Part Number : EST7502C


Manufactures : EST

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EST7502C image

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Description :

EST7502C/EST7502CS POWER SUPPLY SUPERVISOR WITH PWM CONTROLLER Description The EST7502C is designed with a pulse-width-modulation control circuit and a complete power supervisor for use in the switched mode power supply . It contains various functions, like under voltage protection (UVP), over voltage protection (OVP), power good output (PG) and ON/OFF control (REM). UVP(Under voltage protection) function is for +3.3V, +5V, +12V outputs. OVP(Over voltage protection) function is for +3.3V, +5V, +12V and PT is for extra protection input. PG(Power good signal) is a safe operation signal to inform the external parts. REM(Remote on/off) is used to control the SMPS on/off. The REM control signal has the on/off transferred debounce–time. PIN CONFIGURATION (Top View) FEATURE ■ 3-channel under voltage protection (UVP) ■ 3-channel over voltage protection (OVP) ■ 1-channel extra protection (PT) ■ 1-channel sense input to control the PG (SEN) ■ Remote on/off control function (REM) ■ Dual output for push-pull operation (OP1/OP2) ■ Soft start capability by external capacitor (SS) ■ VCC under voltage lockout ■ 16-Pin dual in-line package ■ Pb-free Package are available ORDERING INFORMATION ORDER NUMBER EST7502C EST7502C Package DIP-16 (Pb-free) SOP-16(Pb-free) REFERENCE APPLICATION CIRCUIT Shipping Tube Tube Top Marking EST.7502C EST.7502C 1 2012.5.1 Rev.A1.5 datasheet EST7502C POWER SUPPLY SUPERVISOR WITH PWM CONTROLLER PIN DESCRIPTION Pin Symbol 1 V33 2 V5 3 V12 4 PT 5 GND 6 RT 7 OP1 8 OP2 9 REM 10 SS 11 PG 12 SEN 13 VCC 14 COMP 15 NEG 16 POS Type I I I I O O I O I I O I I Function OVP, UVP for +3.3V OVP, UVP for +5V OVP, UVP for +12V Extra protection input Ground Oscillation frequency setting resistor PWM output1 PWM output2 Remote ON/OFF control input Soft start function setting capacitor Power good signal Sense signal input Supply voltage Error amplifier output Error amplifier (-) input Error amplifier (+) input FUNCTION BLOCK DIAGRAM ABSOLUTE MAXIMUN RATINGS PARAMETER Supply Voltage VCC Input Voltage V33,V5,V12,PT,REMB,SEN,POS,NEG Output Voltage OP1,OP2,PG,COMP Operating Range Temperature TO Storage Temperature Range TS MIN MAX UNITS -0.3 7 V -0.3 7 V -0.3 7 V -20 +85 oC -65 150 oC 2 2012.5.1 Rev.A1.5 datasheet EST7502C POWER SUPPLY SUPERVISOR WITH PWM CONTROLLER ELECTRICAL CHARACTERISTICS ( For VCC=5V and Tj=25 oC ) PARAMETER CONDITIONS Over Voltage Protection (OVP- V33,V5,V12,PT) OV33 Over voltage threshold OV5 OV12 PT Noise debounce time Tg.ov Under Volatge Protection (UVP- V33,V5,V12) UV33 Under voltage threshold UV5 UV12 Noise debounce time Tg.uv PG check under voltage delay time Td.uv Soft Start (SS) Sink current Source current Isink Isource RT=100 KΩ VCC Under Voltage Lockout (UVLO) Start-up voltage REM Input Pin (REM) High level input voltage Low level input voltage REM delay time VIH VIL Td.on/off Power Good (PG) PG delay time S […]

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EST7502C Datasheet

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