SG6518SZ
SG6518SZ Datasheet
SG6518 LCD Power Supply Supervisor
| Part | Datasheet |
|---|---|
SG6518SZ |
SG6518SZ (pdf) |
| Related Parts | Information |
|---|---|
SG6518DZ |
SG6518DZ |
| PDF Datasheet Preview |
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| SG6518 LCD Power Supply Supervisor December 2007 SG6518 LCD Power Supply Supervisor Two Adjustable Voltage Sense Input Pins VSV1 and VSV2 Over-voltage Protection OVP for 5V, 12V, and two outputs V1, V2 Over-current Protection OCP for 5V, 12V, and two outputs V1, V2 Adjustable Voltage Control Sense Input of V1 and V2 ADJ-V1, ADJ-V2 Open-drain Output for FPO Pin 13ms PSON Control Delay No Lockup During the Fast AC Power-on/off Wide Supply Voltage Range 4V to 15V Programmable Over-temperature Protection OTP SG6518 provides the over-voltage protection OVP for 5V, 12V, and outputs V1 and V2 as well as over-current protection OVP for 5V, 12V, and outputs V1 and V2. When the voltage of OTP pin decreases to 1.2V, the over-temperature protection OTP function is enabled. FPO is set to HIGH to turn off the PWM control IC. The voltage difference across the external current shunt is used for OCP functions. An external resistor can be used to adjust protection threshold. The power supply is turned on after a 13ms delay time when the PSON signal is set from LOW to HIGH. To turn off the power supply, PSON signal is set from HIGH to LOW with the delay time 13ms. Applications LCD Power Supply Ordering Information Operating Temperature Range SG6518DZ -40°C to +85°C SG6518SZ -40°C to +85°C All packages are lead free per JEDEC J-STD-020B standard. Package 16-DIP 16-SOP Packing Method Rail Reel & Tape SG6518 LCD Power Supply Supervisor Application Diagram Figure Typical Application Note R1 = and R2 = are suggested. C1 and C2 are suggested to be 100nF to 2.2uF. Internal Block Diagram Figure Function Block Diagram Note The VSV1 pin is the power pin for the two OCP comparators. 2007 Fairchild Semiconductor Corporation SG6518 LCD Power Supply Supervisor Pin Configuration Figure Pin Configuration Pin Definitions Pin # Name Description GND Ground. Fault protection output. Output signal to control the primary PWM IC through an opto-coupler. When FPO is LOW, the PWM IC is enabled. PSON Remote on/off logic input from CPU or main-board. The power supply is turned on/off after 13ms delay. VSV1 V1 voltage sense input. 4 5 ADJ-V1 over-voltage control sense input. Reference setting. One external resistor, Ri, connected between the RI and GND pins determines a reference current, IREF = 1.5V/Ri, for OCP programming. 7 ADJ-V2 over-voltage control sense input. VSV2 V2 voltage sense input. V2 over-current protection sense input. In typical applications, this pin is connected to the ISV2 positive end of a current shunt through one resistor. When the voltage on ISV2 is higher than that of VSV2 by 6mV, OCP is enabled. VSV1 over-current protection sense input. In typical applications, this pin is connected to the ISV1 positive end of a current shunt through one resistor. When the voltage on ISV1 is higher than that of VSV1 by 6mV, OCP is enabled. 12V over-current protection sense input. In typical applications, this pin is connected to the IS12 positive end of a current shunt through one resistor. When the voltage on IS12 is higher than that of VS12 by 6mV, OCP is enabled. VS12 12V over-voltage control sense input. |
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