FSQ510M - Fairchild Semiconductor

January 2009

FSQ510, FSQ510H, and FSQ510M • Rev. 1.3.0

FSQ510, FSQ510H, and FSQ510M — Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter

FSQ510, FSQ510H, and F SQ510M

Green Mode Fairchild Power Switch (FPS™)

for Valley Switching Converter – Low EMI and High Efficiency

Features

 Uses an LDMOS Integrated Power Switch

 Optimized for Valley Switching Converter (VSC)

 Low EMI through Variable Frequency Control and

Inherent Frequency Modulation

 High Efficiency through Minimum Drain Voltage

Switching

 Extended Valley Switching for Wide Load Ranges

 Small Frequency Variation for Wide Load Ranges

 Advanced Burst-Mode Operation for Low Standby

Power Consumption

 Pulse-by-Pulse Current Limit

 Protection Functions: Overload Protection (OLP),

Internal Thermal Shutdown (TSD) with Hysteresis

 Under-Voltage Lockout (UVLO) with Hysteresis

 Internal Startup Circuit

 Internal High-Voltage SenseFET: 700V

 Built-in Soft-Start: 5ms

Applications

 Auxiliary Power Supplies for LCD TV, LCD Monitor,

Personal Computer, and White Goods

Description

A Valley Switching Converter (VSC) generally shows

lower EMI and higher power conversion efficiency than

a conventional hard-switched converter with a fixed

switching frequency. The FSQ510 (H or M) is an

integrated valley switching pulse width modulation (VS-

PWM) controller and SenseFET specifically designed

for offline switch-mode power supplies (SMPS) for

valley switching with minimal external components. The

VS-PWM controller includes an integrated oscillator,

under-voltage lockout (UVLO), leading-edge blanking

(LEB), optimized gate driver, internal soft-start,

temperature-compensated precise current sources for

loop compensation, and self-protection circuitry.

Compared with discrete MOSFET and PWM controller

solutions, the FSQ510 (H or M) can reduce total cost,

component count, size and weight; while simultaneously

increasing efficiency, productivity, and system reliability.

This device provides a platform for cost-effective designs

of a valley switching flyback converters.

Ordering Information

Output Power Table (1)

230VAC ± 15%(2) 85-265VAC

Part

Number Package

Eco

Status

Operating

Junction

Temperature

Current

Limit RDS(ON)

(MAX) Adapter(3) Open

Frame(4) Adapter(3) Open

Frame(4)

Replaces

Devices

FSQ510 7-DIP FSD210B

FSQ510H 8-DIP FSD210DH

FSQ510M 7-MLSOP

RoHS -40 to +130°C320mA 32Ω 5.5W 9W 4W 6W

FSD210BM

For Fairchild’s defini t i on of “green” Eco St atus, pleas e visit: http://www.fairchildsemi.com/company/green/rohs_green.html.

Notes:

1. The junction temperature can limit the maximum output power.

2. 230VAC or 100/115VAC with voltage doubler.

3. Typical continuous power with a Fairchild charger evaluation board described in this datasheet in a non-

ventilated, enclosed adapter housing, measured at 50°C ambient temperature.

4. Maximum practical continuous power for auxiliary power supplies in an open-frame design at 50°C ambient temperature.

FSQ510, FSQ510H, and FSQ510M • Rev. 1.3.0 2

FSQ510, FSQ510H, and FSQ510M — Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter

Application Circuit

Vcc

GND

Sync

-PWM

Vfb

Vstr

Figure 1. Typical Application Circuit

Internal Block Diagram

OSC

sense

(0.4V)

OLP TSD

LEB

delay

R360ns

S/S

5ms

UVLO V

REF

7 (8)

8 (1)

str

GND

5 (7)

(2)

0.85V / 0.75V

4.7V

REF

A/R

4 (3)

Sync

0.7V / 0.1V 8.7V / 6.7V

1,2

(4,5,6)

200ns

delay

n(m):n stands for the pin num ber of 7-DIP and 7-MLSOP

m stands for the pin numbe r of 8-DIP

Figure 2. Internal Block Diagram

FSQ510, FSQ510H, and FSQ510M • Rev. 1.3.0 3

FSQ510, FSQ510H, and FSQ510M — Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter

Pin Assignments

GND

Vfb

Sync

Vstr

FSQ510H Vcc

GND

Figure 3. Package Diagrams for FSQ510(M) and FSQ510H

Pin Definitions

7-Pin 8-Pin Name Description

1, 2 4, 5, 6 GND This pin is the control ground and the SenseFET source.

3 2 Vfb

This pin is internally connected to the inverting input of the PWM

comparator. The collector of an opto-coupler is typically tied to this

pin. For stable operation, a capacitor should be placed between this

pin and GND. If the voltage of this pin reaches 4.7V, the overload

protection triggers, which shuts down the FPS.

4 3 Sync

This pin is internally connected to the sync-detect comparator for

valley switching. In normal valley-switching operation, the threshold of

the sync comparator is 0.7V/0.1V.

5 7 VCC

This pin is the positive supply input. This pin provides internal

operating current for both startup and steady-state operation.

7 8 D High-voltage power SenseFET drain connection.

8 1 Vstr

This pin is connected directly, or through a resistor, to the high-

voltage DC link. At startup, the internal high-voltage current source

supplies internal bias and charges the external capacitor connected

to the VCC pin. Once VCC reaches 8.7V, the internal current source is

disabled.

FSQ510, FSQ510H, and FSQ510M • Rev. 1.3.0 4

FSQ510, FSQ510H, and FSQ510M — Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be

operable above the recommended operating conditions and stressing the parts to these levels is not recommended.

In addition, extended exposure to stresses above the recommended operating conditions may affect device

reliability. The absolute maximum ratings are stress ratings only.

Symbol Parameter Min. Max. Unit

VSTR Vstr Pin Voltage 500 V

VDS Drain Pin Voltage 700 V

VCC Supply Voltage 20 V

VFB

Feedback Voltage Range -0.3 Internally

Clamped(5) V

VSync Sync Pin Voltage -0.3 6.5 V

7-DIP

7-MLSOP 1.38

PD Total Power Dissipation

8-DIP 1.47

Maximum Junction Temperature +150

TJ Recommended Operating Junction

Temperature(6) -40 +140 °C

TSTG Storage Temperature -55 +150 °C

Notes:

5. VFB is internally clamped at 6.5V (ICLAMP_MAX<100uA) which has a tolerance between 6.2V and 7.2V.

6. The maximum value of the recommended operating junction temperature is limited by thermal shutdown.

Thermal Impedance

TA=25°C unless otherwise specified. Items are tested with the standards JESD 51-2 and 51-10 (DIP).

Symbol Parameter Value Unit

7-DIP, 7-MLSOP

θJA Junction-to-Ambient Thermal Impedance(7) 90 °C/W

θJC Junction-to-Case Thermal Impedance(8) 13 °C/W

8-DIP

θJA Junction-to-Ambient Thermal Impedance(7) 85 °C/W

θJC Junction-to-Case Thermal Impedance(8) 13 °C/W

Notes:

7. Free-standing with no heatsink; without copper clad; measurement condition - just before junction temperature

TJ enters into TSD.

8. Measured on the DRAIN pin close to plastic interface.

FSQ510, FSQ510H, and FSQ510M • Rev. 1.3.0 5

FSQ510, FSQ510H, and FSQ510M — Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter

TElectrical Characteristics

T J=25°C unless otherwise specified.

Symbol Parameter Conditions Min. Typ. Max. Unit

SenseFET Section

BVDSS Drain-Source Breakdown Voltage VCC=0V, ID=100μA 700 V

IDSS Zero-Gate-Voltage Drain Current VDS=700V 150

μA

TJ=25°C, ID=180mA 28 32 

RDS(ON) Drain-Source On-State Resistance TJ=100°C, ID=180mA 42 48 

CISS Input Capacitance(9) V

GS=11V 96 pF

COSS Output Capacitance(9) V

DS=40V 28 pF

tr Rise Time(9) V

DS=350V, ID=25mA 100 ns

tf Fall Time(9) V

DS=350V, lD=25mA 50 ns

Control Section

fS Initial Switching Frequency VCC=11V, VFB=5V, Vsync=0V 87.7 94.3 100.0 kHz

ΔfS Switching Frequency Variation(9) -25°C < TJ < 125°C ±5 ±8 %

IFB Feedback Source Current VCC=11V, VFB=0V 200 225 250 μA

tBB Switching Blanking Time VCC=11V, VFB=1V,

Vsync Frequency Sweep 7.2 7.6 8.2 μs

tBW Valley Detection Window Time(9) 3.0 μs

DMAX Maximum Duty Ratio VCC=11V, VFB=3V 54 60 66 %

DMIN Minimum Duty Ratio VCC=11V, VFB=0V 0 %

VSTART VFB=0V, VCC Sweep 8.0 8.7 9.4 V

VSTOP UVLO Threshold Voltage After Turn-on, VFB=0V 6.0 6.7 7.4 V

tS/S Internal Soft-Start Time VSTR=40V, VCC Sweep 3 5 7 ms

Burst-Mode Section

VBURH 0.75 0.85 0.95 V

VBURL 0.65 0.75 0.85 V

HYS

Burst-Mode Voltage VCC=11V, VFB Sweep

100 mV

Protection Section

ILIM Peak Current Limit di/dt=90mA/µs 280 320 360 mA

VSD Shutdown Feedback Voltage VDS=40V, VCC=11V,

VFB Sweep 4.2 4.7 5.2 V

FSQ510H 4 5 6

IDELAY Shutdown Delay

Current FSQ510(M) VCC=11V, VFB=5V 3.5 4.5 5.5 μA

tLEB Leading-Edge Blanking Time(9) 360 ns

TSD 130 140 150 °C

HYS Thermal Shutdown Temperature(9) 60 °C

Synchronous Section

VSH VCC=11V, VFB=1V 0.55 0.70 0.85 V

VSL Synchronous Threshold Voltage VCC=11V, VFB=1V 0.05 0.10 0.15 V

tSync Synchronous Delay Time 180 200 220 ns

Total Device Section

IOP Operating Supply Current

(Control Part Only) VCC=11V, VFB=5.5V 0.8 1.0 mA

ICH Startup Charging Current VCC=VFB=0V,VSTR=40V 1.0 1.2 mA

VSTR Supply Voltage VCC=VFB=0V, VSTR Sweep 27 V

Note:

9. These parameters, although guaranteed, are not 100% tested in production.

FSQ510, FSQ510H, and FSQ510M • Rev. 1.3.0 6

FSQ510, FSQ510H, and FSQ510M — Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter

Comparison between FSD210B and FSQ510

Function FSD210B FSQ510 Advantages of FSQ510

Control Mode Voltage Mode Current Mode Fast Response

Easy-to-Design Control Loop

Operation Method Constant Frequency

PWM

Valley Switching

Operation

Turn-on at Minimum Drain Voltage

High Efficiency and Low EMI

EMI Reduction

Method

Frequency

Modulation Valley Switching

Frequency Variation Depending on the Ripple

of DC Link Voltage

High Efficiency and Low EMI

Soft-Start 3ms (Built-in) 5ms (Built-in) Longer Soft-Start Time

Protection TSD TSD with Hysteresis Enhanced Thermal Shutdown Protection

Power Balance Long TCLD Short TCLD Small Difference of Input Power between the

Low and High Input Voltage Cases

Power Ratings

Less than 5W

Under Open-Frame

Condition at the

Universal Line Input

More than 6W

Under Open-Frame

Condition at the

Universal Line Input

More Output Power Rating Available due to the

Valley Switching

FSQ510, FSQ510H, and FSQ510M • Rev. 1.3.0 7

FSQ510, FSQ510H, and FSQ510M — Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter

Typical Performance Characteristics

Characteristic graphs are normalized at TA=25°C.

0.80

0.85

0.90

0.95

1.00

1.05

1.10

1.15

1.20

-40 -25 0 25 50 75 100 125

Temperature [℃]

Normalized

0.80

0.85

0.90

0.95

1.00

1.05

1.10

1.15

1.20

-40 -25 0 25 50 75 100 125

Temperature [℃]

Normalized

Figure 4. Operating Frequency (fOSC) vs. TA Figure 5. Peak Current Limit (ILIM) vs. TA

0.80

0.85

0.90

0.95

1.00

1.05

1.10

1.15

1.20

-40 -25 0 25 50 75 100 125

Temperature [℃]

Normalized

0.80

0.85

0.90

0.95

1.00

1.05

1.10

1.15

1.20

-40 -25 0 25 50 75 100 125

Temperature [℃]

Normalized

Figure 6. Start Threshold Voltage (VSTART) vs. TA Figure 7. Stop Threshold Voltage (VSTOP) vs. TA

0.80

0.85

0.90

0.95

1.00

1.05

1.10

1.15

1.20

-40 -25 0 25 50 75 100 125

Temperature [℃]

Normalized

0.80

0.85

0.90

0.95

1.00

1.05

1.10

1.15

1.20

-40 -25 0 25 50 75 100 125

Temperature [℃]

Normalized

Figure 8. Shutdown Feedback Voltage (VSD) vs. TA Figure 9. Maximum Duty Cycle (DMAX) vs. TA

FSQ510, FSQ510H, and FSQ510M • Rev. 1.3.0 8

FSQ510, FSQ510H, and FSQ510M — Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter

Typical Performance Characteristics (Continued)

0.80

0.85

0.90

0.95

1.00

1.05

1.10

1.15

1.20

-40 -25 0 25 50 75 100 125

Temperature [℃]

Normalized

0.80

0.85

0.90

0.95

1.00

1.05

1.10

1.15

1.20

-40 -25 0 25 50 75 100 125

Temperature [℃]

Normalized

Figure 10. Feedback Source Current (IFB) vs. TA Figure 11. Shutdown Delay Current (IDELAY) vs. TA

0.80

0.85

0.90

0.95

1.00

1.05

1.10

1.15

1.20

-40 -25 0 25 50 75 100 125

Temperature [℃]

Normalized

Figure 12. Operating Supply Current (IOP) vs. TA

FSQ510, FSQ510H, and FSQ510M • Rev. 1.3.0 9

FSQ510, FSQ510H, and FSQ510M — Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter

Functional Description

1. Startup: At startup, an internal high-voltage current

source supplies the internal bias and charges the

external capacitor (Ca) connected to the VCC pin, as

illustrated in Figure 13. When VCC reaches 8.7V, the

FPS begins switching and the internal high-voltage

current source is disabled. The FPS continues normal

switching operation and the power is supplied from the

auxiliary transformer winding unless VCC goes below the

stop voltage of 6.7V.

6.7V/

8.7V

Vref

Internal

Bias

VCC 8Vstr

ICH

VCC good

VDC

Figure 13. Startup Block

2. Feedback Control: This device employs current-

mode control, as shown in Figure 14. An opto-coupler

(such as the FOD817) and shunt regulator (such as the

KA431) are typically used to implement the feedback

network. Comparing the feedback voltage with the

voltage across the Rsense resistor makes it possible to

control the switching duty cycle. When the reference pin

voltage of the shunt regulator exceeds the internal

reference voltage of 2.5V, the opto-coupler LED current

increases, pulling down the feedback voltage and

reducing the drain current. This typically occurs when the

input voltage is increased or the output load is decreased.

2.1 Pulse-by-Pulse Current Limit: Because current-

mode control is employed, the peak current through the

SenseFET is limited by the inverting input of PWM

comparator (VFB*), as shown in Figure 14. Assuming

that the 225µA current source flows only through the

internal resistor (6R + R=12.6kΩ), the cathode voltage

of diode D2 is about 2.8V. Since D1 is blocked when

the feedback voltage (VFB) exceeds 2.8V, the maximum

voltage of the cathode of D2 is clamped at this voltage,

clamping VFB*. Therefore, the peak value of the current

through the SenseFET is limited.

2.2 Leading-Edge Blanking (LEB): At the instant the

internal SenseFET is turned on, a high-current spike

usually occurs through the SenseFET, caused by

primary-side capacitance and secondary-side rectifier

reverse recovery. Excessive voltage across the Rsense

resistor would lead to incorrect feedback operation in

the current mode VS-PWM control. To counter this

effect, the FPS employs a leading-edge blanking

(LEB) circuit to inhibit the VS-PWM comparator for a

short time (tLEB) after the SenseFET is turned on.

OSC

ref

delay

Gate

driver

OLP

D1 D 2

KA431

FOD817

sense

SenseFET

ref

VS signal

Figure 14. Valley Switching Pulse-Width

Modulation (VS-PWM) Circuit

3. Synchronization: The FSQ510 (H or M) employs a

valley-switching technique to minimize the switching

noise and loss. The basic waveforms of the valley

switching converter are shown in Figure 15. To

minimize the MOSFET switching loss, the MOSFET

should be turned on when the drain voltage reaches its

minimum value, as shown in Figure 15. The minimum

drain voltage is indirectly detected by monitoring the

VBCCB winding voltage, as shown in Figure 15.

VDC

VRO

VDS

0.7V

VSync

200ns Delay

0.1V

MOSFET

Gate

Figure 15. Valley Switching Waveforms

FSQ510, FSQ510H, and FSQ510M • Rev. 1.3.0 10

FSQ510, FSQ510H, and FSQ510M — Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter

4. Protection Circuits: The FSQ510 (H or M) has two

self-protective functions, overload protection (OLP) and

thermal shutdown (TSD). The protections are

implemented as auto-restart mode. Once the fault

condition is detected, switching is terminated and the

SenseFET remains off. This causes VCC to fall. When

VBCCB falls down to the under-voltage lockout (UVLO) stop

voltage of 6.7V, the protection is reset and the startup

circuit charges the VCC capacitor. When VCC reaches

the start voltage of 8.7V, the FSQ510 (H or M) resumes

normal operation. If the fault condition is not removed,

the SenseFET remains off and VCC drops to stop

voltage again. In this manner, the auto-restart can

alternately enable and disable the switching of the

power SenseFET until the fault condition is eliminated.

Because these protection circuits are fully integrated

into the IC without external components, reliability is

improved without increasing cost.

Fault

situation

6.7V

8.7V

Fault

occurs Fault

removed

Normal

operation

Normal

operation

Power

Figure 16. Auto Restart Protection Waveforms

4.1 Overload Protection (OLP): Overload is defined as

the load current exceeding its normal level due to an

unexpected event. In this situation, the protection circuit

should trigger to protect the SMPS. However, even

when the SMPS is in the normal operation, the overload

protection circuit can be triggered during the load

transition. To avoid this undesired operation, the

overload protection circuit is designed to trigger only

after a specified time to determine whether it is a

transient situation or a true overload situation. Because

of the pulse-by-pulse current limit capability, the

maximum peak current through the SenseFET is limited

and, therefore, the maximum input power is restricted

with a given input voltage. If the output consumes more

than this maximum power, the output voltage (Vo)

decreases below the set voltage. This reduces the

current through the opto-coupler LED, which also

reduces the opto-coupler transistor current, increasing

the feedback voltage (VFB). If VFB exceeds 2.8V, D1 is

blocked and the 5µA current source starts to charge CB

slowly up. In this condition, VFB continues increasing

until it reaches 4.7V, when the switching operation is

terminated, as shown in Figure 17. The delay time for

shutdown is the time required to charge CB from 2.8V to

4.7V with 5µA. A 20 ~ 50ms delay time is typical for

most applications. This protection is implemented in

auto-restart mode.

VFB

2.8V

4.7V

Overload Protection

t12= CB•(4.7-2.8)/Idelay

t1t2

Figure 17. Overload Protection

4.2 Thermal Shutdown (TSD): The SenseFET and the

control IC on a die in one package make it easy for the

control IC to detect the abnormal over temperature of

the SenseFET. If the temperature exceeds

approximately 140°C, the thermal shutdown triggers

and the FPS stops operation. The FPS operates in

auto-restart mode until the temperature decreases to

around 80°C, when normal operation resumes.

5. Soft-Start: The FPS has an internal soft-start circuit

that increases the VS-PWM comparator inverting input

voltage, together with the SenseFET current, slowly

after it starts up. The typical soft-start time is 5ms. The

pulse width to the power switching device is

progressively increased to establish the correct working

conditions for transformers, inductors, and capacitors.

The voltage on the output capacitors is progressively

increased with the intention of smoothly establishing the

required output voltage. This helps prevent transformer

saturation and reduces stress on the secondary diode

during startup.

6. Burst-Mode Operation: To minimize power

dissipation in standby mode, the FPS enters burst-

mode operation. As the load decreases, the feedback

voltage decreases. As shown in Figure 18, the device

automatically enters burst mode when the feedback

voltage drops below VBURL (750mV). At this point,

switching stops and the output voltages start to drop at

a rate dependent on standby current load. This causes

the feedback voltage to rise. Once it passes VBURH

(850mV), switching resumes. The feedback voltage

then falls and the process repeats. Burst mode

alternately enables and disables switching of the

SenseFET, reducing switching loss in standby mode.

FSQ510, FSQ510H, and FSQ510M • Rev. 1.3.0 11

FSQ510, FSQ510H, and FSQ510M — Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter

VFB

Vds

0.75V

0.85V

Ids

Voset

time

Switching

disabled Switching

disabled t4

Figure 18. Burst-Mode Operation

7. Advanced Valley Switching Operation: To

minimize switching loss and Electromagnetic

Interference (EMI), the MOSFET turns on when the

drain voltage reaches its minimum value in VS

converters. Due to the Discontinuous Conduction Mode

(DCM) operation, the feedback voltage is not changed,

despite the DC link voltage ripples, if the load condition

is not changed. Since the slope of the drain current is

changed depending on the DC link voltage, the turn-on

duration of MOSFET is variable with the DC link voltage

ripples. The switching period is changed continuously

with the DC link voltage ripples. Not only the switching

at the instant of the minimum drain voltage, but also the

continuous change of the switching period, reduces

EMI. VS converters inherently scatter the EMI spectrum.

Typical products for VSC turn the MOSFET on when the

first valley is detected. In this case, the range of the

switching frequency is very wide as a result of the load

variations. At a very light-load, for example, the

switching frequency can be as high as several hundred

kHz. Some products for VSC, such as Fairchild’s

FSCQ-series, define the turn-on instant of SenseFET

change at the first valley into at the second valley, when

the load condition decreases under its predetermined

level. The range of switching frequency narrows

somewhat. For details, consult an FSCQ-series

datasheet, such as:

http://www.fairchildsemi.com/pf/FS/FSCQ1265RT.html

The range of the switching frequency can be limited

tightly in FSQ-series. Because a kind of blanking time

(tB) is adopted, as shown in Figure 19, the switching

frequency has minimum and maximum values.

Once the SenseFET is enabled, the next start is

prohibited during the blanking time (tB). After the

blanking time, the controller finds the first valley within

the duration of the valley detection window time (tW)

(case A, B, and C). If no valley is found in tW, the

internal SenseFET is forced to turn on at the end of tBW

(case D). Therefore, FSQ510, FSQ510H, and

FSQ510M have minimum switching frequency of

94.3kHz and maximum switching frequency of 132kHz,

typically, as shown in Figure 20.

smax

=10.6µs

smax

=10.6µs

=7.6µs

s_A

=7.6µs

s_B

=7.6µs

s_C

=7.6µs

=3µs

Figure 19. Advanced VS Operation

94.3kHz

132kHz

104 k Hz

Burst

mode

Constant

frequency

When the resonant period is 2µs

Figure 20. Switching Frequency Range of the

Advanced Valley Switching

FSQ510, FSQ510H, and FSQ510M • Rev. 1.3.0 12

FSQ510, FSQ510H, and FSQ510M — Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter

Package Dimensions

Figure 21. 7-Lead, Dual In-line Package (DIP)

Pack age drawings are provided as a service to customers consideri ng Fai rchild components . Drawings may c hange i n any manner

without notice. P l ease note the revi sion and/or date on t he drawing and contac t a Fairchild S emiconductor represent ative to v er ify

or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically

the warranty therein, which covers Fairchild products.

Always vis i t Fairchild S emiconductor’s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/packaging/.

FSQ510, FSQ510H, and FSQ510M • Rev. 1.3.0 13

FSQ510, FSQ510H, and FSQ510M — Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter

Package Dimensions (Continued)

5.08 MAX

0.33 MIN

2.54

7.62

0.56

0.355

1.65

1.27

3.683

3.20

3.60

3.00

6.67

6.096

9.83

9.00

7.62

9.957

7.87

0.356

0.20

NOTES: UNLESS OTHERWISE SPECIFIED

A) THIS PACKAGE CONFORMS TO

JEDEC MS-001 VARIATION BA

B) ALL DIMENSIONS ARE IN MILLIMETERS.

C) DIMENSIONS ARE EXCLUSIVE OF BURRS,

MOLD FLASH, AND TIE BAR EXTRUSIONS.

D) DIMENSIONS AND TOLERANCES PER

ASME Y14.5M-1994

8.255

7.61

E) DRAWING FILENAME AND REVSION: MKT-N08FREV2.

(0.56)

Figure 22. 8-Lead, Dual In-line Package (DIP)

Pack age drawings are provided as a service to customers consideri ng Fai rchild components . Drawings may c hange i n any manner

without notice. P l ease note the revi sion and/or date on t he drawing and contac t a Fairchild S emiconductor represent ative to v er ify

or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically

the warranty therein, which covers Fairchild products.

Always vis i t Fairchild S emiconductor’s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/packaging/.

FSQ510, FSQ510H, and FSQ510M • Rev. 1.3.0 14

FSQ510, FSQ510H, and FSQ510M — Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter

Package Dimensions (Continued)

MKT-MLSOP07ArevA

Figure 23. 7-Lead, MLSOP

Pack age drawings are provided as a service to customers consideri ng Fai rchild components . Drawings may c hange i n any manner

without notice. P l ease note the revi sion and/or date on t he drawing and contac t a Fairchild S emiconductor representative to verify

or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically

the warranty therein, which covers Fairchild products.

Always vis i t Fairchild S emiconductor’s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/packaging/.

FSQ510, FSQ510H, and FSQ510M • Rev. 1.3.0 15

FSQ510, FSQ510H, and FSQ510M — Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter