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參數(shù)資料
| 型號： | AMS2954ACD-X |
| 廠商： | Advanced Monolithic Systems, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 250mA LOW DROPOUT VOLTAGE REGULATOR |
| 中文描述： | 250mA的低壓差穩(wěn)壓器 |
| 文件頁數(shù)： | 3/15頁 |
| 文件大?。?/td> | 169K |
| 代理商： | AMS2954ACD-X |
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS2954
ELECTRICAL CHARACTERISTICS
(Note 2) (Continued)
PARAMETER
CONDITIONS
(Note 2)
IL = 100
μ
A
IL = 250 mA
IL = 100
μ
A
IL = 250 mA
AMS2954AC
Min. Typ. Max.
AMS2954C
Min. Typ. Max.
Units
Dropout Voltage
(Note 5)
50
380
80
600
50
380
80
600
mV
mV
Ground Current
75
15
120
20
75
15
120
20
μ
A
mA
Current Limit
Vout = 0
200
500
200
500
mA
Thermal Regulation
(Note 13)
CL = 1
μ
F
CL = 200
μ
F
CL = 13.3
μ
F
(Bypass = 0.01
μ
F pins 7 to 1)
0.05
0.2
0.05
0.2
%/W
Output Noise,
10Hz to 100KHz
430
160
100
430
160
100
μ
V rms
μ
V rms
μ
V rms
8-Pin Versions only
AMS2954AC
AMS2954C
Reference Voltage
Reference Voltage
1.22
1.19
1.235
1.25
1.27
1.21
1.185
1.235
1.26
1.285
V
V
Over Temperature (Note 7)
Feedback Pin Bias Current
40
60
40
60
nA
Reference Voltage Temperature
Coefficient
( Note 12 )
20
50
ppm/°C
Feedback Pin Bias Current
Temperature Coefficient
Error Comparator
0.1
0.1
nA/°C
Output Leakage Current
V
OH
= 30V
0.01
1
0.01
1
μ
A
Output Low Voltage
Vin = 4.5V
IOL = 400
μ
A
(Note 6)
(Note 6)
(Note 6)
150
250
150
250
mV
Upper Threshold Voltage
Lower Threshold Voltage
40
60
75
15
40
60
75
15
mV
mV
mV
95
95
Hysteresis
Shutdown Input
Input logic Voltage
Low (Regulator ON)
High (Regulator OFF)
2
1.3
0.7
2
1.3
0.7
V
V
μ
A
μ
A
Shutdown Pin Input Current
(Note 3)
Vs = 2.4V
Vs = 30V
30
450
50
600
30
450
50
600
Regulator Output Current in
Shutdown (Note 3)
(Note 11)
3
10
3
10
μ
A
Note 1:
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the
device is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the
Electrical Characteristics tables.
Note 2:
Unless otherwise specified all limits guaranteed for V
IN
= (
V
ONOM
+1)V, I
L
= 100
μ
A and C
L
= 1
μ
F for 5V versions and 2.2
μ
F for 3V and 3.3V
versions. Limits appearing in
boldface
type apply over the entire junction temperature range for operation. Limits appearing in normal type apply for T
A
= T
J
=
25
°
C Additional conditions for the 8-pin versions are FEEDBACK tied to V
TAP
, OUTPUT tied to SENSE and V
SHUTDOWN
≤
0.8V.
Note 3:
Guaranteed and 100% production tested.
Note 4:
Guaranteed but not 100% production tested. These limits are not used to calculate outgoing AQL levels.
Note 5:
Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below its nominal value measured at 1V
differential. At very low values of programmed output voltage, the minimum input supply voltage of 2V ( 2.3V over temperature) must be taken into account.
Note 6:
Comparator thresholds are expressed in terms of a voltage differential at the feedback terminal below the nominal reference voltage measured at
V
IN
= (
V
ONOM
+1)V. To express these thresholds in terms of output voltage change, multiply by the error amplifier gain = Vout/Vref = (R1 + R2)/R2. For
example, at a programmed output voltage of 5V, the error output is guaranteed to go low when the output drops by 95 mV x 5V/1.235 = 384 mV. Thresholds
remain constant as a percent of V
out
as V
out
is varied, with the dropout warning occurring at typically 5% below nominal, 7.5% guaranteed.
Note 7:
V
ref
≤
V
out
≤
(V
in
- 1V), 2.3
≤
V
in
≤
30V, 100
μ
A
≤
I
L
≤
250 mA, T
J
≤
T
JMAX
.
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| AMS2954ACM-25 | 制造商:ADMOS 制造商全稱:ADMOS 功能描述:250mA LOW DROPOUT VOLTAGE REGULATOR |
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| AMS2954ACM-50 | 制造商:ADMOS 制造商全稱:ADMOS 功能描述:250mA LOW DROPOUT VOLTAGE REGULATOR |
| AMS2954ACM-X | 制造商:ADMOS 制造商全稱:ADMOS 功能描述:250mA LOW DROPOUT VOLTAGE REGULATOR |
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