Datasheet LTC4361-1, LTC4361-2 (Analog Devices) - 4

LTC4361-1/LTC4361-2
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 5V, VON = 0V, unless otherwise noted. Input Supply Current GATE Fast Pull-Down Current vs Input Voltage GATE Drive vs GATE Current vs Temperature
10000 8 40 VIN = 6V 7 VGATE = 9V 1000 V 35 ON = 0V 6 VIN = 5V 100 5 (mA) V (V) VIN = 3V (µA) ON = 2.5V 4 30 I IN 10 ∆V GATE 3 I GATE(FST) VIN = 2.5V 2 25 1 1 0.1 0 20 1 10 100 0 2 4 6 8 10 12 –50 –25 0 25 50 75 100 125 VIN (V) IGATE (µA) TEMPERATURE (°C) 436112 G03 436112 G01 436112 G02
GATE Voltage and GATE High PWRGD Voltage GATE Off Propagation Delay Threshold (for PWRGD Status) vs PWRGD Current vs Overdrive vs Input Voltage
500 8 12 VIN = STEP 5V TO (VIN(OV) + VOVDRV) VIN = VOUT 7 11 400 VGATE 6 10 (V) (mV) 300 5 9 (OL) (µs) 4 GATE(TH) 8 VGATE(TH) 200 t OFF /VG 3 E 7 V PWRGD 2 V GAT 6 100 1 5 0 0 4 0 1 2 3 4 5 0 0.5 1 1.5 2 2.5 2.5 3 3.5 4 4.5 5 5.5 6 IPWRGD (mA) VOVDRV (V) VIN (V) 436112 G04 436112 G05 436112 G06
Normal Start-Up Sequence GATE Slow Ramp-Up Entering Sleep Mode
VON 5V/DIV VIN VIN 5V/DIV 5V/DIV VOUT VOUT VOUT 5V/DIV 5V/DIV 5V/DIV VGATE VGATE VGATE 10V/DIV 10V/DIV 10V/DIV ICABLE ICABLE ICABLE 0.5A/DIV 0.5A/DIV 0.5A/DIV 20ms/DIV 436112 G07 1ms/DIV 436112 G08 50µs/DIV 436112 G09 FIGURE 5 CIRCUIT FIGURE 5 CIRCUIT FIGURE 5 CIRCUIT R R IN = 150mΩ, LIN = 0.7µH IN = 150mΩ, LIN = 0.7µH RIN = 150mΩ, LIN = 0.7µH R R SENSE = 25mΩ SENSE = 25mΩ RSENSE = 25mΩ LOAD = 10Ω, C LOAD = 10Ω, C OUT = 10µF OUT = 10µF LOAD = 10Ω, COUT = 10µF Rev C 4 For more information www.analog.com 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