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Ordering number : ENA1338
Monolithic Digital IC
LA1909M
Overview
Stepping Motor Driver IC
The LB1909M is a 2-channel low saturation voltage forward/reverse motor driver that can operate on a wide supply voltage range (2.5V to 16V). The IC is ideal for use in 2-phase excitation drive of general-purpose 2-phase bipolar stepping motors including dampers for refrigerators.
Features
* Wide supply voltage range : 2.5V to 16V * Low saturation voltage : VO(sat) = 0.25V typ at IO = 200mA. * Built-in shoot-through current protection circuit. * No standby current consumption (or zero). * Built-in thermal shutdown circuit. * Small package : MFP10S (225mil)
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Maximum power source voltage Applied output voltage Applied input voltage GND pin outflow current Allowable power consumption Symbol VCC max VOUT max VIN max IGND Pd max Independent IC Mounted on the specified board * Operating temperature Storage temperature Topr Tstg Conditions Ratings -0.3 to +20 -0.3 to +20 -0.3 to +18 800 350 870 -30 to +85 -40 to +150 Unit V V V mA mW mW C C
* Specified board: 114.3mm x 76.1mm x 1.6mm, glass epoxy board.
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O2908 MS 20081015-S00004 No.A1382-1/4
LB1909M
Allowable Operating Range at Ta = 25C
Parameter Supply voltage Input high level voltage Input low level voltage Symbol VCC VIH VIL Pins ENA, IN1, IN2 Conditions Ratings 2.5 to 16 1.8 to 10 -0.3 to +0.7 Unit V V V
Electrical Characteristics at Ta = 25C, VCC = 12V
Parameter Power source current Symbol ICC0 ICC1 Output saturation voltage VOUT1 VOUT2 Input current Thermal protection block *1 Thermal shutdown operation temperature Temperature hysteresis width Spark killer diode Reverse current orward voltage IS(leak) VSF IOUT = 400mA 30 1.7 A V Ttsd 60 C Ttsd Design guarantee *2 180 C IIN ENA = L ENA = H IOUT = 200mA IOUT = 400mA VIN = 5V Conditions min Ratings typ 0.1 25 0.25 0.50 120 max 10 35 0.35 0.75 160 A mA V V A Unit
*1 The thermal protection function is a feature to prevent the product from smoking and firing under unusual conditions. It is not intended to guarantee operation of the product under an ambient temperature exceeding the operating temperature range. *2 Design guarantee is not tested in individual units.
Package Dimensions
unit : mm (typ) 3086B
1.0
Pd max -- Ta
Specified board : 114.3x76.1x1.6mm3 glass epoxy board
10
6
0.63
5.0
Allowable power dissipation, Pd max -- W
0.87 0.8
4.4
6.4
0.6
0.45 0.4 0.35
Independent IC
1.7max
1
5
0.15
0.2
0.1 (1.5)
0.18
0.35
1.0
(0.5)
0 -30 -20
0
20
40
60
80 85
100
Ambient temperature, Ta -- C
SANYO : MFP10S(225mil)
No.A0000-2/4
LB1909M
Pin Assignment
VCC 1 10 OUT1
LB1909M
ENA 2 IN1 3 IN2 4 NC 5
9 OUT2 8 OUT3 7 OUT4 6 GND
Top view
Truth table
Input ENA L IN1 IN2 OUT1 OFF H L L H OUT2 OFF L H H L L H Channel 2 Output OUT3 OFF OUT4 OFF Standby mode Channel 1 Forward Reverse Forward Reverse Remarks
x
L H
x
H
Block Diagram
VCC 1
Thermal shutdown circuit
30k
ENA 2
Control block circuit
100k
10 9
OUT1
Motor
OUT2
35k
IN1 3
100k
35k
8 7
OUT3
IN1 4
100k
OUT4
6
GND
No.A0000-3/4
LB1909M
Timing Chart (2 phase excitation drive)
ENA
IN1
IN2
Channel 1 output
Standby
Forward
Reverse
Forward
Reverse
Forward Standby
Channel 2 output
Reverse
Forward
Reverse
Forward
Reverse
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This catalog provides information as of October, 2008. Specifications and information herein are subject to change without notice. PS No.A1338-4/4

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