MC33063A-Q1 Datasheet, PDF (4/14 Pages) Texas Instruments – 1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATOR

MC33063AĆQ1
1.5ĆA PEAK BOOST/BUCK/INVERTING SWITCHING REGULATOR
SLLS654A – APRIL 2005 – REVISED JANUARY 2007
TYPICAL CHARACTERISTICS
1000
VCC = 5 V
Pin 7 = VCC
Pin 5 = GND
100 ^{TA = 25°C}
tON
tOFF
10
1
0.01
0.1
1
10
CT, Oscillator Timing Capacitor (nF)
Figure 1. Output Switch On-Off Time vs
Oscillator Timing Capacitor
1.8
1.7
VCC = 5 V
Pin 1, 7, 8 = VCC
1.6 Pin 3, 5 = GND
1.5 ^{TA = 25°C}
1.4
1.3
1.2
1.1
1.10
00.0 0.2 0.4 0.6 0.8 11.0 1.2 1.4 1.6
IE, Emitter Current (A)
Figure 2. Output Switch Saturation Voltage vs
Emitter Current (Emitter-Follower Configuration)
1.4
Darlington Connection
1.2
1.0
Force Beta = 20
0.8
0.6
0.4
VCC = 5 V
Pin 7 = VCC
0.2
Pin 2, 3, 5 = GND
0.0
TA = 25°C
00.0 0.2 0.4 0.6 0.8 11.0 1.2 1.4 1.6
IC, Collector Current (A)
Figure 3. Output Switch Saturation Voltage vs
Collector Current (Common-Emitter Configuration)
380
360
VCC = 5 V
ICHG=DI _ISCHG
340
320
300
280
260
240
220
200
−50 −25 0
25 50 75 100 125
TA, Ambient Temperature (°C)
Figure 4. Current-Limit Sense Voltage vs
Temperature
3.6
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0.0
0
CT = 1 nF
Pin 7 = VCC
Pin 2 = GND
TA = 25°C
5 10 15 20 25 30 35 40
VCC, Supply Voltage (V)
Figure 5. Standby Supply Current vs
Supply Voltage
4
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