FAN1950 Datasheet, PDF (7/11 Pages) Fairchild Semiconductor – 1.5A Low-Voltage Low-Dropout Regulator

Typical Performance Characteristics (continued)
FAN1950/FAN1951
Load Transient Response
Vin=2.5V, Vout=1.8V, Cin=10µF Ceramic
Load Transient Response
Vin=2.5V, Vout=1.8V, Cin=10µF Ceramic
Cout = 10µF Tantalum (ESR~700mΩ)
Ch1 – Vout (AC, 0.5V/div) Ch2 – Load Current (1A/div.)
1.834
Vout vs. Temperature
1.824
1.814
1.804
1.794
1.784
1.774
1.764
-100
-50
0
50
100
150
Junction Temperature (°C)
Iout = 10 mA; Vout = 1.8V
FAN1950D18 Ripple Rejection (PSRR)
Cout = 10µF Ceramic
Ch1 – Vout (AC, 0.5V/div.) Ch2 – Load Current (1A/div.)
2.550
2.525
Vout vs. Temperature (°C)
(10 mA Load)
2.500
2.475
2.450
-50
-25 0 25 50 75 100 125 150
Junction Temperature (°C)
Iout = 10 mA; Vout = 2.5V
FAN1950D25 Ripple Rejection (PSRR)
Vin = 5V
Vin = 3V
Vin = 3V and 5V Vout = 1.8V Iload = 1A
Cin = Cout = 10µF/ 6.3V Tantalum
PSRR – 10dB/div
Vin = 5V Vout = 2.5V Iload = 1A
Cin = Cout = 10µF/ 6.3V Tantalum
PSRR – 10dB/div
REV. 0.1.6 8/30/04
7