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PDF AAT3601 Data sheet ( Hoja de datos )
| Número de pieza | AAT3601 | |
| Descripción | Total Power Solution | |
| Fabricantes | Advanced Analogic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AAT3601 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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PRODUCT DATASHEET
AAT3601178
Total Power Solution for Portable Applications
General Description
The AAT3601 is a member of AnalogicTech’s Total Power
wwMwa.dnaatagsehmeeet4nut.cIoCmTM (TPMICTM) product family. It contains a
single-cell Lithium Ion/Polymer battery charger, a fully
integrated step-down converter and 5 low dropout (LDO)
regulators. The device also includes 2 load switches for
dynamic power path/sleep mode operation, making it
ideal for small portable short-range communications
enabled mobile devices and telephones.
The battery charger is a complete thermally regulated
constant current/constant voltage linear charger. It
includes an integrated pass device, reverse blocking pro-
tection, high accuracy current and voltage regulation,
charge status, and charge termination. The charging
current and the charge termination current as well as
recharge voltage are programmable with either an exter-
nal resistor and/or by a standard I2C interface.
The step-down DC/DC converter is integrated with inter-
nal compensation and operates at a switching frequency
of 1.5MHz, thus minimizing the size of external compo-
nents while keeping switching losses low and efficiency
greater than 95%. All LDO output voltages are program-
mable using the I2C interface.
The five LDOs offer 60dB power supply rejection ratio
(PSRR) and low noise operation making them suitable for
powering noise-sensitive loads. The LDOs and DC/DC
converter are separated into Permanent-Enabled (PE)
and Non-Permanent (NP) enabled supplies.
All six voltage regulators operate with low quiescent cur-
rent. The total no load current when the 3 PE LDOs are
enabled is only 200μA.
The device includes a watchdog timer input and two
reset outputs for the watchdog and LDO regulation. The
device also can be programmed through a standard I2C
interface.
The AAT3601 is available in a thermally enhanced low
profile 5x5x0.8mm 36-pin TQFN package.
Features
• Voltage Regulator VIN Range: 4.5V to 6V
• Complete Power Integration
▪ Integrated Load Switches to Power Converters from
AC Adapter or Battery Automatically
• Low Standby Current
▪ 200μA (typ) w/LDO1, LDO2 and LDO5 Active,
No Load
• One Step-Down Buck Converter (NP)
▪ 1.24V, 300mA Output
▪ 1.5MHz Switching Frequency
▪ Fast Turn-On Time (120μs typ)
• Five LDOs Programmable by I2C
▪ LDO1: 3.4V, 150mA (PE)
▪ LDO2: 3.4V, 300mA (NP)
▪ LDO3: 1.24V, 300mA (PE)
▪ LDO4: 1.85V, 300mA (NP)
▪ LDO5: 1.85V, 300mA (PE)
▪ PSRR: 60dB @10kHz
▪ Noise: 50μVrms
• One Battery Charger
▪ Digitized Thermal Regulation
▪ Charge Current Programming up to 1.4A
▪ Charge Current Termination Programming
▪ Automatic Trickle Charge for Battery Preconditioning
(2.8V Cutoff)
• Watchdog (WDI) Timer Input
▪ Two Reset (RSTIN, RSTLPW) Timer Outputs
• Separate Enable Pins for PE and NP Supplies
• Digital Programming of Major Parameters via I2C
• Over-Current Protection
• Over-Temperature Protection
• 5x5mm TQFN55-36 Package
Applications
• Digital Cameras
• GSM or CDMA Cellular Phones
• Handheld Instruments
• PDAs and Handheld Computers
• Portable Media Players
• Short-Range Communication Headsets
3601.2008.02.1.0
www.analogictech.com
1
1 page  
PRODUCT DATASHEET
AAT3601178
Total Power Solution for Portable Applications
Absolute Maximum Ratings1
TA = 25°C unless otherwise noted.
www.datasheet4u.com
Symbol
Description
VIN
Power and Logic Pins
TJ
Ts
TLEAD
Input Voltage, CHGIN, BAT
Maximum Rating
Operating Junction Temperature Range
Storage Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
Recommended Operating Conditions2
Symbol
θJA
PD
Description
Thermal Resistance
Maximum Power Dissipation
Value
-0.3 to 6.5
VIN + 0.3
-40 to 150
-65 to 150
300
Units
V
V
°C
°C
°C
Value
25
4
Units
°C/W
W
1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions
specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.
2. Thermal Resistance was measured with the AAT3601 device on the 4-layer FR4 evaluation board in a thermal oven. The amount of power dissipation which will cause the
thermal shutdown to activate will depend on the ambient temperature and the PC board layout ability to dissipate the heat. See Figures 13-16.
3601.2008.02.1.0
www.analogictech.com
5
5 Page 
PRODUCT DATASHEET
AAT3601178
Total Power Solution for Portable Applications
Typical Characteristics – Charger (continued)
Constant Current Mode Charge Current
www.datasheet4u.com vs. Temperature
(VBAT = 3.6V; RISET = 1.24kΩ)
900
VCHGIN = 6.0V
800
VCHGIN = 4.5V
700
VCHGIN = 5.5V
600
500 VCHGIN = 5.0V
400
300
-50
-25
0 25 50
Temperature (°C)
75 100
Constant Current Mode Charge Current
vs. Input Voltage
(RSET = 1.24kΩ)
900
880
860
840
820 VBAT = 3.3V
800
780
760 VBAT = 4.1V VBAT = 3.6V
740
720
700
4.5
4.75
5
5.25
5.5
5.75
6
CHGIN Voltage (V)
3601.2008.02.1.0
www.analogictech.com
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AAT3601.PDF ] | |
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