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參數(shù)資料
| 型號： | LP2956AMJ-QML |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Dual Micropower Low-Dropout Voltage Regulators |
| 中文描述： | DUAL OUTPUT, FIXED/ADJUSTABLE POSITIVE LDO REGULATOR, CDIP16 |
| 封裝： | CERAMIC, DIP-16 |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 501K |
| 代理商： | LP2956AMJ-QML |
Electrical Characteristics
(Continued)
Limits in standard typeface are for T
= 25C, and limits in
boldface type
apply over the full operating temperature range. Lim-
its are guaranteed by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods.
Unless otherwise specified: V
= 6V, C
= 2.2 μF (Main Output) and 10 μF (Auxiliary Output), Feedback pin is tied to 5V Tap
pin, C
= 1 μF, V
= 0V, Main Output pin is tied to Output Sense pin, Auxiliary Output is programmed for 5V. The main
regulator output has a 1 mA load, the auxiliary regulator output has a 100 μA load.
Symbol
Parameter
Conditions
Typical
LP2956AI
Min
LP2956I
Min
Units
Max
Max
AUXILIARY COMPARATOR
HYST
Hysteresis
I
OH
Output “HIGH” Leakage
6
mV
μA
V
OH
= 30V
V
IN
(COMP) = 1.3V
V
IN
(COMP) = 1.1V
I
O
(COMP) = 400 μA
0
≤
V
IN
(COMP)
≤
5V
0.01
1
2
1
2
V
OL
Output “LOW” Voltage
150
250
400
30
50
250
400
30
50
mV
I
B
Input Bias Current
10
30
50
30
50
nA
GROUND PIN CURRENT
I
GND
Ground Pin Current
(Note 15)
I
L
(Main Out) = 1 mA
I
L
(Aux. Out) = 0.1 mA
I
L
(Main Out) = 50 mA
I
L
(Aux. Out) = 1 mA
I
L
(Main Out) = 100 mA
I
L
(Aux. Out) = 1 mA
I
L
(Main Out) = 250 mA
I
L
(Aux. Out) = 1 mA
I
L
(Main Out) = 1 mA
I
L
(Aux. Out) = 50 mA
I
L
(Main Out) = 1 mA
I
L
(Aux. Out) = 75 mA
V
IN
= 4.5V
I
L
(Main Out) = 0.1 mA
I
L
(Aux. Out) = 0.1 mA
No Load on Either Output
I
(SD IN
)
≥
1 μA
170
250
280
2
2.5
6
8
28
33
6
8
8
10
325
350
250
280
2
2.5
6
8
28
33
6
8
8
10
325
350
μA
1.1
3
16
mA
3
6
I
GND
Ground Pin Current
at Dropout (Note 15)
270
μA
I
GND
Ground Pin Current
at Shutdown (Note 15)
120
180
200
180
200
Note 1:
Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the de-
vice outside of its rated operating conditions.
Note 2:
The maximum allowable power dissipation is a function of the maximum junction temperature, T
(max), the junction-to-ambient thermal resistance,
θ
J-A
,
and the ambient temperature, T
A
. The maximum allowable power dissipation at any ambient temperature is calculated using: P(max) =
.
Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. See Application Hints for
additional information on heat sinking and thermal resistance.
Note 3:
When used in dual-supply systems where the regulator load is returned to a negative supply, the output voltage must be diode-clamped to ground.
Note 4:
May exceed the input supply voltage.
Note 5:
Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
Note 6:
Load regulation is measured at constant junction temperature using low duty cycle pulse testing. Two separate tests are performed, one for the range of 100
μA to 1 mA and one for the 1 mA to 250 mA range. Changes in output voltage due to heating effects are covered by the thermal regulation specification.
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. At
very low values of programmed output voltage, the input voltage minimum of 2V (2.3V over temperature) must be observed.
Note 8:
Thermal regulation is the change in output voltage at a time T after a change in power dissipation, excluding load or line regulation effects. Specifications
are for a 200 mA load pulse at V
= 20V (3W pulse) for T = 10 ms on the Main regulator output. For the Auxiliary regulator output, specifications are for a 66 mA
load pulse at V
IN
= 20V (1W pulse) for T = 10 ms.
Note 9:
Connect a 0.1 μF capacitor from the output to the feedback pin.
Note 10:
Load regulation is measured at constant junction temperature using low duty cycle pulse testing. Two separate tests are performed, one for the range of
100 μA to 1 mA and one for the 1 mA to 75 mA range. Changes in output voltage due to heating effects are covered by the thermal regulation specification.
Note 11:
Dropout dectection comparator thresholds are expressed as changes in a 5V output. To express the threshold voltages in terms of a differential at the
Feedback terminal, divide by the error amplifier gain = V
OUT
/V
REF
.
www.national.com
5
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP2956AIM | Dual Micropower Low-Dropout Voltage Regulators |
| LP2956AIN | Dual Micropower Low-Dropout Voltage Regulators |
| LP2956IM | Dual Micropower Low-Dropout Voltage Regulators |
| LP2956IN | Dual Micropower Low-Dropout Voltage Regulators |
| LP2956A | |
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| LP2956IM/NOPB | 功能描述:IC REG LDO ADJ .25A 16-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.28V @ 150mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:150mA 電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:5-VFBGA 供應(yīng)商設(shè)備封裝:5-uSMD 包裝:Digi-Reel® 其它名稱:LP2985AIBP-4.0DKR |
| LP2956IMX | 功能描述:IC REG LDO ADJ .25A 16-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.28V @ 150mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:150mA 電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:5-VFBGA 供應(yīng)商設(shè)備封裝:5-uSMD 包裝:Digi-Reel® 其它名稱:LP2985AIBP-4.0DKR |
| LP2956IN | 功能描述:IC REG LDO ADJ .25A 16-DIP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.28V @ 150mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:150mA 電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:5-VFBGA 供應(yīng)商設(shè)備封裝:5-uSMD 包裝:Digi-Reel® 其它名稱:LP2985AIBP-4.0DKR |
| LP2956IN/NOPB | 制造商:Texas Instruments 功能描述:LDO Regulator Pos 1.23V to 29V 0.25A/0.075A 16-Pin PDIP Rail |
| LP2957A-12 WAF | 制造商:Texas Instruments 功能描述: |
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