TD340 データシートの表示（PDF） - STMicroelectronics

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TD340

H-BRIDGE QUAD POWER MOSFET DRIVER FOR DC MOTOR CONTROL

STMicroelectronics 

TD340

ELECTRICAL CHARACTERISTICS (continued)

Vbatt= 12V, Tamb=-40°C to 125°C (unless otherwise specified)

Symbol

Parameter

Test Condition

Min. Typ. Max. Unit

VOLTAGE REGULATOR - Co=220nF - note 2

Vout Output Voltage

Io=20mA

T=25°C

-40°C < T < 125°C

4.6

5

5.4 V

4.5

5

5.5 V

Line

Reg

Line Regulation

6V < Vbatt < 16V, Io=20mA

T=25°C

-40°C < T < 125°C

85 mV

130 mV

Load

Reg

Load Regulation

0 ≤ Io ≤ 20mA

T=25°C

-40°C < T < 125°C

40 mV

60 mV

Io Maximum Output Current

Vbatt = 12V, T=25°C

40

mA

6V < Vbatt < 16V,

-40°C < T < 125°C

20

mA

Ios Output Current Short Circuit

Vout=0

100 200 mA

RESET SUPERVISORY CIRCUIT - note 3

Vthi Threshold Voltage Vout Increasing

T=25°C

-40°C < T < 125°C

4.0

4.3

4.5 V

3.9

4.6 V

Vthd Threshold Voltage Vout Decreasing

T=25°C

-40°C < T < 125°C

3.9

4.2

4.4 V

3.8

4.5 V

ki Linearity coefficient (Vthi = ki Vout)

0.86

kd Linearity coefficient (Vthd = kd Vout)

0.84

Vhys Hysteresis Threshold Voltage

50

100 200 mV

tphl Response Time High to Low

5

µs

WATCHDOG CIRCUIT

twd Watchdog Time Out Period

No ext. capacitor

Cwd = 47nF - note 4

0.5

1

2 ms

0.7

1

1.5 s

tipw

Watchdog Input Pulse Width for Proper

Retrigger

0.1

µs

tipr

Watchdog Input Rise Time for Proper

Retrigger

0.1 µs

treset Reset Pulse Width

10

20

40 µs

TEMPERATURE OUTPUT

VT Output Voltage

T= 25oC

2.58 2.68 2.78 V

∆VT Output Temperature Drift

-7

-7.5

-7.8 mV/oC

Notes :

1. For proper operation, a 5.6k resistor needs to be connected between OSC and GND.

2. 220nF is the optimized value for the voltage regulator

3. The reset thresholds (Vout increasing and decreasing) are proportional to Vout, (coefficients ki and kd). ki and kd vary in the same

direction with temperature.

4. Watchdog capacitor Cwd should be placed as close as possible to CWD pin.

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