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RT9712 の電気的特性と機能

RT9712のメーカーはRichtek Technology Corporationです、この部品の機能は「1A/1.5A High-Side Dual Power Switches」です。


製品の詳細 ( Datasheet PDF )

部品番号 RT9712
部品説明 1A/1.5A High-Side Dual Power Switches
メーカ Richtek Technology Corporation
ロゴ Richtek Technology Corporation ロゴ 




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RT9712 Datasheet, RT9712 PDF,ピン配置, 機能
®
RT9712
90mΩ, 1A/1.5A High-Side Dual Power Switches with Flag
General Description
The RT9712 power-distribution switches are designed to
fulfill the applications in heavy capacitive loads and short-
circuit situations. The device incorporates two 90mΩ N-
MOSFET power switches to fit power distribution systems
requiring multiple power switches in a single package.
During switching process, an internal charge pump is
designed to provide the gate drive for the purpose of power-
switch rise times and fall times controlling to minimize
the current surges. The charge pump can operate in supply
voltage as low as 2.7V and needs no external
components.
If the output load exceeds the current-limit threshold or a
short-circuit occurs.The RT9712 series pull the overcurrent
(FLGx) logic output low by switching into the constant-
current mode to maintain the output current in a safe level,
A thermal protection circuit turns off the switch to prevent
the device from damage when power dissipation is
increased by continuous heavy overloads and short-circuits
in the switch and finally cause the rise of the junction
temperature. The device automatically recovers when it
has sufficiently cooled down. The RT9712A/B are designed
for the current limit at typically 2A and RT9712C/D are
designed for the current limit at typically 1.5A. Internal
circuitry controls the switch to remain off until valid input
voltage is presented.
Pin Configurations
(TOP VIEW)
GND
VIN
EN1
EN2
2
3
4
8 FLG1
7 VOUT1
6 VOUT2
5 FLG2
RT9712A/C
GND
VIN
EN1
EN2
2
3
4
8 FLG1
7 VOUT1
6 VOUT2
5 FLG2
RT9712B/D
SOP-8/MSOP-8
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS9712-04 November 2012
Features
z 90mΩ N-MOSFET Switch
z Operating Voltage Range : 2.7V to 5.5V
z Reverse Blocking Current
z Under Voltage Lockout
z Deglitched Fault Report (FLGx)
z Thermal Protection with Foldback
z Over Current Protection
z Short Circuit Protection
z UL ApprovedE219878
z Nemko Approved-NO49352
z RoHS Compliant and Halogen Free
Applications
z USB Peripherals
z Notebook PCs
Ordering Information
RT9712
Package Type
S : SOP-8
F : MSOP-8
Note :
Lead Plating System
G : Green (Halogen Free and Pb Free)
Output Current/ENx Function
A : 1.5A/Active High
B : 1.5A/Active Low
C : 1A/Active High
D : 1A/Active Low
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1

1 Page





RT9712 pdf, ピン配列
Function Block Diagram
EN1/EN1
Bias
Oscillator
Charge
Pump
Thermal
Protection
VIN
EN2/EN2
Bias
UVLO
Oscillator
Charge
Pump
Current
Limiting
Gate
Control
Output Voltage
Detection
Delay
Current
Limiting
Gate
Control
Output Voltage
Detection
GND
Delay
RT9712
VOUT1
FLG1
VOUT2
FLG2
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS9712-04 November 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
3


3Pages


RT9712 電子部品, 半導体
RT9712
Typical Operating Characteristics
On Resistance vs. Input Voltage
96
95
94
93
92
91
IOUT = 1.4A
90
2.5 3 3.5 4 4.5 5 5.5
Input Voltage (V)
Quiescent Current vs. Input Voltage
50.0
47.5
45.0
42.5
40.0
37.5
35.0
32.5
30.0
27.5
25.0
22.5 No Load
20.0
2.5 3 3.5 4 4.5 5 5.5
Input Voltage (V)
Shutdown Current vs. Input Voltage
0.30
0.25
0.20
0.15
0.10
0.05
No Load
0.00
2.5 3 3.5 4 4.5 5 5.5
Input Voltage (V)
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
www.richtek.com
6
120
115
110
105
100
95
90
85
80
75
70
-40
On Resistance vs. Temperature
VIN = 5V, IOUT = 1.4A
-20 0 20 40 60 80 100
Temperature (°C)
Quiescent Current vs. Temperature
50.0
47.5
45.0
42.5
40.0
37.5
35.0
32.5
30.0
27.5
25.0
22.5 VIN = 5V, No Load
20.0
-40 -20
0
20 40 60 80 100
Temperature (°C)
Shutdown Current vs. Temperature
1
VIN = 5V
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
-40
-20
0 20 40 60
Temperature (°C)
80 100
is a registered trademark of Richtek Technology Corporation.
DS9712-04 November 2012

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
RT9711

1.5A High-Side Power Switches

Richtek Technology Corporation
Richtek Technology Corporation
RT9711A

1.5A/0.6A High-Side Power Switches

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RT9711A

1.5A/0.6A High-Side Power Switches

Richtek
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RT9711B

1.5A/0.6A High-Side Power Switches

Richtek Technology Corporation
Richtek Technology Corporation


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