LC5222S datasheet(2/11 Pages) SANKEN

Nome de Peças	LC5222S

Descrição Electrónicos	Off-Line DC / DC LED Driver ICs

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Fabricante Electrônico	SANKEN [Sanken electric]

Página de início	http://www.sanken-ele.co.jp/en

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Selection Guide

Part

Number

Package

Maximum Input

Voltage

VBB(max)

(V)

Output MOSFET

RDS(ON)(max)

(Ω)

LC5222D

DIP8

250

2.2

LC5225D

450

6

LC5222S

SOP8

250

2.2

LC5225S

450

6

Absolute Maximum Ratings Unless specifically noted, TA is 25°C

Characteristic

Symbol

Notes

Pins1

Rating

Unit

Main Power Supply Voltage

VBB

LC5222D/S

6 – 8

(7 – 8)

250

V

LC5225D/S

450

V

Output Breakdown Voltage

VO(BR)

LC5222D/S

5 – 4

(5, 6 – 4)

250

V

LC5225D/S

450

V

Output Current2

IO

Pulse width ≥ 1 μs

5 – 4

(5, 6 – 4)

0.5

A

PWM Pin Voltage3

VPWM

2 – 8

−0.3 to VZ

V

REF Pin Input Voltage3

VREF

3 – 8

−0.3 to VZ

V

SEN Pin Voltage

VSEN

Pulse width ≥ 1 μs

4 – 8

−0.3 to 4.0

V

Allowable Power Dissipation4,5

PD

LC5222S

LC5225S

On Sanken evaluation PCB

―

0.85

W

LC5222D

LC5225D

1.73

W

Operating Ambient Temperature

TA

―−40 to 105

°C

Storage Temperature

Tstg

―−40 to 150

°C

Junction Temperature

TJ

―

150

°C

1

Where the pin numbers differ between the DIP8 and the SOP8 packages, the SOP8 pin number is written in parentheses.

2

The output current value may be restricted based on duty cycle, ambient air temperature, or heat dissipation conditions. In any case, please be sure

to keep from exceeding the junction temperature, TJ.

3

Zener diodes are built-in between the PWM pin and GND, and between the REF pin and GND. VZ is the breakdown voltage of these internal Zener

diodes, and VZ = 6.3 V (typ). In addition, the maximum sink current is 1 mA.

4

Allowable loss, PD , is dependent on the circuit layout of the PCB to be used.

5

Please refer to the Ambient Temperature versus Power Dissipation Curve.

The polarity value for current specifies a sink as "+," and a source as “−,” referencing the IC.

Ambient Temperature, TA (°C)

2.0

1.5

1.0

0.5

0

25

50

100

75

150

125

Ambient Temperature versus Power Dissipation

On Sanken evaluation PCB

R

θJ-A

= 72

°C/W

R

θJ-A = 147

°C/W

PD = 1.73 W

PD = 0.85 W

SOP

DIP

LC5222D/25D and

LC5222S/25S

2

SANKEN ELECTRIC CO., LTD.

LC5222D/25D_22S/25S-DS

Off-Line DC/DC LED Driver ICs

August 8, 2012

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