TB6596FLG
TOSHIBA BiCD Integrated Circuit Silicon Monolithic
TB6596FLG
DC and Stepping Motor Driver IC
The TB6596FLG is a DC motor driver IC using LDMOS output
transistors with low ON-resistance.
The TB6596FLG incorporates one PWM-constant-current
H-bridge driver, four direct-PWM-controlled H-bridge drivers, and
also one linear constant-current H-bridge driver. The TB6596FLG
is best suited to control various lens actuators in digital still
cameras.
The three-wire serial interface provides control over the drivers,
thus reducing the number of lines required for interfacing with
the control IC.
Weight: 0.08 g (typ.)
Features
•
•
•
•
•
Motor power supply voltage: V
M
≤
6 V (max)
Control power supply voltage: V
CC
=
3 to 6 V
Output current: I
OUT
≤
0.8 A (max)
Complementary P- and N-channel LDMOS output transistors
Output ON-resistance: Ron (upper and lower sum)
=
1.5
Ω
(typ.)
Channel E: DC Motor Driver
•
High-speed PWM control at several hundred kHz
•
Motor control method can be selected from the following two with the serial data inputs:
1. Controls motor speed by using both a frequency-locked-loop (FLL) speed discriminator that compares the FG
and CLK signals, and an integrator.
(Typical speed
=
Between 250 Hz and 1750 Hz in 16 steps.)
2. Controls H-bridge by using a direct PWM input.
Two power switching transistors for optical encoder
•
Channel A and B or Channel C and D: Stepping Motor Driver
•
Four H-bridge drivers (channel A and B, channel C and D) for direct PWM control.
(Capable of controlling up to two 2-phase bipolar stepping motors or four DC motors.)
Channel F: Shutter Driver
•
Linear constant-current drivers
•
Current ramp-up rate control for improving the dependency of a current ramp-up slope on supply voltage change
at startup and also for improving its reproducibility.
(Increases current in up to 32 steps by using the internal CLK, which is derived by dividing CLK by 1 to 16.)
Other Features
•
Two 6-bit DACs provide reference values for each constant-current limiters
•
•
•
•
•
Dedicated standby (power-save) pin
Thermal shutdown (TSD): Disables the output bias generator when the internal junction temperature exceeds
170°C.
Undervoltage lockout (UVLO): Resets and disables the internal circuitry when V
CC
falls below 2.2 V (typ.)
Small QON-36 package (0.5-mm lead pitch)
Compatible with Pb-free reflow soldering
1
2008-01-29
TB6596FLG
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.
About solderability, following conditions were confirmed
•
Solderability
(1) Use of Sn-37Pb solder Bath
· solder bath temperature
=
230°C
· dipping time
=
5 seconds
· the number of times
=
once
· use of R-type flux
(2) Use of Sn-3.0Ag-0.5Cu solder Bath
· solder bath temperature
=
245°C
· dipping time
=
5 seconds
· the number of times
=
once
· use of R-type flux
2
2008-01-29
实时操作系统RTOS
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