SN34063P PDF даташит
Спецификация SN34063P изготовлена «KODENSHI» и имеет функцию, называемую «DC/DC Converter Controller». |
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Детали детали
Номер произв | SN34063P |
Описание | DC/DC Converter Controller |
Производители | KODENSHI |
логотип |
11 Pages
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SN34063x
DC/DC Converter Controller
Description
The SN34063 is a monolithic control circuit containing the primary functions required for DC-to-DC converters. These devices
consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current
limit circuit, driver and high current output switch. This series was specifically designed to be incorporated in Step-Down and
Step-Up and Voltage-Inverting applications with a minimum number of external components.
Features
• Operation from 3.0V to 40V input.
• Low Standby Current
• Current Limiting
• Output Switch Current to 1.5A
• Output Voltage Adjustable
• Frequency Operation to 100kHz
• Precision 2% Reference
▲ Marking Information
SN34063 (1)
YYWW (2)
(1)Device Code
(2)Year & Week Code
Ordering Information
Type NO.
SN34063
SN34063P
Pin Connection
Marking
S34063
S34063
Package Code
SOP-8
DIP-8
SOP-8
DIP-8
KSD-I7F021
1
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Block Diagram
SN34063
Absolute Maximum Ratings
Characteristic
Symbol
Power Supply Voltage
VCC
Comparator Input Voltage Range
VIR
Switch Collector Voltage
VC(Switch)
Switch Emitter Voltage (Vpin 1 = 40 V)
VE(Switch)
Switch Collector to Emitter Voltage
VCE(Switch)
Driver Collector Voltage
VC(Driver)
Driver Collector Current (Note 1)
IC(Driver)
Switch Current
ISW
Power Dissipation
PD
Operating Junction Temperature
TJ
Operating Ambient Temperature Range
TA
Storage Temperature Range
Tstg
* Note 1 : Maximum package power dissipation limits must be observed.
KSD-I7F021
Rating
40
-0.3~+40
40
40
40
40
100
1.5
500
+150
-40~+85
-65~+150
[Ta=25℃]
Unit
V
V
V
V
V
V
mA
A
mW
℃
℃
℃
2
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SN34063x
Electrical Characteristics
(VCC = 5.0 V, TA = -40℃ to +85℃, unless otherwise specified.)
Characteristic
OSCILLATOR
Frequency (VPin 5 = 0 V, CT = 1.0 nF, TA = 25°C)
Charge Current (VCC = 5.0 V to 40 V, TA = 25°C)
Discharge Current (VCC = 5.0 V to 40 V, TA = 25°C)
Discharge to Charge Current Ratio (Pin 7 to VCC, TA = 25°C)
Current Limit Sense Voltage (Ichg = Idischg, TA = 25°C)
OUTPUT SWITCH (Note 2)
Saturation Voltage, Darlington Connection
( ISW = 1.0 A, Pins 1, 8 connected)
Symbol Min Typ Max Unit
fosc 24 33 42 kHz
Ichg 24 33 42 uA
Idischg
140 200 260 uA
Idischg/Ichg
5.2
6.2
7.5
-
VIpk(sense) 250 300 350 mV
VCE(sat)
-
1.0 1.3
V
Saturation Voltage (Note 3)
(ISW = 1.0 A, RPin 8 = 82Ω to VCC, Forced β= 20)
DC Current Gain (ISW = 1.0 A, VCE = 5.0 V, TA = 25°C)
Collector Off − State Current (VCE = 40 V)
COMPARATOR
VCE(sat)
hFE
IC(off)
- 0.45 0.7 V
50 120
-
-
-
0.01 100
uA
Threshold Voltage
TA = 25°C
TA = -40°C to +85°C
Vth
1.225 1.25 1.275
V
1.210 1.25 1.290
Threshold Voltage Line Regulation (VCC = 3.0 V to 40 V)
Input Bias Current (VIN = 0 V)
TOTAL DEVICE
Regline - 1.4 5.0 mV
IIB - -40 -400 nA
Supply Current (VCC = 5.0 V to 40 V, CT = 1.0 nF, Pin 7 = VCC,
VPin 5 > Vth, Pin 2 = GND, remaining pins open)
ICC - 2.5 4.0 mA
Note 2 : Maximum package power dissipation limits must be observed.
Note 3 : 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 2.0us 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:
Forced β of output switch :
IC output
≥ 10
IC driver – 7.0mA
* The 100Ω resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts.
KSD-I7F021
3
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Номер в каталоге | Описание | Производители |
SN34063 | DC/DC Converter Controller | KODENSHI |
SN34063P | DC/DC Converter Controller | KODENSHI |
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