RT9466 반도체 회로 부품 판매점
5A Single Cell Li-Ion Switching Battery Charger
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 Richtek Technology |
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RT9466
5A Single Cell Li-Ion Switching Battery Charger with Power
Path Management and USB-OTG Boost Mode
General Description
The RT9466 is a switch-mode single cell Li-Ion/Li-Polymer
battery charger for portable applications. It integrates a
synchronous PWM controller, power MOSFETs, input
current sensing and regulation, high-accuracy voltage
regulation, and charge termination. The charge current is
regulated through integrated sensing resistors. The
RT9466 also features USB On-The-Go (OTG) support.
The RT9466 optimizes for charging task by using a control
algorithm to vary the charge rate for different modes,
including pre-charge mode, fast charge mode (constant
voltage and constant current). The key charge parameters
are programmable through an I2C interface. The RT9466
will resume the charge cycle whenever the battery voltage
falls below an internal recharge threshold, and can
automatically enter sleep mode if the input power supply
is removed.
Other features include under-voltage protection, over
voltage protection, thermal regulation and reverse leakage
protection.
The RT9466 is available in a WQFN-24L 4x4 package.
Applications
Cellular Telephones
Personal Information Appliances
Tablet PC, Power Bank
Portable Instruments
Ordering Information
RT9466
Package Type
QW : WQFN-24L 4x4 (W-Type)
(Exposed Pad-Option 2)
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.
Features
High Efficiency 5A, 1.5MHz Switching Charger with
Output Inductor DFE252012F, TOKO
Charging Efficiency 90.25% at ICHG = 2A
Charging Efficiency 88.86% at ICHG = 3A
Charging Efficiency 84.2% at ICHG = 5A
Synchronous 1.5MHz/0.75MHz Fixed-Frequency
PWM Controller with Up to 95% Duty Cycle
Power Path Management by BATFET Control
Support High Voltage Input (9V/12V)
Support High Voltage Input Adapter (Pump Express
1.0/2.0)
Support IR Compensation Function from Charger
Output to Cell Terminal
Optimize Input Sourcing Capability to Prevent
Overload
AICR Current Limit Setting via I2C
ILIM Pin for Current Limit Setting
Average Input Current Limit Measurement
Shipping Mode for Battery Leakage Reduction
Wake Up System, Exit Shipping Mode, and Reset
System by QON Pin
Automatic Charging
Average Input Current Regulation (AICR) :
0.1A to 3.25A in 50mA Steps
Charge Current Regulation Accuracy : ± 7%
Charge Voltage Regulation Accuracy : ± 1% (0 to
85°C)
Protection for Overall System Considerations
Thermal Regulation for Current Reduction and
Over-Temperature Protection
Input Over-Voltage Protection
Input Bad Adapter Protection
Battery Over-Voltage Protection
Support ADC Conversion for
VBUS, VBAT, VSYS, REGN, TS_BAT, IBUS, IBAT,
TEMP_JC
INT Output for Communication with Host Through
I2C (Watch Dog / Polling Function)
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
DS9466-01 December 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
RT9466
Marking Information
4S= : Product Code
4S=YM
DNN
YMDNN : Date Code
Pin Configuration
(TOP VIEW)
VBUS
PSEL
PG
STAT
SCL
SDA
24 23 22 21 20 19
1 18
2 17
3 16
PGND
4 15
5 25 14
6 13
7 8 9 10 11 12
PGND
PGND
SYS
SYS
BAT
BAT
Typical Application Circuit
Input
4V to 14V
2.2µF
8.2µF
1µF
710
To I2C BUS
RT9466
1 VBUS
BTST 21
23 VMID
LX 19, 20
22 REGN
3
PG
4 STAT
SYS 15, 16
BAT 13, 14
10 ILIM
5 SCL
6 SDA
9 CEB
8 OTG
2 PSEL
TS 11
INT 7
QON 12
PGND
17, 18
WQFN-24L 4x4
47nF
1µH
To System
22µF
10µF
REGN
Battery
Pack
Pin
VBUS
VMID
BTST
SYS
BAT
LX
Below are recommended capacitor and inductor information
Description
Part Number
Package Manufacturer
2.2F/25V/X5R
GRM155R61E225KE11
0402
muRata
4.7F/25V/X5R
GRM188R61E475KE11
0603
muRata
47nF/16V/X7R
GRM033R61C473KE84D
0201
muRata
22F/6.3V/X5R
GRM188R60J226ME39
0603
muRata
10F/6.3V/X5R
GRM185R60J106ME15
0603
muRata
1H/20%
DFE252012F-1R0
2.5 x 2mm TOKO
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS9466-01 December 2016
|
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RT9466 battery
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
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전력반도체 문의 : 010-3582-2743
