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參數(shù)資料
| 型號： | TC33063AEOATR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.35 A SWITCHING REGULATOR, 42 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 121K |
| 代理商： | TC33063AEOATR |
TC33063A
2
TC33063A -1 5/9/00
DC/DC Converter Control Circuits
ABSOLUTE MAXIMUM RATINGS*
Power Supply Voltage .................................. VCC = 40VDC
Comparator Input Voltage Range ... VIR = –0.3 to +40VDC
Switch Collector Voltage .................... VC(SWITCH) = 40VDC
Switch Emitter Voltage (VPin 1 = 40V) .. VE(SWITCH) = 40VDC
Switch Collector to Emitter Voltage .. VCE(SWITCH) = 40VDC
Driver Collector Voltage ..................... VC(DRIVER) = 40VDC
Driver Collector Current (Note 1) ....... IC(DRIVER) = 100mA
Switch Current .................................................. ISW = 1.5A
Power Dissipation and Thermal Characteristics
PDIP Package
TA = 25°C .............................................. PD = 1.25W
Thermal Resistance .........................
θJA = 100°C/W
SOIC Package
TA = 25°C ............................................ PD = 0.625W
Thermal Resistance .........................
θJA = 160°C/W
Operating Junction Temperature ..................... TJ =150°C
Operating Ambient Temperature Range
TC33063A ...................................... TA = -40 to +85°C
Storage Temperature Range ........ TSTG = –65 to +150°C
*This is a stress rating only, and functional operation of the device at these
or any other conditions beyond those indicated in the operation section of
the specifications is not implied. Exposure to absolute maximum ratings
conditions for extended periods of time may affect device reliability.
ELECTRICAL CHARACTERISTICS: VCC = 5.0V, TA = – 40°C to + 85°C [Note 3], unless otherwise specified.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Units
Oscillator
fOSC
Frequency (VPIN 5 = 0V, CT = 1.0nF, TA = 25°C)
24
33
42
kHz
ICHG
Charge Current (VCC = 5.0V to 40V, TA = 25°C)
24
35
42
A
IDISCHG
Discharge Current (VCC = 5.0V to 40V, TA = 25°C)
140
220
260
A
IDISCHG/ICHG
Discharge to Charge Current Ratio (Pin 7 to VCC, TA = 25°C)
5.2
6.5
7.5
–
VIPK(SENSE)
Current Limit Sense Voltage (ICHG = IDISCHG, TA = 25°C)
250
300
350
mV
Output Switch
VCE(SAT)
Saturation Voltage, Darlington Connection (Note 4)
—
1.0
1.3
V
(ISW = 1.0A, Pins 1, 8 connected)
VCE(sat)
Saturation Voltage, Darlington Connection
—
0.45
0.7
V
(ISW = 1.0A, RPIN 8 = 82W to VCC, Forced β ≈ 20)
hFE
DC Current Gain (ISW = 1.0A, VCE = 5.0V, TA = 25°C)
50
75
——
IC(OFF)
Collector Off–State Current (VCE = 40V)
—
0.01
100
A
Comparator
VTH
Threshold Voltage
TA = 25°C
1.225
1.25
1.275
V
1.21
—
1..29
RegLINE
Threshold Voltage Line Regulation
—
1.4
5.0
mV
(VCC = 3.0V to 40V)
IIB
Input Bias Current (VIN = 0V)
—–20
–400
nA
Total Device
ICC
Supply Current (VCC = 5.0V to 40V, CT =1.0nF, Pin 7 = VCC,
——
4.0
mA
VPin 5 > VTH, Pin 2 = GND, Remaining Pins Open)
NOTES: 1. Maximum package power dissipation limits must be observed.
2. ESD data available upon request.
3. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
4. If the output switch is driven into hard saturation (non–Darlington configuration) at low switch currents (
≤ 300mA) and high driver currents
(
≥ 30mA), it may take up to 2.0sec for it to come out of saturation. This condition will shorten the off time at frequencies ≥ 30kHz, 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 b of output switch :
IC OUTPUT
≥ 10
IC DRIVER – 7.0 mA*
*The 100
resistor in the emitter of the driver device requires about 7.0mA before the output switch conducts.
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