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MIC2592B-5BTQ Datasheet(PDF) 9 Page - Micrel Semiconductor |
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MIC2592B-5BTQ Datasheet(HTML) 9 Page - Micrel Semiconductor |
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9 / 31 page  March 2005 9 M9999-033105 MIC2592B Micrel Electrical Characteristics (continued)(7) Symbol Parameter Condition Min Typ Max Units IAUX(THRESH) Auxiliary Output Current Limit Current which must be drawn from 0.84 A Threshold (Figure 4) V AUX(THRESH) AUX(THRESH) AUX Threshold (Figure 4) V Threshold (Figure 4) V to register as a fault ISC(TRAN) Maximum Transient Short Circuit VAUX Maximum Transient Short Circuit V Maximum Transient Short Circuit V Enabled, then Grounded Current I V R MAX STBY[A/B] DS(AUX) A ILIM(AUX) Regulated Current after Transient From end of ISC(TRAN) to CFILTER time-out 0.375 0.7 1.35 A Output Discharge Resistance RDIS(12V) 12VOUT[A/B] 12VOUT[A/B] = 6.0V 1600 Ω RDIS(3V) 3VOUT[A/B] 3V DIS(12V) DIS(12V) OUT[A/B] = 1.65V 150 Ω RDIS(VAUX) 3VAUX[A/B] 3VAUX[A/B] 3VAUX[A/B] 3V 3VAUX[A/B] 3V = 1.65V 430 Ω tOFF(12V) 12V Current Limit Response Time MIC2592B-2BTQ 1 2.0 µs (Figure 2) C OFF(12V) OFF(12V) GATE = 25pF VIN –VSENSE = 140mV tOFF(3V) 3.3V Current Limit Response Time MIC2592B-2BTQ 1 2.0 µs (Figure 3) C OFF(3V) OFF(3V) GATE = 25pF VIN –VSENSE = 140mV(8) tSC(TRAN) VAUX[A/B] Current Limit Response VAUX[A/B] VAUX[A/B] Current Limit Response V VAUX[A/B] Current Limit Response V = 0V, VSTBYA = V STBYA STBYA STBYB = +3.3V 2.5 5 µs Time (Figure 5) SC(TRAN) SC(TRAN) tPROP(12VFAULT) Delay from 12V[A/B] Overcurrent MIC2592B-2BTQ 1 µs Limit to /FAULT output C PROP(12VFAULT) PROP(12VFAULT) FILTER = 0 VIN –VSENSE = 140mV(8) tPROP(3VFAULT) Delay from 3V[A/B] Overcurrent MIC2592B-2BTQ 1 µs Limit to /FAULT[A/B] Output C PROP(3VFAULT) PROP(3VFAULT) FILTER = 0 VIN –VSENSE = 140mV(8) tPROP(VAUXFAULT) Delay from VAUX[A/B] Overcurrent MIC2592B-2BTQ 1 µs limit to /FAULT[A/B] output PROP(VAUXFAULT) PROP(VAUXFAULT) CFILTER = 0 VAUX V V Output Grounded(8) tW ON[A/B], AUXEN[A/B] Pulse Width Note 8 100 ns tPOR MIC2592B Power-On Reset Time Note 8 250 µs after VSTBY[A/B] becomes valid SMBus Timing t1 SCL (clock) period Figure 1 2.5 µs t2 Data In setup time to SCL HIGH Figure 1 100 ns t3 Data Out stable after SCL LOW Figure 1 300 ns t4 Data LOW setup time to SCL LOW Start condition, Figure 1 100 ns t5 Data HIGH hold time after SCL HIGH Stop condition, Figure 1 100 ns Notes: 7. Specification for packaged product only. 8. Parameters guaranteed by design. Not 100% production tested. Symbol Parameter Condition Min Typ Max Units Auxiliary Output Current Limit Current which must be drawn from 0.84 A Threshold (Figure 4) V Maximum Transient Short Circuit V Current Regulated Current after Transient From end of I Output Discharge Resistance 12VOUT[A/B] 12V 3VOUT[A/B] 3V 3VAUX[A/B] 3V 12V Current Limit Response Time MIC2592B-2BTQ 1 (Figure 2) C V 3.3V Current Limit Response Time MIC2592B-2BTQ 1 (Figure 3) C V VAUX[A/B] Current Limit Response V Time (Figure 5) Delay from 12V[A/B] Overcurrent MIC2592B-2BTQ 1 µs Limit to /FAULT output C V Delay from 3V[A/B] Overcurrent MIC2592B-2BTQ 1 µs Limit to /FAULT[A/B] Output C V Delay from VAUX[A/B] Overcurrent MIC2592B-2BTQ 1 µs limit to /FAULT[A/B] output C V ON[A/B], AUXEN[A/B] Pulse Width after VSTBY[A/B] becomes valid Symbol Parameter Condition Min Typ Max Units Auxiliary Output Current Limit Current which must be drawn from 0.84 A Threshold (Figure 4) V Maximum Transient Short Circuit V Current Regulated Current after Transient From end of I 12VOUT[A/B] 12V 3VOUT[A/B] 3V 3VAUX[A/B] 3V 12V Current Limit Response Time MIC2592B-2BTQ 1 (Figure 2) C V 3.3V Current Limit Response Time MIC2592B-2BTQ 1 (Figure 3) C V VAUX[A/B] Current Limit Response V Delay from 12V[A/B] Overcurrent MIC2592B-2BTQ 1 µs Limit to /FAULT output C V Delay from 3V[A/B] Overcurrent MIC2592B-2BTQ 1 µs Limit to /FAULT[A/B] Output C V Delay from VAUX[A/B] Overcurrent MIC2592B-2BTQ 1 µs limit to /FAULT[A/B] output C V Symbol Parameter Condition Min Typ Max Units Auxiliary Output Current Limit Current which must be drawn from 0.84 A time-out 0.375 0.7 1.35 A = 6.0V 1600 Ω = 1.65V 150 Ω = 1.65V 430 Ω 12V Current Limit Response Time MIC2592B-2BTQ 1 3.3V Current Limit Response Time MIC2592B-2BTQ 1 = +3.3V 2.5 Delay from 12V[A/B] Overcurrent MIC2592B-2BTQ 1 µs Delay from 3V[A/B] Overcurrent MIC2592B-2BTQ 1 µs Delay from VAUX[A/B] Overcurrent MIC2592B-2BTQ 1 µs Note 8 250 µs time-out 0.375 0.7 1.35 A = 6.0V 1600 Ω = 1.65V 150 Ω = 1.65V 430 Ω 12V Current Limit Response Time MIC2592B-2BTQ 1 3.3V Current Limit Response Time MIC2592B-2BTQ 1 = +3.3V 2.5 Delay from 12V[A/B] Overcurrent MIC2592B-2BTQ 1 µs Delay from 3V[A/B] Overcurrent MIC2592B-2BTQ 1 µs Delay from VAUX[A/B] Overcurrent MIC2592B-2BTQ 1 µs 250 µs time-out 0.375 0.7 1.35 A = 6.0V 1600 Ω = 1.65V 150 Ω = 1.65V 430 Ω Delay from 12V[A/B] Overcurrent MIC2592B-2BTQ 1 µs Delay from 3V[A/B] Overcurrent MIC2592B-2BTQ 1 µs Delay from VAUX[A/B] Overcurrent MIC2592B-2BTQ 1 µs 250 µs Symbol Parameter Condition Min Typ Max Units Auxiliary Output Current Limit Current which must be drawn from 0.84 A time-out 0.375 0.7 1.35 A = 6.0V 1600 Ω = 1.65V 150 Ω = 1.65V 430 Ω µs µs µs Delay from 12V[A/B] Overcurrent MIC2592B-2BTQ 1 µs Delay from 3V[A/B] Overcurrent MIC2592B-2BTQ 1 µs Delay from VAUX[A/B] Overcurrent MIC2592B-2BTQ 1 µs 250 µs Symbol Parameter Condition Min Typ Max Units Auxiliary Output Current Limit Current which must be drawn from 0.84 A Symbol Parameter Condition Min Typ Max Units Auxiliary Output Current Limit Current which must be drawn from 0.84 A SCL (clock) period Figure 1 Data In setup time to SCL HIGH Figure 1 Data Out stable after SCL LOW Figure 1 Data LOW setup time to SCL LOW Start condition, Figure 1 Data HIGH hold time after SCL HIGH Stop condition, Figure 1 SCL (clock) period Figure 1 Data In setup time to SCL HIGH Figure 1 Data Out stable after SCL LOW Figure 1 Data LOW setup time to SCL LOW Start condition, Figure 1 Data HIGH hold time after SCL HIGH Stop condition, Figure 1 µs ns ns ns ns µs ns ns ns ns µs ns ns ns ns |
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