TNY277P Power Integrations, TNY277P Datasheet

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TNY277P

Manufacturer Part Number
TNY277P
Description
Manufacturer
Power Integrations
Datasheet

Specifications of TNY277P

Case
8- DIP
Notes
NEW
Date_code
10+

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Lowest System Cost with Enhanced Flexibility
• Simple ON/OFF control, no loop compensation needed
• Selectable current limit through BP/M capacitor value
• ON-time extension – extends low line regulation range/
• Self-biased: no bias winding or bias components
• Frequency jittering reduces EMI filter costs
• Pin-out simplifies heatsinking to the PCB
• SOURCE pins are electrically quiet for low EMI
Enhanced Safety and Reliability Features
• Accurate hysteretic thermal shutdown protection with
• Improved auto-restart delivers <3% of maximum power
• Output overvoltage shutdown with optional Zener
• Line under-voltage detect threshold set using a single
• Very low component count enhances reliability and
• High bandwidth provides fast turn on with no overshoot
• Extended creepage between DRAIN and all other pins
EcoSmart
• Easily meets all global energy efficiency regulations
• No-load <150 mW at 265 VAC without bias winding,
• ON/OFF control provides constant efficiency down to
Applications
• Chargers/adapters for cell/cordless phones, PDAs, digital
TNY274-280
TinySwitch-III Family
Energy Efficient, Off-Line Switcher with
Enhanced Flexibility and Extended Power Range
- Higher current limit extends peak power or, in open
- Lower current limit improves efficiency in enclosed
- Allows optimum TinySwitch-III choice by swapping
Tight I
- Maximizes MOSFET and magnetics power delivery
- Minimizes max overload power, reducing cost of
hold-up time to reduce input bulk capacitance
automatic recovery eliminates need for manual reset
in short circuit and open loop fault conditions
optional resistor
enables single-sided printed circuit board layout
and excellent transient load response
improves field reliability
<50 mW with bias winding
very light loads – ideal for mandatory CEC regulations
and 1 W PC standby requirements
cameras, MP3/portable audio, shavers, etc.
frame applications, maximum continuous power
adapters/chargers
devices with no other circuit redesign
transformer, primary clamp & secondary components
2
f parameter tolerance reduces system cost
®
– Extremely Energy Efficient
Product Highlights
®
Table 1. Notes: 1. Minimum continuous power in a typical non-
ventilated enclosed adapter measured at 50 °C ambient. Use of an
external heatsink will increase power capability 2. Minimum peak
power capability in any design or minimum continuous power in an
open frame design (see Key Application Considerations). 3. Packages:
P: DIP-8C, G: SMD-8C. See Part Ordering Information.
• PC Standby and other auxiliary supplies
• DVD/PVR and other low power set top decoders
• Supplies for appliances, industrial systems, metering, etc.
Description
TinySwitch-III incorporates a 700 V power MOSFET, oscillator,
high voltage switched current source, current limit (user
selectable) and thermal shutdown circuitry. The IC family uses
an ON/OFF control scheme and offers a design flexible solution
with a low system cost and extended power capability.
Figure 1. Typical Standby Application.
TNY274 P or G
TNY275 P or G
TNY276 P or G
TNY277 P or G
TNY278 P or G
TNY279 P or G
TNY280 P or G
PRODUCT
+
HV DC Input
Wide-Range
-
TinySwitch-III
OUTPUT POWER TABLE
3
Adapter
8.5 W
230 VAC ±15%
10 W
13 W
16 W
18 W
20 W
6 W
D
S
BP/M
EN/UV
1
Peak or
Frame
23.5 W
36.5 W
Open
15 W
19 W
28 W
32 W
11 W
2
Adapter
10 W
12 W
14 W
5 W
6 W
7 W
8 W
85-265 VAC
February 2006
1
PI-4095-082205
Peak or
Frame
21.5 W
28.5 W
11.5 W
Output
Open
8.5 W
15 W
18 W
25 W
DC
+
-
2

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