SG6105ADZ Fairchild Semiconductor, SG6105ADZ Datasheet

IC POWER SUPPLY SUPERVISOR 20DIP

SG6105ADZ

Manufacturer Part Number
SG6105ADZ
Description
IC POWER SUPPLY SUPERVISOR 20DIP
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of SG6105ADZ

Applications
Power Supply, Supervisor
Voltage - Supply
4.5 V ~ 5.5 V
Current - Supply
5mA
Operating Temperature
-25°C ~ 85°C
Mounting Type
Through Hole
Package / Case
20-DIP (0.300", 7.62mm)
Mounting Style
Through Hole
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Input
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
© 2008 Fairchild Semiconductor Corporation
SG6105A • Rev. 1.0.2
SG6105A
Power Supply Supervisor + Regulator + PWM
Features
Applications
Switching mode power supply for computers:
Ordering Information
SG6105ADZ
SG6105ADY
Number
For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
PC Half-Bridge (or 494) Power Supply Supervisor +
two 431 + PWM
High Integration with Few External Components
Over-Voltage Protection for 3.3V, 5V, and 12V
Under-Voltage Protection for 3.3V, 5V, and 12V
Under-Voltage Protection for -12V and/or -5V
Over-Power and Short-Circuit Protection
Power-Down Warning Circuitry
Power-Good Circuitry
Delay Time for PSON and PG Signal
Remote ON/OFF Function
On-Chip Oscillator and Error Amplifier
Two Shunt Regulators for 3.3V and 5V-Standby
Latching PWM for Cycle-by-Cycle Switching
Push-Pull PWM Operation and Totem Pole Outputs
Soft-Start and Maximum 93% Duty Cycle
AT
NLX
SFX (micro-ATX)
Part
Temperature
-40 to +105°C
-40 to +105°C
Operating
Range
Eco Status
Green
RoHS
20-pin Dual In-Line Package (DIP)
20-pin Dual In-Line Package (DIP)
Description
SG6105A controller is designed for switching-mode
power supplies for desktop PCs. It provides all the
functions necessary to monitor and control the output of
the power supply. Remote ON/OFF control, power-good
circuitry, and protection features against over-voltage
and over-power are implemented. It directly senses all
the output rails for OVP without the need for external
dividers. An innovative AC-signal sampling circuitry
provides a sufficient power-down warning signal for PG.
A built-in timer generates accurate timing for the control
circuit, including the PS-off delay. The cycle-by-cycle
PWM switching prevents the power transformer from
saturation and ensures the fastest response for the
short-circuit protection, which greatly reduces stress for
power transistors. Two internal precision TL431 shunt
regulators provide stable reference voltage and a driver
for 3.3V and 5V standby regulation.
Utilizing minimum external components, the SG6105A
includes the functions for push-pull and/or half-bridge
topology, decreasing production cost and PCB space,
and
increasing
Package
the
MTBF
for
Packing Method
power
Tube
Tube
July 2009
www.fairchildsemi.com
supply.

Related parts for SG6105ADZ

SG6105ADZ Summary of contents

Page 1

... NLX SFX (micro-ATX) Ordering Information Operating Part Temperature Number Range SG6105ADZ -40 to +105°C SG6105ADY -40 to +105°C For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html. © 2008 Fairchild Semiconductor Corporation SG6105A • Rev. 1.0.2 Description SG6105A controller is designed for switching-mode power supplies for desktop PCs ...

Page 2

... Application Diagram © 2008 Fairchild Semiconductor Corporation SG6105A • Rev. 1.0.2 Figure 1. Typical Application 2 www.fairchildsemi.com ...

Page 3

... Protector 3.2V 5V NVP 64μA 2.1V 6 Buffer 2.4V 4 Buffer OPP Delay 15ms V CC PSON 1.4V On/Off Delay 50ms 1 16ms © 2008 Fairchild Semiconductor Corporation SG6105A • Rev. 1.0 2μA 0. SET Delay CLR 2.5V 7ms Delay 7ms Delay 2ms Figure 2. Function Block Diagram 3 ...

Page 4

... Marking Information 20 SG6105ATP XXXXXXXXYWWV 1 ※Marking for SG6105ADZ (Pb-free) ※Marking for SG6105ADY(Green compound) Pin Configuration © 2008 Fairchild Semiconductor Corporation SG6105A • Rev. 1.0 Null=Regular Ppackage XXXXXXXX: Wafer Lot Y: Year; WW: Week V: Assembly Location F- Fairchild Logo Z- Plant Code X- 1 Digit Year Code Y- 1 Digit Week Code ...

Page 5

... Soft-start, settable through an external capacitor. The current source output at this pin is 8µ and the voltage is clamped at 2.5V Connected to external resistor for the reference setting VCC Supply voltage. 4.5V ~ 5.5V connected to 5V-standby. © 2008 Fairchild Semiconductor Corporation SG6105A • Rev. 1.0.2 =75kΩ www.fairchildsemi.com ...

Page 6

... The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol T Operating Ambient Temperature Range A © 2008 Fairchild Semiconductor Corporation SG6105A • Rev. 1.0.2 Parameter (T =25° =90° ...

Page 7

... DEV, T REF (4) R Line Regulation EGLI- Output Sinking Current Capability OUT-FB Notes =(2/ (1/ OPPS OPP 4. Not tested in production. © 2008 Fairchild Semiconductor Corporation SG6105A • Rev. 1.0.2 Conditions PG High 3.3V 5.0V 12.0V 3.3V 5.0V 12.0V 3.3V 5.0V 12.0V V =1.5V (3) UVAC I =0.5mA, T =25° ...

Page 8

... Charge Current SS Comparator Section DC Duty Cycle PWM Output Section V Output Voltage Low OL V Output Voltage High OH R Output Impedance Note: 5. Not tested in production. © 2008 Fairchild Semiconductor Corporation SG6105A • Rev. 1.0.2 (Continued) Conditions R =75kΩ =100pF, Pull 2. (5) C =100pF, Pull 2. =5mA PG V ...

Page 9

... Figure 7. PWM Output Voltage vs. Temperature 89.500 89.450 89.400 89.350 89.300 89.250 89.200 89.150 89.100 -40 -25 - Temperature (°C) Figure 9. MAX Duty Cycle vs. Temperature © 2008 Fairchild Semiconductor Corporation SG6105A • Rev. 1.0 110 125 Figure 6. Reference Voltage vs. Temperature 67.000 66.000 65.000 64.000 63 ...

Page 10

... Temperature (°C) Figure 13 UVP 7.060 7.050 7.040 7.030 -40 -25 - Temperature (°C) Figure 15. 12V V UVP © 2008 Fairchild Semiconductor Corporation SG6105A • Rev. 1.0.2 (Continued) 4.180 4.160 4.140 4.120 4.100 110 125 vs. Temperature 110 125 vs. Temperature ...

Page 11

... Few external components. 14. More reliable system. 15. Little space on PCB. 16. Easy trouble-shooting and implementation. © 2008 Fairchild Semiconductor Corporation SG6105A • Rev. 1.0.2 Feature Descriptions 1. Over-voltage protection can be implemented without any additional components. Over- voltage sense levels for 3.3V, 5V, 12V, are 4.1V, 6.1V, 14.5V, respectively. ...

Page 12

... When OPPS voltage (p.4, Note-1) is higher than 2.1V and this situation exists for longer than 7ms, SG6105A pulls the PG low and locks off the power outputs. © 2008 Fairchild Semiconductor Corporation SG6105A • Rev. 1.0.2 topology and is connected to the ...

Page 13

... Timing Diagram VCC PSON 3.3V,5V,12V t PSON(ON) NVP SS(on/off VCC PSON UVAC OPP SS(on/off) PG © 2008 Fairchild Semiconductor Corporation SG6105A • Rev. 1.0.2 t PSON(OFF) t PSOFF Voltage < V UVAC Figure 20. Timing Diagram 13 t UVP t NVP t OPP www.fairchildsemi.com ...

Page 14

... Reference Circuit © 2008 Fairchild Semiconductor Corporation SG6105A • Rev. 1.0.2 Figure 21. Reference Circuit 14 www.fairchildsemi.com ...

Page 15

... BOM Reference D1,D2,D6 D3 D4,D5 D7,D8,D9,D10,D11 R10 R11 R12 R13 © 2008 Fairchild Semiconductor Corporation SG6105A • Rev. 1.0.2 Component Reference PR1004 R14 2A45V R15 30C40 R16 1N4148 R17 62KΩ 1/8W R18 3.2KΩ 1/8W R19 510Ω 1% R20 1.5KΩ 1% R21 100Ω ...

Page 16

... 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 a Fairchild Semiconductor 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 visit Fairchild Semiconductor’ ...

Page 17

... Fairchild Semiconductor Corporation SG6105A • Rev. 1.0.2 17 www.fairchildsemi.com ...

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