Features: ` PC half-bridge (or 494) power supply supervisor + two 431 + PWM
` High integration & 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
ApplicationSwitching mode power supply for computers:
· AT
· NLX
· SFX (micro-ATX)Pinout
Specifications
|
Symbol |
Parameter |
Value |
Unit |
|
VCC |
Output Current at PG, Fb1, Fb2 Pins |
16 |
V |
|
IOUT |
Output Current at PG, Fb1, Fb2 Pins |
30 |
mA |
|
VPIN
|
V12, OP1, OP2, VPIN FB1, FB2, SS |
-0.3 to 16 |
V |
| PSON, V33, V5, VREF1, VREF2, OPP, UVAC, RI, NVP, IN, COMP, PG |
-0.3 to 7 |
V |
|
PD,25 |
Power Dissipation (TA=25°C) |
1.5 |
W |
|
PD90 |
Power Dissipation (TA=90°C) |
0.5
|
W |
| TSTG |
Storage Temperature Range |
-55 to +150 |
°C |
|
RJA |
Thermal Resistance, Junction-To-Air |
82.5 |
°C /W |
|
TJ,MAX |
Operating Junction Temperature |
150 |
°C |
| TA,MAX |
Operating Ambient Temperature |
-30 to +125 |
°C |
|
TL |
Lead Temperature (Soldering, 10 Seconds) |
260 |
°C |
|
ESD |
Electrostatic Discharge Capability, Machine Model |
3.0 |
KV |
* All voltage values, except differential voltages, are given with respect to GND pin.
* Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device.
| SG6105ADZ |
Full Production |
RoHS Compliant |
$0.34 |
DIP |
20 |
RAIL |
|
Line 1: SG6105ADZ Line 2: A3&6&3&Z |
* Fairchild 1,000 piece Budgetary Pricing
|
| ** A sample button will appear if the part is available through Fairchild's on-line samples program. If there is no sample button, please contact a Fairchild distributor to obtain samples |
Package marking information for product SG6105A is available. Click here for more information . |
DescriptionSG6105A 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, powergood 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 from SG6105A 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 the MTBF for power supply.
SG6105A Data Sheet
