TOP252-262
EcoSmart®– Energy Efficient
• Energy efficient over entire load range
• No-load consumption
• Less than 200 mW at 230 VAC
• Standby power for 1 W input
• >600 mW output at 110 VAC input
• >500 mW output at 265 VAC input
Y Package Option for TOP259-261
In order to improve noise-immunity on large TOPSwitch-HX
Y package parts, the F pin has been removed (TOP259-261YN
are fixed at 66 kHz switching frequency) and replaced with a
SIGNAL GROUND (G) pin. This pin acts as a low noise path for
the C pin capacitor and the X pin resistor. It is only required for
the TOP259-261YN package parts.
Description
TOPSwitch-HX cost effectively incorporates a 700 V power
MOSFET, high voltage switched current source, PWM control,
oscillator, thermal shutdown circuit, fault protection and other
control circuitry onto a monolithic device.
+
DC
AC
IN
OUT
-
D
S
V
Notes for Table 1:
1. Minimum continuous power in a typical non-ventilated
enclosed adapter measured at +50 °C ambient. Use of an
external heat sink will increase power capability.
2. Minimum continuous power in an open frame design at
+50 °C ambient.
CONTROL
C
TOPSwitch-HX
X
G
3. Peak power capability in any design at +50 °C ambient.
4. 230 VAC or 110/115 VAC with doubler.
PI-4973-122607
5. Packages: P: DIP-8C, G: SMD-8C, M: SDIP-10C,
Y: TO-220-7C, E: eSIP-7C, L: eSIP-7F.
Figure 2. Typical Flyback Application TOP259YN, TOP260YN and TOP261YN.
See part ordering information.
6. TOP261 and TOP262 have the same current limit set point. In
some applications TOP262 may run cooler than TOP261 due
to a lower RDS(ON) for the larger device.
7. TOP256E package parts are available with Green (Halogen
Free) mold compound. See Part Ordering Information on
page 47. Parametrically green material encapsulated E
package parts are identical to non-green parts.
2
Rev. F 01/09
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