LNK603-606/613-616

LinkSwitch-II Family

www.powerint.com

January 2010

Energy-Efficient, Accurate CV/CC Switcher

for Adapters and Chargers

®

Output Power Table

85-265 VAC

LNK603/613PG/DG

2.5 W

3.3 W

LNK604/614PG/DG

3.5 W

4.1 W

LNK605/615PG/DG

4.5 W

5.1 W

LNK606/616PG/GG/DG

5.5 W

6.1 W

Table 1. Output Power Table.

Notes:

1. Minimum continuous power in a typical non-ventilated enclosed adapter

measured at +50 °C ambient, device, T

2. Maximum practical continuous power in an open frame design with adequate

heatsinking, measured at 50 °C ambient (see Key Applications Considerations

section for more information).

3. Packages: P: DIP-8C, G: SMD-8C, D: SO-8C.

Product Highlights

Dramatically Simplifies CV/CC Converters

•

Eliminates optocoupler and all secondary CV/CC control circuitry

•

Eliminates all control loop compensation circuitry

Advanced Performance Features

•

Compensates for transformer inductance tolerances

•

Compensates for input line voltage variations

•

Compensates for cable voltage drop (LNK61X series)

•

Compensates for external component temperature variations

•

Very tight IC parameter tolerances using proprietary trimming

technology

•

Frequency jittering greatly reduces EMI filter cost

•

Even tighter output tolerances achievable with external resistor

selection/trimming

•

Programmable switching frequency up to 85 kHz to reduce

transformer size

Advanced Protection/Safety Features

•

Auto-restart protection reduces power delivered by >95% for

output short circuit and control loop faults (open and shorted

components)

•

Hysteretic thermal shutdown – automatic recovery reduces

power supply returns from the field

•

Meets high voltage creepage requirements between DRAIN and

all other pins both on the PCB and at the package

•

Easily meets all global energy efficiency regulations

•

No-load consumption below 30 mW at 230 VAC with optional

external bias winding

•

ON/OFF control provides constant efficiency down to very light

loads – ideal for CEC and ENERGY STAR 2.0 regulations

•

No current sense resistors – maximizes efficiency

Green Package

•

Halogen free and RoHS compliant package

Applications

•

Chargers for cell/cordless phones, PDAs, MP3/portable audio

devices, adapters, LED drivers, etc.

Description

The LinkSwitch-II dramatically simplifies low power CV/CC

charger designs by eliminating an optocoupler and secondary

control circuitry. The device introduces a revolutionary control

technique to provide very tight output voltage and current

regulation, compensating for transformer and internal parameter

tolerances along with input voltage variations.

The device incorporates a 700 V power MOSFET, a novel ON/OFF

control state machine, a high voltage switched current source for

self biasing, frequency jittering, cycle-by-cycle current limit and

hysteretic thermal shutdown circuitry onto a monolithic IC.

Figure 1.

Typical Application/Performance – Not a Simplified Circuit (a) and

Output Characteristic Envelope (b). (see Application Section for

more information).

LinkSwitch-II

Wide Range

High Voltage

DC Input

PI-4960-011510

D

S

FB

BP/M

±5%

±10%

PI-4906-041008

(a) Typical Application Schematic

(b) Output Characteristic