BQ24195LRGER

Part: bq24195, bq24195L — Texas Instruments

Type: Switch-Mode Battery Charge Management and System Power Path Management IC

Description: Highly-integrated switch-mode battery charge management and system power path management devices for single cell Li-Ion and Li-polymer batteries, offering 2.5-A (bq24195L) or 4.5-A (bq24195) fast charging, synchronous boost operation for 5.1 V at 1 A/2.1 A, and I2C control.

Operating Conditions:

• Supply voltage: 3.9–17 V
• Operating temperature: -40 to 85 °C
• Max input current: 3 A
• Max system output current: 4.5 A (bq24195), 2.5 A (bq24195L)

Absolute Maximum Ratings:

• Max VBUS voltage: 22 V
• Max BAT, SYS voltage (converter not switching): 6 V
• Max continuous output sink current (INT, STAT): 6 mA
• Max junction temperature: 150 °C
• Max storage temperature: 150 °C

Key Specs:

• Charge Efficiency: 92% at 2 A (bq24195L), 90% at 4 A (bq24195)
• Boost Efficiency: 94% at 1 A (bq24195L), 91% at 2.1 A (bq24195)
• Battery Discharge MOSFET Resistance: 12 mΩ
• Charge Voltage Regulation Accuracy: ±0.5% (0°C to 125°C)
• Charge Current Regulation Accuracy: ±7% (0°C to 125°C)
• Switching Frequency: 1.5 MHz
• Battery Discharge Current (High-Z Mode, no VBUS, BATFET disabled): 12 μA (typical, -40°C to 85°C)
• VBUS Over-Voltage Rising Threshold: 17.4 V (min)

Features:

• High Efficiency Switch Mode Charger
• Synchronous Boost Converter in Battery Boost Mode
• Highest Battery Discharge Efficiency with 12-mΩ Battery Discharge MOSFET
• Single Input USB-compliant/Adapter Charger with D+/D- Detection
• Narrow VDC (NVDC) Power Path Management
• Autonomous Battery Charging with or without Host Management
• High Accuracy Charge Voltage, Current, and Output Regulation
• Integrated Current Sensing, Bootstrap Diode, Internal Loop Compensation
• Safety features: Battery Temperature Sensing, Thermal Regulation, Over-Voltage/Over-Current Protection
• I2C Controlled

Applications:

• Power Bank for Smartphone, Tablet
• Tablet PC and Smart Phone
• Portable Audio Speaker
• Portable Media Players
• Internet Devices

Package:

• VQFN (24) 4.00 mm x 4.00 mm

• High Efficiency Switch Mode Charger
• -2.5-A (bq24195L) or 4.5-A (bq24195) Fast Charging
• -92% Charge Efficiency at 2 A, 90% at 4 A
• Synchronous Boost Converter in Battery Boost Mode
• -5.1 V at 1 A (bq24195L) or 5.1 V at 2.1 A (bq24195)
• -94% 5.1-V Boost Efficiency at 1 A, 91% at 2.1 A
• Highest Battery Discharge Efficiency with 12-m Ω Battery Discharge MOSFET up to 9-A Discharge Current
• Single Input USB-compliant/Adapter Charger
• -USB Host or Charging Port D+/D- Detection Compatible to USB Battery Charger Spec 1.2
• -Input Voltage and Current Limit Supports USB2.0 and USB3.0
• -Input Current Limit: 100 mA, 150 mA, 500 mA, 900 mA, 1.2 A, 1.5 A, 2 A and 3 A
• 3.9-V to 17-V Input Operating Voltage Range
• -Support All Kinds of Adapter with Input Voltage DPM Regulation
• Narrow VDC (NVDC) Power Path Management
• -Instant-on Works with No Battery or Deeply Discharged Battery
• -Ideal Diode Operation in Battery Supplement Mode
• 1.5-MHz Switching Frequency for Low Profile Inductor
• Autonomous Battery Charging with or without Host Management
• -Battery Charge Enable
• -Battery Charge Preconditioning
• -Charge Termination and Recharge
• High Accuracy (0°C to 125°C)
• -±0.5% Charge Voltage Regulation
• -±7% Charge Current Regulation
• -±7.5% Input Current Regulation
• -±2% Output Regulation in Boost Mode
• High Integration
• -Power Path Management
• -Synchronous Switching MOSFETs

1

bq24195, bq24195L

SLUSB97A -OCTOBER 2012-REVISED DECEMBER 2014

• Power Bank for Smartphone, Tablet
• Tablet PC and Smart Phone
• Portable Audio Speaker
• Portable Media Players
• Internet Devices

RGE Package 24-Pin VQFN With Exposed Thermal Pad (Top View)

Pin Functions

Pin Functions

VVBUS_UVLOZ < VVBUS < VACOV and VVBUS > VBAT + VSLEEP, TJ = -40°C to 125°C and TJ = 25°C for typical values unless other noted.

over operating free-air temperature range (unless otherwise noted)

A typical application consists of the device configured as an I 2 C controlled power path management device and a single cell Li-Ion battery charger for single cell Li-Ion and Li-polymer batteries used in a wide range of tablets and other portable devices. It integrates an input reverse-blocking FET (RBFET, Q1), high-side switching FET (HSFET, Q2), low-side switching FET (LSFET, Q3), and BATFET (Q4) between the system and battery. The device also integrates a bootstrap diode for the high-side gate drive.