TB6607FLG Toshiba, TB6607FLG Datasheet - Page 7

• Manufacturer Part Number: TB6607FLG
• Manufacturer: Toshiba

Specifications of TB6607FLG

• Function: Driver
• Vopmax (vm*): 5.5V (6V)
• Io (lpeak): 0.6A (0.8A)
• Channel: 5-ch
• I/f: serial input
• Option: Const current x2
• Package: QON36
• Rohs Compatible†: yes

capacitor (C
follows:
calculated as:
which is, twice the time from t1 to t2.
value due to the board capacitance on the OSC pin and other factors. It is therefore recommended to adjust
the external capacitor value (C
Oscillator Operation: The on-chip oscillation is controlled by the charging and discharging of an external
In the above circuit, the charging and discharging rate (V
Let the time at V
The cycle period of the triangular wave oscillation is equal to the period of rise and fall times of V
In the above diagrams, ΔV
In actual applications, however, the capacitance required for C
which can be rewritten as:
Examples: f
ΔV
Hence, f
V
f
f
t1
OSC
OSC
OSC
OSC
1
−
t2
OSC
=
=
=
=
= I × (t1 − t2)/C
2
OSC
f
C
OSC
OSC
2
Δ
).
(t1
OSC
V
1
×
1
OSC
−
OSC
can be expressed as a function of C
0.4/100
Oscillator
= 532 kHz when C
= 256 kHz when C
t2)
∫
i
I
⋅
dt
= 0.8 V be t1 and the time at V
C
=
OSC
2
Δ ⋅
1
μ
OSC
OSC
V
A
OSC
OSC
×
= |1.2 V − 0.8 V| = 0.4 V. Thus, f
I
ON when
charging
ON when
discharging
C
) experimentally.
⋅
OSC
C
OSC
OSC
OSC
OSC
V
CC
=
= 270 pF
= 560 pF
6.957
7
×
10
OSC
1
OSC
3
×
as follows:
= 1.2 V be t2, then the V
OSC
C
1.2 V
0.8 V
OSC
) of the external capacitor is calculated as
OSC
OSC
may slightly differ from the theoretical
can be calculated as:
V
OSC
Waveform
OSC
slope (ΔV
TB6607FLG
2008-01-15
OSC
OSC
) is
slope,