FSQ500L_09 FAIRCHILD [Fairchild Semiconductor], FSQ500L_09 Datasheet

FSQ500L_09

Manufacturer Part Number

FSQ500L_09

Description

Compact, Green Mode, Fairchild Power Switch

Manufacturer

FAIRCHILD [Fairchild Semiconductor]

Datasheet

1.FSQ500L_09.pdf (12 pages)

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FSQ500L • Rev. 1.0.1

FSQ500L

Compact, Green Mode, Fairchild Power Switch (FPS™)

Features

Applications

Related Application Notes

Ordering Information

Part Number

For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.

FSQ500L

Single Chip 700V SenseFET Power Switch

Precision Fixed Operating Frequency: 130kHz

No-load consumption 250mW at 265V

Burst Mode and Down to 60mW with External Bias

Internal Startup Switch

Soft-Start Time Tuned by External Capacitor

Under-Voltage Lockout (UVLO) with Hysteresis

Pulse-by-Pulse Current Limit

Overload Protection (OLP) and Internal Thermal

Shutdown Function (TSD) with Hysteresis

Auto-Restart Mode

No Need for Auxiliary Bias Winding

Cost-Effective Linear Power Supplies Replacement

Charger and Adapter for Mobile Phone, PDA, MP3,

and Cordless Phone

AN-4137, AN-4141, AN-4147,AN-6075 (Flyback)

AN-4138 (Charger)

Temperature Range

-40°C to +85°C

Operating

with

Eco Status

RoHS

Description

The FSQ500L is specially designed for a replacement

of linear power supplies with low cost. This device

combines current-mode Pulse Width Modulator (PWM)

with a senseFET. The integrated PWM controller

features include: a fixed oscillator, Under Voltage

Lockout (UVLO) protection, Overload Protection (OLP),

Leading-Edge Blanking (LEB), an optimized gate turn-

on/turn-off driver, Thermal Shutdown (TSD) protection

with

precision-current sources for loop compensation. When

compared to a linear power supply, the FSQ500L

device reduces total size and weight, while increasing

efficiency, productivity, and system reliability. This

device provides a basic platform for cost-effective

flyback converters.

Notes:

Adapter

2.5W

230Vac ± 15%

The junction temperature can limit the maximum

output power.

230V

Typical continuous power in a non-ventilated

enclosed adapter measured at 50°C ambient.

Maximum practical continuous power in an open

frame design at 50°C ambient.

hysteresis,

Package (SOT223-4L)

4-Lead, Small Outline

(3)

or 100/115V

Maximum Output Power

Package

Frame

Open

3.0W

(2)

and

(4)

with doubler.

temperature-compensated

Adapter

2.0W

Packing Method

85-265V

(3)

Tape & Reel

(1)

www.fairchildsemi.com

February 2009

Frame

Open

2.5W

(4)

Related parts for FSQ500L_09

FSQ500L_09 Summary of contents

Page 1

FSQ500L Compact, Green Mode, Fairchild Power Switch (FPS™) Features Single Chip 700V SenseFET Power Switch Precision Fixed Operating Frequency: 130kHz No-load consumption 250mW at 265V Burst Mode and Down to 60mW with External Bias Internal Startup Switch Soft-Start Time Tuned ...

Page 2

Application Circuit Diagram AC IN Internal Block Diagram © 2008 Fairchild Semiconductor Corporation FSQ500L • Rev. 1.0.1 D PWM V GND Figure 1. Typical Application Circuit Figure 2. Internal Block Diagram 2 DC OUT www.fairchildsemi.com ...

Page 3

Pin Assignments Pin Definitions Pin # Name 1 GND This pin is the control ground and the senseFET source. High-voltage power senseFET drain connection. In addition, at startup, the internal high-voltage current source supplies internal bias and charges the external ...

Page 4

Absolute Maximum Ratings The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not ...

Page 5

Electrical Characteristics T = 25°C unless otherwise specified. J Symbol Parameter SenseFET Section BV Drain-Source Breakdown Voltage DSS I Zero-Gate-Voltage Drain Current DSS R Drain-Source On-State Resistance DS(ON) (8) C Input Capacitance ISS (8) C Output Capacitance OSS (8) t ...

Page 6

Typical Performance Characteristics These characteristic graphs are measured at T Operating Supply Current (I 490 470 450 430 410 390 370 -40 -25 - Temperature (℃) Figure 4. Operating Supply Current (I vs. Temperature UVLO Threshold Voltage ...

Page 7

Typical Performance Characteristics These characteristic graphs are measured at T Maximum Duty Ratio (D 64.0 63.0 62.0 61.0 60.0 59.0 58.0 57.0 56.0 -40 -25 - Temperature (℃) Figure 10. Maximum Duty Ratio (D Peak Current Limit ...

Page 8

Functional Description 1. Startup and V Regulation: At startup, an internal CC high-voltage current source supplies the internal bias and charges the external capacitor (C the V pin, as illustrated in Figure 15. An internal high- CC voltage regulator (HV/REG) ...

Page 9

Overload Protection (OLP): Overload is defined as the load current exceeding its normal level due to an unexpected abnormal event. In this situation, the protection circuit should trigger to protect the SMPS. However, even when the SMPS is in ...

Page 10

Burst Operation: To minimize power dissipation in standby mode, the FPS enters burst-mode operation. During the burst mode operation the load decreases, the feedback FB(Normal) voltage decreases. As shown in Figure 21, the device ...

Page 11

Package Dimensions Figure 22. 4-Lead, Small Outline Package (SOT223-4L) Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact ...

Page 12

Fairchild Semiconductor Corporation FSQ500L • Rev. 1.0.1 12 www.fairchildsemi.com ...

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