M only)

• No limitations on the magnitude relationship between
the power supply voltage (VCC) and the input voltage
(VIN)

Package Dimensions

unit: mm

3086A-MFP10S

Monolithic Digital IC

Ordering number : ENN5339A

73099TH (OT)/O3096HA (OT) No. 5339-1/8

SANYO Electric Co.,Ltd. Semiconductor Company

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

Low-Voltage/Low Saturation Voltage Type

Bidirectional Motor Driver

LB1846M, 1848M

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: MFP10S

[LB1846M, 1848M]

10

1

5.1

6

4.4

5

0.55

1.00.35

0.15

1.8max

1.5

0.1

6.4

5.15 0.625

No. 5339-2/8

LB1846M, 1848M

Parameter Symbol Conditions Ratings Unit

Supply voltage V

CC

2.5 to 7.5 V

Input high-level voltage V

IH

2.0 to 7.5 V

Input low-level voltage V

IL

–0.3 to +0.7 V

Allowable Operating Ranges at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

CC

max –0.3 to +8.0 V

Output voltage V

OUT

VCC+ V

SF

V

Input voltage V

IN

–0.3 to +8.0 V

Ground pin outflow current I

GND

Per channel 800 mA

Allowable power dissipation

Pd max1 Independent IC 350 mW

Pd max2 When mounted* 870 mW
Operating temperature Topr –20 to +75 °C
Storage temperature Tstg –40 to +150 °C

Specifications

Absolute Maximum Ratings at Ta = 25°C

Note: *On the specified circuit board (a 114.3 × 76.2 × 1.5-mm3glass-epoxy printed circuit board)

Parameter Symbol Conditions

Ratings

Unit

min typ max

[LB1846M]

Current drain

I

CC

0 IN1, 2, 3, 4 = 0 V 0.1 10 µA

I

CC

1 IN1, 3 = 3 V, IN2, 4 = 0 V 30 40 mA

V

OUT

1

V

IN

= 3 V or 0 V, VCC= 3 to 7.5 V,

0.27 0.4 V

Output saturation voltage

I

OUT

= 200 mA

V

OUT

2

V

IN

= 3 V or 0 V, VCC= 4 to 7.5 V,

0.55 0.8 V

I

OUT

= 400 mA

Input current I

IN

VIN= 5 V 150 200 µA
[Spark Killer Diode]
Reverse current I

S

(leak) 30 µA

Forward voltage V

SFIOUT

= 400 mA 1.7 V

[LB1848M]

Current drain

I

CC

0 ENA = 0 V, VIN= 3 V or 0 V 0.1 10 µA

I

CC

1 ENA = 3 V, VIN= 3 V or 0 V 25 35 mA

V

OUT

1

ENA = 3 V, V

IN

= 3 V or 0 V,

0.27 0.4 V

Output saturation voltage

V

CC

= 3 to 7.5 V, I

OUT

= 200 mA

V

OUT

2

ENA = 3 V, V

IN

= 3 V or 0 V,

0.55 0.8 V

V

CC

= 4 to 7.5 V, I

OUT

= 400 mA

Input current 1 I

IN

VIN= 5 V 75 100 µA
Input current 2 I

ENA

ENA = 5 V 85 110 µA
[Spark Killer Diode]
Reverse current I

S

(leak) 30 µA

Forward voltage V

SFIOUT

= 400 mA 1.7 V

Electrical Characteristics at Ta = 25°C, VCC= 5.0 V

Note: The thermal shutdown circuit function values are design guarantees, and are not tested.

No. 5339-3/8

LB1846M, 1848M

Pin Assignments