AAT4672ITP-T1 ANALOGICTECH [Advanced Analogic Technologies], AAT4672ITP-T1 Datasheet

no-image

AAT4672ITP-T1

Manufacturer Part Number
AAT4672ITP-T1
Description
Power Supply Selector Switch
Manufacturer
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet
1.AAT4672ITP-T1.pdf (24 pages)
General Description
The AAT4672 SmartSwitch™ is a member of AnalogicTech’s
Application Specific Power Management IC™ family. This
device is a dual input, single output power supply selec-
tor switch, designed to operate from USB ports, AC
adapter inputs, batteries, or any other power supply with
an input voltage up to 6V.
The AAT4672 connects the supply on the MAIN pin to the
OUT pin through a very low on-resistance power MOSFET
when the device is enabled, the MAIN pin voltage is
higher than the under voltage lockout (UVLO) threshold,
and MAIN pin voltage is greater than the AUX pin voltage
plus 200mV. The AUX pin connects to the OUT pin only
when the MAIN pin voltage drops 0.2V below the AUX pin
voltage and the AUX pin voltage is greater than the
UVLO threshold. If both input supplies (MAIN/AUX) are
below the UVLO threshold, then the OUT pin floats.
The two internal power switches are current limited and
the thresholds can be programmed through resistors on
the IMAIN and IAUX pins respectively. A power level
selection pin, PWRSEL, is provided to toggle the AUX
current limit between 100% and 20% of the current limit
setting programmed by the resistor on the IAUX pin. This
is particularly useful for USB applications where the
power supply can be powered by either a 500mA or a
100mA USB port.
The AAT4672 is available in a thermally enhanced,
space-saving, Pb-free 12-pin TSOPJW package and is
specified for operation over the -40°C to +85°C tem-
perature range.
Typical Application
SmartSwitch
4672.2008.04.1.0
TM
USB H/L select
AC Adapter
USB Port
Enable
AUX
PWRSEL
EN
MAIN
w w w . a n a l o g i c t e c h . c o m
Features
• Input Voltage Supply Range: 2.5V to 6V
• High Level of Integration:
• Break-Before-Make Switch-Over
• Shutdown Current < 1µA
• Thermal Protection
• TSOPJW-12 Package
Applications
• Bluetooth™ Headsets
• Cell Phones
• Digital Still Cameras
• MP3 Players
• Personal Data Assistants (PDAs)
▪
▪
▪
▪
▪
IMAIN
IAUX
GND
Reverse Blocking Diode
Current Sensing
Programmable Current Limiting
Automatic Power Supply Switching
Minimum Output Voltage Drop During Change-Over
OUT
Power Supply Selector Switch
R
IAUX
System Load
PRODUCT DATASHEET
R
IMAIN
AAT4672
1

Related parts for AAT4672ITP-T1

Image
Part Number
Description
Manufacturer
Datasheet
Request R
UZXYY
Part Number:
UZXYY
Description:
PCMCIA Current Limit Interface and Capacitor Charger
Manufacturer:
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet:
UZXYY.pdf (15 pages)
MCF5329DS
Part Number:
MCF5329DS
Description:
MCF5329 ColdFire Microprocessor Data Sheet
Manufacturer:
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet:
MCF5329DS.pdf (48 pages)
AAT3104IJQ-1-T1
Part Number:
AAT3104IJQ-1-T1
Description:
Low Cost 1x/2x 4 Channel Charge Pump WLED Driver
Manufacturer:
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet:
AAT3104IJQ-1-T1.pdf (15 pages)
AAT3110IGU-5-T1
Part Number:
AAT3110IGU-5-T1
Description:
MicroPower™ Regulated Charge Pump
Manufacturer:
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet:
AAT3110IGU-5-T1.pdf (18 pages)
AAT3111IJS-33-T1
Part Number:
AAT3111IJS-33-T1
Description:
MicroPower™ Regulated Charge Pump
Manufacturer:
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet:
AAT3111IJS-33-T1.pdf (16 pages)
AAT3112_07
Part Number:
AAT3112_07
Description:
500mA High Efficiency Charge Pump for White LED Flash Applications
Manufacturer:
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet:
AAT3112_07.pdf (16 pages)
AAT3113ITP
Part Number:
AAT3113ITP
Description:
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
Manufacturer:
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet:
AAT3113ITP.pdf (15 pages)
AAT3119_07
Part Number:
AAT3119_07
Description:
High Efficiency 2X Charge Pump
Manufacturer:
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet:
AAT3119_07.pdf (18 pages)
AAT3122_05
Part Number:
AAT3122_05
Description:
High Efficiency 1X/1.5X Fractional Charge Pump for White LED Applications
Manufacturer:
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet:
AAT3122_05.pdf (12 pages)
AAT3128_08
Part Number:
AAT3128_08
Description:
RGB LED Fashion Lighting Controller
Manufacturer:
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet:
AAT3128_08.pdf (12 pages)
AAT3129_07
Part Number:
AAT3129_07
Description:
High Efficiency 1X/1.5X/2X Charge Pump for RGB Color LED Applications
Manufacturer:
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet:
AAT3129_07.pdf (15 pages)
AAT3131_08
Part Number:
AAT3131_08
Description:
High Efficiency 1X/1.5X Fractional Charge Pump for White LED Applications
Manufacturer:
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet:
AAT3131_08.pdf (14 pages)
AAT3140_07
Part Number:
AAT3140_07
Description:
High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications
Manufacturer:
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet:
AAT3140_07.pdf (16 pages)
AAT3151B_08
Part Number:
AAT3151B_08
Description:
High Efficiency 1X/1.5X Charge Pump For White LED Applications
Manufacturer:
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet:
AAT3151B_08.pdf (13 pages)
AAT3152_05
Part Number:
AAT3152_05
Description:
High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications
Manufacturer:
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet:
AAT3152_05.pdf (12 pages)

AAT4672ITP-T1 Summary of contents

Page 1

SmartSwitch TM General Description The AAT4672 SmartSwitch™ member of AnalogicTech’s Application Specific Power Management IC™ family. This device is a dual input, single output power supply selec- tor switch, designed to operate from USB ports, AC adapter inputs, ...

Page 2

SmartSwitch SmartSwitch TM TM Pin Descriptions Pin Number Name 1, 2 MAIN 3, 4 AUX GND 8 PWRSEL 9 IAUX 10 IMAIN 11, 12 OUT Pin Configuration 2 2 Type Function I Power supply 1 input. ...

Page 3

SmartSwitch SmartSwitch TM TM Absolute Maximum Ratings Symbol Description V [MAIN, AUX] to GND N V [OUT, EN, IMAIN, IAUX, PWRSEL] to GND X T Maximum Soldering Temperature (at Leads) LEAD I Maximum Output Current OUT Thermal Information 2 Symbol ...

Page 4

SmartSwitch SmartSwitch TM TM Electrical Characteristics -40 to +85°C, unless otherwise noted. Typical values are at T MAIN/AUX A Symbol Description Operation V MAIN Operating Voltage Range MAIN V AUX Operating Voltage Range AUX MAIN ...

Page 5

SmartSwitch SmartSwitch TM TM Typical Characteristics I Shutdown Current vs. Temperature MAIN 0.8 0.6 0 3.6V -0.2 MAIN -0.4 -40 - Temperature (°C) I Operation Current vs. Temperature MAIN (I = 0A) OUT ...

Page 6

SmartSwitch SmartSwitch TM TM Typical Characteristics I Sleep Current vs. V MAIN MAIN (V = 6.5V) AUX 2.5 2 85°C 25°C 1.5 1 -40°C 0.5 0 2.5 3 3.5 4 4.5 V Voltage (V) MAIN Current Limit vs. R IMAIN/IAUX ...

Page 7

SmartSwitch SmartSwitch TM TM Typical Characteristics Thermal Shutdown Response (V = 5V) MAIN (2V/div OUT (2V/div OUT 0A (2A/div) Time (40ms/div) 4672.2008.04.1.0 4672.2008.04.1.0 Power Supply Selector Switch Power Supply Selector Switch w w ...

Page 8

SmartSwitch SmartSwitch TM TM Functional Block Diagram MAIN IMAIN PWRSEL IAUX AUX Truth Table Y = Yes No don’t care. V > UVLO V MAIN Functional Description To power the OUT ...

Page 9

SmartSwitch TM input current surges from low impedance sources such as batteries in portable devices. Output Capacitor A 1µF or greater capacitor is required between OUT and GND ( with the input capacitor, there is no spe- OUT ...

Page 10

SmartSwitch TM T SD(MIN Eq MAX DS(ON)(MAX the minimum temperature required to activate SD(MIN) the AAT4672 over-temperature protection (thermal shutdown). With typical specification of 140°C, 125° safe minimum value to use. For ...

Page 11

SmartSwitch SmartSwitch TM TM Evaluation Board Schematic C1 4.7µF MAIN AUX C2 4.7µ Header 2 R1 100K Figure 1: AAT4672 Evaluation Board Schematic. Evaluation Board Layout Figure 2: AAT4672 Evaluation Board Top Side Layout. 4672.2008.04.1.0 4672.2008.04.1.0 ...

Page 12

... PRODUCT DATASHEET PRODUCT DATASHEET AAT4672 AAT4672 Power Supply Selector Switch Power Supply Selector Switch Part Number (Tape and Reel) AAT4672ITP-T1 0.04 REF 0.45 ± 0.15 2.75 ± 0.25 4672.2008.04.1.0 4672.2008.04.1.0 2 ...

Page 13

SmartSwitch TM General Description The AAT4672 SmartSwitch™ member of AnalogicTech’s Application Specific Power Management IC™ family. This device is a dual input, single output power supply selec- tor switch, designed to operate from USB ports, AC adapter inputs, ...

Page 14

SmartSwitch SmartSwitch TM TM Pin Descriptions Pin Number Name 1, 2 MAIN 3, 4 AUX GND 8 PWRSEL 9 IAUX 10 IMAIN 11, 12 OUT Pin Configuration 2 2 Type Function I Power supply 1 input. ...

Page 15

SmartSwitch SmartSwitch TM TM Absolute Maximum Ratings Symbol Description V [MAIN, AUX] to GND N V [OUT, EN, IMAIN, IAUX, PWRSEL] to GND X T Maximum Soldering Temperature (at Leads) LEAD I Maximum Output Current OUT Thermal Information 2 Symbol ...

Page 16

SmartSwitch SmartSwitch TM TM Electrical Characteristics -40 to +85°C, unless otherwise noted. Typical values are at T MAIN/AUX A Symbol Description Operation V MAIN Operating Voltage Range MAIN V AUX Operating Voltage Range AUX MAIN ...

Page 17

SmartSwitch SmartSwitch TM TM Typical Characteristics I Shutdown Current vs. Temperature MAIN 0.8 0.6 0 3.6V -0.2 MAIN -0.4 -40 - Temperature (°C) I Operation Current vs. Temperature MAIN (I = 0A) OUT ...

Page 18

SmartSwitch SmartSwitch TM TM Typical Characteristics I Sleep Current vs. V MAIN MAIN (V = 6.5V) AUX 2.5 2 85°C 25°C 1.5 1 -40°C 0.5 0 2.5 3 3.5 4 4.5 V Voltage (V) MAIN Current Limit vs. R IMAIN/IAUX ...

Page 19

SmartSwitch SmartSwitch TM TM Typical Characteristics Thermal Shutdown Response (V = 5V) MAIN (2V/div OUT (2V/div OUT 0A (2A/div) Time (40ms/div) 4672.2008.04.1.0 4672.2008.04.1.0 Power Supply Selector Switch Power Supply Selector Switch w w ...

Page 20

SmartSwitch SmartSwitch TM TM Functional Block Diagram MAIN IMAIN PWRSEL IAUX AUX Truth Table Y = Yes No don’t care. V > UVLO V MAIN Functional Description To power the OUT ...

Page 21

SmartSwitch TM input current surges from low impedance sources such as batteries in portable devices. Output Capacitor A 1µF or greater capacitor is required between OUT and GND ( with the input capacitor, there is no spe- OUT ...

Page 22

SmartSwitch TM T SD(MIN Eq MAX DS(ON)(MAX the minimum temperature required to activate SD(MIN) the AAT4672 over-temperature protection (thermal shutdown). With typical specification of 140°C, 125° safe minimum value to use. For ...

Page 23

SmartSwitch SmartSwitch TM TM Evaluation Board Schematic C1 4.7µF MAIN AUX C2 4.7µ Header 2 R1 100K Figure 1: AAT4672 Evaluation Board Schematic. Evaluation Board Layout Figure 2: AAT4672 Evaluation Board Top Side Layout. 4672.2008.04.1.0 4672.2008.04.1.0 ...

Page 24

... PRODUCT DATASHEET PRODUCT DATASHEET AAT4672 AAT4672 Power Supply Selector Switch Power Supply Selector Switch Part Number (Tape and Reel) AAT4672ITP-T1 0.04 REF 0.45 ± 0.15 2.75 ± 0.25 4672.2008.04.1.0 4672.2008.04.1.0 2 ...

Related keywords