Datasheet LTC4417 (Linear Technology) - 3

LTC4417
e lecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. For all tests, V1 = VS1, V2 = VS2, V3 = VS3. Unless otherwise noted, V1 = V2 = V3 = VOUT = 12V, HYS = GND. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Start-Up
V1-V3,VOUT V1 to V3,VOUT Operating Supply Range l 2.5 36 V IV1-V3,VOUT(EN) Total Supply Current with Channels Enabled V1 = 5V, V2 = 12V, V3 = 2.5V, VOUT = 4V, l 28 78 µA (Notes 3, 4) IV1-V3(EN) Total Supply Current with Channels Disabled V1 = 5V, V2 = 12V, V3 = 2.5V, VOUT = EN = 0V, l 31 93 µA (Notes 3, 4) IV1-V3(SHDN) Total Supply Current When Shutdown V1 = 5V, V2 = 12V, V3 = 2.5V, VOUT = SHDN = l 15.4 84 µA 0V, (Notes 3, 4) IVOUT VOUT Supply Current V1 = 5V, V2 = 12V, V3 = 2.5V, VOUT = 4V l 14 30 µA IPRIORITY Current from Highest V1 to V3 Priority Input V1 = 5V, V2 = 12V, V3 = 2.5V, VOUT = 4V l 2.6 6 µA Source (V1) V1 = 5V, V2 = 12V, V3 = 2.5V, VOUT = EN = 0V l 20 45 µA IHIGHEST Current from Highest V1 to V3 Voltage Input V1 = 5V, V2 = 12V, V3 = 2.5V, VOUT = 4V, l 11 72 µA Source (Note 3, 4) V1 = 5V, V2 = 12V, V3 = 2.5V, VOUT = EN = 0V, l 15 80 µA SHDN = 0V, (Note 3, 4) ILOWER Current from V1 to V3 Input Voltage Sources V1 = 5V, V2 = 12V, V3 = 2.5V, VOUT = 4V –5 0.2 1 µA Lower than VOUT Not Highest Valid Priority
Gate Control
∆VG Open (VS – VG) Clamp Voltage VOUT = 11V, G1 to G3 = Open l 5.4 6.2 6.7 V ∆VG(SOURCE) Sourcing (VS – VG) Clamp Voltage VOUT = 11V, I = –10µA l 5.8 6.6 7 V ∆VG(SINK) Sinking (VS – VG) Clamp Voltage VOUT = 11V, I = 10µA l 4.5 5.2 6 V ∆VG(OFF) G1 to G3 Off (VS – VG) Threshold V1 = V2 = V3 = 2.8V, VOUT = 2.6V, G1 to G3 l 0.12 0.35 0.6 V Rising Edge ∆VG(SLEW,ON) G1 to G3 Pull-Down Slew Rate VOUT = 11V, CGATE = 10nF (Note 5) l 4 9 20 V/µs ∆VG(SLEW,OFF) G1 to G3 Pull-Up Slew Rate VOUT = 11V, CGATE = 10nF (Note 6) l 7.5 13 22 V/µs IG(DN) G1 to G3 Low Pull-Down Current VOUT = 2.6V, V1 to V3 = 2.8V, (G1 to G3) = ∆VG 0.8 2 7 µA + 300mV RG(OFF) G1 to G3 OFF Resistance VOUT = 4V, V1 to V3 = 5V, IG = –10mA l 9 16 26 Ω VREV Reverse Voltage Threshold Measure (V1 to V3) – VOUT, VOUT Falling l 30 120 200 mV tG(SWITCHOVER) Pin Break-Before-Make Time VOUT = 11V, CGATE = 10nF, (Note 7) l 0.7 2 3 µs tpG(SHDN) G1 to G3 Turn-Off Delay From SHDN VOUT = 11V, Falling Edge SHDN to l 20 50 100 µs (G1 to G3) = (VS1 to VS3) – 3V, CGATE = 10nF tpG(EN,OFF) G1 to G3 Turn-Off Delay From EN VOUT = 11V, Falling EN Edge to l 0.3 0.7 1.4 µs (G1 to G3) = (VS1 to VS3) – 3V, CGATE = 10nF tpG(EN,ON) G1 to G3 Turn-On Delay From EN VOUT = 11V, Rising EN Edge to l 1 1.4 2 µs (G1 to G3) = (VS1 to VS3) – 3V, CGATE = 10nF 4417f 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts