L78MS05 [SANYO]
5V Constant-Voltage Power Supply with Strobe Line;
| 型号： | L78MS05 |
| 厂家： | 
SANYO SEMICON DEVICE |
| 描述： | 5V Constant-Voltage Power Supply with Strobe Line |
| 文件： | 总7页 (文件大小：347K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : EN7161
Monolithic Linear IC
L78MS05J
L78MS05JSMP
5V Constant-Voltage
Power Supply with
Strobe Line
Overview
The L78MS05J and L78MS05JSMP are general-purpose constant voltage power supplies that feature an output current of
500mA and a built-in on/off function. The current drain in the output off state is low, making these devices effective for
reducing power consumption in application equipment. The surface mounting package can contribute to miniaturization
and improved efficiency. These devices are optimal for use in all types of AV and OA equipment and in automotive
applications (such as power supplies for meters) as well.
Functions
• Strobe pin that controls the on/off state of the output voltage (active low input).
• 500mA output current.
Features
• TO-220-5H package for easier mounting and thermal design (L78MS05J).
• SMP5 package for easier mounting and thermal design (L78MS05JSMP).
• Low output off state current drain makes these devices optimal for saving power in applications.
• Full complement of built-in protection circuits (current limiter and thermal protection circuit).
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum input voltage
Maximum strobe pin voltage
Symbol
max
Conditions
Ratings
Unit
V
V
35
IN
VST max
V
max
V
IN
Continued on next page.
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.
92706 / 10606 MS OT B8-5886 No.7161-1/7
L78MS05J/L78S05JSMP
Continued from preceding page.
Parameter
Symbol
max
Conditions
Ratings
Unit
W
Allowable power dissipation
P
L78MS05J - independent IC
L78MS05J SMP *: When mounted on the
stipulated circuit
1.75
3.9
d
W
board 1
*: When mounted on the
stipulated circuit
2.0
W
board 2
Operating temperature
Operating temperature
Topr
Tstg
-40 to +85
°C
°C
-58 to +150
*: Stipulated circuit board 1:
*: Stipulated circuit board 2:
140×300×1.6mm³ Cooper foil ratio: 60% FR4
76.1×114.3×1.6mm³ Cooper foil ratio: 60% FR4
Heat sink fin mounting area pattern: 23% [2000mm²]
Allowable Operating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
7.5 to 20.0
Unit
V
Input voltage
V
IN
Output current
L
0 to 500
mA
V
OUT
Output on control voltage
Output off control voltage
VSTL
VSTH
-0.3 to 0.8
2.0 to V
IN
mA
Electrical Characteristics at Ta = 25°C, V = 10V, I
IN
= 350mA
OUT
Ratings
typ
Parameter
Symbol
Conditions
Unit
min
max
[Output On State, VST = low]
Output voltage 1
Line regulation 1
Line regulation 2
Load regulation 1
Load regulation 2
Output voltage 2
Current drain
V
1
4.8
5.0
5.2
50
V
mV
mV
mV
mV
V
OUT
∆VOLN1
∆VOLN2
∆VOLD1
∆VOLD2
7V ≤ V ≤ 25V, I
IN
= 200mA
= 200mA
3
1
OUT
8V ≤ V ≤ 20V, I
IN
25
OUT
5mA ≤ I
5mA ≤ I
≤ 500mA
≤ 200mA
100
50
OUT
OUT
V
2
7V ≤ V ≤ 20V, 5mA ≤ I
≤ 350mA
4.75
5.25
5.0
OUT
IQ
IN
OUT
1.9
90
mA
µVrms
dB
Output noise voltage
Ripple rejection
VNO
10Hz ≤ f ≤ 100kHz
Rrej1
Rrej2
Vdrop
f = 120Hz, 8V ≤ V ≤ 19V, I
IN
= 100mA
60
60
63
OUT
= 300mA
f = 120H, 8V ≤ V ≤ 19V, I
IN
54
dB
OUT
Minimum input to
output voltage drop
Output on control
voltage
I
= 350mA
2.0
V
OUT
VSTL
0.8
V
Short circuit current
IOSC
IOP
V
= 35V, for GND
300
700
mA
mA
IN
Peak output current
[Output Off State, VST = high]
Low-level output
voltage
VO
VST = 5V
20
35
200
40
mV
µA
V
OFF
Quiescent current
IQ
VST = 5V, except for ISTB
OFF
Output off control
voltage
VSTH
TTSD
2.0
V
IN
[Thermal Protection]
Operating
Design target value*
150
180
°C
temperature
* This rating is a design target value and is not measured.
No.7161-2/7
L78MS05J/L78S05JSMP
Package Dimensions
unit : mm
3079A
[L78MS05J]
3275
[L78MS05JSMP]
[L78MS05J]
[L78MS05JSMP]
Pin Arrangement
[L78MS05J]
[L78MS05JSMP]
L78MS05J
L78MS05J
1:V
IN
2:NC
1:V
IN
2:NC
3:GND
4:STB
1
5
3:GND
4:STB
5:V
OUT
1
5
5:V
OUT
Top view
Top view
Note: NC pins must not be used (Pin number 2 in the pin arrangement)
No.7161-3/7
L78MS05J/L78S05JSMP
Block Diagram
Stipulated Test Circuits
Application Notes
Notes: 1. C and C
must be located as close as possible to the IC to stabilize IC operation.
must be 0.1µF or larger, and a capacitor (such as a tantalum capacitor) with a low temperature
IN OUT
2. C
OUT
coefficient must be used to prevent oscillation at low temperatures.
3. If the STB pin is open, the internal bias will result in the output going to the on state. If the STB function is not
used, the STB pin must be connected to ground to complete the STB operation.
4. Note that a large current will flow if the IC is connected in reverse, that is, if V is connected to - and GND is
IN
connected to +.
No.7161-4/7
L78MS05J/L78S05JSMP
Function Table
V
OUT
V
VSTB
Low
OUT
High
Low
0
t
t
High
VSTB
0
ON/OFF Control Input Block Equivalent Circuit Diagram
No.7161-5/7
L78MS05J/L78S05JSMP
No.7161-6/7
L78MS05J/L78S05JSMP
Specifications of any and all SANYO Semiconductor products described or contained herein stipulate the
performance, characteristics, and functions of the described products in the independent state, and are
not guarantees of the performance, characteristics, and functions of the described products as mounted
in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an
independent device, the customer should always evaluate and test devices mounted in the customer's
products or equipment.
SANYO Semiconductor Co., Ltd. strives to supply high-quality high-reliability products. However, any
and all semiconductor products fail with some probability. It is possible that these probabilistic failures
could give rise to accidents or events that could endanger human lives, that could give rise to smoke or
fire, or that could cause damage to other property. When designing equipment, adopt safety measures
so that these kinds of accidents or events cannot occur. Such measures include but are not limited to
protective circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO Semiconductor products (including technical data,services) described
or contained herein are controlled under any of applicable local export control laws and regulations, such
products must not be exported without obtaining the export license from the authorities concerned in
accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system, or
otherwise, without the prior written permission of SANYO Semiconductor Co., Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification"
for the SANYO Semiconductor product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not
guaranteed for volume production. SANYO Semiconductor believes information herein is accurate and
reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual
property rights or other rights of third parties.
This catalog provides information as of January, 2006. Specifications and information herein are subject
to change without notice.
PS No.7161-7/7
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