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| 型號(hào)： | TLE8242 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQFP64 |
| 封裝： | GREEN, PLASTIC, LQFP-64 |
| 文件頁(yè)數(shù)： | 21/77頁(yè) |
| 文件大?。?/td> | 1580K |
| 代理商： | TLE8242 |
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TLE8242
Functional Description and Electrical Characteristics
Data Sheet
28
Rev. 1.0, 2009-02-25
5.4
Output Driver
The OUTx pins of the device are connected to the gates of the external MOSFET transistors. The OUTx pin driver
circuits charge and discharge the MOSFET gate capacitance with a constant current source and sink. The supply
for the current source is the V5D pin. Internal resistors to ground are included on the OUTx pins so that the external
MOSFET is held in the off state when power is not applied to the device.
An external resistor is typically placed between the OUTx pin and the gate of the external MOSFET in order to set
the MOSFET turn-on and turn-off times. The value of the resistor must be chosen such that the turn-on and turn-
off times of the MOSFET are no longer than 1/(Fpwm*32).
Electrical Characteristics:
V5D = 4.75V to 5.25V, Vbat = 5.5V to 42V,
T
j = -40 °C to +150 °C, all voltages with respect to ground, positive
current flowing into pin (unless otherwise specified)
5.5
Current Control
Electrical Characteristics:
V5D = 4.75V to 5.25V, Vbat = 5.5V to 42V,
T
j = -40 °C to +150 °C, all voltages with respect to ground, positive
current flowing into pin (unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit
Conditions
Min.
Typ.
Max.
5.4.1
Passive Gate Pull Down
Resistance
R
PD
50
–
200
k
Internal pull down
resistor present at
each OUTx pin
5.4.2
OUTx source current
I
O_SRC
-30
–
-15
mA
VOUT = V5D-2V
5.4.3
OUTx sink current
I
O_SNK
15
–
30
mA
VOUT = 2V
Pos.
Parameter
Symbol
Limit Values
Unit
Conditions
Min.
Typ.
Max.
5.5.1
Offset Error
Output from Average block in
1 count = 320/Rsense * 2-13 mA
0
–
120
counts Autozero
disabled.Vpos-
Vneg=0mV
Vpos, Vneg
≤ 30V
Dither disabled
5.5.2
Gain Error
-2
–
2
%
Autozero
Enabled.Vpos-
Vneg=300mV
Vpos, Vneg
≤ 30V
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