E981.10A52KC ELMOS Semiconductor, E981.10A52KC Datasheet - Page 12

• Manufacturer Part Number: E981.10A52KC
• Description: Interface - Specialized Basic I/O Link Transciever
• Manufacturer: ELMOS Semiconductor

Specifications of E981.10A52KC

• Rohs: yes
• Product Type: Basic I/O Link Transceiver
• Operating Supply Voltage: 3.3 V
• Supply Current: 1.5 mA
• Maximum Power Dissipation: 900 mW
• Maximum Operating Temperature: + 100 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-20
• Minimum Operating Temperature: - 40 C

Figure 4: Transmitter characteristics
5.3.1 transmitter overload
The transmitter is disabled in case of overcurrent, overtemperature or improper supply conditions and switched
on after a time constant after the error condition has disappeared. The overcurrent information can be read from
pin ILIM during the driver shutoff period. The off time after detecting an overcurrent or overtemperature is pro-
portional to the supply voltage at pin VDDH.
The overcurrent threshold of the low side and high side drivers can be selected with the pin SILIM. The default level
of SILIM is low. An high level at this pin divides the overcurrent threshold by 2.
5.3.2 transmitter loads
Loads may be resistive or capacitive. If the load is inductive, the voltage at pin C/Q must be limited by properly di-
mensioned external clamping diodes.
The overload turn off time TOFF_OL_xx depends on the supply voltage level VDDH. Thus overload protection and
lamp drive current cover a wide supply current range.
The on time after detecting an overcurrent depends on the assumption of a potential wake up condition (RXD
changes state without changes in the control signals) or the assumption of a normal overload case (overload im-
mediately detected after turn on). Inductive overloads may simulate a wake up condition and cause the driver to
turn off for the current TXEN=low phase.
ELMOS Semiconductor AG
0.8 * VDDH
0.2 * VDDH
VDDH
0V
V(C/Q)
TDF
Data Sheet
12/19
TDR
QM-No.: 25DS0007E.02 2010-06-16
t
E981.10