NOT RECOMMENDED FOR NEW
DESIGN - USE AP2141D/AP2151D
Data Sheet
500mA High-side Power Distribution Switch with Enable and Flag
AP2805
General Description
The AP2805 is an integrated high-side power switch
that consists of N-Channel MOSFET, charge pump,
over current & temperature and other related protection
circuits. The switch’s low RDS (ON), 60mΩ, design
easily to meet USB voltage drop requirements. It
includes soft-start to limit inrush current, over-current
protection, load short protection with fold-back, and
thermal shutdown to avoid switch failure during hot
plug-in. Under voltage lockout (UVLO) function is
used to ensure the device remain off unless there is a
valid input voltage present. A Flag output is available
to indicate fault conditions to the local USB
controller.
The AP2805 is available in standard packages of
SOIC-8 and MSOP-8.
Features
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Low MOSFET on Resistance:
60mΩ@V
IN
=5.0V
Compliant to USB Specifications
Operating Voltage Range: 2.7V to 5.5V
Low Supply Current: 60µA (Typ.)
Low Shutdown Current: 1.0µA (Max)
Guarantee 0.5A Continuous Load
Current Limit: 0.7A (Min), 1.4A (Max)
Under-voltage Lockout
Logic Level Enable Pin: Available in
Active-high or Active-low Version
Over-current Protection
Over Temperature Protection
Load Short Protection with Fold-back
No Reverse Current When Power Off
Deglitched Flag Output with Open Drain
With Output Shutdown Pull-low Resistor for
A/C Versions
UL Approved (File No. E339337)
Nemko CB Scheme IEC60950-1, Ref. Certif
No. NO67288
N
O
T
FO R
R EC
N O
EW M
M
D EN
ES D
IG ED
N
Applications
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USB Power Management
USB Bus/Self Powered Hubs
Hot-plug Power Supplies
Battery-charger Circuits
Notebooks, Motherboard PCs
SOIC-8
MSOP-8
Figure 1. Package Types of AP2805
Aug. 2012
Rev 1.
3
1
BCD Semiconductor Manufacturing Limited
Data Sheet
500mA High-side Power Distribution Switch with Enable and Flag
AP2805
Pin Configuration
M/MM Package
（SOIC-8/MSOP-8）
N
O
T
FO R
R EC
N O
EW M
M
D EN
ES D
IG ED
N
Figure 2. Pin Configuration of AP2805 (Top View)
Pin Descriptions
Pin Number
1
2, 3
4
5
Pin Name
GND
VIN
Function
Ground
Supply input pin
Chip enable control input, active low or high
Fault flag pin, output with open drain, need a pull-up resistor in
application, active low to indicate OCP or OTP
Switch output voltage
6, 7, 8
VOUT
Aug. 2012
Rev 1.
3
2
BCD Semiconductor Manufacturing Limited
Data Sheet
500mA High-side Power Distribution Switch with Enable and Flag
AP2805
Functional Block Diagram
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N
Figure 3. Functional Block Diagram of AP2805
Aug. 2012
Rev 1.
3
3
BCD Semiconductor Manufacturing Limited
Data Sheet
500mA High-side Power Distribution Switch with Enable and Flag
AP2805
Ordering Information
AP2805
-
G1: Green
TR: Tape & Reel
Blank: Tube
Package
M: SOIC-8
MM: MSOP-8
Circuit Type
N
O
T
FO R
R EC
N O
EW M
M
D EN
ES D
IG ED
N
Condition
A: Active High with Auto Discharge
B: Active High without Auto Discharge
C: Active Low with Auto Discharge
D: Active Low without Auto Discharge
Product Package
SOIC-8
Condition
Temperature Part Number
Range
Green
AP2805AM-G1
Marking ID
Green
2805AM-G1
Packing
Type
Tube
AP2805A
Active High
MSOP-8
SOIC-8
with Auto Discharge
-40 to 85°C
AP2805AMTR-G1
2805AM-G1
Tape & Reel
Tube
Tape & Reel
Tube
AP2805AMM-G1
AP2805BM-G1
2805AMM-G1
AP2805AMMTR-G1
2805AMM-G1
2805BM-G1
AP2805B
Active High
without Auto Discharge
-40 to 85°C
AP2805BMTR-G1
2805BM-G1
Tape & Reel
Tube
MSOP-8
AP2805BMM-G1
2805BMM-G1
AP2805BMMTR-G1
2805BMM-G1
Tape & Reel
Tube
SOIC-8
AP2805CM-G1
2805CM-G1
AP2805C
Active Low
MSOP-8
with Auto Discharge
-40 to 85°C
AP2805CMTR-G1
2805CM-G1
Tape & Reel
Tube
AP2805CMM-G1
2805CMM-G1
AP2805CMMTR-G1
2805CMM-G1
2805DM-G1
Tape & Reel
Tube
SOIC-8
AP2805DM-G1
AP2805D
Active Low
MSOP-8
without Auto Discharge
-40 to 85°C
AP2805DMTR-G1
2805DM-G1
Tape & Reel
Tube
AP2805DMM-G1
2805DMM-G1
AP2805DMMTR-G1
2805DMM-G1
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and Green.
Aug. 2012
Rev 1.
3
4
BCD Semiconductor Manufacturing Limited
Data Sheet
500mA High-side Power Distribution Switch with Enable and Flag
AP2805
Absolute Maximum Ratings (Note 1)
Parameter
Power Supply Voltage
Operating Junction Temperature
Range
Storage Temperature Range
Lead Temperature (Soldering,10 sec)
Thermal Resistance
(Junction to Ambient)
Symbol
V
IN
T
J
T
STG
Value
6.0
150
-65 to 150
260
Unit
V
ºC
ºC
ºC
o
N
O
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FO R
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N O
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M
D EN
ES D
IG ED
N
T
LEAD
θ
JA
SOIC-8
135
MSOP-8
150
ESD (Machine Model)
200
ESD (Human Body Model)
2000
C/W
V
V
Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute
Maximum Ratings” for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Symbol
V
IN
T
A
Min
2.7
-40
Max
5.5
85
Unit
V
°C
Supply Voltage
Operating Ambient
Range
Temperature
Aug. 2012
Rev 1.
3
5
BCD Semiconductor Manufacturing Limited
