|
|
PDF AAT3698 Data sheet ( Hoja de datos )
| Número de pieza | AAT3698 | |
| Descripción | 1.6A Linear Li-Ion Battery Charger | |
| Fabricantes | Skyworks | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AAT3698 (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
|
No Preview Available !
DATA SHEET
AAT3698
1.6A Linear Li-Ion Battery Charger in a 3x3 TDFN Package
General Description
The AAT3698-1/-2 BatteryManager™ is a single-cell lithi-
um-ion (Li-Ion)/Li-Polymer battery charger IC designed
to operate from a USB port or AC adapter with an input
voltage of up to 7.0V. For increased safety, the AAT3698-
1/-2 also includes over-voltage input protection (OVP)
up to 28V.
The AAT3698-1/-2 precisely regulates battery voltage
for 4.2V Li-Ion/Polymer battery cells through a low
RDS(ON) switch. The charging current can be set by an
external resistor up to 1.6A. If an over-voltage condition
occurs from the input, the series switch quickly opens
and a fault flag is activated, preventing damage to the
battery and the charging circuitry.
Other fault conditions are monitored in real time. In case
of an over-current, battery over-voltage, short circuit, or
over-temperature failure, the device will automatically
shut down, thus protecting the charging device, control
system, and the battery under charge. A status monitor-
ing output pin (STAT) is provided to indicate charging
activity. This open drain output pin can be used to drive
an external LED as a charging indicator.
The AAT3698-1/-2 also includes a 5.0V LDO linear regu-
lator with over-voltage protection that can supply loads
of up to 50mA.
The AAT3698-1/-2 is available in the Pb-free, thermally
enhanced, space-saving 3x3mm TDFN33-14 package and
is rated over the -40°C to +85°C temperature range.
Typical Application
Features
• USB or AC Adapter System Power Charger
• 3.0V ~ 7.0V Input Voltage Range
• Fast Over-Voltage Protection Turn Off
• OVP Trip Threshold: 7.25V (typ)
• High Level of Integration with Internal:
▪ Power Device
▪ Reverse Current Blocking
▪ Current Sensing
• 5V/50mA LDO Output
• Programmable Fast Charge Current from 50mA to
1.6A
• Programmable Charge Termination Current
• Charge Status Indicator
• Power OK Indicator
• Battery Absence Detection Input Pin
• Automatic Termination and Recharge Sequencing
(AAT3698-1 Only)
• Automatic Trickle Charge For Battery Pre-Conditioning
• Emergency Thermal Shutdown Protection
• Digitally Controlled Thermal Loop Regulation
• Active Low Enable with Internal 200kΩ Pull-Down
Resistor
• Output for Auto-Booting
• 14-pin 3x3mm TDFN Package
Applications
• Bluetooth™ Headsets, Headphones, Accessories
• Digital Still Cameras
• Mobile Telephones
• Personal Data Assistants (PDAs)
• MP3 Players
• Other Lithium-Ion/Polymer Battery-Powered Devices
VIN
C1
1μF
C2
1μF
ON/OFF
5V
R1 R2
IN
NOBAT
INCHR
BAT
C4
ABI 1μF
ABO
EN AAT3698-x IC
LDOOUT
C3
1μF
Battery Pack
LDOOUT
STAT
POK
ISET
TERM
GND
R3 R4
10.9mm
U1
C1
C2, C3
C4
R1
R2
R3
R4
AAT3698-x
GRM31MR71H105KA88
GRM188R61A225KE34
GRM21BR71C105KA01L
1.5kΩ, 5%, 1/4W, 0603
1.5kΩ, 5%, 1/4W, 0603
13.3kΩ, 1%, 1/4W, 0603
1.58kΩ, 1%, 1/4W, 0603
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201902B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 27, 2012
1
1 page  
DATA SHEET
AAT3698
1.6A Linear Li-Ion Battery Charger in a 3x3 TDFN Package
Electrical Characteristics (continued)1
VIN = 5V, RSET = 3.16kΩ, VENB = VNOBAT = 0V, CIN = 1μF, CINCHR = 1μF, CBAT = 1μF, CLDOOUT = 1μF, TERM = ABI = IC = open,
TA = -40 to +85°C, unless otherwise noted. Typical values are at TA = 25°C.
Symbol Description
Logic Control / Battery Protection
VEN(H)
VEN(L)
REN
VNOBAT(H)
VNOBAT(L)
RNOBAT
VABI(H)
VABI(L)
RABI
VABO(H)
VABO(L)
VSTAT
ISTAT_OFF
VPOK
IPOK_OFF
Input High Threshold
Input Low Threshold
Input Pull Down Resistor
Input High Threshold
Input Low Threshold
Input Pull Up Resistor
Input High Threshold
Input Low Threshold
Input Pull Down Resistor
Output High Voltage
Output Low Voltage
Output Low Voltage
STAT Pin Leakage Current
Output Low Voltage
POK Pin Leakage Current
TOVPRES
Over-Voltage Response Time
TOVPON
OVP Switch OVP Release Turn-On
Delay Time
TDLY_POK
POK OFF Delay Time from Over-
Voltage
TREDLY_POK
POK ON Delay Time from Over-
Voltage
TOVPSTARTON
OVP Switch Startup Turn-On Delay
Time
Thermal Protection
THREG
Thermal Loop Regulation
THSHDN
Chip Thermal Shutdown
Temperature
5V LDO
VLDOOUT
LDOOUT Voltage Tolerance
VDO
IOUT_LIM
VLDOOUT_LR
VLDOOUT_DM LR
VLDOOUT_DM LD
Dropout Voltage from IN
LDO Output Current Limit
Line Regulation
Dynamic Line Regulation
Dynamic Load Regulation
Conditions
VIN = 0V, VBAT = 4.2V
VIN = 0V, VBAT = 4.2V
VBAT = 4.2V, IABO = -5mA (sourcing)
VBAT = 4.2V, IABO = 5mA (sinking)
VSTAT = 5.5V, VEN = 5V
IPOK = 5mA
VPOK = 5.5V, VIN = 7V
VIN voltage step up from 6V to 8V, RLOAD =
100Ω, CINCHR = 1μF
VIN voltage step down from 8V to 6V, RLOAD =
100Ω, CINCHR = 1μF
VIN voltage step up from 6V to 8V, RLOAD =
100Ω, CINCHR = 1μF
VIN voltage step down from 8V to 6V, RLOAD =
100Ω, CINCHR = 1μF
VIN voltage step up from 0V to 5V, RLOAD =
100Ω, CINCHR = 1μF
Threshold
Hysteresis
VIN = 5.5V, ILDOOUT
= 0mA to 30mA
TA = 25°C
TA = -40 to +85°C
IOUT = 30mA, VIN = 5.0V
VIN = 5.5V, VLDOOUT = 4.5V
VIN = 5.4V to 6.4V, ILDOOUT = 30mA
IOUT = 30mA, VIN = 5.4V to 6.4V, TR/TF = 2μs
IOUT = 1mA to 30mA, TR = <5μs, VIN = 5.5V
Min
1.2
1.2
1.2
VBAT – 1V
4.9
4.75
55
Typ
200
1600
200
0.1
60
0.1
1.5
220
110
140
15
5.0
5.0
160
90
200
60
Max
0.4
0.4
0.4
0.4
0.4
1
0.4
1
5.1
5.25
300
125
10
Units
V
V
k
V
V
k
V
V
k
V
V
V
μA
V
μA
μs
μs
μs
μs
μs
ºC
ºC
V
mV
mA
mV
mV
mV
1. The AAT3698-1/-2 is guaranteed to meet performance specifications over the -40 to +85°C operating temperature range and is assured by design, characterization and cor-
relation with statistical process controls.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201902B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 27, 2012
5
5 Page 
DATA SHEET
AAT3698
1.6A Linear Li-Ion Battery Charger in a 3x3 TDFN Package
Functional Block Diagram
OVP
Switch
IN
OVP
Control
INCHR
TERM
ISET
EN
200kΩ
POK
POK
Current
Sense
UVLO
OVP Flag
Reverse
Blocking
5V LDO
1600kΩ
Charge
Control
BATS
BAT
POK
200kΩ
+ IN
- BAT GND
BAT
LDOOUT
NOBAT
ABO
ABI
STAT
Functional Description
The AAT3698-1/-2 is a high performance battery charger
IC which is designed to charge single-cell Lithium-Ion or
Polymer batteries with up to 1.6A of current from an
external power source. It is a stand-alone charging solu-
tion requiring minimum input components. The AAT3698-
1/-2 also includes a fast turn-off over-voltage protection
(OVP) circuit with +28V which consists of a low-resis-
tance MOSFET in series with the charge control circuit.
The AAT3698-1/-2 also features under-voltage lockout
protection, power OK, charge status monitoring, and a
5.0V LDO with 50mA output through the OVP switch.
Battery Charging Profile
Figure 1 illustrates the entire battery charging operation
profile, which consists of three (AAT3698-2) or four
(AAT3698-1) phases:
1. Preconditioning (Trickle) Charge
2. Constant Current Charge (CC)
3. Constant Voltage Charge (CV)
4. Automatic Recharge (AAT3698-1 only)
Preconditioning Charge
Battery charging commences only after the AAT3698-1/-
2 checks several conditions in order to maintain a safe
charging environment. The input supply must be above
the minimum operating voltage (VMIN) or under-voltage
lockout threshold (VUVLO) and the enable pin must be low
for the charging sequence to begin. When these condi-
tions have been met and a battery is connected to the
BAT pin, the AAT3698-1/-2 checks the state of the bat-
tery and determines which charging mode to apply. If
the battery voltage is below the preconditioning voltage
threshold (VMIN), then the AAT3698-1/-2 begins precon-
ditioning the cell (trickle charging) by charging at 10%
of the programmed constant current. For example, if the
programmed fast charge current is 1000mA, then the
preconditioning (trickle) charge current is 100mA.
Battery cell preconditioning is a safety precaution for
deeply discharged cells and will also reduce the power
dissipation in the internal series pass transistor when the
voltage across the device is at greatest potential.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201902B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 27, 2012
11
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet AAT3698.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 |