參數(shù)資料
型號： TL598Y
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 0.25 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, UUC
封裝： DIE
文件頁數(shù)： 8/13頁
文件大小： 210K
代理商： TL598Y
TL598
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS053C – FEBRUARY 1988 – REVISED JULY 1999
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range, VCC = 15 V
(unless otherwise noted)
reference section (see Note 4)
PARAMETER
TEST CONDITIONS
TL598C
TL598Q
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
Output voltage (REF)
IO =1mA
TA = 25°C
4.95
5
5.05
4.95
5
5.05
V
Output voltage (REF)
IO = 1 mA
TA = full range
4.9
5.1
4.9
5.1
V
Input regulation
VCC = 7 V to 40 V
TA = 25°C
2
25
2
22
mV
Output regulation
IO =1mAto10mA
TA = 25°C
1
15
1
15
mV
Output regulation
IO = 1 mA to 10 mA
TA = full range
50
80
mV
Output voltage change with
temperature
TA = MIN to MAX
2
10
2
10
mV/V
Short-circuit output current§
REF = 0 V
–10
–48
–10
–48
mA
Full range is 0
°C to 70°C for the TL598C, and –40°C to 125°C for the TL598Q.
All typical values except for parameter changes with temperature are at TA = 25°C.
§ Duration of the short circuit should not exceed one second.
NOTE 4: Pulse-testing techniques that maintain the junction temperature as close to the ambient temperature as possible must be used.
oscillator section, CT = 0.001 F, RT = 12 k (see Figure 1) (see Note 4)
PARAMETER
TEST CONDITIONS
TL598C, TL598Q
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Frequency
100
kHz
Standard deviation of frequency
All values of VCC, CT, RT, TA constant
100
Hz/kHz
Frequency change with voltage
VCC = 7 V to 40 V,
TA = 25°C
1
10
Hz/kHz
Frequency change with temperature#
TA = full range
70
120
Hz/kHz
Frequency change with temperature#
TA = full range,
CT = 0.01 F
50
80
Hz/kHz
Full range is 0
°C to 70°C for the TL598C, and –40°C to 125°C for the TL598Q.
All typical values except for parameter changes with temperature are at TA = 25°C.
Standard deviation is a measure of the statistical distribution about the mean as derived from the formula:
# Effects of temperature on external RT and CT are not taken into account.
NOTE 4. Pulse-testing techniques that maintain the junction temperature as close to the ambient temperature as possible must be used.
error amplifier section (see Note 4)
PARAMETER
TEST CONDITIONS
TL598C, TL598Q
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Input offset voltage
FEEDBACK = 2.5 V
2
10
mV
Input offset current
FEEDBACK = 2.5 V
25
250
nA
Input bias current
FEEDBACK = 2.5 V
0.2
1
A
Common-mode input voltage range
VCC = 7 V to 40 V
0 to
VCC–2
V
Open-loop voltage amplification
VO (FEEDBACK) = 3 V, VO (FEEDBACK) = 0.5 V to 3.5 V
70
95
dB
Unity-gain bandwidth
800
kHz
Common-mode rejection ratio
VCC = 40 V,
VIC = 6.5 V,
TA = 25°C
65
80
dB
Output sink current (FEEDBACK)
FEEDBACK = 0.5 V
0.3
0.7
mA
Output source current (FEEDBACK)
FEEDBACK = 3.5 V
–2
mA
Phase margin at unity gain
FEEDBACK = 0.5 V to 3.5 V,
RL = 2 k
65
°
Supply-voltage rejection ratio
FEEDBACK = 2.5 V,
VCC = 33 V,
RL = 2 k
100
dB
All typical values except for parameter changes with temperature are at TA = 25°C.
NOTE 4. Pulse-testing techniques that maintain the junction temperature as close to the ambient temperature as possible must be used.
s +
N
n
+1
xn–X
2
N–1
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