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參數(shù)資料
| 型號(hào)： | TL751M12CKTG |
| 廠商： | Texas Instruments, Inc. |
| 元件分類(lèi)： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | LOW-DROPOUT VOLTAGE REGULATORS |
| 中文描述： | 低壓差電壓調(diào)節(jié)器 |
| 文件頁(yè)數(shù)： | 7/12頁(yè) |
| 文件大小： | 169K |
| 代理商： | TL751M12CKTG |
TL750M TL751MSERIES
LOW-DROPOUT VOLTAGE REGULATORS
SLVS021H – JANUARY 1988 – REVISED JANUARY 2000
7
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 3)
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 3: 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 1 and 2
can establish the capacitance value and ESR range for the best regulator performance.
Figure 1 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 because it is the worst case. Figure 2
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 1 can be adjusted for different capacitor values. For example, where the minimum load needed is 200 mA,
Figure 2 suggests an ESR range of 0.8
to 2
for 10
μ
F. Figure 2 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 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 1 and 2.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TL751M12CKTGR | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| TL751M12MJGB | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| 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(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TL751M12QKVURQ1 | 功能描述:低壓差穩(wěn)壓器 - LDO AC Sgl Output LDO, 750mA,Fixed 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(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TL751M-Q1 | 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:AUTOMOTIVE LOW-DROPOUT VOLTAGE REGULATORS |
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