LB1836MEVB

Ordering number : EN3947F LB1836M Monolithic Digital IC Low-Saturation Bidirectional Motor Driver for Low-Voltage Drive http://onsemi.com Overview The LB1836M is a low-saturation two-channel bidirectional motor driver IC for use in low-voltage applications. The LB1836M is a bipolar stepper-motor driver IC that is ideal for use in printers, FDDs, cameras and other portable devices. Features • Low voltage operation (2.5V min) • Low saturation voltage (upper transistor + lower transistor residual voltage ; 0.40V typ at 400mA). • Parallel connection (Upper transistor + lower transistor residual voltage ; 0.5V typ at 800mA). • Separate logic power supply and motor power supply • Brake function • Spark killer diodes built in • Thermal shutdown circuit built in • Compact package (14-pin MFP) Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Maximum supply voltage Output supply voltage Conditions VS max -0.3 to +10.5 V VS + VSF V VIN GND pin flow-out current IGND Allowable power dissipation Unit -0.3 to +10.5 VOUT Input supply voltage Ratings VCC max Pd max Per channel * Mounted on a board. V -0.3 to +10 V 1.0 A 800 mW Operating temperature Topr -40 to +85 °C Storage temperature Tstg -55 to +150 °C 3 * Mounted on a substrate: 30×30×1.5mm , glass epoxy board. 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. Semiconductor Components Industries, LLC, 2013 31110 SY/82207 MS/71807 MS 20070709-S00001/70407 MS PC/21097HA/D2293/O0693 No.3947-1/6 June, 2013 LB1836M Allowable Operating Ranges at Ta = 25°C Parameter Symbol Supply voltage Conditions Ratings Unit VCC 2.5 to 9.0 VS 1.8 to 9.0 V V Input “H”-level voltage VIH 1.8 to 9.0 V Input “L”-level voltage VIL -0.3 to +0.7 V Electrical Characteristics at Ta = 25°C, VCC = VS = 3V Parameter Symbol Ratings Conditions min Supply current typ Unit max ICC0 VIN1, 2, 3, 4 = 0V, ICC + IS 0.1 10 μA ICC1 VIN1 = 3V, VIN2, 3, 4 = 0V, ICC + IS 14 20 mA ICC2 VIN1, 2 = 3V, VIN3, 4 = 0V, ICC + IS 22 35 mA Output saturation voltage VOUT1 IOUT = 200mA 0.20 0.28 V (upper + lower) VOUT2 IOUT = 400mA 0.40 0.60 V VOUT3 IOUT = 400mA, Parallel connection 0.25 0.35 V VOUT4 IOUT = 800mA, Parallel connection 0.50 0.70 V 80 μA Output sustain voltage VO (SUS) Input current IOUT = 400mA IIN 9 V VIN = 2V, VCC = 6V Spark killer diode Reverse current IS (leak) VCC1, 2 = 9V 30 μA Forward voltage VSF IOUT = 400mA 1.7 V Package Dimensions unit : mm (typ) 3111A Pd max -- Ta Allowable power dissipation, Pd max -- mW 1000 8.0 14 0.63 4.4 6.4 8 1 1.7MAX 7 1.0 0.35 0.15 0.1 (1.5) (1.0) SANYO : MFP14S(225mil) Specified board : 30×30×1.5mm3 glass epoxy 800 600 420 400 200 0 ñ 40 ñ 20 0 20 40 60 8085 100 Ambient temperature, Ta -- °C Pin Assignment GND 14 IN3 13 OUT3 12 VS2 11 OUT4 10 IN4 9 Vcont 8 LB1836M 1 VCC 2 IN1 3 OUT1 4 VS1 5 OUT2 6 IN2 7 GND Top view Note) Ground both GND pins. No.3947-2/6 LB1836M Block Diagram VCC VS2 VS1 10μF IN1 Controller OUT1 M OUT2 IN2 Thermal shutdown OUT3 Controller IN3 M OUT4 IN4 GND GND Truth Table IN1/3 IN2/4 OUT1/3 OUT2/4 Mode H L H L Forward L H L H Reverse H H L L Brake L L OFF OFF Standby No.3947-3/6 LB1836M Design Notes If large current flows on the power supply (VS) line and the GND line, then in some applications and layouts, misoperation due to line oscillation may result. The modes during which large current flows are as follows : • Motor surge current when the DC motor starts up or when it shifts rotation directions (forward ↔ reverse). • Passthrough current generated within the IC when shifting rotation directions (forward ↔ reverse) or when shifting from forward/reverse rotation to braking, or vice versa. The following points should be kept in mind regarding the pattern layout : • Keep the wiring lines thick and short in order to reduce wiring inductance between the power supply (VS) and GND. • Insert a passthrough capacitor near the IC. (Maximum effect is obtained by inserting the passthrough capacitor between VS and the pin 7 GND at the closest distance possible. • If the CPU and the LB1836M are mounted on separate boards and the difference between the ground potential of each board is large, install resistors of about 10kΩ in series between the CPU and the LB1836M inputs. Vcont pin VCC VS OUT IN 300Ω M ID VZ OUT ID = VZ r (= constant) Vcont As shown in the above diagram, the Vcont pin outputs the voltage of the band gap Zener VZ + VF (=1.93V). In normal use, this pin is left open. The drive current ID is varied by the Vcont voltage. However, because the band gap Zener is shared, it functions as a bridge. No.3947-4/6 LB1836M VO (sat) – IO IIN – Ta 110 VCC = VS = IN = 3V 100 0.8 Input current, IIN – μA Output saturation voltage, VO (sat) – V 1.0 0.6 0.4 0.2 90 IN 1 IN 2 80 70 0 0 100 200 300 400 500 0 – 40 600 – 20 0 VO (sat) – Ta IO = 200mA 0.1 0 – 40 – 20 0 20 40 60 80 100 120 160 l 0.6 0.4 l tota on cti nne l co alle Par 0.2 100 200 300 400 500 600 700 800 900 Output current, IO – mA IS – Ta ICC – Ta 6 VCC = VS = IN = 3V VCC = VS = IN = 3V 5 Current drain, ICC – mA Current drain, IS – mA 140 0.8 0 0 140 20 Bre 16 ak 12 Forwar d Revers e 8 4 4 Brea k 3 Forward Reverse 2 1 0 – 40 – 20 0 20 40 60 80 100 120 140 0 – 40 – 20 160 0 Ambient temperature, Ta – °C 20 40 60 80 100 120 140 160 Ambient temperature, Ta – °C IIN – VIN 400 IN1 IN2 IN3 IN4 300 200 100 ICC – VCC 28 VCC = VS = 3V VS = IN = 3V 24 Current drain, ICC – mA Input current, IIN – μA 120 VO (sat) – IO 1.0 Ambient temperature, Ta – °C 24 100 ta A = 400m 0.2 0.3 80 to IO 60 h 0.5 0.4 40 1c VCC = VS = IN = 3V VO(sat) = total value Output saturation voltage, VO (sat) – V Output saturation voltage, VO (sat) – V 0.6 20 Ambient temperature, Ta – °C Output current, IO – mA k ea Br 20 16 12 se ever rd/R a Forw 8 4 Standby 0 0 0 1 2 3 4 5 6 7 Input voltage, VIN – V 8 9 10 0 1 2 3 4 5 6 7 8 9 10 11 Supply voltage, VCC – V No.3947-5/6 LB1836M IS – VS 24 VCC = IN = 3V Break Current drain, IS – mA 20 16 12 Forward/Reverse 8 4 Standby 0 0 1 2 3 4 5 6 7 8 9 10 11 Supply voltage, VS – V ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). 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