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PDF USB3751 Data sheet ( Hoja de datos )
| Número de pieza | USB3751 | |
| Descripción | USB 2.0 Protection IC | |
| Fabricantes | Microchip | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de USB3751 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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USB375x
USB 2.0 Protection IC with Battery
Charger Detection
Features
• VBUS Over-Voltage Protection
- Protects internal circuits from VBUS up to 9V
- Over-Voltage/Under-Voltage Lockout opens
VBUS switch
- Interrupt to indicate Over-Voltage/Under-Volt-
age Lockout
- Integrated Low RDSON FET
• USB Port ESD Protection (DP/DM/VBUS)
- ±15kV (air discharge)
- ±15kV (contact discharge)
- IEC 61000-4-2 level 4 ESD protection without
external devices
• High Speed USB Mux for multiplexing the USB
lanes between different functions (USB3750 only)
- Switch the USB connector between two dif-
ferent functions
- High bandwidth USB switch passes HS USB
signals
• Provides USB Battery Charger Detection for:
- USB-IF Battery Charging compliant Dedi-
cated Charging Ports (DCP)
- USB-IF Battery Charging compliant Charging
• Dead Battery Provision Support (USB375x-1
only)
- Allows 100 mA trickle charging from VBUS
when attached to a Standard Downstream
Port (SDP) while not enumerated
- Built-in 100mA current limiting option
• Microchip RapidCharge Anywhere™ Provides:
- 3-times the charging current through a USB
port over traditional solutions
- USB-IF Battery Charging 1.2 compliance to
any portable device
- Charging current up to 1.5Amps via compati-
ble USB host or dedicated charger
- Dedicated Charging Port (DCP), Charging
(CDP) & Standard (SDP) Downstream Port
support
• flexPWR® Technology
- Extremely low current design ideal for battery
powered applications
- Maximizes power delivered to the system
• Industrial Operating Temperature -40°C to +85°C
• 16-Pin QFN RoHS compliant package; (3.0 mm x
3.0 mm x 0.9 mm height
Downstream Port (CDP)
- Standard Downstream Port (SDP); i.e. USB
host or downstream hub port
- Dedicated SE1 type chargers
USB375x Block Diagram
DP
DM
VBUS
GND
HS Switch is USB3750 feature only
HS USB
Switch
DP_2
DM_2
DP_1
DM_1
Over-Voltage/Under-Voltage
Protection and Current
Limiting
VOUT
Charger
Detection
I2C
Interface
SCL
SDA
INT_B
VBUS
USB 2.0 PHY,
DP Processor, or
Accessory
DM
DP
USB 2.0 PHY,
DM Processor, or
Accessory
VBUS
Battery
VBUS Charger/
PMU
Processor
2011 - 2014 Microchip Technology Inc.
DS00001824A-page 1
1 page  
USB375x
2.0 PIN LAYOUT
2.1 Pin Diagram
The USB375x is available in a QFN (3 x 3 mm) package. The USB3750 pin diagram is detailed in Figure 2-1. The
USB3751 pin diagram is detailed in Figure 2-2.
FIGURE 2-1:
QFN PACKAGE DIAGRAM (USB3750)
DP_1
VBUS
VBUS
VBUS
1
2
3
4
12 DM_2
11 VOUT
10 VOUT
9 VOUT
FIGURE 2-2:
QFN PACKAGE DIAGRAM (USB3751)
DP_1
VBUS
VBUS
VBUS
1
2
3
4
12 NC
11 VOUT
10 VOUT
9 VOUT
2011 - 2014 Microchip Technology Inc.
DS00001824A-page 5
5 Page 
USB375x
FIGURE 3-5:
CHARGER DETECTION TIMING SE1 CHARGER (USB3750-1)
VBUS
VOUT
UVLO
OVP Switch
Enable
USB X
Connect Detect
Check for SE1
SE1 Detected
USB Tri-State
USB
Mux1
USB Mux
Mux1 and Mux2 Disabled
Mux1 En.
INT_B
TVLO_Release
Con. Det. or
TDCD_TOUT
TCD_SE1
Chrg Det
Finish
TVDPSRC_HICRNT
TINT
FIGURE 3-6:
CHARGER DETECTION TIMING SE1 CHARGER (USB3751-X)
VBUS
VOUT
UVLO
OVP Switch
Enable
(USB3750-2)/
100mA
Current Limit
Enable
(USB3750-1)
USB X
Connect Detect
Check for SE1
SE1 Detected
USB Tri-State
USB
Pass-Thru
INT_B
TVLO_Release
Con. Det. or
TDCD_TOUT
TCD_SE1
Chrg Det
Finish
TVDPSRC_HICRNT
TINT
2011 - 2014 Microchip Technology Inc.
DS00001824A-page 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet USB3751.PDF ] | |
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