BQ24002 Series
1-cell, 1.2-A, linear Li-ion battery charger with integrated FET, two LED
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
1-cell, 1.2-A, linear Li-ion battery charger with integrated FET, two LED
| Part | Battery Chemistry | Voltage - Supply (Max) [Max] | Mounting Type | Supplier Device Package | Operating Temperature [Max] | Operating Temperature [Min] | Package / Case [custom] | Package / Case | Package / Case [custom] | Current - Charging | Charge Current - Max [Max] | Number of Cells | Programmable Features | Battery Pack Voltage | Fault Protection |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ24002PWPG4 | Lithium Ion | 10 V | Surface Mount | 20-HTSSOP | 70 ¯C | -40 °C | 0.173 in | 20-PowerTSSOP | 4.4 mm | Constant | 1.2 A | 1 | Current, Timer | 4.2 V | Over Temperature |
Texas Instruments BQ24002PWPRG4 | Lithium Ion | 10 V | Surface Mount | 20-HTSSOP | 70 ¯C | -40 °C | 0.173 in | 20-PowerTSSOP | 4.4 mm | Constant | 1.2 A | 1 | Current, Timer | 4.2 V | Over Temperature |
Texas Instruments BQ24002PWP | Lithium Ion | 10 V | Surface Mount | 20-HTSSOP | 70 ¯C | -40 °C | 0.173 in | 20-PowerTSSOP | 4.4 mm | Constant | 1.2 A | 1 | Current, Timer | 4.2 V | Over Temperature |
Texas Instruments BQ24002PWPR | Lithium Ion | 10 V | Surface Mount | 20-HTSSOP | 70 ¯C | -40 °C | 0.173 in | 20-PowerTSSOP | 4.4 mm | Constant | 1.2 A | 1 | Current, Timer | 4.2 V | Over Temperature |
Texas Instruments BQ24002RGWR | Lithium Ion | 10 V | Surface Mount | 20-VQFN (5x5) | 70 ¯C | -40 °C | 20-VQFN Exposed Pad | Constant | 1.2 A | 1 | Current, Timer | 4.2 V | Over Temperature |
Key Features
• Highly Integrated Solution With FET Pass Transistor and Reverse-Blocking Schottky and Thermal ProtectionIntegrated Voltage and Current Regulation With Programmable Charge CurrentHigh-Accuracy Voltage Regulation (±1%)Ideal for Low-Dropout Linear Charger Designs for Single-Cell Li-Ion Packs With Coke or Graphite AnodesUp to 1.2-A Continuous Charge CurrentSafety-Charge Timer During Preconditioning and Fast ChargeIntegrated Cell Conditioning for Reviving Deeply Discharged Cells and Minimizing Heat Dissipation During Initial Stage of ChargeOptional Temperature or Input-Power Monitoring Before and During ChargeVarious Charge-Status Output Options for Driving Single, Double, or Bicolor LEDs or Host-Processor InterfaceCharge Termination by Minimum Current and TimeLow-Power Sleep ModePackaging: 5 mm × 5 mm MLP or 20-Lead TSSOP PowerPAD™APPLICATIONSPDAsInternet AppliancesMP3 PlayersDigital CamerasPowerPAD is a trademark of Texas Instruments.Highly Integrated Solution With FET Pass Transistor and Reverse-Blocking Schottky and Thermal ProtectionIntegrated Voltage and Current Regulation With Programmable Charge CurrentHigh-Accuracy Voltage Regulation (±1%)Ideal for Low-Dropout Linear Charger Designs for Single-Cell Li-Ion Packs With Coke or Graphite AnodesUp to 1.2-A Continuous Charge CurrentSafety-Charge Timer During Preconditioning and Fast ChargeIntegrated Cell Conditioning for Reviving Deeply Discharged Cells and Minimizing Heat Dissipation During Initial Stage of ChargeOptional Temperature or Input-Power Monitoring Before and During ChargeVarious Charge-Status Output Options for Driving Single, Double, or Bicolor LEDs or Host-Processor InterfaceCharge Termination by Minimum Current and TimeLow-Power Sleep ModePackaging: 5 mm × 5 mm MLP or 20-Lead TSSOP PowerPAD™APPLICATIONSPDAsInternet AppliancesMP3 PlayersDigital CamerasPowerPAD is a trademark of Texas Instruments.
Description
AI
The bq2400x series ICs are advanced Li-Ion linear charge management devices for highly integrated and space-limited applications. They combine high-accuracy current and voltage regulation; FET pass-transistor and reverse-blocking Schottky; battery conditioning, temperature, or input-power monitoring; charge termination; charge-status indication; and charge timer in a small package.
The bq2400x measures battery temperature using an external thermistor. For safety reasons, the bq2400x inhibits charge until the battery temperature is within the user-defined thresholds. Alternatively, the user can monitor the input voltage to qualify charge. The bq2400x series then charge the battery in three phases: preconditioning, constant current, and constant voltage. If the battery voltage is below the internal low-voltage threshold, the bq2400x uses low-current precharge to condition the battery. A preconditioning timer is provided for additional safety. Following pre-conditioning, the bq2400x applies a constant-charge current to the battery. An external sense-resistor sets the magnitude of the current. The constant-current phase is maintained until the battery reaches the charge-regulation voltage. The bq2400x then transitions to the constant voltage phase. The user can configure the device for cells with either coke or graphite anodes. The accuracy of the voltage regulation is better than ±1% over the operating junction temperature and supply voltage range.
Charge is terminated by maximum time or minimum taper current detection
The bq2400x automatically restarts the charge if the battery voltage falls below an internal recharge threshold.
The bq2400x series ICs are advanced Li-Ion linear charge management devices for highly integrated and space-limited applications. They combine high-accuracy current and voltage regulation; FET pass-transistor and reverse-blocking Schottky; battery conditioning, temperature, or input-power monitoring; charge termination; charge-status indication; and charge timer in a small package.
The bq2400x measures battery temperature using an external thermistor. For safety reasons, the bq2400x inhibits charge until the battery temperature is within the user-defined thresholds. Alternatively, the user can monitor the input voltage to qualify charge. The bq2400x series then charge the battery in three phases: preconditioning, constant current, and constant voltage. If the battery voltage is below the internal low-voltage threshold, the bq2400x uses low-current precharge to condition the battery. A preconditioning timer is provided for additional safety. Following pre-conditioning, the bq2400x applies a constant-charge current to the battery. An external sense-resistor sets the magnitude of the current. The constant-current phase is maintained until the battery reaches the charge-regulation voltage. The bq2400x then transitions to the constant voltage phase. The user can configure the device for cells with either coke or graphite anodes. The accuracy of the voltage regulation is better than ±1% over the operating junction temperature and supply voltage range.
Charge is terminated by maximum time or minimum taper current detection
The bq2400x automatically restarts the charge if the battery voltage falls below an internal recharge threshold.