AN34078A [PANASONIC]
Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, PSMA5, PLASTIC PACKAGE-5;
| 型号： | AN34078A |
| 厂家： | 
PANASONIC |
| 描述： | Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, PSMA5, PLASTIC PACKAGE-5 信息通信管理 |
| 文件： | 总13页 (文件大小：352K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DATA SHEET
Part No.
AN34078A
Package Code No.
SMINI-5DE
Publication date: May 2011
Ver. AEB
1
AN34078A
Contents
Overview …………………………………………………….………………………………………………………
Features ………………………………………………….…………………………………………………………
Applications ………………………………………………….………………………………………………………
Package ………………………………………………….………………………………………………………….
Type ……………………………………………………….………………………………………………………….
Application Circuit Example (Block Diagram) ……………………………………………………………………
Pin Descriptions ………………………………………….…………………………………………………………
Absolute Maximum Ratings ……………………………….………………………………………………………
3
3
3
3
3
4
5
6
Operating Supply Voltage Range …………………….…………………………………………………………… 6
Allowable Current and Voltage Range ……………………………………………………………………………
Electrical Characteristics …………….……………………………………………………………………………
6
7
Control Pin Mode Table ………………………….…………………………………………………………………. 8
Technical Data ……………….……………………………………………………………………………………… 9
y Operation sequence……………………………………… ………………………………………………………. 9
y I/O block circuit diagrams and pin function descriptions………………………………………………………. 10
y PD ⎯ Ta diagram ………………………………………………………………………………………………… 12
Usage Notes ………………………………………….……………………………………………………………. 13
Ver. AEB
2
AN34078A
AN34078A
High Side Switch with built in 1.8 V internal regulator
Overview
AN34078A is a power management IC with selectable Load Switch & internal 1.8 V Regulator.
Features
y Miniature-package
y Pin control to set VOUT to 1.8 V or VCC
Applications
y Memory card slot
Package
y 5 pin Plastic Small Surface Mount Package (SMINI Type)
Type
y Bi-CMOS IC
Ver. AEB
3
AN34078A
Application Circuit Example (Block Diagram)
VCC
5
VCC
VCC
BGR
VCC
CVCC
3.0 V
Vref
Enable
4
VOUT (100 mA)
VCC
130 kΩ
470 kΩ
130 kΩ
470 kΩ
1 μF
1
3
EN1
EN2
Feed
Back
On / Off
control
50 Ω
2
GND
Notes) y This application circuit is an example. The operation of mass production set is not guaranteed. Perform enough evaluation and verification on
the design of mass production set.
y This block diagram is for explaining functions. Part of the block diagram may be omitted, or it may be simplified.
Ver. AEB
4
AN34078A
Pin Descriptions
Pin No.
Pin name
Type
Input
Description
1
2
3
4
5
EN1
Enable pin 1
Signal Ground
Enable pin 2
Signal output
Input voltage
GND
EN2
Ground
Input
VOUT
VCC
Output
Power supply
Ver. AEB
5
AN34078A
Absolute Maximum Ratings
Note) Absolute maximum ratings are limit values which do not result in damages to this IC, and IC operation is not guaranteed at these limit values.
A No.
Parameter
Supply Voltage
Symbol
VCC
IL
Rating
3.8
Unit
V
Notes
*1
1
2
3
4
5
Load Current
—
mA
mW
°C
—
Power Dissipation
PD
60
*2
Operating Ambient Temperature
Storage Temperature
Topr
Tstg
–25 to +75
–55 to +125
*3
°C
*3
Notes)*1 : The values under the condition not exceeding the above absolute maximum ratings and the power dissipation.
*2 : The power dissipation shown is the value at Ta = 75°C for the independent (unmounted) IC package without a heat sink.
When using this IC, refer to the PD-Ta diagram in the Technical Data standard and design the heat radiation with sufficient margin so that
the allowable value might not be exceeded based on the conditions of power supply voltage, load, and ambient temperature.
*3 : Except for the power dissipation, operating ambient temperature, and storage temperature, all ratings are for Ta = 25°C.
Operating supply Voltage Range
Parameter
Supply voltage range
Symbol
Range
Unit
Note
VCC
2.7 to 3.6
V
*1
Note) *1 : The values under the condition not exceeding the above absolute maximum ratings and the power dissipation.
Allowable Current and Voltage Range
Notes) y Allowable current and voltage ranges are limit ranges which do not result in damages to this IC, and IC operation is not guaranteed within
these limit ranges.
y Voltage values, unless otherwise specified, are with respect to GND.
y VCC is voltage for VCC.
y Do not apply external currents or voltages to any pin not specifically mentioned.
y For the circuit currents, "+" denotes current flowing into the IC, and "−" denotes current flowing out of the IC.
Pin No.
Pin name
EN1
Rating
Unit
V
Notes
*5
1
3
4
− 0.3 to (VCC + 0.3)
− 0.3 to (VCC + 0.3)
–100 to 0
EN2
V
*5
VOUT
mA
—
Note) *5 : (VCC + 0.3)V must not be exceeded 3.8 V.
Ver. AEB
6
AN34078A
Electrical Characteristics at VCC = 3.0V
Note) Ta = 25°C 2°C unless otherwise specified.
Limits
Typ
B
No.
Note
Parameter
Symbol
Conditions
Unit
Min
Max
Consumption Current Characteristics
EN1 : Low, EN2 : Low,
No load
1
2
3
Standby current
ISTB
IICQ1
IICQ2
—
—
—
—
50
65
1
μA
μA
μA
—
—
—
Quiescent current 1
(Switch Mode)
EN1 : High, EN2 : Low,
No load
110
110
Quiescent current 2
(Regulator Mode)
EN1 : High, EN2 : High,
No load
High Side Switch Characteristic
EN1 : High, EN2 : Low,
VOUT voltage (VA)
at No load,
4
ON Resistance
RON
—
3
5.5
Ω
—
VOUT voltage (VB)
at IOUT = – 80 mA,
ON = (VA – VB) /0.08
R
Regulator Characteristic
Output voltage
Standby Characteristic
Output Standby voltage
I/O Characteristics
Condition : Connect an external ceramic capacitor (Capacitance : 1.0 μF, ESR : 0.1 Ω or less)
VCC = 2.7 V,
No Load
5
VREG
1.755
1.8
1.845
V
—
EN1 : Low,
No load
6
VREGOFF
—
0
0.3
V
—
7
8
EN1 input current
EN2 input current
IEN1
IEN2
EN1 = 3.0 V
EN2 = 3.0 V
—
—
5
5
10
10
μA
μA
—
—
EN1 input High-level
voltage
9
VEN1H
VEN1L
VEN2H
VEN2L
Voltage detects as High
Voltage detects as Low
Voltage detects as High
Voltage detects as Low
1.3
—
—
—
—
—
—
0.6
—
V
V
V
V
—
—
—
—
EN1 input Low-level
voltage
10
11
12
EN2 input High-level
voltage
1.3
—
EN2 input Low-level
voltage
0.6
EN1 : Low,
VOUT voltage (VA)
at No load
VOUT voltage (VB)
13 Discharge Impedance
RDIS
30
50
80
Ω
—
at IOUT = +10 m A
ON = (VB – VA) / 0.01
R
Ver. AEB
7
AN34078A
Control Pin Mode Table
Note) See parameters No.9 to No.12 in the Electrical Characteristics for control voltage retention ranges.
Pin voltage
Pin No.
Description
Remarks
Low
High
1
3
EN1
EN2
Standby
Active
IC is on standby when control voltage is Low
Switch Mode : VOUT = VCC
Regulator mode : VOUT= VREG
Switch mode
Regulator mode
Ver. AEB
8
AN34078A
Technical Data
y Operation sequence
Note) The characteristics listed below are reference values derived from the design of the IC and are not guaranteed.
1) Standby mode → Switch mode → Standby mode
3.0 V
VCC
0 V
0 V
0 V
3.0 V
EN1
0 V
EN2
3.0 V
VOUT
0 V
0 V
100 μs
70 μs
2) Standby mode → Switch mode → Regulator mode → Standby mode
3.0 V
VCC
0 V
3.0 V
EN1
EN2
0 V
0 V
3.0 V
0 V
3.0 V
1.8 V
VOUT
0 V
0 V
70 μs
50 μs
100 μs
Notes) y Please turn on EN1 after VCC rises up in stable condition.
y Change EN1 from Low to High when EN2 = Low only.
Ver. AEB
9
AN34078A
Technical Data
y I/O block circuit diagrams and pin function descriptions
Note) The characteristics listed below are reference values derived from the design of the IC and are not guaranteed.
Pin
Waveform
Internal circuit
Impedance
Description
No. and voltage
130k
1
Pin name : EN1
Enable pin 1
1
2
3
DC
—
470k
DC
(0 V)
Pin name : GND
Signal Ground
2
—
—
130k
470k
3
Pin name : EN2
Enable pin 2
DC
VCC
4
DC
Pin name : VOUT
Signal Output
4
—
50
360k
5
DC
( Typ. 3.0 V)
Pin name : VCC
Input Voltage
5
—
Ver. AEB
10
AN34078A
Technical Data (continued)
y PD ⎯ Ta diagram
Ver. AEB
11
AN34078A
Usage Notes
y Special attention and precaution in using
1. This IC is intended to be used for general electronic equipment [Memory card slot].
Consult our sales staff in advance for information on the following applications:
x Special applications in which exceptional quality and reliability are required, or if the failure or malfunction of this IC may
directly jeopardize life or harm the human body.
x Any applications other than the standard applications intended.
(1) Space appliance (such as artificial satellite, and rocket)
(2) Traffic control equipment (such as for automobile, airplane, train, and ship)
(3) Medical equipment for life support
(4) Submarine transponder
(5) Control equipment for power plant
(6) Disaster prevention and security device
(7) Weapon
(8) Others : Applications of which reliability equivalent to (1) to (7) is required
It is to be understood that our company shall not be held responsible for any damage incurred as a result of or in connection with
your using the IC described in this book for any special application, unless our company agrees to your using the IC in this book
for any special application.
2. Pay attention to the direction of LSI. When mounting it in the wrong direction onto the PCB (printed-circuit-board), it might
smoke or ignite.
3. Pay attention in the PCB (printed-circuit-board) pattern layout in order to prevent damage due to short circuit between pins. In
addition, refer to the Pin Description for the pin configuration.
4. Perform a visual inspection on the PCB before applying power, otherwise damage might happen due to problems such as a solder-
bridge between the pins of the semiconductor device. Also, perform a full technical verification on the assembly quality, because
the same damage possibly can happen due to conductive substances, such as solder ball, that adhere to the LSI during
transportation.
5. Take notice in the use of this product that it might break or occasionally smoke when an abnormal state occurs such as output pin-
VCC short (Power supply fault), output pin-GND short (Ground fault), or output-to-output-pin short (load short) .
And, safety measures such as an installation of fuses are recommended because the extent of the above-mentioned damage and
smoke emission will depend on the current capability of the power supply.
6. When designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions
(operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed the range of absolute
maximum rating on the transient state, such as power-on, power-off and mode-switching. Otherwise, we will not be liable for any
defect which may arise later in your equipment.
Even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure
mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire
or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products.
7. When using the LSI for new models, verify the safety including the long-term reliability for each product.
8. When the application system is designed by using this LSI, be sure to confirm notes in this book.
Be sure to read the notes to descriptions and the usage notes in the book.
Ver. AEB
12
Request for your special attention and precautions in using the technical information and
semiconductors described in this book
(1) If any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and
regulations of the exporting country, especially, those with regard to security export control, must be observed.
(2) The technical information described in this book is intended only to show the main characteristics and application circuit examples
of the products. No license is granted in and to any intellectual property right or other right owned by Panasonic Corporation or any
other company. Therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any
other company which may arise as a result of the use of technical information described in this book.
(3) The products described in this book are intended to be used for general applications (such as office equipment, communications
equipment, measuring instruments and household appliances), or for specific applications as expressly stated in this book.
Consult our sales staff in advance for information on the following applications:
– Special applications (such as for airplanes, aerospace, automotive equipment, traffic signaling equipment, combustion equipment,
life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of
the products may directly jeopardize life or harm the human body.
It is to be understood that our company shall not be held responsible for any damage incurred as a result of or in connection with
your using the products described in this book for any special application, unless our company agrees to your using the products in
this book for any special application.
(4) The products and product specifications described in this book are subject to change without notice for modification and/or im-
provement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product
Standards in advance to make sure that the latest specifications satisfy your requirements.
(5) When designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions
(operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed the range of absolute
maximum rating on the transient state, such as power-on, power-off and mode-switching. Otherwise, we will not be liable for any
defect which may arise later in your equipment.
Even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure
mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire
or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products.
(6) Comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (ESD, EOS,
thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. When using products for which
damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages.
(7) This book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of our company.
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