SANYO LB1843V Datasheet
Ordering number: EN 4385B
Monolithic Digital IC
LB1843V
Low-saturation, current-controlled
bidirectional motor driver
Overview
The LB1843V is a low-saturation bidirectional motor driver
with output current limitation and detection functions. This
design is ideal for controlling the loading motor in a video
camera.
Package Dimensions
unit : mm
3179A-SSOP20
[LB1843V]
Features
.
Output current limiter and detector built in
.
Low-saturation voltage bidirectional bridge circuit built in:
V
sat = 0.40 V typ. at 400 mA
O
.
Practically no current drain (0.1 µA or less) in standby mode
.
Input-linked reference voltage built in
.
Thermal shutdown circuit built in
.
Requires little space, since few external components are
needed and the IC is contained in a small SSOP-20 package
SANYO : SSOP20
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
Maximum output current Im max 800 mA
Applied input voltage V
Allowable power dissipation Pd max With board ( 50 × 35 × 1.6 mm
Operating temperature Topr –20 to +80 °C
Storage temperature Tstg –40 to +150 °C
max 10.5 V
CC
IN
3
) 800 mW
–0.3 to +10 V
Allowable Operating Ranges at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Supply voltage V
V
voltage V
M
High-level input voltage V
Low-level input voltage V
LIR input voltage V
Output current limitation I
CC
M
IH
IL
LIR
limit
3.0 to 9.0 V
2.2 to V
3.0 to 9.0 V
–0.3 to +0.7 V
0.5 to VCC–1.0 V
50 to 350 mA
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
O3096HA(II) No.4385-1/6
CC
V
LB1843V
Electrical Characteristics at Ta = 25°C, VCC= 7.2 V
Parameter Symbol Conditions min typ max Unit
0 During standby 0.1 10 µA
I
CC
I
Supply current
Output saturation voltage
Reference voltage Vref I
Set output current I
Input current I
RD saturation voltage V
Output current limit is determined by the following equation (Rfis the sensing resistance between VCCand VM):
I
limit=VLIR
The input range for V
/10Rf(A)
LIR
is 0.5 to VCC–1.0 (V)
1 During bidirectional operation, no load 9 13 mA
CC
I
2 During braking 12 18 mA
CC
Vsat1 I
Vsat2 I
limit
IN
sat IO= 1 mA 0.3 V
RD
= 200 mA (upper side + lower side) 0.20 0.30 V
O
= 400 mA (upper side + lower side) 0.40 0.60 V
O
ref = 1 mA 1.85 2.0 2.15 V
V
Resistance between VCCand VM=1Ω,
when LIR = 2 V
VIN= 5 V 90 150 µA
165 185 205 mA
Pd max – Ta
Specified board (50 × 35 × 1.6 mm3glass epoxy)
Allowable power dissipation, Pd max – mW
Ambient temperature, Ta – °C
No.4385-2/6
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