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參數(shù)資料
| 型號： | LM2767M5 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Switched Capacitor Voltage Converter |
| 中文描述： | 0.03 A SWITCHED CAPACITOR CONVERTER, 25 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數(shù)： | 3/9頁 |
| 文件大?。?/td> | 194K |
| 代理商： | LM2767M5 |
Absolute Maximum Ratings
(Note 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (V+ to GND, or V+ to V
OUT
)
V
OUT
Continuous Output Current
Output Short-Circuit Duration to GND (Note 3)
Continuous Power
Dissipation (T
A
= 25C)(Note 4)
T
JMax
(Note 4)
5.8V
30 mA
1 sec.
400 mW
150C
Operating Ratings
θ
JA
(Note 4)
Junction Temperature Range
Ambient Temperature Range
Storage Temperature Range
Lead Temp. (Soldering, 10 sec.)
ESD Rating (Note 5)
Human Body Model
Machine Model
210C/W
40C to 100C
40C to 85C
65C to 150C
240C
2kV
200V
Electrical Characteristics
Limits in standard typeface are for T
J
= 25C, and limits in
boldface
type apply over the full operating temperature range. Un-
less otherwise specified: V+ = 5V, C
1
= C
2
= 10 μF. (Note 6)
Symbol
Parameter
Condition
V+
Supply Voltage
I
Q
Supply Current
No Load
I
L
Output Current
1.8V
≤
V+
≤
5.5V
R
OUT
Output Resistance (Note 7)
I
L
= 15 mA
f
OSC
Oscillator Frequency
(Note 8)
f
SW
Switching Frequency
(Note 8)
P
EFF
Power Efficiency
R
L
(5.0k) between GND and
OUT
I
L
= 15 mA to GND
V
OEFF
Voltage Conversion Efficiency
No Load
Note 2:
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 3:
V
OUT
may be shorted to GND for one second without damage. For temperatures above 85C, V
OUT
must not be shorted to GND or device may be damaged.
Note 4:
The maximum allowable power dissipation is calculated by using P
= (T
T
)/
θ
, 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.
Note 5:
The human body model is a 100pF capacitor discharged through a 1.5k
resistor into each pin. The machine model is a 200pF capacitor discharged directly
into each pin.
Note 6:
In the test circuit, capacitors C
1
and C
2
are 10 μF, 0.3
maximum ESR capacitors. Capacitors with higher ESR will increase output resistance, reduce output
voltage and efficiency.
Note 7:
Specified output resistance includes internal switch resistance and capacitor ESR. See the details in the application information for positive voltage doubler.
Note 8:
The output switches operate at one half of the oscillator frequency, f
OSC
= 2f
SW
.
Min
1.8
Typ
Max
5.5
90
Units
V
μA
mA
kHz
kHz
40
15
20
22
11
40
50
25
8
4
98
%
96
99.96
%
L
www.national.com
3
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