Datasheet LTC4360-1, LTC4360-2 (Analog Devices) - 3

LTC4360-1/LTC4360-2
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 5V, VON = 0V (LTC4360-1) unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Supplies
VIN Input Voltage Range l 2.5 80 V VIN(UVL) Input Undervoltage Lockout VIN Rising l 1.8 2.1 2.45 V IIN Input Supply Current LTC4360-1 VON = 0V, LTC4360-2 l 220 400 µA LTC4360-1 VON = 2.5V l 1.5 10 µA
Thresholds
VIN(OV) IN Pin Overvoltage Threshold VIN Rising l 5.684 5.8 5.916 V VIN(OVL) IN Pin Overvoltage Recovery Threshold VIN Falling l 5.51 5.7 5.85 V ∆VOV Overvoltage Hysteresis l 25 100 300 mV
External Gate Drive
∆VGATE External N-Channel MOSFET Gate Drive 2.5V ≤ VIN < 3V, IGATE = –1µA l 3.5 4.5 6 V (VGATE – VOUT) 3V ≤ VIN < 5.5V, IGATE = –1µA l 4.5 6 7.9 V VGATE(TH) GATE High Threshold for PWRGD Status VIN = 3.3V l 5.7 6.3 6.8 V VIN = 5V l 6.7 7.2 7.8 V IGATE(UP) GATE Pull-Up Current VGATE = 1V l –5 –10 –15 µA VGATE(UP) GATE Ramp-Up VGATE = 1V to 7V l 1.5 3 4.5 V/ms IGATE(FST) GATE Fast Pull-Down Current Fast Turn-Off, VIN = 6V, VGATE = 9V l 15 30 60 mA IGATE(DN) GATE Pull-Down Current VON = 2.5V, VGATE = 9V (LTC4360-1) l 10 40 80 µA
Input Pins
IOUT(IN) OUT Input Current VOUT = 5V, VON = 0V l 5 10 20 µA VOUT = 5V, VON = 2.5V l 0 ±3 µA VON(TH) ON Input Threshold (LTC4360-1) l 0.4 1.5 V ION ON Pull-Down Current VON = 2.5V (LTC4360-1) l 2.5 5 10 µA
Output Pins
VGATEP(CLP) IN to GATEP Clamp Voltage VIN = 8V to 80V (LTC4360-2) l 5 5.8 7.5 V RGATEP GATEP Resistive Pull-down VGATEP = 3V (LTC4360-2) l 0.8 2 3.2 MΩ VPWRGD(OL) PWRGD Output Low Voltage VIN = 5V, IPWRGD = 3mA l 0.23 0.4 V RPWRGD PWRGD Pull-Up Resistance to OUT VIN = 6.5V, VPWRGD = 1V l 250 500 800 kΩ
Delay
tON GATE On Delay VIN High to IGATE = –5µA l 50 130 200 ms tOFF GATE Off Propagation Delay VIN = Step 5V to 6.5V to PWRGD High l 0.25 1 µs tPWRGD PWRGD Delay VIN = Step 5V to 6.5V l 0.25 1 µs VGATE > VGATE(TH) to PWRGD Low l 25 65 100 ms tON(OFF) ON High to GATE Off VON = Step 0V to 2.5V (LTC4360-1) l 2 5 µs
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
An internal clamp limits VGATE to a minimum of 4.5V above VOUT. may cause permanent damage to the device. Exposure to any Absolute Driving this pin to voltages beyond this clamp may damage the device. Maximum Rating condition for extended periods may affect device reliability and lifetime.
Note 2:
All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to GND unless otherwise specified. Rev B For more information www.analog.com 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts