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UNISONIC TECHNOLOGIES CO., LTD
3511 CMOS IC
www.unisonic.com.tw 1 of 8 Copyright © 2015 Unisonic Technologies Co., Ltd QW-R502-015.D PC POWER SUPPLY SUPERVISORS DESCRIPTION The UTC 3511 is designed to provide the voltage, and current supervisor function, power good output (PGO), fault protection latch (FPL_N), and protection detector function (PDON_N) control for switching power systems. For supervisor function, it prov ides the over voltage detector (OVD) monitoring for 3.3V, 5V, 12V; the under voltage detector (UVD) monitoring for 3.3V, 5V. When 3.3V or 5V voltage is decreasing to 2.69V, 4.3V res pectively, the under voltage detector (UVD) function will be enabled to reset the PGO signal from high to low,and the FPL_N is latched HIGH. When 3.3V, 5V or 12V voltage is increasing to 3. 9V, 6.1V or 13.4V respectively, the over voltage detector (OVD) function will be enabled to reset the PGO signal from high to low, and the FPL_N is latched HIGH. To achieve better immunity for lighting surge glitch and to prevent accidental power shut down during dynamic loading condition, the de-bounce time for UVD and OVD is 73us. The power supply is turned on after 38mS de-bounce time when FPL_N signal is set from high to low. FEATURES * Over Voltage Detector (OVD) for 3.3V, 5V, 12V. * Under Voltage Detector (UVD) for 3.3V, 5V. * Open Drain Output for PGO and FPL_N. * 300 ms power good delay. * 75 ms delay for 3.3V and 5V turn on. * 38 ms PDON_N control De-bounce. * 2.4 ms PDON_N control to FPL_N turn-off delay. * De-bounce time 73 μs for UVD/OVD. * Wide supply voltage range from 4V ~ 15V. DIP-8 SOP-8 ■ ORDERING INFORMATION Ordering Number Lead Free Halogen Free Package Packing 3511L-D08-T 3511G-D08-T DIP-8 Tube - 3511G-S08-R SOP-8 Tape Reel
UNISONIC TECHNOLOGIES CO., LTD 2 of 8 www.unisonic.com.tw Q W - R 5 0 2 - 0 1 5 . D MARKING DIP-8 SOP-8 PIN CONFIGURATION PGI GND FPL_N PDON_N V33 VDD PGO1 PIN DESCRIPTION PIN No. PIN NAME TYPE DESCRIPTION
1 PGI I Power good input pin
2 GND P Ground
3 FPL-N O Fault protection latch output pin (open drain output)
4 PDON-N I Protection detector function ON/OFF control input pin
5 V 33 I 3.3V input pin
6 V 5 I 5V input pin
7 V DD I Supply voltage/12V input pin
8 PGO O Power good output pin(open drain output)
UNISONIC TECHNOLOGIES CO., LTD 3 of 8 www.unisonic.com.tw Q W - R 5 0 2 - 0 1 5 . D BLOCK DIAGRAM PDON_N VDD 150μA 3.6V Power On Reset Vcc Low Voltage POR LVRST Clock Generator CLK PWR V33 VDD PGI 1.2V UN- CLK RST 73μs debounce CLK CLR300ms delay VDD PGO FPL_NR S Q CLK RST 73 μs debounce CLR 75ms delay CLK RWR CLK PWR 38ms debounce RST CLK PWR 2.4ms delayCLR OV OV UN OV UN
UNISONIC TECHNOLOGIES CO., LTD 4 of 8 www.unisonic.com.tw Q W - R 5 0 2 - 0 1 5 . D ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Supply Voltage V DD -0.3 ~ 16 V Input Voltage PDON_N, V 5, V33, PGI V IN -0.3 ~ 7 V FPL_N -0.3 ~ 16 Output Voltage PGO VOUT -0.3 ~ 7 V Operating Temperature T OPR -40 ~ 125 °C Storage Temperature T STG -55 ~ 150 °C Note: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2. Stresses above those listed may ca use permanent damage to the devices RECOMMENDED OPERATING CONDITIONS PARAMETER SYMBOL MIN TYP MAX UNIT Supply Voltage V DD 3.8 12 15 V Input Voltage PDON_N, V 5, V33, PGI V IN 7 V FPL_N 15 V Output Voltage PGO VOUT 7 V FPL_N 30 mA Output Sink Current PGO IOSINK 10 mA Supply Voltage Rising Time T RS 1 ms ELECTRICAL CHARACTERISTICS (TA=25°C, VDD=5V) PARAMETER SYMBOL TEST CONDITIONS MIN TYP. MAX UNIT OVER VOLTAGE DETECTION V33 3.7 3.9 4.1 V5 5.7 6.1 6.5 Over Voltage Threshold VDD/ V12 12.8 13.4 13.9 V ISINK=10mA 0.3 Low Level Output Voltage (FPL_N) V OL ISINK=30mA 0.7 V Leakage Current (FPL_N) I LEAKAGE FPL_N=5V 5 μA PGI AND PGO Input Threshold Voltage (PGI) V PGI 1.16 1.20 1.24 V Low Level Output Voltage (PGO) V OL I SINK=10mA 0.4 V Leakage Current (PGO) I LEAKAGE PGO=5V 5 μA PDON_N High-Level Input Voltage V IH 2.4 V Low-Level Input Voltage V IL 1.2 V Input Pull-Up Current I l PDON_N=0V 150 μA TOTAL DEVICE Low Voltage V DD 3 V Supply Current I CC PDON_N=5V 1 mA De-Bounce Time (PDON_N) t DB1 32 38 61 ms Delay Time (PGI to PGO) t DELAY TA= -40℃ ~ 125℃ 200 300 490 ms De-Bounce Time (PDON_N) t DB2 32 38 61 ms PDON_N to FPL_N delay Time t DELAY2 T DB2+2.0 T DB2+2.4 T DB2+3.8 ms Internal UVD Delay Time t DELAY3 FPL_N go low & every Time PGI>1.2V 65 75 122 ms De-Glitch Time t G 63 73 120 us
UNISONIC TECHNOLOGIES CO., LTD 5 of 8 www.unisonic.com.tw Q W - R 5 0 2 - 0 1 5 . D
UNISONIC TECHNOLOGIES CO., LTD 6 of 8 www.unisonic.com.tw Q W - R 5 0 2 - 0 1 5 . D APPLICATION CIRCUIT APPLICATION TIMMING 1. PGI (UNDER_VOLTAGE): PDON_N FPL_N PGO PGI tDB1 tDELAY1+tG tDELAY2 tDB2 tDELAY1+tG PDON_N FPL_N PGO PGI tDB1 tdelay1+tG tDELAY2 tDB2
UNISONIC TECHNOLOGIES CO., LTD 7 of 8 www.unisonic.com.tw Q W - R 5 0 2 - 0 1 5 . D APPLICATION TIMMING(Cont.) 2. V33, V5 (UNDER_VOLTAGE): PDON_N FPL_N PGO PGI tDB1 tDELAY3 tDELAY2 tDB2 tDELAY1+tG V33 / V5 tDB1 tDELAY3=75ms PDON_N FPL_N PGO V33 / V5 tDB1 tDELAY1+tG tDELAY2 tDB2
UNISONIC TECHNOLOGIES CO., LTD 8 of 8 www.unisonic.com.tw Q W - R 5 0 2 - 0 1 5 . D APPLICATION TIMMING(Cont.) 3. V33, V5, V12 (OVER_VOLTAGE): PDON_N FPL_N PGO tDB1 tDELAY2 tDB2 tDELAY1+tG V33 /V5 /V12 tG tDB1 PDON_N FPL_N PGO tDB1 tDELAY1+tG tDELAY2 tDB2 V33 /V5 /V12 UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.