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ISL9440B Datasheet(PDF) 7 Page - Intersil Corporation |
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ISL9440B Datasheet(HTML) 7 Page - Intersil Corporation |
7 / 24 page 7 FN6799.0 January 15, 2009 Maximum Duty Cycle (ISL9440C) 86 % Minimum Duty Cycle (ISL9440C) 6% FB Bias Current (Note 6) 50 nA Peak-to-Peak Sawtooth Amplitude (Note 6) VIN = 12V 1.6 V VIN = 5.5V 0.667 V Ramp Offset 1 V PWM GATE DRIVER CHANNEL 1, 2 (UGATE1, 2; LGATE 1, 2) (Note 6) Source Current 800 mA Sink Current 2000 mA Upper Drive Pull-Up VCC_5V = 5.0V 4 8 Ω Upper Drive Pull-Down VCC_5V = 5.0V 1.6 3 Ω Lower Drive Pull-Up VCC_5V = 5.0V 4 8 Ω Lower Drive Pull-Down VCC_5V = 5.0V 0.9 2 Ω Rise Time COUT = 1000pF 18 ns Fall Time COUT = 1000pF 18 ns PWM GATE DRIVER CHANNEL 3 (UGATE3; LGATE 3) (Note 6) Sink/Source Current 400 mA Upper Drive Pull-Up VCC_5V = 5.0V 8.0 12 Ω Upper Drive Pull-Down VCC_5V = 5.0V 3.2 6.0 Ω Lower Drive Pull-Up VCC_5V = 5.0V 8 12 Ω Lower Drive Pull-Down VCC_5V = 5.0V 1.8 3.5 Ω Rise Time COUT = 1000pF 18 ns Fall Time COUT = 1000pF 18 ns LOW DROP OUT CONTROLLER Drive Sink Current LDOFB = 0.76V 50 mA FB Threshold Voltage IG4 = 21mA 0.800 V Amplifier Trans-conductance 2A/V LDOFB Input Leakage Current (Note 6) LDOFB = 0.8V 50 nA ENABLE1, ENABLE2, ENABLE3 THRESHOLD and SOFT-START CURRENT EN/SSx Enable Threshold 1.1 1.3 1.55 V EN/SSx Soft-Start Charge Current VEN/SSx = 1.3V 1.1 1.55 2.0 µA POWER-GOOD MONITORS PGOOD Upper Threshold, PWM 1, 2 and 3 105.5 111 115.5 % PGOOD Lower Threshold, PWM 1, 2 and 3 87 91 96 % PGOOD for Linear Controller 70 75 80 % PGOOD Low Level Voltage I_SINK = 4mA 0.4 V PGOOD Leakage Current PGOOD = 5V 0.025 1 µA Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application Schematic. VIN = 5.6V to 24V, or VCC_5V = 5V ±10%, C_VCC_5V = 4.7µF, TA = -40°C to +85°C, Typical values are at TA = +25°C; Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. (Continued) PARAMETER TEST CONDITIONS MIN TYP MAX UNITS ISL9440B, ISL9440C |
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