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参数资料
| 型号： | TL1454IDR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A DUAL SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | PLASTIC, SO-16 |
| 文件页数： | 2/25页 |
| 文件大小： | 412K |
| 代理商： | TL1454IDR |
TL1454, TL1454Y
DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM)
CONTROL CIRCUIT
SLVS086B – APRIL 1995 – REVISED NOVEMBER 1997
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
electrical characteristics over recommended operating free-air temperature range, VCC = 6 V,
fosc = 500 kHz (unless otherwise noted) (continued)
supply current
PARAMETER
TEST CONDITIONS
TL1454
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ICC(stby)
Standby supply current
RT open,
CT = 1.5 V, No load,
VO (COMP1, COMP2) = 1.25 V,
3.1
6
mA
ICC(average)
Average supply current
RT = 10 k,
50% duty cycle,
CT = 120 pF,
Outputs open
3.5
7
mA
electrical characteristics, VCC = 6 V, fosc = 500 kHz, TA = 25°C (unless otherwise noted)
reference
PARAMETER
TEST CONDITIONS
TL1454Y
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Vref
Output voltage, REF
IO = 1 mA,
1.25
V
Input regulation
VOC = 3.6 V to 20 V,
IO = 1 mA
2
mV
Output regulation
IO = 0.1 mA to 1 mA
1
mV
Output voltage change with temperature
IO = 1 mA
– 1.25
mV
Output voltage change with temperature
IO = 1 mA
–2.5
mV
IOS
Short-circuit output current
Vref = 0 V
30
mA
undervoltage lockout (UVLO)
PARAMETER
TEST CONDITIONS
TL1454Y
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIT +
Positive-going threshold voltage
2.9
V
VIT –
Negative-going threshold voltage
2.7
V
Vhys
Hysteresis, VIT + – VIT –
200
mV
short-circuit protection (SCP)
PARAMETER
TEST CONDITIONS
TL1454Y
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIT
Input threshold voltage
1
V
Vstby
Standby voltage
No pullup
185
mV
VI(latched)
Latched-mode input voltage
No pullup
60
mV
VIT(COMP)
Comparator threshold voltage
COMP1, COMP2
1
V
Input source current
VO(SCP) = 0
–15
A
This symbol is not presently listed within EIA / JEDEC standards for semiconductor symbology.
oscillator
PARAMETER
TEST CONDITIONS
TL1454Y
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
fosc
Frequency
CT = 120 pF,
RT = 10 k
500
kHz
Standard deviation of frequency
50
kHz
Frequency change with voltage
VCC = 3.6 V to 20 V
5
kHz
Frequency change with temperature
–2
kHz
Frequency change with temperature
–10
kHz
Maximum ramp voltage
1.8
V
Minimum ramp voltage
1.1
V
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TL1454IN | 制造商:TI 制造商全称:Texas Instruments 功能描述:DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM) CONTROL CIRCUIT |
| TL1454N | 制造商:TI 制造商全称:Texas Instruments 功能描述:DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM) CONTROL CIRCUIT |
| TL1454PW | 制造商:TI 制造商全称:Texas Instruments 功能描述:DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM) CONTROL CIRCUIT |
| TL1454Y | 制造商:TI 制造商全称:Texas Instruments 功能描述:DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM) CONTROL CIRCUIT |
| TL1454YD | 制造商:TI 制造商全称:Texas Instruments 功能描述:DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM) CONTROL CIRCUIT |
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