Datasheet LTC1174, LTC1174-3.3, LTC1174-5 (Analog Devices) - 5

LTC1174 LTC1174-3.3/LTC1174-5
W U TYPICAL PERFOR A CE CHARACTERISTICS Switch Leakage Current Line Regulation vs Temperature Efficiency vs Input Voltage
6 180 95 I V 4 LOAD = 100mA IN = 13.5V I 160 PGM = 0V 94 2 140 93 0 120 L = 100µH – 2 92 100 (mV) L = 50µH – 4 91 OUT 80 ∆V –6 90 60 EFFICIENCY (%) – 8 LEAKAGE CURRENT (nA) V = 5V 40 89 OUT –10 IPGM = 0V I –12 20 88 LOAD = 75mA CORE = CTX (Kool Mµ®) –14 0 87 0 2 4 6 8 10 12 14 0 20 40 60 80 100 5 6 7 8 9 10 11 12 13 14 INPUT VOLTAGE (V) TEMPERATURE (°C) INPUT VOLTAGE (V) 1174 G07 1174 G08 1174 G09
Efficiency vs Input Voltage Supply Current in Shutdown DC Supply Current
95 1.8 500 I V PGM = 0V OUT = 5V ACTIVE MODE 1.6 SHUTDOWN = 0V 450 94 L = 100µH TA = 25°C COIL = CTX100-4 400 I 1.4 CURRENT INTO PIN 6 ONLY PGM = VIN µA) µA) 350 93 1.2 300 I 1.0 LOAD = 100mA 92 250 I I LOAD = 300mA PGM = 0V 0.8 IPGM = VIN 200 EFFICIENCY (%) 91 0.6 SLEEP MODE 150 SUPPLY CURRENT ( SUPPLY CURRENT ( 0.4 100 90 0.2 50 TA = 25°C 89 0 0 5 6 7 8 9 10 11 12 13 14 0 2 4 6 8 10 12 14 0 2 4 6 8 10 12 14 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 1174 G10 1174 G11 1174 G12
Operating Frequency Switch Resistance vs vs V Input Voltage IN – VOUT Off-Time vs Output Voltage
2.0 1.7 50 V T OUT = 5V A = 25°C 1.6 1.5 40 1.5 1.4 TA = 25°C ) Ω 1.3 µs) 30 ( 1.0 1.2 (ON) TA = 70°C RDS 1.1 20 LTC1174HV OFF-TIME ( 1.0 LTC1174-5 NORMALIZED FREQUENCY 0.5 LTC1174HV-5 0.9 10 LTC1174 0.8 LTC1174-3.3 LTC1174HV-3.3 0 0.7 0 0 1 2 3 4 5 6 7 8 9 4 6 8 10 12 14 16 18 20 0 1 2 3 4 5 (VIN – VOUT) VOLTAGE (V) INPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 1174 G13 1174 G14 1174 G15 1174fe 5