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Pericom Semiconductor Corporation

PI5PD2557 Datasheet Preview

PI5PD2557 Datasheet

Precision Adjustable Current-Limited Power Switch

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PI5PD2556/2557
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Precision Adjustable Current -Limited Power Switch
Features
Description
Meets USB Current-Limiting Requirement
±6.5% Current-Limit Accuracy at 4.0A
Adjustable Current Limit, 500mA-5A (typ.)
Fast Over-current Response - 3.5μS (typ.)
22mΩ High-Side MOSFET
Operating Range: 2.5 V to 5.5V
2-μA Maximum Standby Supply Current
Built-in Soft-Start
15 kV / 8 kV System-Level ESD Capable
Device Package: TDFN 3x3-8L
UL Listed File No. E341484
CB Certified
Applications
USB Ports/Hubs
Digital TV
Set-Top Boxes
VOIP Phones
Pin Configuration
The PI5PD2556/2557 series is single-channel power-
distribution switch intended for applications where
precision current limiting is required or heavy capacitive
loads and short circuits are encountered. These devices
offer a programmable current-limit threshold between
500 mA and 5A (typ) per channel via an external resistor.
The power-switch rise and fall times are controlled to
minimize current surges during turn on/off.
Each channel of the PI5PD2556/2557 devices limits the
output current to a safe level by switching into a
constant-current mode when the output load exceeds the
current-limit threshold.
Typical Application Circuit
VVIoNut
R1
10 0k
/FAULT1 Sign al
IN
C in
0. 1uF
IN
/FAU LT
O UT
O UT
IL IM
Vout
C out
GND
IN
1
2
8 FAULT
7 OUT
Con trol In put
EN
G ND
P ow er Pa d
R adj
IN 3
/EN(EN) 4
6 OUT
5 ILIM
Figure 1 Typical Application Circuit
TDTFDNF3Nx32-x83L-8(LTo(Tp oVpieVwie) w)
Pin Description
Pin Name
Pin No.
PI5PD2556 PI5PD2557
1 GND
2, 3 IN
4 /EN
EN
5 ILIM
6, 7 OUT
8 /FAULT
Type
-
I
I
I
O
O
Description
Ground.
Power input voltage.
Enable input, logic low turns on power switch for PI5PD2556, logic high
turns on power switch for PI5PD2557.
External resistor used to set current-limit threshold; recommended 20 kΩ ≤
RILIM ≤ 187 kΩ.
Power switch output for channel two
Active-low open-drain output, asserted during over-current or over-
temperature condition or reverse voltage occurs
2015-08-0011
PT0497-4 08/31/15
1




Pericom Semiconductor Corporation

PI5PD2557 Datasheet Preview

PI5PD2557 Datasheet

Precision Adjustable Current-Limited Power Switch

No Preview Available !

PI5PD2556/2557
Precision Adjustable
Current-Limited Power Switch
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Maximum Ratings
StorageTemperature...................................................................................-65oC to +150oC
SupplyVoltage to Ground Potential............................................................-0.5Vto +6.0V
DC Input Voltage......................................................................................-0.5Vto VDD+0.5V
Voltagerange fromIN to OUT......................................................................-0.5Vto+6.0V
ControlInput Voltage(VIN)...........................................................................-0.5Vto+6.0V
Continuous totalpower dissipation(1).......................................................................2400mW
Continuous FAULT sink current..................................................................................25mA
Power Dissipation..............................................................................................................0.5W
ESD: HBM Mode...........................................................................................................4000V
CDM Mode..............................................................................................................500V
ESD-systemlevel (contact/air)...............................................................................8kV/15kV
Note:
1. Stresses greater than those listed under
MAXIMUM RATINGS may cause permanent
damage to the device. This is a stress rating only
and functional operation of the device at these or
any other conditions above those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect
reliability.
2. The JEDEC high-K (2s2p) board used to derive
this data was a 3in × 3in, multilayer board with 1-
ounce internal power and ground planes and 2-
ounce copper traces on top and bottom of the board.
Recommended operation conditions
Symbol
Parameter
VIN Input Voltage
VEN
Input Voltage
V/EN
PI5PD2556
PI5PD2557
VIH High-level input voltage on EN
VIL Low-level input voltage on EN
IOUT Continuous output current per channel, OUT
IFAULT Continuous /FAULT sink current
RILIM Recommended resistor limit range
TA Operating Temperature Range
Conditions Min Typ Max Unit
- 2.5 - 5.5 V
- 0 - 5.5
V
0 - 5.5
- 1.1 - - V
- - - 0.66 V
- 0 - 5A
- - - 10 mA
- 20 - 187 k
- -40 - 85 ºC
2015-08-0011
PT0497-4 08/31/15
2


Part Number PI5PD2557
Description Precision Adjustable Current-Limited Power Switch
Maker Pericom Semiconductor Corporation
Total Page 12 Pages
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