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参数资料
| 型号： | LA7995M |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 65 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封装： | 0.225 INCH, MFP-14 |
| 文件页数： | 1/5页 |
| 文件大小： | 100K |
| 代理商： | LA7995M |
N1506 MS PC B8-3716 No.5920-1/5
Any and all SANYO Semiconductor products described or contained herein do not have specifications
that can handle applications that require extremely high levels of reliability, such as life-support systems,
aircraft's control systems, or other applications whose failure can be reasonably expected to result in
serious physical and/or material damage. Consult with your SANYO Semiconductor representative
nearest you before using any SANYO Semiconductor products described or contained herein in such
applications.
SANYO Semiconductor assumes no responsibility for equipment failures that result from using products
at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor
products described or contained herein.
LA7995M
Overview
The LA7995M is a DC-DC converter IC that produces a 30V level from a 5V VCC power supply. It is intended for
applications such as the tuner power supply on video boards for personal computers.
Previously, almost all DC-DC converters adopted a technique in which the back electromotive force from a coil was used
as the step-up method. However, that method had the problem that it was subject to high-frequency noise due to the sharp
pulses used. In contrast, this device adopts the charge pump method. In addition to reducing noise significantly, this
method only requires capacitors as external components, thus reducing external component costs.
Specifications
Maximum Ratings at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VCC max
7V
Allowable power dissipation
Pd max
Ta
≤ 65°C *
380
mW
Operating temperature
Topr
-10 to +65
°C
Storage temperature
Tstg
-55 to +150
°C
Note * : When mounted on a 144.3×76.1×1.6mm3 paper-phenol printed circuit board.
Operating Conditions at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
VCC
5V
Operating supply voltage range
VCC op
4.75 to 5.25
V
Electrical Characteristics at Ta
= 25°C
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
Current drain
IIN
IO = 1mA, VCC = 5V
19
24
29
mA
Output voltage
VOUT
IO = 1mA, VCC = 5V
29
30.7
32
V
Output voltage fluctuations
ΔVOUT
IO = 1mA, VIN = 4.75 to 5.25V
1.0
1.5
V
Output current
IOUT
VO = 29V
1.5
1.7
mA
Oscillator frequency
f
COSC = 150pF
35
50
65
kHz
Note : The above characteristics measured using 0.33
μF chip capacitors for capacitors C1, C2, and C3.
Monolithic Linear IC
Charge Pump Based DC-DC
Converter
Ordering number : EN5920A
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