Datasheet LTC4418 (Linear Technology) - 3

LTC4418
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. Unless otherwise noted, V1 = VS1 = 12V and/or V2 = VS2 = 12V, VOUT = 12V, HYS = GND, CAS = Open, G1 = G2 = Open. (Notes 1, 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Start-Up
V1, V2, VOUT V1, V2, VOUT Operating Supply Range l 2.5 40 V VINTVCC INTVCC Voltage l 2.5 3.3 4 V ITOT Total Supply Current l 26 52 µA (Sum of IVOUT, IV1, IV2, IVS1, IVS2) SHDN = 0V l 22 44 µA IVOUT VOUT Supply Current l 17 34 µA IV1, IV2 V1, V2 Supply Current (Note 3) l 1.4 2.8 µA VOUT = 0V, EN = 0V l 21 42 µA VOUT = 0V, SHDN = 0V l 13 26 µA IVS1, IVS2 VS Supply Current Channel ON l 5.7 11.4 µA Channel OFF l 1.8 3.6 µA
Gate Control
∆VG Open Clamp Voltage (VS – VG) VOUT = 11V, G1 = G2 = Open l 5.4 6.2 6.7 V ∆VG(SOURCE) Sourcing Clamp Voltage (VS – VG) VOUT = 11V, I = –10µA l 5.8 6.6 7 V ∆VG(SINK) Sinking Clamp Voltage (VS – VG) VOUT = 11V, I = 10µA l 4.5 5.2 6 V IG(DN) Gate Pull-Down Current VG = 3V, VS Floating l 28 60 120 mA ∆VG(OFF) Gate Off Threshold (VS – VG) VS1 = VS2 = 2.8V, VOUT = 11V, Gate Rising l 0.2 0.3 0.4 V RG(OFF) Gate Off Resistance VOUT = 11V, V1 or V2 = 12V, IG = –10mA l 8 16 28 Ω VREV Reverse Voltage Threshold Measure (V1 or V2) – VOUT Falling l 75 125 185 mV tG(SWITCHOVER) Break-Before-Make Time VOUT = 11V, CGATE = 10nF (Note 4) l 1 2.7 4 µs tP(SHDN) Gate Turn-Off Delay from SHDN VOUT = 11V, Falling Edge SHDN to l 0.3 0.7 1.4 µs G1 = VS1–3V or G2 = VS2 – 3V, CGATE = 10nF tP(EN) Gate Turn-On/Off Delay from EN VOUT = 11V, Rising/Falling EN Edge to l 0.3 0.7 1.4 µs G1 = VS1–3V or G2 = VS2 – 3V, CGATE = 10nF tSS Soft-Start Timeout l 20 35 70 ms
Input/Output Pins
VVALID(OL) VALID Output Low Voltage I = 1mA, V1 or V2 = 2.5V, VOUT = 0V l 0.23 0.5 V VCAS(OH) CAS Output High Voltage I = –1µA, V1, V2, VOUT > 2.5V, l 1.6 2.7 3.5 V UV = OV = EN = 0V VCAS(OL) CAS Output Low Voltage I = 1mA, V1 or V2 = 2.5V, VOUT = 0V l 60 150 mV ICAS CAS Pull-Up Current SHDN = 0V, CAS = 1V l –10 –20 –40 µA tCAS(EN) CAS Delay from VG(OFF) VOUT = 11V l 0.3 0.7 1.4 µs VEN(TH) EN Threshold Voltage EN Rising, VOUT = 11V l 0.6 1 1.4 V VSHDN(TH) SHDN Threshold Voltage SHDN Rising l 0.6 1 1.4 V VSHDN_EN(HYS) SHDN, EN Threshold Hysteresis 130 mV ICTRL SHDN, EN Pull-Up Current SHDN = EN = 0V l –1.5 –3.2 –5.5 µA ILEAK SHDN, EN, VALID1, VALID2, CAS SHDN = EN = VALID1 = VALID2 = 40V, l ±1 µA Leakage Current CAS = 5.5V 4418f For more information www.linear.com/LTC4418 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts