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PDF RT9505 Data sheet ( Hoja de datos )
| Número de pieza | RT9505 | |
| Descripción | Fully Integrated Linear Single Cell Li-Ion Battery Charger | |
| Fabricantes | Richtek Technology | |
| Logotipo |  |
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Conceptual
RT9505
Fully Integrated Linear Single Cell Li-Ion Battery Charger
for Portable Applications
General Description
The RT9505 is a fully integrated low cost single-cell Li-
Ion battery charger ideal for portable applications. The
RT9505 is capable of being powered up from AC adapter
inputs. The RT9505 enters sleep mode when supplies is
removed.
The RT9505 optimizes the charging task by using a control
algorithm including preconditioning mode, fast charge
mode and constant voltage mode. The charging task is
terminated as the charge current drops below the preset
threshold. The AC adapter charge current can be
programmed up to 1A with an external resister. The internal
thermal feedback circuitry regulates the die temperature
to optimize the charge rate for all ambient temperatures.
The RT9505 features 18V and 7V maximum rating voltages
for AC adapter. The other features are under voltage
protection, over voltage protection for AC adapter supply,
battery temperature monitoring, power supply status
indicators and charge status indicator.
Features
z Automatic Input Supplies Selection
z 18V Maximum Rating for AC Adapter
z Internal Integrated Power FETs
z AC Adapter Power Good Status Indicator
z Charge Status Indicator
z Under Voltage Protection
z Over Voltage Protection
z Automatic Recharge Feature
z Battery Temperature Monitoring
z Small 10-Lead WDFN Package
z Thermal Feedback Optimizing Charge Rate
Applications
z Digital Cameras
z Cellular Phones
z Personal Data Assistants (PDAs)
z MP3 Players
z Hand Held PCs
Ordering Information
RT9505
Package Type
QW : WDFN-10L 3x3 (W-Type)
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
Note :
RichTek Pb-free and Green 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.
`100% matte tin (Sn) plating.
Pin Configurations
(TOP VIEW)
ACIN 1
NC 2
CHG_S 3
PGOOD 4
GND 5
GND
10 BATT
9 TS
8 EN
7 NC
ISETA
WDFN-10L 3x3
Marking Information
For marking information, contact our sales representative
directly or through a RichTek distributor located in your
area, otherwise visit our website for detail.
DS9505-00C February 2007
www.richtek.com
1
1 page  
Conceptual
RT9505
Absolute Maximum Ratings (Note 1)
z AC Input Voltage ----------------------------------------------------------------------------------------------------------- −0.3V to 18V
z EN Input Voltage ----------------------------------------------------------------------------------------------------------- −0.3V to 6V
z Output Current ------------------------------------------------------------------------------------------------------------- 1.2A
z Power Dissipation, PD @ TA = 25°C
WDFN-10L 3x3 ------------------------------------------------------------------------------------------------------------- 0.926W
z Package Thermal Resistance (Note 4)
WDFN-10L 3x3, θJA ------------------------------------------------------------------------------------------------------- 108°C/W
WDFN-10L 3x3, θJC ------------------------------------------------------------------------------------------------------- 8.2°C/W
z Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------- 260°C
z Junction Temperature ---------------------------------------------------------------------------------------------------- 150°C
z Storage Temperature Range -------------------------------------------------------------------------------------------- −65°C to 150°C
z ESD Susceptibility (Note 2)
HBM (Human Body Mode) ---------------------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------------------ 200V
Recommended Operating Conditions (Note 3)
z Junction Temperature Range -------------------------------------------------------------------------------------------- −40°C to 125°C
z Ambient Temperature Range -------------------------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(ACIN = 5V, TA = 27°C, Unless Otherwise specification)
Parameter
Symbol
Test Conditions
Min
Supply Input
ACIN Input Voltage Range
VACIN
ACIN UVP Rising Threshold Voltage VUV(HIGH)
ACIN UVP Hysteresis
VUV(LOW)
ACIN Standby Current
ISTBY
ACIN Shutdown Current
ISHDN
ACIN UVP Current
IUVP
BATT Sleep Leakage Current
ISLEEP
Voltage Regulation
BATT Regulation Voltage
VREG
Regulation Voltage Accuracy
VBATT = 4.5V
VEN = HIGH;
VACIN = 4V; VBATT = 3V ;
VACIN = 4V; VBATT = 4.5V ;
4.5
4.3
80
--
--
--
--
IBATT = 60mA
4.158
−1
ACIN MOSFET
Current Regulation
ISETA Set Voltage
(Fast Charge Phase)
Full Charge setting range
AC Charge Current accuracy
RDS(ON)_ACIN IBATT = 500mA
--
VISETA
ICHG(AC)
ICHG(AC)
VBATT = 3.5V
2.45
100
VBATT = 3.8V; RISET = 1.5kΩ --
Precharge
BATT Pre-charge Rising Threshold
BATT Pre-charge Threshold
Hysteresis
VPRECH
ΔVPRECH
2.7
80
DS9505-00C February 2007
Typ Max Units
-- 6 V
4.4 4.5 V
100 120 mV
300 500 μA
50 100 μA
150 250 μA
2 5 μA
4.2 4.242 V
-- +1 %
600 -- mΩ
2.5 2.55 V
-- 1200 mA
500 -- mA
2.8 2.9 V
100 120 mV
To be continued
www.richtek.com
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet RT9505.PDF ] | |
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