TB6559FG Toshiba, TB6559FG Datasheet - Page 10

• Manufacturer Part Number: TB6559FG
• Manufacturer: Toshiba

Specifications of TB6559FG

• Functions: Driver
• Vopmax (vm*): 30V (50V)
• Io (lpeak): 1A (2.5A)
• Channel: 1-ch
• Pwm Drive: direct PWM & constant current PWM
• Package: HSOP16
• Rohs Compatible†: yes

Internal Constant-Voltage (5 V) Circuit
Output Circuit
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Switching Characteristics
The TB6559FG includes a 5-V power supply for control circuit biasing.
For oscillation prevention, a capacitor should be connected between VREG and S-GND.
Although VRGE can be used to control the inputs to the TB6559FG, the maximum load current should be
limited to 1 mA.
The TB6559FG has power monitoring circuitry that turns off the output when VREG falls below 6.0 V
(design target value). With a hysteresis of 0.3 V (design target value), the output is turned back on when
VREG reaches 6.3 V (design target value) again.
The TB6559FG uses P-channel MOS transistors on the high side and N-channel MOS transistors on the
low side.
The output ON-resistance (R
The switching characteristics of the output transistors are shown below.
Dead time
(OUT1, OUT2)
Output voltage
Item
t
t
pLH
pHL
t
t
r
f
PWM input
Typical Value
1000
750
100
150
700
V
CC
V
on)
CC
is 1.3 Ω (high-side and low-side sum)
OUT1
(OUT2)
P-GND
V
10%
CC
VREG
Unit
ns
t
t
pLH
r
10
50%
90%
90%
50%
t
f
t
pHL
10%
TB6559FG
2009-04-14