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R5443 Series
1-Cell Li-ion Battery Protection IC
The R5443 is a one-cell Li-ion / polymer battery protection IC provides overcharge, overdischarge, and discharge / charge overcurrent detections. One of the features of this device is a high-accuracy detection at overcharge and overcurrent. The supply current after overdischarge detection can be reduced to a minimum by stopping the internal circuits. The small WLCSP package is available.
Specs & Datasheets
| Operating Input Voltage | 1.5 V to 5.0 V (Maximum Rating: 12 V) | ||
| Number of Cells | 1 | ||
| Supply Current | Typ. 2.5 µA | ||
| Standby Current | Typ. 0.04 µA | ||
| Overcharge Detection Voltage | 4.2 V to 4.6 V (0.005 V step) | ||
| Overcharge Detection Voltage Accuracy | ±10 mV (0°C ≤ Ta ≤ 50°C) | ||
| Overcharge Detection Delay Time | 1.0 s | ||
| Overdischarge Detection Voltage | 2.0 V to 3.4 V (0.050 V step) | ||
| Overdischarge Detection Voltage Accuracy | ±2.0% | ||
| Overdischarge Detection Delay Time | 16 ms, 32 ms, 128 ms | ||
| Discharge Overcurrent Detection Voltage | 0.015 V to 0.150 V (0.015 V to 0.050 V: 0.001 V step) (0.050 V to 0.150 V: 0.005 V step) |
||
| Discharge Overcurrent Detection Voltage Accuracy | ±3 mV (0.015 V to 0.030 V) ±10% (0.030 V to 0.050 V) ±5 mV (0.050 V to 0.150 V) |
||
| Discharge Overcurrent Detection Delay Time | 8 ms, 16 ms, 32 ms, 128 ms, 512 ms | ||
| Charge Overcurrent Detection Voltage | -0.150 V to -0.015 V (-0.030 V to -0.015 V: 0.001 V step) (-0.150 V to -0.030 V: 0.005 V step) |
||
| Charge Overcurrent Detection Voltage Accuracy | ±4 mV (-0.020 V to -0.015 V) ±20% (-0.040 V to -0.020 V) ±8 mV (-0.150 V to -0.040 V) |
||
| Charge Overcurrent Detection Delay Time | 8 ms | ||
| Short Detection Voltage | 0.040 V to 0.300 V (5 mV step) | ||
| Short Detection Voltage Accuracy | ±5 mV | ||
| Short Detection Delay Time | 280 µs | ||
| Conditions for Overcharge Restoration | Latch | ||
| Conditions for Overdischarge Restoration | Latch | ||
| Package | WLCSP-6-P7 | ||
| 0 V Charge | Optional | ||
Protections / Functions
| Temperature Protection | Reset | Alarm | Cell Balance | Cascadable | Open Wire Detection | Wakeup | Short-circuit Current Detection | Delay Time Shortening |
|---|---|---|---|---|---|---|---|---|
 |
|
Technical Documents
Typical Application
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| R5443Zxxxxx-E2-F |
|
WLCSP-6-P7 | R5443Z | R5443Z-F |
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.
Sample / Buy
Buy Online
Buy, Request for Samples, Request for Information Materials
Authorized Distributors
Please contact your local distributors for any sales-related inquiry such as price, stock, delivery, etc.
Functional Description
| Temperature Protection | Temperature Protection |
|---|---|
| Reset | Reset Function |
| Alarm | Alarm Function |
| Cell Balance | Cell Balance Function |
| Cascadable | Cascade Connect Function |
| Open Wire Detection | Open Wire Detect Function |
| Wakeup | Wakeup Function |
| Short-circuit Current Detection | Short-circuit Current Protection |
| Delay Time Shorting | Output Delay Time Short Function |
For more details, please refer to "Externally Configurable Protections and Their Advantages".