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PDF AUR9811D Data sheet ( Hoja de datos )
| Número de pieza | AUR9811D | |
| Descripción | LI-ION/LI POLYMER BATTERY CHARGER | |
| Fabricantes | Diodes | |
| Logotipo |  |
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AUR9811D
LI-ION/LI POLYMER BATTERY CHARGER
Description
Pin Assignments
The AUR9811D is a highly-integrated battery charger for single-cell
Li-ion or Li-polymer batteries capable of operating with an input
voltage reached 2.5V. It is a complete charger device designed to
work with an USB port or 5V output AC adapter.
(Top View)
Pin 1 Mark
The AUR9811D operates with CC (constant current) mode and CV
(constant voltage) mode profiles. A low-current preconditioning
charge mode is also provided as a trickle charging operation. The
charge current is programmable up to 1A with an external resistor or
a logic input. The charge voltage is 1% accurate over the full
application range.
When operating with a current-limited adapter, the charger minimizes
the thermal dissipation with pulsed operations to prevent overheat
conditions that is commonly occurred with conventional linear
chargers. The AUR9811D reduces charge current for thermal fold-
back to ensure product safe operation. The charger automatically re-
charges the battery when the battery voltage drops below a recharge
threshold. The chip includes a safety timer for setting the fast charge
time limit in case of charging a dead battery.
Additional features include preconditioning of an over-discharged
battery and charging the battery in a safe temperature range with an
NTC thermistor interface. The thermally enhanced DFN package is
offered for space limited handheld applications.
The AUR9811D is available in WDFN-3X3-10 package.
VIN 1
FAULT 2
STATUS 3
TIME 4
GND 5
10 VBAT
9 TEMP
8 IREF
7 V2P8
6 EN
WDFN-3×3-10
Applications
PDAs, Cell Phones and Smart Phones
Digital Camera, MP3 and Handheld Gamming
Portable Instruments including Medical Handhelds
Self-Charging Battery Packs
Stand-Alone Chargers or USB Port Chargers
Features
Complete Charger for Single-Cell Li-Ion Batteries
Charges from Either AC Adapter or USB Port
Integrated Power Pass Device with Current Sensing
No External Blocking Diode Required
Pre-charge Condition with Safety Timing
Charger Voltage Accuracy: 1%
Programmable Current Limit up to 1A
Sleep Mode for Power Saving
Charge Current Thermal Fold-back
NTC Thermistor Interface for Battery Temperature Monitor
Stand-Alone or Integrated Charger
Ambient Temperature Range: -40°C to +85°C
Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and
Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
AUR9811D
Document number: DS39015 Rev. 1 - 2
1 of 14
www.diodes.com
July 2016
© Diodes Incorporated
1 page  
AUR9811D
Electrical Characteristics (VIN=5V and TA=+25°C for the typical values. The maximum and minimum values are over -40°C to
+85°C ambient temperature with a supply voltage in the range of 4.6V to 5.5V, unless otherwise noted.)
Symbol
Parameter
Test Condition
Power-On Reset
— VIN Rising Voltage
—
— VIN falling Voltage
—
Standby Current
ISTANDBY
VBAT Pin Sink Current
VIN floating or EN=LOW
VBAT floating and EN pulled low
IIN VIN Pin Supply Current
VBAT and EN floating
VIN-VBAT Offset Voltage
VOS Offset Voltage
Voltage Regulation
VBAT=4.2V,
IBAT= 20mA,
use STATUS pin
VBAT
Output Voltage
— Dropout Voltage
Charge Current
ICHG Constant Charge Current
ITRICKLE
IMIN
Trickle Charge Current
End-of-Charge Threshold
Tested at 50mA load, 5V input, and +25°C
VBAT=4.0V,
charge current = 0.35A
RIREF=100kΩ,
VBAT=3.0V to 4.0V
RIREF=100kΩ, VBAT=2.5V
RIREF=100kΩ
V2P8 Pin Output
V2P8
V2P8 Pin Output Voltage
Load current less than 1mA
Recharge Threshold
VRECHG
Recharge Threshold
VRECHG-HYS
Recharge Threshold
Hysteresis
Trickle Charge Threshold
—
—
VMIN
VMINHYS
Trickle Threshold Voltage
Trickle Threshold Hysteresis
—
—
Min
3.2
2.25
—
—
—
45
4.158
—
760
—
70
2.8
3.97
—
2.7
50
Typ Max Unit
3.6 3.9 V
2.5 2.7 V
— 3.3 μA
150 — μA
— 1 mA
80 100 mV
4.2 4.242 V
175 — mV
800 840 mA
120 — mA
80 90 mA
2.9 3.0 V
4.05 4.13
V
50 — mV
2.8 2.9 V
100 150 mV
AUR9811D
Document number: DS39015 Rev. 1 - 2
5 of 14
www.diodes.com
July 2016
© Diodes Incorporated
5 Page 
Flow Chart
Power on & EN
AUR9811D
Battery Exist?
Yes
No
Pre-charge, timer
start
VBAT >2.8V for 16
clocks ?
No
Yes
No
1/8 Timeout ?
Yes
Fault
Fast charge
VBAT > 4.2V ?
Yes
No
Constant voltage
Charge mode
ICHG < IMIN ?
Yes
No
No
Yes
Timeout ?
No
Yes
Timeout ?
Timeout?
No
Yes
Yes
Standby mode,
Charger off
VBAT < 4.0V ?
No
AUR9811D
Document number: DS39015 Rev. 1 - 2
11 of 14
www.diodes.com
July 2016
© Diodes Incorporated
11 Page | ||
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| PDF Descargar | [ Datasheet AUR9811D.PDF ] | |
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