|
|
PDF AAT3692 Data sheet ( Hoja de datos )
| Número de pieza | AAT3692 | |
| Descripción | Dual Input 1.6A Linear Charger | |
| Fabricantes | Skyworks | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AAT3692 (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
|
No Preview Available !
DATA SHEET
AAT3692
Dual Input 1.6A Linear Charger with 28V OVP in a 3x4 TDFN Package
General Description
The AAT3692 BatteryManager™ is an integrated single
cell Lithium-Ion (Li-Ion) battery charger IC, designed to
operate from USB ports, AC adapter inputs, or from a
cellular phone charger adapter up to an input voltage of
7.2V typical. For increased safety, the AAT3692 also
includes over-voltage input protection (OVP) up to 28V.
The AAT3692 precisely regulates battery charge voltage
and current for 4.2V Li-Ion battery cells. The charge
current can be programmed up to 1.6A for ADP charging
and 0.5A for USB charging by external resistors on the
ADPSET/USBSET pins; the percentage of the termination
charging current is programmable by an external resistor
on the RTERM pin. In the case of an over-voltage condition
of ADP or USB input power exceeding typical 7.2V, the
internal series switch opens, blocking the damage to the
battery and charging circuitry.
The AAT3692 also includes a no-battery present input
(NOBAT). When NOBAT indicates that no battery is pres-
ent, the charging function will be suspended while OVP
is still active.
Battery charging status is continuously monitored for
fault conditions. In the event of a battery over-voltage or
chip over thermal failure, the charger will automatically
suspend charging, protecting the charging device, control
system and battery, until the fault condition is removed.
An open drain POK pin indicates the valid input of AC
adapter or USB power; an open drain status monitor
output pin (STAT) is adopted to report battery charging
activity by active low.
The AAT3692 comes in a thermally enhanced, space-
saving, Pb-free 16-pin 3x4 mm TDFN package and is
specified for operation over the -40°C to +85°C tempera-
ture range.
Typical Application
Features
• Dual Input USB and AC Adapter Input
▪ Programmable Constant Current from 100mA to
1.6A for ADP Charge
▪ Programmable Constant Current from 50mA to 0.5A
for USB Charge
• No Battery Present Input Detection
• 3.0V ~ 7.2V (typical) Input Voltage Range
• Over-Voltage Input Protection up to 28V
• High Level of Integration with Internal:
▪ Power Device
▪ Reverse Current Blocking
▪ Current Sensing
• Automatic Recharge Sequencing
• Automatic Charge Reduction
• Programmable Charge Termination Current
Percentage
• Fast Over-Voltage Protection Turn Off and Release
Turn On Time
• Full Battery Charge Auto Turn Off/Sleep Mode/Charge
Termination
• Charge Status Indicator
• Input Power Good Indicator
• Automatic Trickle Charge for Battery Preconditioning
• Thermal Shutdown Protection
• Active Digital Thermal Loop Control
• Power On Reset and Soft Start
• Active Low Enable with Internal 200kΩ Resistor Pull-
Down to GND
• 3x4mm TDFN Package
Applications
• Digital Still Cameras
• Mobile Phones
• Personal Data Assistants (PDAs)
• Other Li-Ion Battery Powered Devices
USBIN
Voltage
Source
1μF
2.2μF
R1
ADPIN
1μF
R2
2.2μF
USB
USBCH
BAT
AAT3692
STAT
POK
ADP
ADPCH
NOBAT
EN
USBSET
ADPSET
TERM
GND
10μF
BATT+
BATT-
Battery
Pack
NOBAT
ON/OFF
RTERM
RADPSET
RUSBSET
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201895B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 270, 2012
1
1 page  
DATA SHEET
AAT3692
Dual Input 1.6A Linear Charger with 28V OVP in a 3x4 TDFN Package
Electrical Characteristics (continued)1
VADP = VUSB = 5V, TA = -25°C to +85°C, unless otherwise noted. Typical values are at TA = 25°C.
Symbol Description
Logic Control / Battery Protection
VEN#(H)
VEN#(L)
VSTAT
ISTAT
VPOK
IPOK
VNOBAT(H)
VNOBAT(L)
VBOVP
Input High Threshold
Input Low Threshold
Output Low Voltage
STAT Pin Current Sink Capability
POK Output Low Voltage
Current Sink Capability
No Battery Present Input High Threshold
No Battery Present Input Low Threshold
Battery Over-Voltage Protection Threshold
TRESPOV Over-Voltage Response Time
TOVPON OVP Switch OVP Release Turn-On Delay Time
TOVPSTARTON
TOVPR
TSHDN
OVP Switch Start Up Turn-On Delay Time
OVP Switch Turn-On Rise Time
Chip Thermal Shutdown Temperature
Conditions
Min Typ Max Units
VADP = 5V
1.2
0.4
STAT pin sinks 4mA
0.4
48
POK pin sinks 4mA
0.4
48
1.2
0.4
4.4
VADP, VUSB voltage step up signal from 6V
to 8V
0.5 1.0
VADP voltage step down signal from 8V to
6V, RLOAD = 10, CADPCH = 1μF
VADP voltage step up signal from 0V to
5V, RLOAD = 10, CADPCH = 1μF
RLOAD = 10, CADPCH = 1μF
Thermal Shutdown Threshold
5
130
100
140
Hysteresis
15
V
V
V
mA
V
mA
V
V
V
μs
μs
μs
μs
°C
1. The AAT3692 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and are assured by design, characterization and correla-
tion with statistical process controls.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201895B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 27, 2012
5
5 Page 
DATA SHEET
AAT3692
Dual Input 1.6A Linear Charger with 28V OVP in a 3x4 TDFN Package
reduction mode or digital thermal loop is triggered, the
charge profile is controlled as shown in Figure 1.
Battery charging commences only after the AAT3692
checks several conditions in order to maintain a safe
charging environment. The input supply must be above
the minimum operating voltage and the enable pin must
be low. When the battery is connected to the BAT pin and
the NOBAT pin indicates there is a battery connected,
the AAT3692 checks the condition of the battery and
determines which charging mode to apply. If the battery
voltage is below VMIN, then the device begins trickle
charging by charging at 10% of the programmed con-
stant current. For example, if the programmed current is
500mA, then the trickle charge current is 50mA. Trickle
charging is a safety precaution for a deeply discharged
cell and will also reduce the power dissipation in the
internal series pass MOSFET when the input-output volt-
age differential is at its highest. Trickle charging contin-
ues until the battery voltage reaches VMIN. At this point,
the AAT3692 begins constant current charging. The cur-
rent value for this mode is programmed by the external
resistors from the ADPSET and USBSET pin to ground.
Programmed current can be set from a minimum of
100mA up to a maximum of 1.6A for an ADP power
source, and from a minimum of 50mA up to a maximum
of 500mA for a USB power source. Constant current
charging continues until the battery voltage reaches the
voltage regulation point, VBAT_EOC. When the battery volt-
age reaches VBAT_EOC (typical 4.2V), the AAT3692 will
switch to constant voltage mode. In this mode, charge
current decreases until it is reduced to a certain percent-
age of the current programmed by the resistor between
TERM and ground. After the charge cycle is complete,
the AAT3692 turns off the series pass device and auto-
matically goes into standby mode. During this time, the
series pass device will block current in both directions,
therefore preventing the battery from discharging
through the IC.
The AAT3692 remains in standby mode until either the
battery terminal voltage drops below the VRCH threshold,
the charger EN pin is recycled, or the charging source is
reconnected. In all cases, the AAT3692 will monitor all
parameters and resume charging in the most appropri-
ate mode.
Over-Voltage Protection
In normal operation an OVP switch acts as a slew-rate
controlled load switch, connecting and disconnecting the
power supply from ADP to ADPCH and USB to USBCH. A
low-resistance MOSFET is used to minimize the voltage
drop between the voltage source and the charger and to
reduce the power dissipation. When the voltage on the
input exceeds the 7.2V (typical) voltage limit, the device
immediately turns off the internal OVP switch, discon-
necting the load from the abnormal voltage and prevent-
ing damage to any downstream components.
On initial power-up with low and battery present, if
VUSB/ADP < VUVLO (3V maximum), the OVP switch is held
off; if VUVLO < VUSB/ADP < 7.2V (typical), the OVP switch will
turn on after a 130μs typical internal delay; if VUSB/ADP
rises above 7.2V (typical), the OVP switch is turned off
after a 0.5μs typical internal delay.
Battery Charge Current
Regulated Current
Preconditioning
Trickle Charge
Phase
Constant Current
Charge Phase
I = Max CC
Constant Voltage
Charge Phase
Battery Voltage
Charge Complete Voltage
Charge Current
Battery Voltage
Constant Current Mode
Voltage Threshold
Termination Current
Set by RTERM
Trickle Charge Current
I = CC/10
Time
Figure 1: Charge Current vs. Battery Voltage Profile during Charging Phases.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201895B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 27, 2012
11
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet AAT3692.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AAT3690 | 1.0A USB Port/Adapter Lithium-Ion/Polymer Battery Charger |  AAT |
| AAT3691 | Dual Input 1.6A Linear Charger | Skyworks |
| AAT3692 | Dual Input 1.6A Linear Charger | Skyworks |
| AAT3696 | 1.6A Li-Ion Battery Charger | Skyworks |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |