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Ordering number: EN3947B
Monolithic Digital IC
LB1836M Low-saturation, Bidirectional Motor Driver for Low-voltage Applications
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.
Package Dimensions
unit : mm
3111-MFP14S
[LB1836M]
Features
. Low voltage operation (2.5 V min) . Low saturation voltage (upper transistor + lower transistor voltage; 0.40 . residual connection V typ at 400 mA). Parallel . . . . .
(Upper transistor + lower transistor residual voltage; 0.5 V typ at 800 mA). 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) SANYO : MFP14S
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Output applied voltage Input applied voltage Ground pin flow-out current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max VS max VOUT VIN IGND Pd max Topr Tstg Per channel * With board Conditions Ratings -0.3 to +10.5 -0.3 to +10.5 VS + VSF -0.3 to +10 1.0 800 -20 to +75 -40 to +125 Unit V V V V A mW C C
*Note: Mounted on 30 x 30 x 1.5 mm3 glass epoxy PCB
Allowable Operating Ranges at Ta = 25C
Parameter Supply voltage Input high-level voltage Input low-level voltage Symbol VCC VS VIH VIL Conditions Ratings 2.5 to 9.0 1.8 to 9.0 1.8 to 9.0 -0.3 to +0.7 Unit V V V V
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21097HA(II)/D2293/O0693(US) No.3947-1/5
LB1836M
Electrical Characteristics at Ta = 25C, VCC = VS= 3 V
Parameter Supply current Symbol ICC0 ICC1 ICC2 VOUT1 VOUT2 VOUT3 VOUT4 VO (sus) IIN Is (leak) VSF Conditions VIN1, 2, 3, 4 = 0 V, ICC + IS VIN1 = 3 V, VIN2, 3, 4 = 0 V, ICC + IS VIN1, 2 = 3 V, VIN3, 4 = 0 V, ICC + IS IOUT = 200 mA IOUT = 400 mA IOUT = 400 mA, parallel connection IOUT = 800 mA, parallel connection IOUT = 400 mA VIN = 2 V, VCC = 6 V VCC1, 2 = 9 V IOUT = 400 mA min typ 0.1 14 22 0.2 0.4 0.25 0.5 max 10 20 35 0.28 0.6 0.35 0.7 80 30 1.7 Unit A mA mA V V V V V A A V
Output saturation voltage (upper + lower) Output sustaining voltage Input current Spark killer diode reverse current Spark killer diode forward voltage
9
Pin Assignment
Note) Both GNDs must be connected. P-GND of OUT2 and OUT4 and S-GND of the control section are connected to the pin 7 GND within the IC, and P-GND of OUT1 and OUT3 is connected to the pin 14 GND.
Truth Table
IN 1, 3 H L H L IN 2, 4 L H H L OUT 1, 3 H L L OFF OUT 2, 4 L H L OFF Mode Forward Reverse Brake Standby
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 are . Motor surge current when thecurrent flowsstarts as follows: it shifts rotation directions (forward O reverse). DC motor up . Passthrough current generated within the IC when or when rotation directions (forward O reverse) or when shifting from shifting forward/reverse rotation to braking, or vice versa. The following points should pattern layout: . Keep the wiring lines thickbe kept in mind regarding thewiring inductance between the power supply (V ) and GND. and short in order to reduce . Insert a passthrough capacitor near the IC. (Maximum effect is obtained by inserting the passthrough capacitor between V and the pin 7 GND . If the CPU and at the closest distance possible. separate boards and the difference between the ground potential of each board is the LB1836M are mounted on
S S
large, install resistors of about 10 k in series between the CPU and the LB1836M inputs.
No.3947-2/5
LB1836M
Block Diagram
Thermal shutdown
Note: As long as the voltages applied to VCC, VS1, VS2, and IN1 through IN4 are within the limits set by the absolute maximum ratings, there are no restrictions on the relationship of each voltage level in comparison with the others (regarding which is higher or lower). (ex. VCC = 3 V, VS1, 2 = 2 V, IN1 to IN4 = 5 V)
Vcont pin
Control
Control
(= constant)
As shown in the above diagram, the Vcont pin outputs the voltage of the band gap Zener VZ+VF (= 1.93 V). 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.3947-3/5
LB1836M
Allowable power dissipation, Pd max - mW Output saturation voltage, VO(sat) - V
Specified board (30 x 30 x 1.5 mm3 glass epoxy )
Ambient temperature, Ta - C Output saturation voltage, VO (sat) - V
Output current, IO - mA
total value
Input current, IIN - A
Ambient temperature, Ta - C Output saturation voltage, VO (sat) - V
Ambient temperature, Ta - C
Current drain, IS - mA
Break
Parallel connection total
Forward Reverse
Output current, IO - mA
Ambient temperature, Ta - C
Current drain, ICC - mA
Break
Forward Reverse
Ambient temperature, Ta - C
Input current, IIN - A
Input voltage, VIN - V No.3947-4/5
LB1836M
Break
Current drain, ICC - mA
Current drain, IS - mA
Break
Forward/Reverse
Forward/Reverse
Standby
Standby
Supply voltage, VCC - V
Supply voltage, VS - V
No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. Anyone purchasing any products described or contained herein for an above-mentioned use shall: 1 Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: 2 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of February, 1997. Specifications and information herein are subject to change without notice.
No.3947-5/5

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