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參數(shù)資料
| 型號： | LP2967 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Dual Micropower 150 mA Low-Dropout Regulator in micro SMD Package |
| 中文描述： | DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PBGA8 |
| 封裝： | MICRO, BUMP, SMD-8 |
| 文件頁數(shù)： | 6/17頁 |
| 文件大?。?/td> | 612K |
| 代理商： | LP2967 |
Electrical Characteristics
(Continued)
Limits in standard typeface are for T
j
= 25C, and limits in
boldface type
apply over the full operating junction temperature
range. Unless otherwise specified, V
IN
= V
O(NOM)
+ 1V, I
L
= 1mA, C
IN
= 1μF,C
OUT
= 4.7μF, V
ON/OFF
= 1.6V.
Symbol
Parameter
Conditions
C
BYPASS
= 100nF, V
IN
=
V
O(NOM)
+ 1V + 100mV p-p
square wave (trise and tfall =
100ns)
F = 120Hz
F = 800Hz
F = 1000Hz
F = 1600Hz
F = 10kHz
F = 100kHz
F = 1MHz
I
LOAD
1 = 150 mA at 1kHz rate
(15 mA/μs rise and fall slope)
I
LOAD
2 = 1mA
V
OUT
2/
V
OUT
1
I
LOAD
2 = 150 mA at 1KHz rate
(15 mA/μs rise and fall slope)
I
LOAD
1 = 1mA
V
OUT
2/
V
OUT
1
Min
Typ
Max
Units
RR
Ripple Rejection
52
54
56
58
50
47
70
dB
Xtalk
Crosstalk
Rejection
dB
100
100
Note 1:
Absolute maximum ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device
beyond its rated operating conditions.
Note 2:
Rating is for the human body mode, a 100pF capacitor discharged through a 1.5k
resistor into each pin.
Note 3:
The maximum allowable power dissipation is calculated by using P
DMAX
= (T
JMAX
- T
A
/
θ
JA
, where T
JMAX
is the maximum junction temperature, T
A
is the
ambient temperature, and
θ
JA
is the junction-to-ambient thermal resistance of the specified package. Therefore, the maximum power dissipation must be derated
at elevated temperatures and is limited by T
JMAX
,
θ
JA
and
A
.
Note 4:
If used in a dual-supply system where the regulator load is returned to a negative supply, the LP2967 output must be diode-clamped to ground.
Note 5:
The output PNP structure contains a diode between the V
IN
and V
OUT
terminals that is normally reverse-biased. Reversing the polarity from V
IN
and V
OUT
will turn on this diode.
Note 6:
Load regulation excursion over temperature is included in Output Voltage Tolerance.
Note 7:
The dropout voltage of a regulator is defined as the minimum input-to-output differential required to stay within 100mV of the output voltage measured with
a 1V differential.
L
www.national.com
6
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