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)： 10/13頁
文件大?。?/td> 210K
代理商： TL598Y
TL598
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS053C – FEBRUARY 1988 – REVISED JULY 1999
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range, VCC = 15 V
(unless otherwise noted)
switching characteristics, TA = 25°C (see Note 4)
PARAMETER
TEST CONDITIONS
TL598C, TL598Q
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Output-voltage rise time
CL = 1500 pF,
VC = 15 V,
VCC = 15 V,
60
150
ns
Output-voltage fall time
See Figure 2
35
75
ns
NOTE 4. Pulse-testing techniques must be used that maintain the junction temperature as close to the ambient temperature as possible.
electrical characteristics, VCC = 15 V, TA = 25°C
reference section (see Note 4)
PARAMETER
TEST CONDITIONS
TL598Y
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Output voltage (REF)
IO = 1 mA
5
V
Input regulation
VCC = 7 V to 40 V
2
mV
Output regulation
IO = 1 mA to 10 mA
1
mV
Output-voltage change with temperature
2
mV/V
Short-circuit output current
REF = 0 V
–48
mA
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
TL598Y
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,
1
Hz/kHz
§ Standard deviation is a measure of the statistical distribution about the mean as derived from the formula:
s +
N
n
+1
xn–X
2
N–1
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
TL598Y
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Input offset voltage
Feedback = 2.5 V
2
mV
Input offset current
Feedback = 2.5 V
25
nA
Input bias current
Feedback = 2.5 V
0.2
A
Open-loop voltage amplification
VO (FEEDBACK) = 3 V, VO (FEEDBACK) = 0.5 V to 3.5 V
95
dB
Unity-gain bandwidth
800
kHz
Common-mode rejection ratio
VCC = 40 V,
VIC = 6.5 V,
80
dB
Output sink current (FEEDBACK)
FEEDBACK = 0.5 V
0.7
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
NOTE 4. Pulse-testing techniques that maintain the junction temperature as close to the ambient temperature as possible must be used.
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