TEA1762T/N2,118 NXP Semiconductors, TEA1762T/N2,118 Datasheet - Page 5

• Manufacturer Part Number: TEA1762T/N2,118
• Description: IC CTRLR GREENCHIP SYNC 14-SOIC
• Manufacturer: NXP Semiconductors
• Series: GreenChip™r

Specifications of TEA1762T/N2,118

• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Mode: Discontinuous Conduction (DCM)
• Voltage - Supply: 8.6 V ~ 38 V
• Operating Temperature: -20°C ~ 150°C
• Mounting Type: Surface Mount
• Output Voltage: 10 V
• Output Current: 5 mA
• Output Power: 0.65 W
• Input Voltage: 20 V
• Operating Temperature Range: - 55 C to + 125 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency - Switching: -
• Current - Startup: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935283651118

NXP Semiconductors
TEA1762T_2
Product data sheet
7.3 SMPS output voltage and current regulation
7.4 Opto outputs
7.5 Protection input
7.6 Reference voltage output
7.7 Supply management
7.8 OverTemperature Protection (OTP)
The output voltage of the flyback Switched Mode Power Supply (SMPS) can be controlled
by sensing the output voltage via the VSENSE pin. The feedback loop via the primary
controller can regulate the output voltage of the switched mode power supply by
regulating the voltage on the VSENSE pin to 2.5 V above the voltage on pin SENSEGND.
Also the output current of the flyback SMPS can be controlled or limited. The voltage on
the ISENSE pin is regulated or limited to 50 mV above the voltage on pin POWERGND.
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 outputs are linearly controlled via the VSENSE and ISENSE input pins. An
over-temperature situation will switch the protection opto output (OPTOPROT) to its
maximum sink current.
During start-up (V
The PROTECT pin is a general purpose input pin which can be used for additional
protection of the switched mode power supply. With a Negative Temperature Coefficient
(NTC) thermistor external temperature protection can be provided, e.g. the external power
switches and transformer can be protected against high temperatures. With a Zener diode
a secondary overvoltage protection can be made.
The reference voltage output pin can be used for supplying external circuitry. The
maximum output current must be limited to 1 mA.
The reference voltage is activated as soon as the start-up voltage is reached on the V
pin and switched off again after the 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 OPTOPROT 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.
CC
< V
Rev. 02 — 25 April 2007
startup
) and undervoltage lock-out the outputs are disabled.
CC
pin voltage drops below the V
GreenChip synchronous rectifier controller
Figure
5). The opto outputs have
TEA1762T
CC
© NXP B.V. 2007. All rights reserved.
stop level.
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CC