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參數(shù)資料
| 型號(hào)： | tps76xxx |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Low-Power 150-mA Low-Dropout Linear Regulators(低耗低壓差線性穩(wěn)壓器) |
| 中文描述： | 低功耗150mA的低壓差線性穩(wěn)壓器（低耗低壓差線性穩(wěn)壓器） |
| 文件頁(yè)數(shù)： | 13/17頁(yè) |
| 文件大?。?/td> | 238K |
| 代理商： | TPS76XXX |
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TPS76301, TPS76316, TPS76318, TPS76325, TPS76327
TPS76328, TPS76330, TPS76333, TPS76338, TPS76350
LOW-POWER 150-mA LOW-DROPOUT LINEAR REGULATORS
SLVS181D – DECEMBER 1998 – REVISED JUNE 1999
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
external capacitor requirements
Although not required, a 0.047-
μ
F or larger ceramic bypass input capacitor, connected between IN and GND
and located close to the TPS763xx, is recommended to improve transient response and noise rejection. A
higher-value electrolytic input capacitor may be necessary if large, fast-rise-time load transients are anticipated
and the device is located several inches from the power source.
Like all low dropout regulators, the TPS763xx requires an output capacitor connected between OUT and GND
to stabilize the internal loop control. The minimum recommended capacitance value is 4.7
μ
F and the ESR
(equivalent series resistance) must be between 0.2
and 10
. Capacitor values 4.7
μ
F or larger are
acceptable, provided the ESR is less than 10
. Solid tantalum electrolytic, aluminum electrolytic, and multilayer
ceramic capacitors are all suitable, provided they meet the requirements described above. Most of the
commercially available 4.7
μ
F surface-mount solid tantalum capacitors, including devices from Sprague,
Kemet, and Nichico, meet the ESR requirements stated above. Multilayer ceramic capacitors should have
minimum values of 1
μ
F over the full operating temperature range of the equipment.
CAPACITOR SELECTION
VALUE
KEMET
SPRAGUE
SPRAGUE
AVX
PART NO.
MFR.
MAX ESR
1.5
1.5
1.3
0.6
SIZE (H
×
L
×
W)
1.9
×
3.5
×
2.8
1.3
×
7.0
×
2.7
2.5
×
7.6
×
2.5
2.6
×
6.0
×
3.2
T494B475K016AS
195D106x0016x2T
695D106x003562T
TPSC475K035R0600
Size is in mm. ESR is maximum resistance in ohms at 100 kHz and TA = 25
°
C. Listings are sorted by height.
4.7
μ
F
10
μ
F
10
μ
F
4.7
μ
F
output voltage programming
The output voltage of the TPS76301 adjustable regulator is programmed using an external resistor divider as
shown in Figure 21. The output voltage is calculated using:
VO
0.995
Vref
1
R1
R2
(1)
Where
V
ref
= 1.192 V typ (the internal reference voltage)
0.995 is a constant used to center the load regulator (1%)
Resistors R1 and R2 should be chosen for approximately 7-
μ
A divider current. Lower value resistors can be
used but offer no inherent advantage and waste more power. Higher values should be avoided as leakage
currents at FB increase the output voltage error. The recommended design procedure is to choose
R2 = 169 k
to set the divider current at 7
μ
A and then calculate R1 using:
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| TPS76XXXEVM-125 | 功能描述:電源管理IC開發(fā)工具 Universal LDO Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS77001DBVR | 功能描述:低壓差穩(wěn)壓器 - LDO Adj 50mA 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 |
| TPS77001DBVRG4 | 功能描述:低壓差穩(wěn)壓器 - LDO Ultra Low-Power 50-mA 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 |
| TPS77001DBVT | 功能描述:低壓差穩(wěn)壓器 - LDO Adj 50mA 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 |
| TPS77001DBVTG4 | 功能描述:低壓差穩(wěn)壓器 - LDO Ultra Low-Power 50-mA 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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