Datasheet LTC1174, LTC1174-3.3, LTC1174-5 (Analog Devices) - 4

LTC1174 LTC1174-3.3/LTC1174-5
ELECTRICAL CHARACTERISTICS Note 3:
Guaranteed by design.
Note 5:
Current into Pin 6 only, measured without electrolytic input
Note 4:
Dynamic supply current is higher due to the gate charge being capacitor. delivered at the switching frequency.
Note 6:
The off-time is wafer-sort trimmed.
W U TYPICAL PERFOR A CE CHARACTERISTICS Efficiency vs Load Current Efficiency vs Load Current Efficiency vs Load Current
100 100 100 95 95 95 VIN = 6V VIN = 6V VIN = 6V 90 90 90 VIN = 9V V V IN = 9V IN = 9V 85 85 85 EFFICIENCY (%) 80 EFFICIENCY (%) 80 EFFICIENCY (%) 80 L = 50µH V L = 50µH L = 100µH OUT = 5V 75 I VOUT = 5V VOUT = 5V PGM = 0V 75 75 COIL = CTX50-4 IPGM = VIN IPGM = VIN COIL = CTX50-4 COIL = CTX100-4 70 70 70 1 10 100 200 1 10 100 400 1 10 100 500 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) 1174 G01 1174 G02 1174 G03
Efficiency vs Load Current Efficiency vs Load Current Efficiency vs Load Current
100 100 100 VIN = 5V V 90 VIN = 5V 90 IN = 5V 90 VIN = 9V V V IN = 9V IN = 9V 80 80 80 70 70 70 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) L = 50µH L = 50µH L = 100µH 60 V 60 60 OUT = 3.3V V V OUT = 3.3V OUT = 3.3V IPGM = 0V I I PGM = VIN PGM = VIN COIL = CTX50-4 COIL = CTX50-4 COIL = CTX100-4 50 50 50 1 10 100 300 1 10 100 500 1 10 100 500 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) 1174 G04 1174 G05 1174 G06 1174fe 4