53012 SY 20120522-S00002/41812 SY/32112 SY 20120229-S00010 No.A2036-1/6

http://onsemi.com

Semiconductor Components Industries, LLC, 2013

June, 2013

LB1848MC

Overview

The LB1848MC is 2-channel low-voltage, low saturation voltage type bidirectional motor driver IC that is optimal for

use as 2-phase stepping motor drivers in printers, 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.

The LB1848MC products can directly control a motor from signals from a microcontroller. The LB1848MC 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 IC include built-in thermal shutdown circuits so that IC scorching or burning is prevented in

advance even if the IC output is shorted.

Functions

• Optimal for 2-phase excitation drive for 2-phase stepping motors

• Standby current: Zero

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

• Thermal shutdown circuit

• Through-current prevention circuit

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

• “Soft off” function that reduces power supply line noise when switching from drive to standby modes. (Requires the

use of one external capacitor.)

Specifications

Absolute Maximum Ratings at Ta = 25

°C

Parameter

Symbol

Conditions

Ratings

Unit

Maximum supply voltage

VCC max

-0.3 to +8.0

V

Output voltage

VOUT

VCC + VSF

V

Input voltage

VIN

-0.3 to +8.0

V

Ground pin outflow current

IGND

Per channel

800

mA

Allowable power dissipation

Pd max

When mounted*

820

mW

Operating temperature

Topr

-20 to +85

°C

Storage temperature

Tstg

-40 to +150

°C

*1: When mounted on the specified printed circuit board (114.3mm × 76.2mm × 1.5mm), glass epoxy board

Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time.

Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current,

high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details.

Monolithic Digital IC

Low-Voltage/Low Saturation Voltage Type

Bidirectional Motor Driver

Ordering number : ENA2036B

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating

Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.