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LTC4229 Datasheet(PDF) 3 Page - Linear Technology |
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LTC4229 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 28 page  LTC4229 3 4229f For more information www.linear.com/LTC4229 elecTrical characTerisTics The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Supplies VIN Input Supply Range l 2.9 18 V IIN Input Supply Current l 2 4 mA VINTVCC Internal Regulator Voltage I = 0, –500µA l 4.5 5 5.5 V VINTVCC(UVL) Internal VCC Undervoltage Lockout INTVCC Rising l 2.1 2.2 2.3 V ∆VINTVCC(HYST) Internal VCC Undervoltage Lockout Hysteresis l 30 60 90 mV Ideal Diode Control ∆VFWD(REG) Forward Regulation Voltage (VIN – VDSNS) l 35 50 65 mV ∆VDGATE External N-Channel Gate Drive (VDGATE – VDSRC) IN < 7V, ∆VFWD = 0.15V; I = 0, –1µA IN = 7V to 18V, ∆VFWD = 0.15V; I = 0, –1µA l l 5 10 7 12 14 14 V V ∆VDGATE(ST) Diode MOSFET On Detect Threshold (VDGATE – VDSRC) DSTAT Pulls Low, ∆VFWD = 75mV l 0.3 0.7 1.1 V ∆VFWD(FLT) Open Diode MOSFET Threshold (VIN – VDSNS) DFLT Pulls Low l 200 250 300 mV IDSNS DSNS Pin Current DSNS = 12V l 50 150 300 µA IDSRC DSRC Pin Current DSRC = 0V l –95 –150 µA ICPO(UP) CPO Pull-Up Current CPO = DSRC = IN = 2.9V CPO = DSRC = IN = 18V l l –70 –60 –105 –95 –130 –120 µA µA IDGATE(FPU) DGATE Fast Pull-Up Current ∆VFWD = 0.2V, ∆VDGATE = 0V, CPO = 17V –1.5 A IDGATE(FPD) DGATE Fast Pull-Down Current ∆VFWD = –0.2V, ∆VDGATE = 5V 1.5 A IDGATE(DN) DGATE Off Pull-Down Current DOFF = 2V, ∆VDGATE = 2.5V l 50 100 200 µA tON(DGATE) DGATE Turn-On Delay ∆VFWD = 0.2V , CDGATE = 10nF l 0.25 0.5 µs tOFF(DGATE) DGATE Turn-Off Delay ∆VFWD = –0.2V, CDGATE = 10nF l 0.2 0.5 µs tPLH(DGATE) DOFF Low to DGATE High l 50 100 µs Hot Swap Control ∆VSENSE(TH) Current Limit Sense Voltage Threshold (VSENSE+ – VSENSE–) FB = 1.23V FB = 0V l l 22.5 6 25 8.3 27.5 10.6 mV mV VSENSE+(UVL) SENSE+ Undervoltage Lockout SENSE+ Rising l 1.8 1.9 2 V ∆VSENSE+(HYST) SENSE+ Undervoltage Lockout Hysteresis l 10 50 90 mV ISENSE+ SENSE+ Pin Current SENSE+ = 11V, IN = 12V, OUT = 0V SENSE+ = 13V, IN = 12V, OUT = 0V l l 150 300 2 450 4 µA mA ISENSE– SENSE– Pin Current SENSE– = 12V l 10 40 100 µA ∆VHGATE External N-Channel Gate Drive (VHGATE – VOUT) IN < 7V; I = 0, –1µA IN = 7V to 18V; I = 0, –1µA l l 5 10 7 12 14 14 V V ∆VHGATE(H) Gate High Threshold (VHGATE – VOUT) l 3.6 4.2 4.8 V IHGATE(UP) External N-Channel Gate Pull-Up Current Gate Drive On, HGATE = 0V l –7 –10 –13 µA IHGATE(DN) External N-Channel Gate Pull-Down Current Gate Drive Off, OUT = 12V, HGATE = OUT + 5V l 1 2 4 mA IHGATE(FPD) External N-Channel Gate Fast Pull-Down Current Fast Turn-Off, OUT = 12V, HGATE = OUT + 5V l 100 200 350 mA tPHL(SENSE) Sense Voltage (SENSE+ – SENSE–) High to HGATE Low ∆VSENSE = 200mV, CHGATE = 10nF l 0.5 1 µs tOFF(HGATE) OV High to HGATE Low UV Low to HGATE Low EN High to HGATE Low SENSE+ Low to HGATE Low l l l l 10 10 20 10 20 20 40 20 µs µs µs µs |
Similar Part No. - LTC4229_15 |
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Similar Description - LTC4229_15 |
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