TEA1761T/N2,118 NXP Semiconductors, TEA1761T/N2,118 Datasheet - Page 5

• Manufacturer Part Number: TEA1761T/N2,118
• Description: IC CTRLR GREENCHIP SYNC 8-SOIC
• Manufacturer: NXP Semiconductors
• Series: GreenChip™r

Specifications of TEA1761T/N2,118

• Mode: Discontinuous Conduction (DCM)
• Frequency - Switching: 125kHz
• Current - Startup: 60µA
• Voltage - Supply: 8.6 V ~ 38 V
• Operating Temperature: -20°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Output Voltage: 10 V
• Output Current: 5 mA
• Input Voltage: 8.6 V to 38 V
• Supply Current: 1 mA
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935284211118

NXP Semiconductors
TEA1761T_2
Product data sheet
7.4 Opto output
7.5 Supply management
7.6 OverTemperature Protection (OTP)
7.7 Driver
The opto output is intended to drive an opto coupler (see
an open-drain output configuration. The maximum sink current is internally limited to 5 mA
(typical). The output is linearly controlled via the V
over-temperature situation will switch the opto output to its maximum sink current.
During start-up (V
All (internal) reference voltages are derived from a temperature compensated, on-chip
band gap circuit. The reference voltage is trimmed to an accuracy within 1 %.
The IC provides an accurate internal overtemperature protection of 150 C (typical). The
IC will maximize the current of pin OPTO as soon as the internal temperature limit is
reached. The opto signal can be used on the primary side of the flyback controller to
activate the SMPS protection or limit the output power. As soon as the overtemperature
condition is solved, normal operation will resume.
The driver circuit to the gate of the external power MOSFET has a source capability of
typically 250 mA and a sink capability of typically 2.7 A. This permits fast turn-on and
turn-off of the power MOSFET for efficient operation. The output voltage of the driver is
limited to 10 V (typical). This high output voltage will drive all MOSFET brands to the
minimum on-state resistance.
During start-up conditions (V
voltage is actively pulled low.
CC
< V
Rev. 02 — 25 April 2007
startup
CC
) and undervoltage lock-out the output is disabled.
< V
startup
) and undervoltage lock-out the driver output
GreenChip synchronous rectifier controller
SENSE
and I
Figure
SENSE
5). The opto output has
TEA1761T
input pins. An
© NXP B.V. 2007. All rights reserved.
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