Datasheet LTC3569 (Analog Devices) - 7

LTC3569
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. Load Step Cross Talk, Pulse-Skipping, Load Step Cross Talk, Pulse-Skipping, VIN = 3.6V, CH1 = VOUT1, CH2 = VOUT2, VIN = 3.6V, CH1 = VOUT1, CH2 = VOUT2, CH3 = VOUT3, CH4 = ILOAD1 CH3 = VOUT3, CH4 = ILOAD2
CH1 CH1 100mV/DIV 20mV/DIV 9.6mVP-P 310mVP-P CH2 CH2 246mV 100mV/DIV 16.8mV P-P P-P 20mV/DIV CH3 20mV/DIV CH3 12mV 20mV/DIV P-P 8mVP-P CH4 CH4 1.2A 500mA/DIV 600mA 500mA/DIV 20µs/DIV 3569 G19 20µs/DIV 3569 G20
Load Step Cross Talk, Pulse-Skipping, V IN = 3.6V, CH1 = VOUT1, CH2 = VOUT2, CH3 = V I OUT3, CH4 = ILOAD3 SW Leakage vs VSUPPLY Buck 1
10000 V CH1 IN = 3.6V 20mV/DIV V 11.6mV FB = 0.9V P-P 1000 BUCK2, BUCK3 OFF CH2 11.2mV 20mV/DIV 100 P-P 85°C 10 CH3 266mV 100mV/DIV (nA) P-P I SW 1 25°C CH4 0.1 600mA 500mA/DIV –50°C 20µs/DIV 3569 G21 0.01 0.001 0 1 2 3 3.6 VSW (V) 3569 G22
Soft-Start Into Heavy Load, PS, VIN = Soft-Start Into Light Load, PS, VIN = 3.6V, CH1 = VOUT1, CH2 = VOUT2, CH3 3.6V, CH1 = VOUT1, CH2 = VOUT2, CH3 = VOUT3, CH4 = IIN, R2 = PGOOD = VOUT3, CH4 = IIN, R3 = PGOOD
CH1 500mV/DIV CH1 500mV/DIV CH3 500mV/DIV CH3 500mV/DIV CH2 500mV/DIV CH2 500mV/DIV R2 R3 2V/DIV 2V/DIV CH4 500mA/DIV CH4 50mA/DIV 400µs/DIV 3569 G23 400µs/DIV 3569 G24 3569fe For more information www.linear.com/LTC3569 7 Document Outline Features Applications Description Typical Application 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