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參數(shù)資料
| 型號： | LQA48B |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Cellular Phone Power Management Unit |
| 中文描述： | 蜂窩電話電源管理單元 |
| 文件頁數(shù)： | 7/32頁 |
| 文件大?。?/td> | 761K |
| 代理商： | LQA48B |
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V
O2
LDO Electrical Characteristics
Unless otherwise noted, V
IN
= V
BATT
= 3.6V. Typical values and limits appearing in normal type apply for T
J
= 25C. Limits ap-
pearing in
boldface
type apply over the entire junction temperature range for operation, 40 to +125C. (Notes 2, 8, 9)
Symbol
V
OUT
Accuracy
V
OUT
Range
I
OUT
Parameter
Condition
Min
Typ
Max
Units
Output Voltage
1 mA
≤
I
OUT
≤
200 mA, V
OUT
= 2.2V
3.0V
≤
V
BATT
= V
IN
≤
5.5V
0 μA
≤
I
OUT
≤
200 mA
Programming Resolution = 100 mV
(V
OUT
+ 0.25V, 3.0V)
MAX
≤
V
BATT
V
BATT
= V
IN
≤
5.5V
V
OUT
= 0V
I
OUT
= 75 mA
(V
OUT
+ 0.25V, 3.0V)
MAX
≤
V
BATT
V
BATT
= V
IN
≤
5.5V, I
OUT
= 75 mA
V
IN
= 3.6V, 1 mA
≤
I
OUT
≤
150 mA
10 Hz
≤
f
≤
100 kHz,
C
OUT
= 2.2 μF
f = 217 Hz, C
OUT
= 2.2 μF
3
±
1.0
+3
%
Programmable Output Voltage
Range
Output Current
1.5
2.8
3.0
V
150
mA
Output Current Limit
Dropout Voltage
Line Regulation
540
30
V
IN
–V
OUT
V
OUT
174
mV
3
mV
Load Regulation
Output Noise Voltage
12
41
e
N
27
μV
RMS
PSRR
Power Supply Ripple
Rejection Ratio
Ground Current
Output Capacitance
Output Capacitor ESR
57
dB
I
GND
C
OUT
I
OUT
= 100 μA
0 mA
≤
I
OUT
≤
150 mA
30
μA
μF
m
2
5
20
500
t
START-UP
Start-Up Time from Shutdown
C
OUT
= 2.2 μF, I
OUT
= 150 mA (Note
10)
60
μs
V
O3
LDO Electrical Characteristics
Unless otherwise noted, V
= V
= 3.6V. Typical values and limits appearing in normal type apply for T
= 25C. Limits ap-
pearing in
boldface
type apply over the entire junction temperature range for operation, 40 to +125C. (Notes 2, 8, 9)
Symbol
V
OUT
Accuracy
V
OUT
Range
I
OUT
Parameter
Condition
Min
Typ
Max
Units
Output Voltage
1 mA
≤
I
OUT
≤
150 mA, V
OUT
= 2.7V
3.0V
≤
V
BATT
= V
IN
≤
5.5V
0 μA
≤
I
OUT
≤
150 mA
Programming Resolution = 100 mV
(V
OUT
+ 0.25V, 3.0V)
MAX
≤
V
BATT
V
BATT
= V
IN
≤
5.5V
V
OUT
= 0V
I
OUT
= 75 mA
(V
OUT
+ 0.25V, 3.0V)
MAX
≤
V
BATT
V
BATT
= V
IN
≤
5.5V, I
OUT
= 75 mA
V
IN
= 3.6V, 1 mA
≤
I
OUT
≤
150 mA
10 Hz
≤
f
≤
100 kHz,
C
OUT
= 2.2 μF
f = 217 Hz, C
OUT
= 2.2 μF
3
±
1.0
+3
%
Programmable Output Voltage
Range
Output Current
2.5
3.0
3.2
V
150
mA
Output Current Limit
Dropout Voltage
Line Regulation
520
30
V
IN
–V
OUT
V
OUT
156
mV
3
mV
Load Regulation
Output Noise Voltage
12
41
e
N
27
μV
RMS
PSRR
Power Supply Ripple
Rejection Ratio
Ground Current
Output Capacitance
Output Capacitor ESR
56
dB
I
GND
C
OUT
I
OUT
= 500 μA
0 mA
≤
I
OUT
≤
150 mA
30
μA
μF
m
2
5
20
500
t
START-UP
Start-Up Time from Shutdown
C
OUT
= 2.2 μF, I
OUT
= 150 mA (Note
10)
60
μs
Note:
This LDO will be ON after start-up by default. It can be disabled via the register file.
L
www.national.com
7
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