BQ24170RGYR BQ24171RGYR BQ24172RGYR 1.6MHz Usb Lithium Ion Battery Charger Circuit Adjustable Charge Voltage
manufacturer:
Manufacturer
Category:
Flash Memory IC Chip
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Specifications
Output Voltage:
4.2 V
Output Current:
4 A
Operating Supply Voltage:
4.5 V To 17 V
Product Type:
Battery Management
Highlight:
battery charge management ic
,power management integrated circuit
Introduction
BQ24170RGYR BQ24171RGYR BQ24172RGYR 1.6MHz Usb Lithium Ion Battery Charger Circuit Adjustable Charge
Voltage
1 Features
- 1.6-MHz Synchronous Switched-Mode Charger with 4-A Integrated N-MOSFETs
- Up to 94% Efficiency
- 30-V Input Rating with Adjustable Overvoltage Protection
- – 4.5-V to 17-V Input Operating Voltage Range
- Battery Charge Voltage
- – bq24170: 1-, 2-, or 3-Cell with 4.2 V/Cell
- – bq24172: Adjustable Charge Voltage
- High Integration
- – Automatic Power Path Selector Between Adapter and Battery
- – Dynamic Power Management
- – Integrated 20-V Switching MOSFETs
- – Integrated Bootstrap Diode
- – Internal Digital Soft Start
- Safety
- – Thermal Regulation Loop Throttles Back Current to Limit TJ = 120°C
- – Thermal Shutdown
- – Battery Thermistor Sense Hot/Cold Charge Suspend and Battery Detect
- – Adjustable Input Overvoltage Protection
- – Cycle-by-Cycle Current Limit
- Accuracy
- – ±0.5% Charge Voltage Regulation
- – ±4% Charge Current Regulation
- – ±4% Input Current Regulation
- <15-μA Battery Current With Adapter Removed
- <1.5-mA Input Current With Adapter Present and Charge Disabled
2 Applications
-
Tablet PCs
-
Portable Data Capture Terminals
-
Portable Printers
-
Medical Diagnostics Equipment
-
Battery Bay Chargers
-
Battery Backup Systems
3 Description
The bq2417x device is a highly integrated stand- alone Li-Ion and Li-Polymer switched-mode battery charger with two integrated N-channel power MOSFETs. The device offers a constant-frequency synchronous PWM controller with high-accuracy regulation of input current, charge current, and voltage. The bq2417x closely monitors the battery pack temperature to allow charge only in a preset temperature window. The bq24170 charges one, two, or three cells (selected by CELL pin), and the bq24172 is adjustable for up to three series Li+ cells.
Device Information
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
bq2417
|
VQFN (24) | 5.50 mm × 3.50 mm |
bq2417
|
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