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R5550 Series
Intelligent Power Switch IC
The R5550 Series are CMOS-based intelligent power switch IC. R5550 is a protection IC used in power line with built-in current limit circuit and under-voltage lockout circuit (UVLO). Due to a built-in 180mΩ on-resistor, R5550 can provide a low supply current.
R5550 can detect two different over current threshold and under voltage error. When the R5550 detects over current, the switch turns off after the preset delay time (10ms). If the output current exceeds the larger current limit, the current is limited by the preset value immediately, and the switch turns off after the preset delay time (1.33ms).
R5550 has VSENSE pin. If an abnormal low voltage is detected, after the preset delay time (10ms), the switch turns off. After detecting the abnormal situation, the switch turns on automatically if the cause of the error is removed. A 1mm square DFN(PLP)1010-4F package called a flip chip is available.
Specs & Datasheets
| Consumer | |
|---|---|
| Input Voltage Range | 2.3 V to 5.25 V (6.0 V) |
| Operating Temperature Range | -40°C to 85°C (125°C) |
| Supply Current | Typ. 2.6 µA (Enable, VSENSE = 2.0 V) |
| Output Current | 1 A |
| ON-resistance | 180 mΩ (VIN = 3.3 V, IOUT = 100 mA) |
| Internal FET | Pch |
| Package | DFN(PLP)1010-4F |
| SENSE Pin Detector Threshold | Typ. 0.5 V |
| SENSE Pin Detector Threshold Accuracy | ±3% |
Protections / Functions
| TSD | Reverse | OCP | UVLO | OVLO | Soft Start | PGOOD | Auto Discharge | Reset |
|---|---|---|---|---|---|---|---|---|
 |
|
Technical Documents
Typical Application
Output Voltage vs. Output Current
Timing Chart Current Limit Detection
Timing Chart Low Voltage Detection
Timing Chart Over Current Detection
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| R5550K001A-TR |
|
DFN(PLP)1010-4F | R5550K | R5550K |
C
Refer to the datasheets for the details on the product.
The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
Please contact us or our distributors for unpublished reliability information.
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Authorized Distributors
Please contact your local distributors for any sales-related inquiry such as price, stock, delivery, etc.
Functional Description
| TSD | Thermal Shutdown Function |
|---|---|
| Reverse Current Protection | Reverse Current Protection |
| OCP | Overcurrent Protection |
| UVLO | Undervoltage Lockout Protection |
| OVLO | Overvoltage Lockout Protection |
| Soft Start | Soft Start Function |
| PGOOD | Power Good Output |
| Auto Discharge | Auto Discharge Circuit |