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參數(shù)資料
| 型號： | ML4854IT |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Adjustable, Low-Current, 2-Cell Boost Regulator with Shutdown and Low Battery Detect |
| 中文描述： | 0.5 A SWITCHING REGULATOR, 650 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | TSSOP-8 |
| 文件頁數(shù)： | 3/13頁 |
| 文件大?。?/td> | 133K |
| 代理商： | ML4854IT |
ML4854
PRODUCT SPECIFICATION
REV. 1.0.7 5/6/03
3
Recommended Operating Conditions
Electrical Characteristics
Unless otherwise speci
fi
ed, V
at T
A
= +25
°
C
IN
=1.6V to 3V, I
LOAD
=1mA, T
A
=-40
°
C to +85
°
C. Test Circuit Fig.1. Typical values are
Parameter
Temperature Range
V
IN
Operating Range
V
OUT
Operating Range
Min.
-40
1.6
3.0
Max.
+85
0.9 V
5.0
Units
°
C
V
V
OUT
Parameter
Start Up Voltage
Operating Voltage
Output Voltage
Conditions
Min.
Typ.
1.25
Max.
1.5
Units
V
V
V
V
V
mA
mA
μ
μ
μ
μ
μ
%
%
%
%
V
V
mV
m
%
μ
A
μ
A
V
V
V
I
After start I
V
OUT
(nom.)=3.3V
V
OUT
(nom.)=5V
LOAD
<1mA
LOAD
=10mA, V
OUT
=3.3V/5V
0.8
3.15
4.775
3
3.3
5
3.45
5.225
5
Output Voltage Adjust Range
Steady State Output Current
(see diagram)
V
V
V
V
V
V
OUT
=3.3V, V
=5V, V
= 3V
= 2.4V
= 1.8V
= 1.5V
IN
=2.5V
=2.5V
500
330
1.32
1.64
2.15
2.57
0.5
0.5
0.5
1.0
1.0
1.230
0.390
25
275
95
26
85
0.2
1.6
0.8
OUT
IN
Pulse Width
IN
0.8
1.2
1.8
2.2
1.9
2.3
3.1
4.0
s
s
s
s
s
IN
IN
IN
Minimum Off-Time
Line Regulation
V
V
0 to 250mA V
0 to 150mA V
IN
=1.6V to 3V, I
=5V
OUT
=2mA, V
OUT
=3.3V
OUT
Load Regulation
IN
=2.4V ,V
=2.4V ,V
OUT
=3.3V
=5V
IN
OUT
Feedback Voltage (VFB)
LBI Threshold Voltage
LBI Hysteresys
Internal NFET, PFET ON Resist.
Efficiency
Quiescent Current
–
SHDN
I
(I
SHDN=0V, R1 excluded,V
SHDN=3V, R1 excluded,V
V
LBI
= 0, I
SINK
V
OUT
=3.3V/5V
V
OUT
=3.3V/5V
LOAD
= 100mA
=200mA) V
LOAD
IN
=3V, V
OUT
=3V
=3V
= 3.3V
IN
100
200
IN
LBO Output Voltage
SHDN Input Voltage @V
SHDN Input Voltage @V
=1mA
IN
=3V
=1.6V
IN
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