TB6557FLG
TOSHIBA BiCD Integrated Circuit Silicon Monolithic
TB6557FLG
DC Motor Driver
The TB6557FLG is a driver IC for driving DC motors. Its
employs LDMOS devices with low ON resistance for output drive
transistors. The TB6557FLG incorporates two constant
current-controlled H-bridge drivers and four voltage-controlled
H-bridge drivers, making it ideal for controlling Zoom/AF/IRIS
lens motors in digital still cameras and camcorders. It supports
three-wire serial data to control motors, thus reducing the
number of lines for interfacing the control IC.
Features
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Motor power supply voltage: V
M
≤
15 V (max)
Control power supply voltage: V
CC
= 2.7 to 6 V
Output current: I
out
≤
0.8 A (max)
P-/N-ch LDMOS complementary output transistors
Output ON resistance: Ron (upper + lower) = 1.5
Ω
(typ.)
High-speed PWM chopping control at 100 kHz or higher (constant-current H-SW)
Independent standby (Power save) feature
Two 6-bit DACs for setting current value for constant-current H-SW
Thermal shutdown (TSD) protective circuit
Circuit for preventing malfunction at low voltage (shuts down internal circuits at UVLO: V
CC
≤
2.2 V (typ.)).
Small QON-36 package (0.5-mm lead pitch)
Supports Pb-free reflow mounting
Weight: 0.08 g (typ.)
The TB6557FLG is a Pb-free product.
The following conditions apply to solderability:
*Solderability
1. Use of Sn-37Pb solder bath
*solder bath temperature = 230ºC
*dipping time = 5 seconds
*number of times = once
*use of R-type flux
2. Use of Sn-3.0Ag-0.5Cu solder bath
*solder bath temperature = 245ºC
*dipping time = 5 seconds
*number of times = once
*use of R-type flux
Note: This product has a MOS structure and is sensitive to electrostatic discharge. When handling this product,
ensure that the environment is protected against electrostatic discharge by using an earth strap, a conductive
mat and an ionizer. Ensure also that the ambient temperature and relative humidity are maintained at
reasonable levels.
For part availability and ordering information please call Toll Free: 800.984.5337
Website: www.marktechopto.com | Email: info@marktechopto.com
1
2006-6-26
TB6557FLG
Recommended Operating Conditions 2: Serial Data Controller
(Ta
= −20
to 85°C)
Characteristics
Low-level clock pulse width
High-level clock pulse width
Clock rise time
Clock fall time
Data setup time
Data hold time
Load setup time
Load hold time
High-level load pulse width
Latch output settling time
CK (clock pulse) frequency
LD (load pulse) frequency
Symbol
t
CKL
t
CKH
t
Cr
t
Cf
t
DCH
t
CHD
t
CHL
t
LDC
t
LDH
t
LDD
f
CLK
f
LD
Rating
Min
200
200
⎯
⎯
30
60
200
100
100
⎯
⎯
⎯
Max
⎯
⎯
50
50
⎯
⎯
⎯
⎯
⎯
100
2.5
1.5
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
MHz
MHz
Unit
t
Cr
CK
t
CKL
DA
t
CKH
t
Cf
t
CHD
t
LDC
t
DCH
LD
t
CHL
t
LDH
Latch
4
2006-6-26
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