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PDF AAT4650IHS-B1 Data sheet ( Hoja de datos )
| Número de pieza | AAT4650IHS-B1 | |
| Descripción | 5V/3V PC Card Power Switch | |
| Fabricantes | Advanced Analogic Technologies | |
| Logotipo |  |
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General Description
The AAT4650 SmartSwitch™ is a single channel PC
Card (PCMCIA) power switch. It is used to select
between two different voltage inputs, each between
2.7V and 5.5V. An internal switch powers the cir-
cuitry from whichever input voltage is higher. The
device's output, VCC, is slew rate controlled and cur-
rent limited, in compliance with PC Card specifica-
tions. The current limit response time to a short cir-
cuit is typically 1µs. The internal P-Channel MOS-
FET switches are configured to break before make,
that is, both switches cannot be closed at the same
time. Controlled by a 2 bit parallel interface, the four
states for VCC are VCC5, VCC3, Hi-impedance, or
Ground. When in the ground state, VCC is pulled to
ground by a 5kΩ resistor. An open drain FAULT out-
put is asserted during over-current conditions.
During power up slewing, FAULT also signals that
VCC is out of tolerance. An internal over temperature
sensor forces VCC to a high impedance state when
an over-temperature condition exists. Quiescent
current is typically a low 15µA, as long as ICC is less
than approximately 500mA. Above this load current,
the quiescent current increases to 200µA.
The AAT4650 is available in 8-pin SOP and
TSSOP packages specified over -40 to 85°C.
AAT4650
5V/3V PC Card Power Switch
Features
SmartSwitch™
• 2.7V to 5.5V Input voltage range
• 85mΩ (5V) typical RDS(ON)
• Low quiescent current 15µA (typ)
• Reverse-blocking switches
• Short-circuit protection
• Over-temperature protection
• FAULT flag output
• Temp range -40 to 85°C
• 8 pin SOP or TSSOP package
Applications
• Notebook Computer
• PDA, Subnotebook
• Power Supply Multiplexer Circuit
Typical Application
VCC5
VCC3
CIN5
1µF
GND
CTL1
CTL0
FAULT
CIN3
1µF
8 VCC5
5 VCC3
3 CTL1 AAT4650
2 CTL0
4 FAULT
1 GND
VCC 6,7
COUT
0.1µF
VCC
GND
4650.2001.10.0.93
1
1 page  
Typical Characteristics
(Unless otherwise noted, TA = 25°C)
Quiescent Current vs. Temperature
(ICC5)
30
25 VCC3=3V
20 VCC5=5V
15
10
5
0
-40
-20
0
CTL0=5V
CTL1=0V
20 40 60 80
Temperature (C)
100 120
AAT4650
5V/3V PC Card Power Switch
Current Limit VCC=VCC3
2
1.5 Ta=25C
1
0.5
0
0 0.5 1 1.5 2 2.5
Vout
3
Current Limit VCC=VCC5
2
Ta=25C
1.5
1
0.5
0
01
2
3
Vout
4
5
6
Off-Switch Current vs. Temperature (ICC3)
1.0000
0.1000
0.0100
VCC3=3V
VCC5=5V
CTL1=0V
CTL0=0V
0.0010
0.0001
0.0000
-40
-20
0 20 40 60 80 100 120
Temperature (C)
Off-Switch Current vs. Temperature ICC5
1.0000
0.1000
0.0100
VCC5=5V
VCC3=3V
CTL1=0V
CTL0=0V
0.0010
0.0001
0.0000
-40
-20
0 20 40 60 80
Temperature (C)
100 120
4650.2001.10.0.93
Rdson vs. Temperature
120.0
110.0
100.0 VCC=VCC3=3.0V
90.0
80.0 VCC=VCC5=5.0V
70.0
60.0
-40
-20
0 20 40 60 80
Temperature (C)
100
120
5
5 Page 
AAT4650
5V/3V PC Card Power Switch
Ordering Information
Package
SO-8
TSSOP-8
Marking
Part Number
Bulk Tape and Reel
AAT4650IAS-B1 AAT4650IAS-T1
AAT4650IHS-B1 AAT4650IHS-T1
Package Information
SOP-8
EH
D
7 (4x)
b
y
A
A2
e A1
Q
L
Dim Millimeters
Min Max
Inches
Min Max
A 1.35 1.75 0.053 0.069
A1 0.10 0.25 0.004 0.010
A2 1.45
0.057
B 0.33 0.51 0.013 0.020
C 0.19 0.25 0.007 0.010
D 4.80 5.00 0.189 0.197
E 3.80 4.00 0.150 0.157
e 1.27
0.050
H 5.80 6.20 0.228 0.244
L 0.40 1.27 0.016 0.050
Y 0.00 0.10 0.000 0.004
c θ1 0° 8° 0° 8°
Note:
1. PACKAGE BODY SIZES EXCLUDE MOLD FLASH
PROTRUSIONS OR GATE BURRS.
2. TOLERANCE 0.1000mm (4mil) UNLESS
OTHERWISE SPECIFIED
3. COPLANARITY: 0.1000mm
4. DIMENSION L IS MEASURED IN GAGE PLANE.
5. CONTROLLING DIMENSION IS MILLIMETER;
CONVERTED INCH DIMENSIONS ARE NOT
NECESSARILY EXACT.
4650.2001.10.0.93
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet AAT4650IHS-B1.PDF ] | |
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