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参数资料
| 型号： | LP2981IM5X-2.8 |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | Micropower 100 mA Ultra Low-Dropout Regulator |
| 中文描述： | 2.8 V FIXED POSITIVE LDO REGULATOR, 0.375 V DROPOUT, PDSO5 |
| 封装： | SOT-23, SOP-5 |
| 文件页数： | 9/20页 |
| 文件大小： | 346K |
| 代理商： | LP2981IM5X-2.8 |
SLVS521B JULY 2004 REVISED OCTOBER 2004
9
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
basic application circuit (continued)
3.3
μ
F
1
μ
F
VIN
1
ON/OFF
2
GND
3
5
4
ADJ
LP2981-xxDBVR (Adjustable Version)
VOUT = VREF1
R
ADJ
R
1
RADJ
R1 39.5 k
Minimum Cout value for stability (can be increased without limit for improved stability and transient response)
See Application Information
Figure 3
absolute maximum ratings over the virtual junction temperature range (unless otherwise noted)
Continuous input voltage range, V
IN
ON/OFF input voltage range, V
ON/OFF
Output voltage range (see Note 1)
Input/output voltage differential range, V
IN
-V
OUT
(see Note 2)
Output current, I
OUT
(see Note 3)
Package thermal impedance,
θ
JA
(see Notes 3 and 4): DBV package
0.3 V to 16 V
0.3 V to 16 V
0.3 V to 9 V
0.3 V to 16 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Internally limited (short-circuit protected)
. . . . . . . . . . . . . . . . . . . . . . . .
YEQ/YZQ package
. . . . . . . . . . . . . . . . . .
YEU/YZU package
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
206
°
C/W
TBD
°
C/W
TBD
°
C/W
150
°
C
Operating virtual junction temperature, T
J
Storage temperature range, T
stg
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES:
1. If load is returned to a negative power supply, the output must be diode clamped to GND.
2. The PNP pass transistor has a parasitic diode connected between the input and output. This diode normally is reverse biased
(VIN
>
VOUT), but will be forward biased if the output voltage exceeds the input voltage by a diode drop (see Application Information
for more details).
3. Maximum power dissipation is a function of TJ(max), JA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) TA)/JA. Operating at the absolute maximum TJ of 150
°
C can affect reliability.
4. The package thermal impedance is calculated in accordance with JESD 51-7.
65
°
C to 150
°
C
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| LP2981IM5X-3.0 | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| LP2981IM5X-3.0/NOPB | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| LP2981IM5X-3.2/NOPB | 功能描述:IC REG LDO 3.2V .1A SOT23-5 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 稳压器拓扑结构:正，固定式 输出电压:3.1V 输入电压:最高 5.5V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:300mA 电流 - 限制（最小）:420mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 供应商设备封装:TSOT-23-5 包装:带卷 (TR) |
| LP2981IM5X-3.3 | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| LP2981IM5X-3.3/NOPB | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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