CP34063
1.5A,Step-Up/Down/Inverting Switching Regulators
ELECTRICAL CHARACTERISTICS
(V
CC
= 5.0 V, T
A
= T
low
to T
high
[Note 4], unless otherwise specified.)
Characteristics
OSCILLATOR
Frequency (V
Pin 5
= 0 V, C
T
= 1.0 nF, T
A
= 25°C)
Charge Current (V
CC
= 5.0 V to 40 V, T
A
= 25°C)
Discharge Current (V
CC
= 5.0 V to 40 V, T
A
= 25°C)
Discharge to Charge Current Ratio (Pin 7 to V
CC
, T
A
= 25°C)
Current Limit Sense Voltage (I
chg
= I
dischg
, T
A
= 25°C)
OUTPUT SWITCH
(Note 5)
Saturation Voltage, Darlington Connection
( I
SW
= 1.0 A, Pins 1, 8 connected)
Saturation Voltage (Note 6)
(I
SW
= 1.0 A, R
Pin 8
= 82
Ω
to V
CC
, Forced
β
]
20)
DC Current Gain (I
SW
= 1.0 A, V
CE
= 5.0 V, T
A
= 25°C)
Collector Off–State Current (V
CE
= 40 V)
COMPARATOR
Threshold Voltage
T
A
= 25°C
T
A
= T
low
to T
high
Threshold Voltage Line Regulation (V
CC
= 3.0 V to 40 V)
Input Bias Current (V
in
= 0 V)
TOTAL DEVICE
Supply Current (V
CC
= 5.0 V to 40 V, C
T
= 1.0 nF, Pin 7 = V
CC
,
V
Pin 5
> V
th
, Pin 2 = Gnd, remaining pins open)
I
CC
–
2.5
4.0
mA
V
th
1.225
1.21
Reg
line
I
IB
–
–
1.25
–
1.4
–40
1.27
1.29
5.0
–400
mV
nA
V
V
CE(sat)
V
CE(sat)
h
FE
I
C(off)
–
–
50
–
1.0
0.45
120
0.01
1.3
0.7
–
100
V
V
–
µA
f
osc
I
chg
I
dischg
I
dischg
/I
chg
V
ipk(sense)
24
24
140
5.2
250
33
33
220
6.5
300
42
42
260
7.5
350
kHz
µA
µA
–
mV
Symbol
Min
Typ
Max
Unit
4. T
low
= 0°C for
CP34063
5. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
6. If the output switch is driven into hard saturation (non–Darlington configuration) at low switch currents (≤ 300 mA) and high driver currents
(≥ 30 mA), it may take up to 2.0
µs
for it to come out of saturation. This condition will shorten the off time at frequencies
≥
30 kHz, and is
magnified at high temperatures. This condition does not occur with a Darlington configuration, since the output switch cannot saturate. If a
non–Darlington configuration is used, the following output drive condition is recommended:
IC output
w
10
Forced
b
of output switch :
IC driver – 7.0 mA *
* The 100
Ω
resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts.
* 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 3 of 10
Rev 1.1 Jul.18,2003
Fax:886-3-3521052
CERAMATE [ CERAMATE TECHNICAL ]
