|
|
PDF AAT2554 Data sheet ( Hoja de datos )
| Número de pieza | AAT2554 | |
| Descripción | Total Power Solution | |
| Fabricantes | AAT | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AAT2554 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
AAT2554
Total Power Solution for Portable Applications
General Description
Features
SystemPower™
The AAT2554 is a fully integrated 500mA battery
• Battery Charger:
charger, a 250mA step-down converter, and a
— Input Voltage Range: 4V to 6.5V
300mA low dropout (LDO) linear regulator. The
— Programmable Charging Current up to
input voltage range is 4V to 6.5V for the battery
500mA
charger and 2.7V to 5.5V for the step-down con-
— Highly Integrated Battery Charger
verter and linear regulator, making it ideal for
• Charging Device
applications operating with single-cell lithium-
• Reverse Blocking Diode
ion/polymer batteries.
• Step-Down Converter:
The battery charger is a complete constant cur-
rent/constant voltage linear charger. It offers an
integrated pass device, reverse blocking protec-
tion, high accuracy current and voltage regulation,
charge status, and charge termination. The charg-
ing current is programmable via external resistor
from 15mA to 500mA. In addition to these stan-
dard features, the device offers over-voltage, cur-
rent limit, and thermal protection.
— Input Voltage Range: 2.7V to 5.5V
— Output Voltage Range: 0.6V to VIN
— 250mA Output Current
— Up to 96% Efficiency
— 30µA Quiescent Current
— 1.5MHz Switching Frequency
— 100µs Start-Up Time
• Linear Regulator:
— 300mA Output Current
— Low Dropout: 400mV at 300mA
The step-down converter is a highly integrated
— Fast Line and Load Transient Response
converter operating at a 1.5MHz switching fre-
— High Accuracy: ±1.5%
quency, minimizing the size of external compo-
— 70µA Quiescent Current
nents while keeping switching losses low. It has
• Short-Circuit, Over-Temperature, and Current
www.DataSheet4U.com
independent input and enable pins. The output
Limit Protection
voltage ranges from 0.6V to the input voltage.
• TDFN34-16 Package
The AAT2554 linear regulator is designed for fast
• -40°C to +85°C Temperature Range
transient response and good power supply ripple
rejection. Designed for 300mA of load current,
it includes short-circuit protection and thermal
shutdown.
Applications
The AAT2554 is available in a Pb-free, thermally-
enhanced TDFN34-16 package and is rated over
the -40°C to +85°C temperature range.
Typical Application
• Bluetooth® Headsets
• Cellular Phones
• Handheld Instruments
• MP3 and Portable Music Players
• PDAs and Handheld Computers
• Portable Media Players
Adapter/USB Input
ADP
VINB
Enable
VOUTB
C OUTB
RFB1
RFB2
L= 3.0µH
VOUTA
COUTA
ENB
STAT
VINA
EN_BAT
ENA
AAT2554
LX
BAT
FB
OUTA
ISET
GND
COUT
R SET
BATT+
BATT-
Battery
Pack
2554.2007.01.1.2
1
1 page  
AAT2554
Total Power Solution for Portable Applications
Electrical Characteristics1
VINA = VOUT(NOM) + 1V for VOUT options greater than 1.5V. IOUT = 1mA, COUT = 2.2µF, CIN = 1µF, TA = -40°C to
+85°C, unless otherwise noted. Typical values are TA = 25°C.
Symbol Description
Linear Regulator
VOUT
Output Voltage Tolerance
VIN
VDO
ΔVOUT/
VOUT*ΔVIN
ΔVOUT(Line)
ΔVOUT(Load)
IOUT
ISC
IQ
ISHDN
Input Voltage
Dropout Voltage3
Line Regulation
Dynamic Line Regulation
Dynamic Load Regulation
Output Current
Short-Circuit Current
Quiescent Current
Shutdown Current
PSRR
Power Supply Rejection
Ratio
TSD
THYS
eN
TC
TEN_DLY
VEN(L)
VEN(H)
IEN
Over-Temperature
Shutdown Threshold
Over-Temperature
Shutdown Hysteresis
Output Noise
Output Voltage
Temperature Coefficient
Enable Time Delay
Enable Threshold Low
Enable Threshold High
Enable Input Current
Conditions
IOUTA = 1mA
to 300mA
TA = 25°C
TA = -40°C to +85°C
IOUTA = 300mA
VINA = VOUTA + 1 to 5.0V
IOUTA = 300mA, VINA = VOUTA + 1
to VOUTA + 2, TR/TF = 2µs
IOUTA = 1mA to 300mA, TR <5µs
VOUTA > 1.2V
VOUTA < 0.4V
VINA = 5V; ENA = VIN
VINA = 5V; ENA = 0V
1kHz
IOUTA =10mA
10kHz
1MHz
VENA = 5.5V
Min Typ Max Units
-1.5
-2.5
VOUT +
VDO2
400
0.09
1.5
2.5
5.5
600
%
V
mV
%/V
2.5
60
300
600
70 125
1.0
65
45
43
145
mV
mV
mA
mA
µA
µA
dB
°C
12 °C
250 µVRMS
22 ppm/°C
15
0.6
1.5
1.0
µs
V
V
µA
1. The AAT2554 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
by design, characterization, and correlation with statistical process controls.
2. VDO is defined as VIN - VOUT when VOUT is 98% of nominal.
3. For VOUT <2.3V, VDO = 2.5V - VOUT.
2554.2007.01.1.2
5
5 Page 
AAT2554
Total Power Solution for Portable Applications
Typical Characteristics – Battery Charger
Operating Current vs. Temperature
(RSET = 8.06kΩ)
550
500
450
400
350
300
-50
-25
0 25 50
Temperature (°C)
75 100
Preconditioning Threshold Voltage
vs. Temperature
(RSET = 8.06kΩ)
3.03
3.02
3.01
3
2.99
2.98
2.97
-50
-25
0
25 50 75 100
Temperature (°C)
Preconditioning Charge Current
vs. Temperature
(RSET = 8.06kΩ)
20.8
20.6
20.4
20.2
20.0
19.8
19.6
19.4
19.2
-50
-25
0
25 50 75
Temperature (°C)
100
4.18
4.16
4.14
4.12
4.10
4.08
4.06
4.04
4.02
-50
Recharging Threshold Voltage
vs. Temperature
(RSET = 8.06kΩ)
-25 0
25 50 75
Temperature (°C)
100
Preconditioning Charge Current
vs. Supply Voltage
60
RSET = 3.24kΩ
50
40
30 RSET = 5.36kΩ
20 RSET = 8.06kΩ
10 RSET = 16.2kΩ RSET = 31.6kΩ
0
4 4.2 4.4 4.6 4.8 5 5.2 5.4 5.6 5.8 6 6.2 6.4
VADP (V)
Sleep Mode Current vs. Supply Voltage
(RSET = 8.06kΩ)
800
700
85°C
600
500
400
300
25°C
-40°C
200
100
0
4 4.25 4.5 4.75 5 5.25 5.5 5.75 6 6.25 6.5
VADP (V)
2554.2007.01.1.2
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AAT2554.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AAT2550 | Total Power Solution | AAT |
| AAT2552 | Total Power Solution | AAT |
| AAT2554 | Total Power Solution | AAT |
| AAT2556 | Battery Charger and Step-Down Converter | AAT |
| 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 |