XA6121 Datasheet, PDF (12/27 Pages) Torex Semiconductor – ウォッチドッグ ON/OFF 機能付き電圧検出器（VDF=1.6V～5.0V

XA6121/XA6122/XA6123/XA6124 γϦʔζ
˙୺ࢠͷ࿦ཧ৚݅
୺ࢠ໊
V_IN
EN/ENB
߸ه
H
L
H
L
৚݅
V_INʾV_DFL+V_HYS
V_INʽV_DFL
EN/ENBʾ1.30V
EN/ENBʽ0.35V
H
WDʾV_WDH Λ t_WD Ҏ্Ωʔϓͨ͠ঢ়ଶ
WD
L
LË H
HË L
WDʽV_WDL Λ t_WD Ҏ্Ωʔϓͨ͠ঢ়ଶ
V_WDL→V_WDH, 300nsʽT_WDINʽt_WD
V_WDH→V_WDL, 300nsʽT_WDINʽt_WD
஫ øʣV_DFLɿݕग़ిѹ
ç ç V_HYSɿώεςϦγε෯
V_WDHɿWD H Ϩϕϧిѹ
V_WDLɿWD L Ϩϕϧిѹ
T_WDINɿWD ύϧε෯
t_WDɿWD λΠϜΞ΢τ࣌ؒ
ৄࡉʹ͍ͭͯ͸ɺిؾతಛੑΛࢀরͯ͠Լ͍͞ɻç
ػ˙ೳදʢXA6121/XA6122 γϦʔζʣ
VIN
EN
WD
RESETB^˞2
H
L
ݕग़ʗղআΛ܁Γฦ͢ʢHˠLˠHɾɾɾʣ
H
H
OPEN
L˱H
H
H
H
L
˞1
L
L
ػ˙ೳදʢXA6123/XA6124 γϦʔζʣ
VIN
ENB
WD
RESETB^˞2
H
L
ݕग़ʗղআΛ܁Γฦ͢ʢHˠLˠHɾɾɾʣ
H
L
OPEN
L˱H
H
H
H
H
˞1
L
L
L
˞1ɿWD ͷશͯͷ߸هΛؚΉʢWD=H, L, OPEN, H→L, L→H)
˞2ɿRESETB=H ͸ղআঢ়ଶΛද͢ɻ
RESETB=L ͸ݕग़ঢ়ଶΛද͢ɻ
˞3ɿEN/ENB ୺ࢠ͸ V_SS-0.3VʙV_IN+0.3V Ͱ࢖༻ͷͨΊɺV_IN=L, EN/ENB=H ͷ૊Έ߹ͤ͸͋Γ·ͤΜɻ
˞4ɿ0.35VʻEN/ENBʻ1.3V ͷؒɺϦηοτग़ྗ୺ࢠ͸ෆఆಈ࡞ͱͳΓ·͢ͷͰ͝஫ҙԼ͍͞ɻ
˞5ɿXA6121 γϦʔζ͸ EN ୺ࢠ͕಺෦ͰϓϧΞοϓ͞Ε͓ͯΓ·ͤΜͷͰɺWD ػೳΛ࢖༻͢Δࡍ͸ඞͣɺEN=H ϨϕϧͰ͝࢖༻Լ͍͞ɻ
XA6122 γϦʔζ͸ EN ୺ࢠ͕಺෦ͰϓϧΞοϓ͞Ε͓ͯΓ·͢ͷͰɺWD ػೳΛ࢖༻͢Δࡍ͸ EN=OPEN Ͱ΋࢖༻Ͱ͖·͢ɻ
XA6123 γϦʔζ͸ ENB ୺ࢠ͕಺෦Ͱϓϧμ΢ϯ͞Ε͓ͯΓ·ͤΜͷͰɺWD ػೳΛ࢖༻͢Δࡍ͸ඞͣɺENB=L ϨϕϧͰ͝࢖༻Լ͍͞ɻ
XA6124 γϦʔζ͸ ENB ୺ࢠ͕಺෦Ͱϓϧμ΢ϯ͞Ε͓ͯΓ·͢ͷͰɺWD ػೳΛ࢖༻͢Δࡍ͸ ENB=OPEN Ͱ΋࢖༻Ͱ͖·͢ɻ
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