參數(shù)資料
型號(hào)： LM2798MM-2.0
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： 120mA High Efficiency Step-Down Switched Capacitor Voltage Converter with Voltage Monitoring
中文描述： 0.12 A SWITCHED CAPACITOR REGULATOR, 500 kHz SWITCHING FREQ-MAX, PDSO10
封裝： MSOP-10
文件頁數(shù)： 3/14頁
文件大小： 388K
代理商： LM2798MM-2.0
Absolute Maximum Ratings
2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Notes 1,
V
IN
, EN, POK, BATOK pins: Voltage
to Ground (Note 3)
Junction Temperature (T
J-MAX-ABS
)
Continuous Power Dissipation
(Note 4)
V
OUT
Short-Circuit to GND Duration
(Note 4)
Storage Temperature Range
Lead Temperature
(Soldering, 5 Sec.)
ESD Rating (Note 5)
Human-body model:
Machine model
0.3V to 5.6V
150C
Internally Limited
Unlimited
65C to 150C
260C
2 kV
200V
Operating Ratings
(Notes 1, 2)
Input Voltage Range
Recommended Output Current
Range
Junction Temperature Range
Ambient Temperature Range
(Note 6)
2.6V to 5.5V
0mA to 120mA
-40C to 125C
-40C to 85C
Thermal Information
Thermal Resistance, MSOP-8
Resistance, MSOP-8 Package
(
θ
JA
) (Note 7)
220C/W
Electrical Characteristics
Limits in standard typeface and typical values apply for T
J
= 25
o
C. Limits in
boldface
type apply over the operating junction
temperature range. Unless otherwise specified: 2.6
≤
V
IN
≤
5.5V, V(EN) = V
IN
, C
1
= C
2
= 1μF, C
IN
= C
OUT
= 10μF. (Note 9)
Symbol
Parameter
Conditions
LM2797-1.8, LM2798-1.8, LM2798-2.0
2.8V
≤
V
IN
≤
4.2V
0mA
≤
I
OUT
≤
120mA
4.2V
<
V
IN
≤
5.5V
0mA
≤
I
OUT
≤
120mA
LM2798-1.5
2.8V
≤
V
IN
≤
4.2V
0mA
≤
I
OUT
≤
120mA
4.2V
<
V
IN
≤
5.5V
0mA
≤
I
OUT
≤
120mA
All Output Voltage Options
I
Q
Operating Supply Current
I
OUT
= 0mA
I
SD
Shutdown Supply Current
V(EN) = 0V
V
R
Output Voltage Ripple
LM2798-1.8: V
IN
= 3.6V, I
OUT
= 120mA
E
PEAK
Peak Efficiency
LM2798-1.8: V
IN
= 3.0V, I
OUT
= 60mA
Average Efficiency over
Li-Ion Input Voltage Range
(Note 11)
LM2798-2.0: 3.0
≤
V
IN
≤
4.2V, I
OUT
= 60mA
t
ON
Turn-On Time
LM2798, V
IN
=2.6V, I
OUT
=100mA, (Note 12)
LM2797, V
IN
=2.6V, I
OUT
=100mA, (Note 12)
f
SW
Switching Frequency
I
SC
Short-Circuit Current
V
IN
= 3.6, V
OUT
= 0V
Enable Pin (EN) Characteristics
V
IH
EN pin Logic-High Input
V
IL
EN pin Logic-Low Input
V
EN
= 0V
V
EN
= 5.5V
(Notes 2, 8)
Min
Typ
Max
Units
V
OUT
Output Voltage Tolerance
-5
+5
% of
V
OUT(nom)
(Note 10)
-6
+6
V
OUT
Output Voltage Tolerance
-6
+6
% of
V
OUT(nom)
(Note 10)
-6
+6
35
0.1
20
90
76
82
75
400
100
500
25
50
2
μA
μA
mV
p-p
%
%
E
AVG
LM2798-1.5: 3.0
≤
V
IN
≤
4.2V, I
OUT
= 60mA
LM2798-1.8: 3.0
≤
V
IN
≤
4.2V, I
OUT
= 60mA
μs
kHz
mA
0.9
0
V
IN
0.4
V
V
nA
I
EN
EN pin input current
0
30
L
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