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TL1451ACDBLE Arkusz danych(PDF) 4 Page - Texas Instruments

Numer części TL1451ACDBLE
Szczegółowy opis  DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS
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Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI - Texas Instruments

TL1451ACDBLE Arkusz danych(HTML) 4 Page - Texas Instruments

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TL1451A
DUAL PULSEWIDTHMODULATION CONTROL CIRCUITS
SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999
4
www.ti.com
electrical characteristics over recommended operating free-air temperature range, VCC = 6 V,
f = 200 kHz (unless otherwise noted)
reference section
PARAMETER
TEST CONDITIONS
TL1451AC
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
Output voltage (pin 16)
IO = 1 mA
2.4
2.5
2.6
V
O tp t oltage change
ith temperat re
TA = –20°C to 25°C
–0.1%
±1%
Output voltage change with temperature
TA = 25°C to 85°C
–0.2%
±1%
Input voltage regulation
VCC = 3.6 V to 40 V
2
12.5
mV
Output voltage regulation
IO = 0.1 mA to 1 mA
1
7.5
mV
Short-circuit output current
VO = 0
3
10
30
mA
† All typical values are at TA = 25°C.
undervoltage lockout section
PARAMETER
TEST CONDITIONS
TL1451AC
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
Upper threshold voltage (VCC)
2.72
V
Lower threshold voltage (VCC)
IO( f) 01mA
TA 25°C
2.6
V
Hysteresis (VCC)
IO(ref) = 0.1 mA,
TA = 25°C
80
120
mV
Reset threshold voltage (VCC)
1.5
1.9
V
† All typical values are at TA = 25°C.
short-circuit protection control section
PARAMETER
TEST CONDITIONS
TL1451AC
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
Input threshold voltage (SCP)
TA = 25°C
0.65
0.7
0.75
V
Standby voltage (SCP)
No pullup
140
185
230
mV
Latched input voltage (SCP)
No pullup
60
120
mV
Input (source) current
VI = 0.7 V,
TA = 25°C
–10
–15
–20
µA
Comparator threshold voltage (FEEDBACK)
1.18
V
† All typical values are at TA = 25°C.
oscillator section
PARAMETER
TEST CONDITIONS
TL1451C
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
Frequency
CT = 330 pF,
RT = 10 kΩ
200
kHz
Standard deviation of frequency
CT = 330 pF,
RT = 10 kΩ
10%
Frequency change with voltage
VCC = 3.6 V to 40 V
1%
Frequency change with temperature
TA = –20°C to 25°C
–0.4%
±2%
Frequency change with temperature
TA = 25°C to 85°C
–0.2%
±2%
† All typical values are at TA = 25°C.


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