TNY278GN Power Integrations, TNY278GN Datasheet - Page 17
Manufacturer Part Number
IC OFFLINE SWIT OVP OTP HV 8SMD
Specifications of TNY278GN
124 ~ 140kHz
Voltage - Output
-40°C ~ 150°C
Package / Case
8-SMD Gull Wing, 7 Leads
Input / Supply Voltage (max)
Input / Supply Voltage (min)
Duty Cycle (max)
Operating Temperature Range
- 40 C to + 150 C
No. Of Outputs
Voltage Regulator Case Style
No. Of Pins
For Use With
596-1194 - KIT DESIGN REF TINYSWITCH-III
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Pin Cap Value
conditions. Total device consumption at no-load is the sum of I
Since the output MOSFET is switching, it is difﬁ cult to isolate the switching current from the supply current at the DRAIN. An
alternative is to measure the BP/M pin current at 6.1 V.
BP/M pin is not intended for sourcing supply current to external circuitry.
To ensure correct current limit it is recommended that nominal 0.1 μF / 1 μF / 10 μF capacitors are used. In addition, the BP/M
capacitor value tolerance should be equal or better than indicated below across the ambient temperature range of the target
application. The minimum and maximum capacitor values are guaranteed by characterization.
For current limit at other di/dt values, refer to Figure 23.
TNY274 does not set an increased current limit value, but with a 10 μF BP/M pin capacitor the current limit is the same as with a
1 μF BP/M pin capacitor (reduced current limit value).
This parameter is derived from characterization.
This parameter is derived from the change in current limit measured at 1X and 4X of the di/dt shown in the I
typical speciﬁ cation under worst case application conditions (rectiﬁ ed 265 VAC) for no-load consumption calculations.
Breakdown voltage may be checked against minimum BV
exceeding minimum BV
Auto-restart on time has the same temperature characteristics as the oscillator (inversely proportional to frequency).
is an accurate estimate of device controller current consumption at no-load, since operating frequency is so low under these
is the worst case OFF state leakage speciﬁ cation at 80% of BV
Tolerance Relative to Nominal
speciﬁ cation by ramping the DRAIN pin voltage up to but not
and maximum operating junction temperature. I
Rev. I 01/09