AAT4625 Advanced Analog Technology, Inc., AAT4625 Datasheet

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AAT4625

Manufacturer Part Number
AAT4625
Description
USB Single-Channel Power Switch
Manufacturer
Advanced Analog Technology, Inc.
Datasheet

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General Description
The AAT4625 SmartSwitch is part of AnalogicTech's
Application Specific Power MOSFET™ (ASPM™)
product family. It is a 1.0A current limited P-chan-
nel MOSFET power switch designed for high-side
load-switching applications. This switch operates
with inputs ranging from 2.7V to 5.5V, making it
ideal for both 3V and 5V systems. An integrated
current-limiting circuit protects the input supply
against large changes in load current which may
cause the supply to fall out of regulation.
AAT4625 is also protected from thermal overload
which limits power dissipation and junction temper-
atures. The current limit threshold is factory pro-
grammed at 1.5A, with a maximum of 2.0A. The
quiescent supply current is typically a low 16µA. In
shutdown mode, the supply current decreases to
less than 1µA.
The AAT4625 is available in Pb-free, 8-pin SOP,
TSSOP, or MSOP packages, and is specified over
the -40°C to +85°C temperature range.
The AAT4600 series is a family of adjustable and
fixed SmartSwitch products with a range of current
handling
adjustable current limit (AAT4601) or fixed current
limit (AAT4625) as well as dual versions with fixed
current limit (AAT4626) are available.
Typical Application
4625.2006.04.1.2
V
GND
CC
capabilities.
5.0V
0.1μF
100k
EN (EN)
Single
versions
7
2
1
IN
FLG
EN (EN)
with
The
AAT4625
3
USB Single-Channel Power Switch
Features
Applications
UL Recognized Component
Compliant with USB 1.1 and 2.0 Specifications
2.7V to 5.5V Input Voltage Range
1.0A Minimum Continuous Current
2.0A Maximum Current Limit
60mΩ Typical R
Low Quiescent Current:
— Typically 16µA
— 1µA Maximum with Switch Off
Thermal Shutdown
Slew Rate Limited Turn On
Fault Flag with 10ms Blanking
Under-Voltage Lockout (UVLO)
Temperature Range: -40°C to +85°C
UL Approved—File No. E217765
8-Pin SOP, TSSOP, or MSOP Package
General Purpose Power Switching
Hot Swap Supplies
Notebook Computers
USB Ports and Peripherals
OUT
OUT
6
8
DS(ON)
SmartSwitch
120μF
OUTPUT
AAT4625
GND
1

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AAT4625 Summary of contents

Page 1

... The AAT4600 series is a family of adjustable and fixed SmartSwitch products with a range of current handling capabilities. Single adjustable current limit (AAT4601) or fixed current limit (AAT4625) as well as dual versions with fixed current limit (AAT4626) are available. Typical Application V 5.0V CC 100k EN (EN) 0.1μ ...

Page 2

... Switch output: These pins are the P-channel MOSFET drain connection Supply input: This pin is the P-channel MOSFET source connection. Also supplies the IC's internal circuitry. Pin Configuration 2 USB Single-Channel Power Switch SOP-8 TSSOP-8 MSOP-8 (Top View) EN (EN) OUT FLG 2 7 OUT GND AAT4625 4625.2006.04.1.2 ...

Page 3

... Only one Absolute Maximum Rating should be applied at any one time. 2. Mounted on an FR4 printed circuit board. 4625.2006.04.1.2 USB Single-Channel Power Switch 1 SOP-8 TSSOP-8 MSOP-8 SOP-8 TSSOP-8 MSOP-8 AAT4625 Value Units - 0.3 ...

Page 4

... Inactive 5.5V OUT Ramped Load Applied to Enable Output, V < 4.0V OUT T Increasing J T Decreasing 5V 1mA 5.5V FLG V = Increasing, 1% Hysteresis IN AAT4625 = 25°C; bold values designate A Min Typ Max Units 2.7 5 µA 1 µA 2.4 V 0.8 0.01 1 µ 100 mΩ 70 115 0. ...

Page 5

... Off-Supply Current vs. Temperature 1.0000 0.1000 0.0100 4 5 0.0010 -40 Turn On/Off Response with 10Ω 1μF Load EN 5V/div FAULT 5V/div V OUT 2V/div I IN 200mA/div 80 100 120 AAT4625 Quiescent Current Input Voltage (V) - 100 Temperature (°C) Time (100μs/div) 6 120 5 ...

Page 6

... USB Single-Channel Power Switch EN 5V/div FAULT 5V/div V OUT 1V/div I IN 500mA/div Short-Circuit Through 0.6Ω 100 120 AAT4625 Thermal Shutdown Response Time (50ms/div) Input Voltage Output Current Output Voltage Time (μs) 4625.2006.04.1 ...

Page 7

... The EN function has logic level thresholds that . LIM(MIN) allow the AAT4625 to be TTL compatible and may also be controlled by 2.5V to 5.0V CMOS circuits. The voltage level on either EN or FAULT should not exceed the input supply level present on the IN pin. ...

Page 8

... AAT4625. For example AAT4625 is used in a circuit that oper- ates from a 5V power supply with poor step load A(MAX) response, turning on the load switch could cause the ...

Page 9

... The EN threshold voltage is set to allow the AAT4625 to be controlled by 5V TTL levels, as well as CMOS-compatible levels ranging from 2.5V to 5V. The EN function control voltage level should not exceed the input supply level applied to the IN pin. ...

Page 10

... A host power back plane or hot-plug receptacle may be sensitive to short duration, high power surges. The AAT4625 will turn linear ramping fashion and regulate the inrush current within the specified current limit for the device. The ...

Page 11

... C BULK 4.50V to 5.25V GND (5mV) Figure 3: Summary of Typical Circuit Voltage Drops Caused by AAT4625 Circuit Components and PCB Trace Resistance. Evaluation Board Layout The AAT4625 evaluation layout (shown in Figures 4, 5, and 6) follows the recommend printed circuit board layout procedures and can be used as an Figure 4: Evaluation Board Component Side Layout ...

Page 12

... GND OUT 1μ 100kΩ 3.3V USB Controller AAT4625 VIN EN OUT ON/OFF Over-Current FLG Flag GND GND OUT 1μF NC AAT4625 Ferrite Beads V BUS D+ C OUT2 120μF D- GND DATA V cc 5.0V USB Port Ferrite Beads IN 120μF 0.1μF Data USB Port Ferrite Beads IN 120μ ...

Page 13

... Sample stock is generally held on part numbers listed in BOLD. 4625.2006.04.1.2 USB Single-Channel Power Switch Marking Part Number (Tape and Reel) 1 4625-1 AAT4625IAS-1-T1 4625 AAT4625IAS-T1 4625-1 AAT4625IHS-1-T1 4625 AAT4625IHS-T1 DDXYY AAT4625IKS-1-T1 DCXYY AAT4625IKS-T1 SOP-8 0.375 ± 0.125 45° 0.235 ± 0.045 0.825 ± 0.445 AAT4625 2 13 ...

Page 14

... All dimensions in millimeters. 14 USB Single-Channel Power Switch TSSOP-8 12° REF × 4 3.00 ± 0.10 0.65 BSC 0.10 ± 0.05 12° DETAIL A AAT4625 0.145 ± 0.055 4° ± 4° 0.60 ± 0.15 1.00 REF 4625.2006.04.1.2 ...

Page 15

... Advanced Analogic Technologies, Inc. 830 E. Arques Avenue, Sunnyvale, CA 94085 Phone (408) 737-4600 Fax (408) 737-4611 4625.2006.04.1.2 USB Single-Channel Power Switch MSOP-8 1.95 BSC 0.254 BSC 3.00 ± 0.10 10° ± 5° 0.65 BSC 0.30 ± 0.08 AAT4625 4° ± 4° 0.60 ± 0.20 0.155 ± 0.075 15 ...

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