Document
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB6561NG
Dual Full-Bridge Driver IC for DC Motors
TB6561NG
The TB6561NG is a dual bridge driver IC for DC brush motor that contains MOS transistors in an output stage.
By using low ON-resistance MOS transistors and PWM current control circuitry, the driver achieves high efficiency.
Features
• Power supply voltage: 40 V (max) • Output current: 1.5 A (max) • Low ON-resistance: 1.5 Ω (upper and lower transistors/typ.) • Direct PWM current control system • Power-saving function • Forward/reverse/short brake/stop modes • Over-current protection: ILIM = 2.5 A (typ.) • Thermal shutdown • Package: SDIP-24-P-300-1.78
Weight: 1.62 g (typ.)
The following conditions apply to solderability: About solderability, following conditions were confirmed (1)Use of Sn-37Pb solder Bath ·solder bath temperature: 230℃ ·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℃ ·dipping time: 5 seconds ·the number of times: once ·use of R-type flux
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TB6561NG
Block Diagram
Some of the functional blocks, circuits and constants in the block diagram may be omitted or simplified for explanatory purposes.
S-GND Vreg
SB
24
2
3
VCC OUT2A
23
11
VCC
OUT1A OUT2B
VCC OUT1B S-GND
7
8 14
18
17 13
5V
Over-current detection circuit
Control logic
1
564
20 19 21
S-GND IN1A IN2A PWMA IN1B IN2B PWMB
Pin Assignment
S-GND
1
Vreg
2
SB
3
PWMA
4
IN1A
5
IN2A
6
VCC
7
OUT1A
8
N.C.
9
P-GNDA
10
OUT2A
11
S-GND
12
22
10
CLD P-GNDA
15 P-GNDB
12 S-GND
N.C.: 9 pin, 16 pin
24
S-GND
23
VCC
22
CLD
21
PWMB
20
IN1B
19
IN2B
18
VCC
17
OUT1B
16
N.C.
15
P-GNDB
14
OUT2B
13
S-GND
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TB6561NG
Absolute Maximum Ratings (Ta = 25°C)
Characteristics
Symbol
Rating
Unit
Power supply voltage
VCC
40
V
Output voltage
VO
40 (Note 1) V
Output current
IO (Peak)
1.5 (Note 2)
A
Input voltage
VIN
−0.3 to 5.5
V
Power dissipation
PD
2.5 (Note 3) W
Operating temperature
Topr
−20 to 85
°C
Storage temperature
Tstg
−55 to 150
°C
The absolute maximum ratings of a semiconductor device are a set of specified parameter values that must not be exceeded during operation, even for an instant. If any of these ratings are exceeded during operation, the electrical characteristics of the device may be irreparably altered, in which case the reliability and lifetime of the device can no longer be guaranteed. Moreover, any exceeding of the ratings during operation may cause breakdown, damage and/or degradation in other equipment. Applications using the device should be designed so that no absolute maximum rating will ever be exceeded under any operating condition.
Note 1: Please use output voltage within the above absolute maximum rating, 40 V, in which includes back-EMF voltage.
Note 2: The output current may be subject to the duty cycle, ambient temperature and heatsink. Ensure that the junction temperature does not exceed 150°C (max).
Note 3: When mounted on a board (50 mm × 50 mm × 1.6 mm, Cu area: 50 %)
Operating Range (Ta = 25°C)
Characteristics Power supply voltage
Symbol
Rating
Unit
VCC
10 to 36
V
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Pin Description
Pin No. 1 2
3
4
5
6 7 8 9 10 11 12 13 14 15 16 17 18 19
20
21 22 23 24
Symbol S-GND
Vreg
SB
PWMA
IN1A
IN2A VCC OUT1A N.C. P-GNDA OUT2A S-GND S-GND OUT2B P-GNDB N.C. OUT1B VCC IN2B
IN1B
PWMB CLD VCC
S-GND
TB6561NG
Function Description
Remarks
Signal ground 5-V output pin
Standby pin
Rotation direction control pin (chA)
Input pin 1 (chA)
Input pin 2 (chA) Power supply voltage input pin for motor drive (chA) Output pin 1 (chA)
⎯ Power ground for chA output Output pin 2 (chA) Signal ground Signal ground Output pin 2 (chB) Power ground for chB output
⎯ Output pin 1 (chB) Power supply voltage input pin for motor drive (chB) Input pin used to set output current level (chB) 2
Input pin used to set output current level (chB) 1
Rotation direction control pin (chB) Output signal pin of current limiter detection Power supply voltage input pin Signal ground
⎯
Connect a capacitor (0.1μF) between this pin and S-GND pin.
High: Start, Low: Standby; internal pull-down resistor of 100 kΩ (typ.).
Apply a 0-V/5-V signal; internal pull-down resistor of 100 kΩ (typ.).
Apply a 0-V/5-V signal; internal pull-down resistor of 100 kΩ (typ.).
Apply a 0-V/5-V signal; internal pull-down resistor of 100 kΩ (typ.).
VCC (opr) = 10 V to 36 V Connect to a motor coil pin.
⎯
⎯
Connect to a motor coil pin.
⎯
⎯
Connect to a motor coil pin.
⎯
⎯
Connect to a motor coil pin.
VCC (opr) = 10 V to 36 V Input 0-V/5-V signal; internal pull-down resistor of 100 kΩ (typ.).
Input 0-V/5-V signal; internal pull-down resistor of 100 kΩ (typ.).
Input 0-V/5-V signal; internal pull-down resistor of 100 kΩ (typ.).
⎯
VCC (opr) = 10 V to 36 V ⎯
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Electrical Characte.