R5651 Series
3 to 5 Serial Cell Li-Ion / Li-Polymer Battery Protection IC with Temperature Protection
R5651 Series
3 to 5 Serial Cell Li-Ion / Li-Polymer Battery Protection IC with Temperature Protection
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Description
The R5651 is an overcharge and discharge protection IC for 3- to 5- series cell Li-ion / Li-polymer rechargeable battery pack, further includes a short-circuit and protection circuits for charge / discharge overcurrent. The R5651 can select any number of cells by applying a certain voltage on the SEL pin.
Key Benefits
- Using a current-sense resistor with low resistance ratings: reduction in high temperature in large current and realizing a thermal design of a board easily
- Separation between charging and discharging paths: achieving low impedance of the battery pack
- Cascading: achieving simple circuit configuration for battery pack with six-cell and more and reducing external components
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Spec
Operating Input Voltage 4.0 V to 25.0 V (Maximum Rating: 30 V) Number of Cells 3,4,5 Supply Current Typ. 13.0 µA Standby Current Typ. 6.0 µA Overcharge Detection Voltage 3.6 V to 4.5 V (0.005 V Steps) Overcharge Detection Voltage Accuracy ±25 mV Overcharge Detection Delay Time 1.0 s Overdischarge Detection Voltage 2.0 V to 3.2 V (0.005 V Steps) Overdischarge Detection Voltage Accuracy ±50 mV Overdischarge Detection Delay Time Set by external capacitor Discharge Overcurrent Detection Voltage VDET3-1: 0.01 V to 0.15 V (0.005 V Steps)
VDET3-2: 0.03 V to 0.45 V (0.005 V Steps)Discharge Overcurrent Detection Voltage Accuracy VDET3-1: ±3 mV (0.01 V to 0.03 V), ±10% (0.035 V to 0.15 V)
VDET3-2: ±8 mV (0.03 V to 0.08 V), ±10% (0.09 V to 0.345 V)Discharge Overcurrent Detection Delay Time VDET3-1: Set by external capacitor
VDET3-2: tVDET3-1× 1/10, tVDET3-1× 1/20Charge Overcurrent Detection Voltage -0.050 V to -0.008 V (0.005 V Steps) Charge Overcurrent Detection Voltage Accuracy ±10% (-0.050 V to -0.030 V)
±3 mV (-0.030 V to -0.008 V)Charge Overcurrent Detection Delay Time 512 ms, 1024 ms, 2560 ms Short Detection Voltage 0.1 V to 0.6 V (0.02 V Steps) Short Detection Voltage Accuracy ±30% Short Detection Delay Time 330 µs Conditions for Overcharge Restoration Auto Release Conditions for Overdischarge Restoration Auto Release Package TSSOP-24 0 V Battery Charging Inhibition Voltage 1.1 V, 1.3 V (Accuracy: ±0.2 V) Protections / Functions
Temperature Protection Reset Alarm Cell Balance Cascadable Open Wire Detection Wakeup Short-circuit Current Detection Delay Time Shortening 
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Technical
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Typical Application Circuit for 5-cell Protection Battery Charger
When separated between charging and discharging paths
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Quality &
PackagesProduct Name Compatibility Package Marking Reliability R5651Txxxxx-E2-FE TSSOP-24 See datasheet R5651T-FE - Refer to the datasheets for the details on the product.
- The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
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Sample / Buy
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Buy Online
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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.
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Download Datasheet
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 "Protecting Li-ion Batteries: Functions and Advantages".