MC34063EB STMicroelectronics, MC34063EB Datasheet - Page 7

• Manufacturer Part Number: MC34063EB
• Description: DC-DC CONVERTER CONTROL CIRCUITS
• Manufacturer: STMicroelectronics

Specifications of MC34063EB

• Low Quiescent Current: 2.5 mA (typ.)

Table 8.
Note:
a. Current less due to a built in 1 kΩ anti leakage resistor.
V
Symbol
START-UP
I
CC
1
2
3
4
Supply current
Start-up voltage
Total device
Maximum package power dissipation limit must be observed.
T
T
If darlington configuration is not used, care must be taken to avoid deep saturation of output
switch. The resulting switch-off time may be adversely affected. In a darlington configuration
the following output driver condition is suggested:
Forced
Start-up voltage is the minimum power supply voltage at which the internal oscillator begins
to work.
LOW
LOW
= 0 °C, T
= -40 °C, T
Parameter
β
of output current switch = I
(Note
HIGH
HIGH
4)
= 70 °C (AC and EC series); T
= 125 °C (EB series).
V
C
PIN 7 = V
V
PIN 2 = GND
Remaining pins
open
T
C
A
CC
PIN5
T
T
= 25°C
= 1 nF
= 1 µF, PIN 5 = 0
= 5 to 40 V
>V
TH
CC
Test conditions
COUTPUT
/(I
for MC34063A
for MC34063E
for MC34063A
for MC34063E
CDRIVER
LOW
= -40 °C, T
- 1 mA
Min.
(a)
)
≥
HIGH
10
Typ.
2.5
1.5
2.1
1.5
= 85 °C (AB series);
Max.
4
4
Unit
mA
V
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