參數(shù)資料
型號： TL494CD
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： SMPS Controller
中文描述： 0.25 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO16
封裝： SOP-16
文件頁數(shù)： 4/17頁
文件大小： 449K
代理商： TL494CD
www.ti.com
N
n
1
(x
n
X)
2
N
1
Electrical Characteristics
over recommended operating free-air temperature range, V
CC
= 15 V, f = 10 kHz (unless otherwise noted)
Reference Section
Oscillator Section
C
T
= 0.01
μ
F, R
T
= 12 k
(see Figure 1)
Error-Amplifier Section
See Figure 2
TL494
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS074E–JANUARY 1983–REVISED FEBRUARY 2005
TL494C, TL494I
MIN TYP
(2)
4.75
PARAMETER
TEST CONDITIONS
(1)
UNIT
MAX
5.25
Output voltage (REF)
Input regulation
Output regulation
Output voltage change with temperature
Short-circuit output current
(3)
I
O
= 1 mA
V
CC
= 7 V to 40 V
I
O
= 1 mA to 10 mA
T
A
= MIN to MAX
REF = 0 V
5
2
1
2
V
25
15
10
mV
mV
mV/V
mA
25
(1)
(2)
(3)
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
All typical values, except for parameter changes with temperature, are at T
A
= 25
°
C.
Duration of short circuit should not exceed one second.
TL494C, TL494I
MIN TYP
(2)
PARAMETER
TEST CONDITIONS
(1)
UNIT
MAX
Frequency
Standard deviation of frequency
(3)
Frequency change with voltage
Frequency change with temperature
(4)
10
100
kHz
Hz/kHz
Hz/kHz
Hz/kHz
All values of V
CC
, C
T
, R
T
, and T
A
constant
V
CC
= 7 V to 40 V, T
A
= 25
°
C
T
A
= MIN to MAX
1
10
(1)
(2)
(3)
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
All typical values, except for parameter changes with temperature, are at T
= 25
°
C.
Standard deviation is a measure of the statistical distribution about the mean as derived from the formula:
(4)
Temperature coefficient of timing capacitor and timing resistor are not taken into account.
TL494C, TL494I
MIN TYP
(1)
PARAMETER
TEST CONDITIONS
UNIT
MAX
Input offset voltage
Input offset current
Input bias current
V
O
(FEEDBACK) = 2.5 V
V
O
(FEEDBACK) = 2.5 V
V
O
(FEEDBACK) = 2.5 V
2
10
250
mV
nA
μ
A
25
0.2
1
–0.3 to
V
CC
– 2
Common-mode input voltage range
V
CC
= 7 V to 40 V
V
Open-loop voltage amplification
Unity-gain bandwidth
Common-mode rejection ratio
Output sink current (FEEDBACK)
Output source current (FEEDBACK)
V
O
= 3 V, V
O
= 0.5 V to 3.5 V, R
L
= 2 k
V
O
= 0.5 V to 3.5 V, R
L
= 2 k
V
O
= 40 V, T
A
= 25
°
C
V
ID
= –15 mV to –5 V, V (FEEDBACK) = 0.7 V
V
ID
= 15 mV to 5 V, V (FEEDBACK) = 3.5 V
70
95
800
80
0.7
dB
kHz
dB
mA
mA
65
0.3
–2
(1)
All typical values, except for parameter changes with temperature, are at T
A
= 25
°
C.
4
相關(guān)PDF資料
PDF描述
TL494CN SMPS Controller
TL496C Replacement for Texas Instruments part number 54AS826/B3A. Buy from authorized manufacturer Rochester Electronics.
TL496CD Replacement for Texas Instruments part number 54AS826/BKA. Buy from authorized manufacturer Rochester Electronics.
TL496CP Replacement for Texas Instruments part number 54AS826/BLA. Buy from authorized manufacturer Rochester Electronics.
TL496Y Replacement for Texas Instruments part number 54ACT11353/B2A. Buy from authorized manufacturer Rochester Electronics.
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TL494CDB 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述:
TL494CDBR 功能描述:電壓模式 PWM 控制器 Control Circuit RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
TL494CDBRE4 功能描述:電壓模式 PWM 控制器 Control Circuit RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
TL494CDBRG4 功能描述:電壓模式 PWM 控制器 PWM Control Circuit RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
TL494CDE4 功能描述:電壓模式 PWM 控制器 Control Circuit RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
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