CP34063
1.5A,Step-Up/Down/Inverting Switching Regulators
t on-off , OUTPUT SWITCH ON OFF TIME (
µ
s)
1000
V OSC, OSCILLATOR VOLTAGE (V)
500
200
100
50
20
10
5.0
2.0
1.0
0.01 0.02
t
off
V
CC
= 5.0 V
Pin 7 = V
CC
Pin 5 = Gnd
T
A
= 25°C
t
on
V
CC
= 5.0 V
Pin 7 = V
CC
Pin 2 = Gnd
Pins 1, 5, 8 = Open
C
T
= 1.0 nF
T
A
= 25°C
10
µs/DIV
0.05 0.1 0.2
0.5 1.0 2.0
C
T
, OSCILLATOR TIMING CAPACITOR (nF)
5.0 10
1.8
VCE(sat), SATURATION VOLTAGE (V)
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0
Figure 2. Output Switch On–Off Time versus
Oscillator Timing Capacitor
VCE(sat), SATURATION VOLTAGE (V)
Figure 3. Timing Capacitor Waveform
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
0.2
0.4
0.6
0.8
1.0
1.2
I
C
, COLLECTOR CURRENT(A)
1.4
1.6
V
CC
= 5.0 V
Pin 7 = V
CC
Pins 2, 3, 5 = Gnd
T
A
= 25°C
(See Note 7)
Darlington Connection
Forced
β
= 20
V
CC
= 5.0 V
Pins 1, 7, 8 = V
CC
Pins 3, 5 = Gnd
T
A
= 25°C
(See Note 7)
0.2
0.4
0.6
0.8
1.0
1.2
I
E
, EMITTER CURRENT (A)
1.4
1.6
Figure 4. Emitter Follower Configuration Output
Saturation Voltage versus Emitter Current
VIPK(sense), CURRENT LIMIT SENSE VOLTAGE (V)
Figure 5. Common Emitter Configuration Output
Switch Saturation Voltage versus
Collector Current
3.6
400
380
360
340
320
300
280
260
240
220
200
-55
-25
0
25
50
75
T
A
, AMBIENT TEMPERATURE (°C)
100
125
I CC, SUPPLY CURRENT (mA)
V
CC
= 5.0 V
I
chg
= I
dischg
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0
0
5.0
10
C
T
= 1.0 nF
Pin 7 = V
CC
Pin 2 = Gnd
15
20
25
30
V
CC
, SUPPLY VOLTAGE (V)
35
40
Figure 6. Current Limit Sense Voltage
versus Temperature
Figure 7. Standby Supply Current versus
Supply Voltage
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 4 of 10
Rev 1.1 Jul.18,2003
Fax:886-3-3521052
200 mV/DIV
CERAMATE [ CERAMATE TECHNICAL ]
