TNY256G

Operating Temperature Range : - 40 C to + 150 C
Mounting Style : SMD/SMT
Packaging : Tube
Input / Supply Voltage (Max) : 265 VAC
Input / Supply Voltage (Min) : 85 VAC
Package / Case : SMD-8
Output Voltage : 5.8 V
Duty Cycle (Max) : 69 %
Switching Frequency : 130 KHz
Supply Current : 255 uA


Features:

• Extended power range
• Fully integrated auto-restart reduces short circuit current
• Line under-voltage sense eliminates turn-off glitches
• Frequency jittering dramatically reduces EMI (5 to 10 dB)
• TO-220 package option


Pinout




Specifications

DRAIN Voltage ....................................... - 0.3 V to 700 V
Peak DRAIN Current .............................................800 mA
EN/UV Voltage ............................................ - 0.3 V to 9 V
EN/UV Current ......................................................100 mA
BYPASS Voltage .......................................... -0.3 V to 9 V
Storage Temperature ............................... -65 to 125 °C
Operating Junction Temperature⁽²⁾ .......... -40 to 150 °C
Lead Temperature⁽³⁾ .......................................... 260 °C
1. All voltages referenced to SOURCE, T_A = 25 °C.
2. Normally limited by internal circuitry.
3. 1/16" from case for 5 seconds.


Description

The TNY256 extends the power range of the TinySwitch family of energy efficient, low power off-line switchers. TinySwitch devices use a breakthrough design to provide the lowest cost, high efficiency, off-line switching solution for low power applications. They integrate a 700 V power MOSFET, oscillator, high voltage switched current source, current limit and thermal shutdown circuitry into a single, monolithic device. The devices start-up and operate on power derived from the DRAIN voltage, eliminating the need for a transformer bias winding and associated circuitry. TinySwitch's low operating current allows power supply no-load consumption to be kept under 100 mW, even at 265 VAC input.

The TinySwitch Plus incorporates auto-restart, line under-voltage sense, and frequency jittering features. The auto-restart circuit safely limits output power during fault conditions such as output short or open loop. The auto-restart circuit of TNY256 is fully integrated and does not require external timing components. The line undervoltage sense threshold can be externally programmed using a line sense resistor. During start-up, this feature keeps the TNY256 off until the input line voltage reaches the under-voltage threshold. When the input line voltage is removed, the line under-voltage circuit prevents auto-restart attempts after the output goes out of regulation. This eliminates power down glitches caused by the slow discharge of input storage capacitors present in applications such as standby supplies. A single resistor is used to implement this feature, eliminating what normally takes five to six components. The line sense resistor is optional. The TNY256 operating frequency of 130 kHz is jittered (frequency modulated) to reduce both quasipeak and average EMI, minimizing filtering costs.

Parameters:

Technical/Catalog Information	TNY256G
Vendor	Power Integrations
Category	Integrated Circuits (ICs)
Packaging	Tube
Package / Case	8-SMD
Power (Watts)	10W
Voltage - Input	-
Voltage - Output	700V
Frequency Range	115 ~ 140kHz
Operating Temperature	-40°C ~ 150°C
Output Isolation	Isolated
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	TNY256G TNY256G