Datasheet NCP1421 (ON Semiconductor) - 5

NCP1421 TYPICAL OPERATING CHARACTERISTICS
1.220 1.220 V V OUT = 3.3 V IN = 1.5 V /V /V C F L = 10 H REF = 200 nF F I RE VIN = 2.0 V REF = 0 mA RE 1.210 CIN = 22 F 1.210 TA = 25°C COUT = 22 F GE, V C GE, V REF = 1.0 F TA T TA A = 25_C 1.200 VIN = 2.5 V 1.200 1.190 1.190 REFERENCE VOL REFERENCE VOL 1.180 1.180 1 10 100 1000 1.5 2 2.5 3 3.5 4 4.5 5 OUTPUT CURRENT, ILOAD/mA VOLTAGE AT OUT PIN, VOUT/V
Figure 2. Reference Voltage vs. Output Current Figure 3. Reference Voltage vs. Voltage at OUT Pin
1.205 0.6 / N) V /V OUT = 3.3 V F (O RE 1.200 0.5 DS 0.4 1.195 P−FET (M2) TAGE, V ANCE, R 0.3 1.190 0.2 N−FET (M1) V 1.185 OUT = 3.3 V CREF = 200 nF 0.1 REFERENCE VOL IREF = 0 mA SWITCH ON RESIST 1.180 0.0 −40 −20 0 20 40 60 80 100 −40 −20 0 20 40 60 80 100 AMBIENT TEMPERATURE, TA/°C AMBIENT TEMPERATURE, TA/°C
Figure 4. Reference Voltage vs. Temperature Figure 5. Switch ON Resistance vs. Temperature
1.0 1.6 /S ON Y 0.9 1.4 TTER /V TT 0.8 BA TUP BA R 1.1 A 0.7 LTAGE, V O V 0.9 0.6 MINIMUM ST SWITCH MAXIMUM, ON TIME, t TA = 25°C L X 0.5 0.6 −40 −20 0 20 40 60 80 100 0 50 100 150 200 250 AMBIENT TEMPERATURE, TA/°C OUTPUT LOADING CURRENT, ILOAD/mA
Figure 6. LX Switch Max. ON Time vs. Temperature Figure 7. Minimum Startup Battery Voltage vs. Loading Current http://onsemi.com 5