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PDF PI5USB2544A Data sheet ( Hoja de datos )
| Número de pieza | PI5USB2544A | |
| Descripción | USB Charging Port Controller and Load Detection Power Switch | |
| Fabricantes | Pericom Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de PI5USB2544A (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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PI5USB2544A, PI5USB2546A
USB Charging Port Controller and Load Detection Power Switch
Features
Two separate current limiting channels
Supports CDP/DCP Modes per USB Battery Charging
Specification 1.2
Supports Shorted Mode per Chinese Telecommunication
Industry Standard YD/T1591-2009
Supports non-BC1.2 Charging Modes by Automatic
Selection
Divider-1A mode
Divider-2A mode
Divider-2.4A mode
DCP-1.2V mode
Supports Sleep-Mode Charging and Mouse/Keyboard
Wake up
Automatic SDP/CDP Switching for Devices that do not
request for the CDP Ports
Load Detection for Power Supply Control in S4/S5
Charging and Port Power Management in all Charge
Modes
Compatible with USB 2.0/3.0 Power Switch requirements
Integrated 73-mΩ (Typ.) High-Side MOSFET
Adjustable Current-Limit up to 3A(Typ.)
Operating Range:4.5V to 5.5V
Max Device Current
2μA at Device Disabled
270μA at Device Enabled
Device Package: TQFN 3.0x3.0-16L
Description
The PI5USB2544A/2546A series is a USB charging port
controller and power switch with an integrated USB 2.0 high-
speed data line (D+/D–) switch. PI5USB2544A/2546A
provides the electrical signatures on D+/D– to support
charging schemes listed under device feature section. This
series is compatible with both popular BC1.2 compliant and
non-BC1.2 compliant devices.
System wake up (from S3) with a mouse/keyboard (both low
speed and full speed) is fully supported in the
PI5USB2544A/2546A. Additionally, PI5USB2546A
supports two distinct power management features, namely,
power wake and port power management (PPM) through
/STATUS pin. Power wake allows for power supply control
in S4/S5 charging and PPM manages port power in a multi-
port application.
The PI5USB2544A/2546A series 73-mΩ power-distribution
switch is intended for applications where heavy capacitive
loads and short-circuits are likely to be encountered. Two
programmable current thresholds provide flexibility for
setting current limits and load detect thresholds
Applications
USB Ports (Host and Hubs)
Notebook and Desktop PCs
Universal Wall Charging Adapters
Pin Configuration (TQFN-16L, ZH)
2015-08-0012
PI5USB2544A
PI5USB2546A
PT0513-3 8/31/15
1
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PI5USB2544A, PI5USB2546A
USB Charging Port Controller and Load Detection Power Switch
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Electrical Characteristics
4.5V≤VIN≤5.5V; TJ=-40°C to +125°C; VEN =VIN, VILIM_SEL=VIN, VCTL1= VCTL2= VCTL3=VIN, R/FAULT=R/STATUS=10kΩ, RILIM_HI=20kΩ,
RILIM_LO=80.6kΩ, Positive currents are into pins. Typical values are at 25°C. All voltages are with respect to GND. unless otherwise specified.
Symbol
Description
Test Conditions
Min. Typ. Max. Unit
ILIM_SEL Current Limit
IOS OUT Current-limit(2)
tIOS Response time to OUT short circuit(1)
VILIM_SEL= 0 V RILIM_LO=210kΩ
VILIM_SEL= 0 V RILIM_LO=80.6kΩ
VILIM_SEL= 0 V RILIM_LO=22.1kΩ
VILIM_SEL= VIN RILIM_HI=20kΩ
VILIM_SEL= VIN RILIM_HI=16.9kΩ
VIN = 5.0V, R=0.1Ω, lead length=2”
205
575
2120
2340
2770
-
240
625
2275
2510
2970
1.5
275
680
2430
2685
3170
-
mA
s
Supply Current
IIN_OFF Disabled IN supply current VEN=0V, VOUT=0V, TJ =-40°C to +125°C
- 0.1 2
VCTL1=VCTL2= VIN, VCTL3= 0V VILIM_SEL = 0V
- 165 220
VCTL1 = VCTL2 = VCTL3 = VIN, VILIM_SEL = 0V
- 175 230
IIN_ON Enable IN supply current
VCTL1 = VCTL2 = VIN, VCTL3 = 0V, VILIM_SEL = VIN - 185 240 A
VCTL1 = VCTL2 = VCTL3 = VIN, VILIM_SEL = VIN
- 195 250
VCTL1 = 0V, VCTL2 = VCTL3 = VIN, VILIM_SEL = 0V
- 215 270
VCTL1 = 0V, VCTL2 = VCTL3 = VIN, VILIM_SEL = VIN - 240 290
Undervoltage Lockout
VUVLO
IN rising UVLO threshold voltage
Hysteresis(1)
- 3.9 4.1 4.3 V
- - 100 - mV
/FAULT
VOL Output low voltage
IOFF Off-state leakage current
TD Over current /FAULT rising and falling deglitch
/STATUS (PI5USB2546A)
I/FAULT = 1mA
V/FAULT = 5.5V
-
- - 100 mV
- - 1 A
5 8.2 12 ms
VOL Output low voltage
IOFF Off-state leakage
Thermal Shutdown
I/STATUS = 1mA
V/STATUS = 5.5V
- - 100 mV
- - 1 A
OTSD Thermal shutdown threshold
Hysteresis(1)
- 170 -
°C
- - 20 -
Note:
(1) These parameters are provided for reference only and do not constitute part of Pericom's published device specifications for purposes of Pericom's product
warranty
(2) Pulse-testing techniques maintain junction temperature close to ambient temperature; current limit value tested at 80% output voltage. Thermal effects must
be taken into account separately.
2015-08-0012
PT0513-3 8/31/15
5
5 Page 
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Details Description
PI5USB2544A, PI5USB2546A
USB Charging Port Controller and Load Detection Power Switch
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The following overview references various industry standards. It is always recommended to consult the most up-to-date
standard to ensure the most recent and accurate information. Rechargeable portable equipment requires an external power
source to charge its batteries. USB ports are a convenient location for charging because of an available 5V power source.
Universally accepted standards are required to make sure host and client-side devices operate together in a system to ensure
power management requirements are met. Traditionally, host ports following the USB 2.0 specification must provide at least
500mA to downstream client-side devices. Because multiple USB devices can be attached to a single USB port through a bus-
powered hub, it is the responsibility of the client-side device to negotiate its power allotment from the host to ensure the total
current draw does not exceed 500mA. In general, each USB device is granted 100mA and may request more current in 100mA
unit steps up to 500mA. The host may grant or deny based on the available current. A USB 3.0 host port not only provides
higher data rate than USB 2.0 port but also raises the unit load from 100mA to 150mA. It is also required to provide a minimum
current of 900mA to downstream client-side devices.
Additionally, the success of USB has made the mini-USB connector a popular choice for wall adapter cables. This allows a
portable device to charge from both a wall adapter and USB port with only one connector. As USB charging has gained
popularity, the 500mA minimum defined by USB 2.0 or 900mA for USB 3.0 has become insufficient for many handset and
personal media players which need a higher charging rate. Wall adapters can provide much more current than 500mA/900mA.
Several new standards have been introduced defining protocol handshaking methods that allow host and client devices to
acknowledge and draw additional current beyond the 500mA/900mA minimum defined by USB 2.0/3.0 while still using a
single micro-USB input connector. The PI5USB2546 supports four of the most common USB charging schemes found in
popular hand-held media and cellular devices:
USB Battery Charging Specification BC1.2
Chinese Telecommunications Industry Standard YD/T 1591-2009
Divider-1A, Divider-2A and Divider-2.4A Mode
DCP-1.2V Mode
YD/T 1591-2009 is a subset of BC1.2 spec. supported by vast majority of devices that implement USB charging.
Divider-1A, Divider-2A, Divider-2.4A and DCP-1.2V charging schemes are supported in devices from specific yet popular device
makers.
BC1.2 lists three different port types as listed below:
Standard Downstream Port (SDP)
Charging Downstream Port (CDP)
Dedicated Charging Port (DCP)
BC1.2 defines a charging port as a downstream facing USB port that provides power for charging portable equipment, under
this definition CDP and DCP are defined as charging ports
Table 1 shows the differences between these ports.
Port Type
SDP (USB 2.0)
SDP (USB 3.0)
CDP
DCP
Table 1. Operation Modes
Support USB 2.0 Communication
Yes
Yes
Yes
No
Max. allowable current draw by
portable device
0.5A
0.9A
1.5A
1.5A
2015-08-0012
PT0513-3 8/31/15
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet PI5USB2544A.PDF ] | |
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