EC8216/EC8217/
EC8218/EC8219
USB Power-Distriibution Switches
General Description
The EC8216/EC8217/EC8218/EC8219 series of power switches are designed for USB applications. The62mΩN-channel
MOSFET power switch satisfies the voltage drop requirements of USB specification. The protection features include current-limit protection, short-circuit protection, and over-temperature protection. The device limits the output current at curren tlimit threshold level. When VOUT drops below 1.5V, the devices limit the current to a lower and safe level. The over-temperature
Protection limits the junction temperature below 140℃ in case of short circuit or over load conditions.Other features include a
deglitched OCB output to indicate the fault condition and an enable input to enable or disable the device.
Features
● 62mΩ High Side MOSFET
● Wide Supply Voltage Range: 2.7V to 5.5V
● Current-Limit and Short-Circuit Protections
● Over-Temperature Protection
● Fault Indication Output
● Enable Input
● Lead Free and Green Devices Available
Applications
●Notebook and Desktop Computers
●USB Ports
● High-Side Power Protection Switches
Pin Configurations
TSOT23-5(Top View)
EC8218A/EC8219A
TSOT23-5(Top View)
EC8216A/EC8217A
EC8216/EC8217/
EC8218/EC8219
USB Power-Distriibution Switches
Pin Description
Pin Number | Pin Name | Description | |
EC8216 EC8217 | EC8218 EC8219 | ||
1 | 5 | VOUT | Output Voltage Pin. The output voltage follows the input voltage. When ENB is high or EN is low, the output voltage is discharged by an internal resistor. |
2 | 2 | GND | Ground. |
3 | 1 | OCB | Fault Indication Pin. This pin goes low when a current limit or an over-temperature condition is detected after a 12ms deglitch time. |
4 | 3 | EN | Enable Input. Pulling this pin to high will enable the device and pulling this pin to low will disable device. The EN pin cannot be left floating. |
5 | 4 | VIN | Power Supply Input. Connect this pin to external DC supply. |
Ordering Information
Part Number | Package | Marking | Marking Information |
EC8216ANT2R | TSOT23-5 | 8216A LLLLL | 1.LLLLL：Last five number of Lot No |
EC8217ANT2R | TSOT23-5 | 8217A LLLLL | |
EC8218ANT2R | TSOT23-5 | 8218A LLLLL | |
EC8219ANT2R | TSOT23-5 | 8219A LLLLL |
EC8216/EC8217/
EC8218/EC8219
USB Power-Distriibution Switches
Function Block Diagram
EC8216/EC8217/
EC8218/EC8219
USB Power-Distriibution Switches
Absolute Maximum Ratings
Note 1:
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Recommended Operating Conditions
Symbol | Parameter | Typical Value | Unit |
VIN | VIN Input Voltage | 2.7~5.5 | V |
VCC | VCC SupplyVoltage | 4.5~5.5 | V |
IOUT | OUT Output Current(EC8216/EC8218) | 0~1 | A |
OUT Output Current(EC8217/EC8219) | 0~2.4 | A | |
TA | Ambient Temperature | -40~85 | ℃ |
TJ | Junction Temperature | -40~125 | ℃ |
Symbol | Parameter | Rating | Unit |
VIN | VIN Input Voltage(VIN to GND) | -0.3 ~ 7 | V |
VOUT | VOUT to GND Voltage | -0.3 ~ 7 | V |
VENB,VEN | ENB,EN to GND Voltage | -0.3 ~ 7 | V |
VOCB | OCB to GND Voltage | -0.3 ~ 7 | V |
TJ | Maximum Junction Temperature | 150 | ℃ |
TSTG | Storage Temperature | -65 to 150 | ℃ |
TSDR | Maximum Soldering Temperature,10 seconds | 260 | ℃ |
Note：Refer to the typical application circuit
Thermal Characteristics
Symbol | Parameter | Typical Value | Unit |
θJA | Junction-to-Ambient Resistance in free air | 235 | ℃/W |
Electrical Characteristics
Unless otherwise specified, these specifications apply over VIN=5V, VEN =5V or VENB=0V and TA= -40 ~ 85℃. Typical values are at TA=25℃.
Symbol | Parameter | Test Conditions |
| Unit | ||
Min. | Typ. | Max. | ||||
SUPPLY CURRENT | ||||||
| VIN Supply Current | No load, VEN=0V or VENB=5V |
|
| 1 | mA |
No load, VEN=5V or VENB=0V |
| 60 | 100 | mA | ||
| Leakage Current | VOUT=GND, VEN=0V or VENB=5V |
|
| 1 | mA |
| Reverse Leakage Current | VIN=GND, VOUT=5V, VEN=0V or VENB=5V |
|
| 1 | mA |
POWER SWITCH | ||||||
RDS(ON) | Power Switch On Resistance I | IOUT=1A, TA= 25 ℃ |
| 62 | 78 | mW |
UNDER-VOLTAGE LOCKOUT (UVLO) | ||||||
| VIN UVLO Threshold Voltage | VIN rising, TA= -40 ~ 85 ℃ | 1.7 |
| 2.65 | V |
| VIN UVLO Hysteresis |
|
| 0.2 |
| V |
CURRENT-LIMIT AND SHORT-CIRCUIT PROTECTIONS | ||||||
ILIM | Current Limit Threshold | EC8217/EC8219 VIN=2.7V to 5.5V, TA= -40 ~ 85 ℃ | 2.5 | 2.8 | 3.2 | A |
EC8216/EC8218 VIN=2.7V to 5.5V, TA= -40 ~ 85 ℃ | 1.1 | 1.3 | 1.5 | A | ||
ISHORT | Short-Circuit Output Current | EC8217/EC8219, VIN=2.7V to 5.5V |
| 1.5 |
| A |
EC8216/EC8218, VIN=2.7V to 5.5V |
| 0.8 |
| A | ||
OCB OUTPUT PIN | ||||||
| OCB Output Low Voltage I | IOCB=5mA |
| 0.2 | 0.4 | V |
| OCB Leakage Current | VOCB=5V |
|
| 1 | uA |
tD(OCB) | OCB Deglitch Time | OCB assertion, TA= -40 ~ 85 ℃ | 5 | 12 | 20 | mS |
EN OR ENB INPUT PIN | ||||||
VIH | Input Logic HIGH | VIN=2.7V to 5V | 2 |
|
| V |
VIL | Input Logic LOW | VIN=2.7V to 5V |
|
| 0.8 | V |
| Input Current |
|
|
| 1 | uA |
| VOUT Discharge Resistance | VEN=0V or VENB=5V, VOUT=1V |
| 40 |
| W |
tD(ON) | Turn On Delay Time |
|
| 30 |
| uS |
tD(OFF) | Turn Off Delay Time |
|
| 30 |
| uS |
tSS | Soft-Start Time | No load, COUT=1mF, VIN=5V |
| 400 |
| uS |
OVER-TEMPERATURE PROTECTION (OTP) | ||||||
TOTP | Over-Temperature Threshold | TJ rising |
| 140 | 1 | ℃ |
| Over-Temperature Hysteresis |
|
| 20 | 1 | ℃ |
EC8216/EC8217/
EC8218/EC8219
USB Power-Distriibution Switches
Typical Operating Characteristics
