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参数资料
| 型号： | LP2985IM5X-3.2/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 固定正电压单路输出LDO稳压器 |
| 英文描述： | 3.2 V FIXED POSITIVE LDO REGULATOR, 0.575 V DROPOUT, PDSO5 |
| 封装： | SOT-23, 5 PIN |
| 文件页数： | 21/22页 |
| 文件大小： | 593K |
| 代理商： | LP2985IM5X-3.2/NOPB |
Symbol
Parameter
Conditions
Typ
LP2985AI-X.X
LP2985I-X.X
Units
(Note 6)
Min
Max
Min
Max
e
n
Output Noise
BW = 300 Hz to 50 kHz,
Voltage (RMS)
C
OUT = 10 F
30
V
C
BYPASS = 10 nF
Ripple Rejection
f = 1 kHz, C
BYPASS = 10 nF
45
dB
C
OUT = 10 F
I
O(SC)
Short Circuit Current
R
L = 0 (Steady State)
400
mA
(Note 9)
I
O(PK)
Peak Output Current
V
OUT ≥ Vo(NOM) 5%
350
mA
Note 1:
“Absolute Maximum Ratings” indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating
the device outside of its rated operating conditions.
Note 2:
The ESD rating of pins 3 and 4 for the SOT-23 package, or pins 5 and 2 for the micro SMD package, is 1 kV.
Note 3:
The maximum allowable power dissipation is a function of the maximum junction temperature, T
J(MAX), the junction-to-ambient thermal resistance, θJ-
A, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperture is calculated using:
Where the value of
θ
J-A for the SOT-23 package is 220°C/W in a typical PC board mounting and the micro SMD package is 225°C/W. Exceeding the maximum
allowable dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown.
Note 4:
For 12V option, output voltage survival: -0.3 to +16V. If used in a dual-supply system where the regulator load is returned to a negative supply, the LP2985
output must be diode-clamped to ground.
Note 5:
The output PNP structure contains a diode between the V
IN to VOUT terminals that is normally reverse-biased. Reversing the polarity from VIN to VOUT
will turn on this diode.
Note 6:
Limits are 100% production tested at 25°C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality
Control (SQC) methods. The limits are used to calculate National's Average Outgoing Quality Level (AOQL).
Note 7:
Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below the value measured with a 1V differential.
Note 8:
The ON/OFF input must be properly driven to prevent possible misoperation. For details, refer to Application Hints.
Note 9:
The LP2985 has foldback current limiting which allows a high peak current when V
OUT > 0.5V, and then reduces the maximum output current as VOUT is
forced to ground (see Typical Performance Characteristics curves).
Note 10:
Exposing the micro SMD device to direct sunlight will cause misoperation. See Application Hints for additional information.
Note 11:
For 12V option, add 50 A to all ON state quiescent current values.
www.national.com
8
LP2985
相关PDF资料 |
PDF描述 |
|---|---|
| LP2985IM5X-3.5/NOPB | 3.5 V FIXED POSITIVE LDO REGULATOR, 0.575 V DROPOUT, PDSO5 |
| LP2985IM5X-4.7/NOPB | 4.7 V FIXED POSITIVE LDO REGULATOR, 0.575 V DROPOUT, PDSO5 |
| LP2985IM5X-4.8/NOPB | 4.8 V FIXED POSITIVE LDO REGULATOR, 0.575 V DROPOUT, PDSO5 |
| LP2985IM5X-5.3/NOPB | 5.3 V FIXED POSITIVE LDO REGULATOR, 0.575 V DROPOUT, PDSO5 |
| LP3883ET-1.2/NOPB | 1.216 V FIXED POSITIVE LDO REGULATOR, 0.42 V DROPOUT, PZFM5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LP2985IM5X33NOPB | 制造商:Texas Instruments 功能描述: |
| LP2985IM5X-4.0 | 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 |
| LP2985IM5X-4.0 NOPB | 制造商:National Semiconductor 功能描述:LDO Regulator Pos 4V 0.15A 5-Pin SOT-23 T/R |
| LP2985IM5X-4.0/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 |
| LP2985IM5X-4.5 | 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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