TC1221 Datasheet, PDF (10/16 Pages) Microchip Technology – High Frequency Switched Capacitor Voltage Converters with Shutdown in SOT Packages

TC1221/TC1222
5.0 TYPICAL CHARACTERISTICS (CONTINUED)
TC1222 Supply Current vs. Supply Voltage
1750
1500
C1 = C2 = C3 = 0.22µF,
RL = ∞, +25°C
1250
1000
750
500
250
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
TC1222 Output Resistance vs. Supply Voltage
65
C1 = C2 = C3 = 0.22µF, +25°C
60
55
50
45
40
35
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
160
120
80
40
0
0
TC1222 Output Voltage Ripple
vs. Capacitance , C₂
V_IN = 3.3V, RL = 1K, +25°C
V_IN = 5.0V, RL = 1K, +25°C
V_IN = 5.0V
V_IN = 3.3V
1
2
3
4
5
CAPACITANCE (µF)
500
450
400
350
300
250
200
150
100
0
TC1222 Output Voltage Droop
vs. Capacitance, C₁ = C₂
V_IN = 3.3V, RL = 1K, +25°C
V_IN = 5.0V, RL = 1K, +25°C
V_IN = 5.0V
V_IN = 3.3V
1
2
3
4
5
CAPACITANCE (µF)
TC1222 Oscillator Frequency
vs. Supply Voltage
750
C1 = C2 = C3 = 0.22µF,
RL = ∞, +25°C
700
650
600
550
500
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
DS21367B-page 10
 2002 Microchip Technology Inc.