general description the EST7610 provides protecti o n circuits, power good output (pgo), fault protection latch (fpl_n), and a protection detector function (pdon_n) control. it can minimize external components of switching power supply systems in personal compute r. the over voltage det ector (ovd) monitors 3.3 v , 5 v , 12v input voltage level. the under voltage detector (uvd) monitors 3.3 v , 5v input voltage level. when ovd or uvd detect the fault voltage level, the fpl_n is latched high and pgo go lo w . the latch can be reset by pdon_n go h igh. there is 2.4 ms delay time for pdon_n turn off fpl_n. when ovd and uvd detect the right voltage level, the power good output (pgo) will be issue. features the over voltage detector (ovd) monitors 3.3v, 5v, 12v input voltage level. the under vol tage detector (uvd) monitors 3.3v, 5v input voltage level. both of the power good output (pgo) and fault protection latch (fpl_n) are open drain output. 75 ms time delay for uvd. 300 ms time delay for pgo. 38 ms for pdon_n input signal de ? bounce . 73 us for internal signal de ? glitches. 2.4 ms time delay for pdon_n turn - off fpl_n. pin assignment and p ackage type pin description pin no. pin name type description 1 pgi i power good input pin 2 gnd p ground 3 fpl_n o fau lt protection latch output pin(open drain output) 4 pdon_n i protection detector function on/off control input pin 5 v33 i 3.3v input pin 6 v5 i 5v input pin 7 vcc i supply voltage / 12v input pin 8 pgo o power good output pin(open drain output) 8 7 6 5 1 2 3 4 pgi gnd fpl_n pdon_n pgo vcc v5 v33 ordering inform a tion pa ckage 8 ? pin plastic dip 8 ? pin plastic sop marking EST7610a EST7610as ?]?^ packing tube tube or tape&reel ? ?]??^ EST7610 pc power supply supervisor www.esthome.com 1 200 6 -0 1 - a
function table pgi pdon_n uv ov fpl_n pgo < 0.95v l no no l l < 0.95v l no yes h l < 0.95v l yes no l l 0.95 < pgi < 1.2 l no no l l 0.95 < pgi < 1.2 l no yes h l 0.95 < pgi < 1.2 l yes no h l pgi > 1.2 l no no l h pgi > 1.2 l no yes h l pgi > 1 .2 l yes no h l x h x x h l x = don ? t care block diagram r s q + - + - + - + - + - + - + - vcc por lvrst pdon_n v33 v5 fpl_n vcc vcc pgo pgi 0.95v 1.2v un 3.6v 150ua clk delay clr 300ms clk rst 73us debounce clk rst 73us debounce un ov ov 75 ms pwr clk delay un 2.4ms clk vcc low voltage power on reset generator clock pwr pwr clk rst 38ms debounce clr delay clk clr ov pwr en0158a_wt7510 block diagram EST7610 pc power suppl y supervisor www.esthome.com 2 200 6 -0 1 - a
recommended operatin g conditions parameter conditions min. typ. max. unit supply voltage, vcc 4 12 15 v input voltage pdon_n, v5, v33, pgi 7 v fpl_n 15 v output voltage pgo 7 v operating temperature - 40 125 j fpl_n 30 ma output sink current pgo 10 ma supply voltage rising time 1 ms electrical characteristics, at ta=25 c and v cc =5v . over voltage detection parameter condition min. typ. max. unit v33 3.7 3.9 4.1 v v5 5.7 6.1 6.5 v over voltage threshold vcc / v12 12.8 13.4 13.9 v i leakage leakage current (fpl_n) v( fpl_n ) = 5v 5 ua i sink 10ma 0.3 v ol low level output voltage ( fpl_n ) i sink 30ma 0.7 v pgi and pgo parameter condition min. typ. max. unit v3 3 2.0 2.2 2.4 v under voltage threshold v5 3.3 3.5 3.7 v pgi1 1.16 1.20 1.24 v input threshold voltage(pgi) pgi2 0.90 0.95 1.00 i leakage leakage current(pgo) pgo = 5v 5 ua v ol low level output voltage(pgo) 0.4 v pdon_n parameter condition min. typ. max. unit i nput pull - up current pdon_n= 0v 150 ua high - level input voltage 2.0 v low - level input voltage 0.8 v total device parameter condition min. typ. max. unit icc supply current pdon _n= 5v 1 ma vcc low voltage 3 v switching characteri stics , v cc=5v parameter condition min. typ. max. unit t db1 de - bounce time (pdon_n) 32 38 61 ms t dleay1 delay time (pgi to pgo) 200 300 490 ms t db2 de - bounce time (pdon_n) 32 38 61 ms t g de - glitch time 63 73 120 us t delay2 pdon_n to fpl_n de lay time t db2 +2.0 t db2 +2.4 t db2 +3.8 ms t delay3 internal uvd delay time fpl_n go low & every time pgi > 0.95v 65 75 122 ms EST7610 pc power suppl y supervisor www.esthome.com 3 200 6 -0 1 - a
application circuit 8 7 6 5 1 2 3 4 pgi gnd fpl_n pdon_n pgo vcc v5 v33 + 12v +5 vsb + 5v + 3.3v pdon_n pgi + 5v + 5v sb 0.01uf 0.01uf 470 EST7610 pc power suppl y supervisor www.esthome.com 4 200 6 -0 1 - a
application timming 1.) pgi (under_voltage) ?g pdon_n fpl_n pgo pgi t db1 t delay1 +t g t db2 t delay2 pdon_n fpl_n pgo pgi t db1 t delay1 +t g t db2 t delay2 t delay1 +t g EST7610 pc power suppl y supervisor www.esthome.com 5 200 6 -0 1 - a
2.) v33, v5 (under_volt age) ?g pdon_n fpl_n pgo v33 / v5 t db1 t delay1 +t g t db2 t delay2 pdon_n fpl_n pgo pgi v33 / v5 t db1 t delay1 +t g t db2 t delay2 t delay3 +t g t db1 t delay3 =75ms EST7610 pc power suppl y supervisor www.esthome.com 6 200 6 -0 1 - a
3.) v33, v5, v12 (over_voltage) ?g pdon_n fpl_n pgo v33/v5/v12 t db1 t dela y1 +t g t db2 t delay2 pdon_n fpl_n pgo v33/v5/v12 t db1 t delay1 +t g t db2 t delay2 t g t db1 EST7610 pc power suppl y supervisor www.esthome.com 7 200 6 -0 1 - a
mechanical inform ation plastic dual ? in ? line pa ckage note 1 ?g all linear dimensions are in inches ?] millimeters ?^ . note 2 ?g this drawing is subject to change wit hout notice. note 3 ?g falls within jedec ms ? 001 EST7610 pc power suppl y supervisor www.esthome.com 8 200 6 -0 1 - a
|
