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RT9991 の電気的特性と機能

RT9991のメーカーはRichtek Technology Corporationです、この部品の機能は「Power Management IC」です。


製品の詳細 ( Datasheet PDF )

部品番号 RT9991
部品説明 Power Management IC
メーカ Richtek Technology Corporation
ロゴ Richtek Technology Corporation ロゴ 




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RT9991 Datasheet, RT9991 PDF,ピン配置, 機能
RT9991
Power Management IC for SSD
General Description
The RT9991 is a 3-CH PMIC for SSD (Solid-State Drive).
It integrates 3 synchronous buck converters and one
voltage detector.
The RT9991 provides 3 independent enable pins for
sequence control and auto discharge when powered off
on the power line of a NAND Flash.
The frequency can be up to 1.5MHz for Buck 1and Buck
2, and up to 2MHz for Buck 3, hence allowing the use of
smaller sized inductors to meet the space and height limit
in handheld applications.
To maximize power utilization, the RT9991 is designed
with extremely low quiescent current. The buck converter
can consume down to 70μA when operating in standby
mode.
The RT9991 is available in a VQFN-32L 5x5 package.
Ordering Information
RT9991
Package Type
QV : VQFN-32L 5x5 (V-Type)
Note :
Lead Plating System
G : Green (Halogen Free and Pb Free)
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
RT9991
GQV
YMDNN
RT9991GQV : Product Number
YMDNN : Date Code
Features
z Supply Input Voltage Range : 2.8V to 5.5V
z Buck 1 / Buck 2
` Adjustable Output Voltage for VCORE or DRAM
Cache
` Output Current up to 1A
` Switching Frequency : 1.5MHz
z Buck 3
` Adjustable Output Version for NAND Flash
` Output Current up to 3A
` Switching Frequency : 2MHz
` Auto Discharge Function
z Voltage Detector
` Programmable Threshold Voltage
` Open-Drain Reset Output
z RoHS Compliant and Halogen Free
Applications
z 1.8/2.5 inch Solid-State Drives
z Portable Devices
USB-Based Hand-Held Productszhttp://www.DataSheet4U.net/
Pin Configurations
(TOP VIEW)
32 31 30 29 28 27 26 25
GND
LX3
LX3
LX3
VIN3
VIN3
EN3
FB3
1
2
3
4
5
6
7
8
GND
24 LX2
23 GND
22 GND
21 VIN2
20 VIN1
19 GND
33 18 GND
17 LX1
9 10 11 12 13 14 15 16
VQFN-32L 5x5
DS9991-01 April 2011
www.richtek.com
1
datasheet pdf - http://www.DataSheet4U.net/

1 Page





RT9991 pdf, ピン配列
RT9991
Functional Pin Description
Pin No.
Pin Name
Pin Function
1, 18, 19, 22, 23, 32,
33 (Exposed Pad)
GND
Ground. The exposed pad must be soldered to a large PCB and connected
to GND for maximum power dissipation.
2, 3, 4
LX3 Buck Converter 3 Switch Output (inductor connection point).
5, 6
VIN3
Buck Converter 3 Power Supply Input.
7
EN3
Buck Converter 3 Chip Enable (Active High).
8 FB3 Buck Converter 3 Feedback Input.
9, 12, 29, 30, 31 NC
No Internal Connection.
10
RESET
Reset Output.
11
VDET
Threshold Voltage Detect Setting.
13 FB1 Buck Converter 1 Feedback Input.
14
EN1
Buck Converter 1 Chip Enable (Active High).
15, 20
VIN1
Buck Converter 1 Power Supply Input.
16, 17
LX1 Buck Converter 1 Switch Output (inductor connection point).
21, 26
VIN2
Buck Converter 2 Power Supply Input.
24, 25
LX2 Buck Converter 2 Switch Output (inductor connection point).
27
EN2
Buck Converter 2 Chip Enable (Active High).
28 FB2 Buck Converter 2 Feedback Input.
http://www.DataSheet4U.net/
DS9991-01 April 2011
www.richtek.com
3
datasheet pdf - http://www.DataSheet4U.net/


3Pages


RT9991 電子部品, 半導体
RT9991
Note 1. Stresses listed as the above Absolute Maximum Ratingsmay cause permanent damage to the device. These are for
stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the
operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended
periods may remain possibility to affect device reliability.
Note 2. θJA is measured in natural convection at TA = 25°C on a high-effective thermal conductivity four-layer test board of
JEDEC 51-7 thermal measurement standard. The measurement case position of θJC is on the exposed pad of the
package.
Note 3. Devices are ESD sensitive. Handling precaution is recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
http://www.DataSheet4U.net/
www.richtek.com
6
DS9991-01 April 2011
datasheet pdf - http://www.DataSheet4U.net/

6 Page



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共有リンク

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部品番号部品説明メーカ
RT9991

Power Management IC

Richtek Technology Corporation
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RT9996

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