參數(shù)資料
型號(hào)： TL751M10
廠商： Texas Instruments, Inc.
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： Low-Dropout Voltage Regulators(10V,低壓差pnp,具關(guān)斷,小電流電壓穩(wěn)壓器)
中文描述： 低壓差穩(wěn)壓器（10V的低壓差pnp型，具關(guān)斷，小電流電壓穩(wěn)壓器）
文件頁(yè)數(shù)： 11/21頁(yè)
文件大?。?/td> 463K
代理商： TL751M10
TL750M, TL751M
LOW-DROPOUT VOLTAGE REGULATORS
SLVS021E – JANUARY 1988 – REVISED OCTOBER 1996
11
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TL751M12Y electrical characteristics, V
I
= 14 V, I
O
= 300 mA, ENABLE at 0 V, T
J
= 25
°
C (unless
otherwise noted) (see Note 2)
PARAMETER
TEST CONDITIONS
TL750M12Y
MIN
UNIT
TYP
MAX
Output voltage
12
V
Input voltage regulation
VI = 14 V to 19 V,
VI = 13 V to 26 V,
VI = 13 V to 23 V,
IO = 5 mA to 750 mA
f = 10 Hz to 100 kHz
IO = 250 mA
IO = 250 mA
f = 120 Hz
15
mV
20
Ripple rejection
55
dB
Output voltage regulation
30
mV
μ
V
mA
Output noise voltage
1000
Bias current
IO = 750 mA
60
NOTE 2: Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be
taken into account separately. All characteristics are measured with a 0.1-
μ
F capacitor across the input and a 10-
μ
F tantalum capacitor
on the output with equivalent series resistance within the guidelines shown in Figure 3.
PARAMETER MEASUREMENT INFORMATION
The TL751Mxx is a low-dropout regulator. This means that the capacitance loading is important to the performance
of the regulator because it is a vital part of the control loop. The capacitor value and the equivalent series resistance
(ESR) both affect the control loop and must be defined for the load range and the temperature range. Figures 3 and 4
can establish the capacitance value and ESR range for the best regulator performance.
Figure 3 shows the recommended range of ESR for a given load with a 10-
μ
F capacitor on the output. This figure
also shows a maximum ESR limit of 2
and a load-dependent minimum ESR limit.
For applications with varying loads, the lightest load condition should be chosen since it is the worst case. Figure 4
shows the relationship of the reciprocal of ESR to the square root of the capacitance with a minimum capacitance
limit of 10
μ
F and a maximum ESR limit of 2
. This figure establishes the amount that the minimum ESR limit shown
in Figure 3 can be adjusted for different capacitor values. For example, where the minimum load needed is 200 mA,
Figure 4 suggests an ESR range of 0.8
to 2
for 10
μ
F. Figure 4 shows that changing the capacitor from 10
μ
F
to 400
μ
F can change the ESR minimum by greater than 3/0.5 (or 6). Therefore, the new minimum ESR value is 0.8/6
(or 0.13
). This now allows an ESR range of 0.13
to 2
, achieving an expanded ESR range by using a larger
capacitor at the output. For better stability in low-current applications, a small resistance placed in series with the
capacitor (see Table 1) is recommended, so that ESRs better approximate those shown in Figures 3 and 4.
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TL751M12QKTTRQ1 功能描述:低壓差穩(wěn)壓器 - LDO AC Sgl Output LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
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