1 Features

• High-Efficiency Switched-Mode Charger With Separate Power Path
• Startup System From Deeply Discharged or Missing Battery
• USB Charging Compliant
  • Selectable Input Current Limit of 100 mA,
    500 mA, 900 mA, 1.5 A, and 2 A
• BC1.2 Compatible D+, D– Detection
• In Host Mode (After I²C Communication Starts and Before Watchdog Timer Times Out)
  • Programmable Battery Charge Voltage, V_BATREG
  • Programmable Charge Current (I_CHG)
  • Programmable Input Current Limit (I_LIM)
  • Programmable Input Voltage-Based Dynamic Power Management Threshold, (V_{IN_DPM})
  • Programmable Input Overvoltage Protection Threshold (V_OVP)
  • Programmable Safety Timer
• Resistor Programmable Defaults for:
  • I_CHG up to 2 A With Current Monitoring Output (ISET)
  • I_LIM up to 2 A With Current Monitoring Output (ILIM)
  • V_{IN_DPM} (VDPM)
• Watchdog Timer Disable Bit
• Integrated 4.9 V, 50 mA LDO
• Complete System-Level Protection
  • Input UVLO, Input Overvoltage Protection (OVP), Battery OVP, Sleep Mode, VIN_DPM
  • Input Current Limit
  • Charge Current Limit
  • Thermal Regulation
  • Thermal Shutdown
  • Voltage-Based, JEITA Compatible NTC Monitoring Input
  • Safety Timer
• 22 V Absolute Maximum Input Voltage Rating
• 10.5 V Maximum Operating Input Voltage
• Low R_DS(on) Integrated Power FETs for a Charging Rate of up to 2 A
• Open-Drain Status Outputs
• Synchronous Fixed-Frequency PWM Controller Operating at 3 MHz for Small Inductor Support
• AnyBoot Robust Battery Detection Algorithm
• Charge Time Optimizer for Improved Charge Times at Any Given Charge Current
• 2.40-mm x 2.00-mm 30-Ball DSBGA and 4-mm x 4-mm 24-Pin QFN Packages

2 Applications

• Mobile Phones and Smart Phones
• MP3 Players
• Portable Media Players
• Handheld Devices

3 Description

The bq24250, bq24251, and bq24253 are highly integrated single-cell Li-Ion battery chargers and system power-path management devices targeted for space-limited, portable applications with high-capacity batteries. The single-cell charger has a single input that operates from either a USB port or an AC wall adapter for a versatile solution.

1. For all available packages, see the orderable addendum at the end of the datasheet.

4 Revision History

Changes from G Revision (January 2015) to H Revision

• Changed 20 V Maximum Input Voltage Rating Feature bullet to 22 V to match Absolute Maximum Ratings tableGo
• Changed Figure 11 and Figure 12 image X-axis labels from "Temperature (fC)" to "Temperature (°C)" Go

Changes from F Revision (December 2014) to G Revision

• Deleted Lead temperature (soldering) spec from Absolute Maximum Ratings table. See Package Option Addendum. Go
• Changed table heading from Handling Ratings to ESD Ratings. Moved T_stg spec to the Absolute Maximum Ratings tableGo
• Changed the test condition of IBAT- Battery discharge current in SYSOFF mode: Removed “(BAT, SW, SYS)”Go
• Added spec for I_IN/I_ILIM ratio Go

Changes from E Revision (December 2013) to F Revision

• Added Handling Rating table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section Go
• Deleted the minimum spec for RILIM-SHORT and changed the typical value to 55 ohm and maximum spec to 75 ohm.Go
• Changed V_LDO values to (4.65, 4.85, 5.04) and added description in the second column “bq24250”. Added one row below for “bq24251 and bq24253” and added values (4.65, 4.95, 5.25).Go

Changes from D Revision (July 2013) to E Revision

• Changed VDPM pin desctiption from "......sets a default of 4.36V" to ".......sets a default of 4.68V" Go
• Changed text string in the V_{IN_DLM} settings description from: "The ISET resistor must be floated in order to avoid an internal fault." to: "The ISET resistor must be connected in order to avoid an unstable charging state."Go
• Changed text string in the Sleep Mode description from: "...sends a single 256μs pulse is sent on the STAT and INT outputs..." to: "...sends a single 256µs pulse on the STAT and INT outputs..."Go
• Changed text string in the Input Over-Voltage Protection description from: "...turns the battery FET, sends a single 256μs pulse is sent on the STAT and INT outputs..." to "...turns the battery FET, sends a single 256μs pulse on the STAT and INT outputs...."Go
• Added Serial Interface DescriptionGo
• Changed Register #3 description, B1(4)(5) Name from: "USB_DET_1/EN1" to: "USB_DET_1/EN2"Go
• Changed Register #3 description, B0(LSB) Name from: "USB_DET_0/EN0" to: "USB_DET_0/EN1"Go
• Changed Register #3 description, B1(4)(5) and B0(LSB) FUNCTION entries from: "Return USB detection result or pin EN1/EN0 status –" to "Return USB detection result or pin EN2/EN1 status –" ; changed 00 - DCP detected / from: "EN1=0, EN0=0" to: "EN2=0, EN1=0"; changed 01 - CDP detected / from: "EN1=0, EN0=1" to: "EN2=0, EN1=1"; changed 10 - SDP detected / from: "EN1=1, EN0=0" to: "EN2=1, EN1=0"; and changed 11 - Apple/TT or non-standard adaptor detected / from: "EN1=1, EN0=1" to: "EN2=1, EN1=1", respectively.Go

Changes from C Revision (June 2013) to D Revision

• Changed VDPM Pin Description regulator reference from "1.23V" to "1.2" Go
• Changed text string in D+/D- pin description from "....will remain low..." to "...will remain high impedance..."Go
• Added SCL and SDA to Pin Voltage Range spec in the Absolute Maximum Ratings tableGo
• Changed spec conditions for Output Current (Continuous), from "IN, SW, SYS, BAT" to "IN, SYS, BAT " in ABS Max Ratings table Go
• Changed Figure 20Go
• Added text to NTC Monitor description for clarification.Go
• Added text to Safety Timer description for clarification.Go
• Changed Fault Condition from "Input Good" to "Input Fault & LDO Low" in Fault Conditions table.Go
• Changed Register #2 Reset state from "1010 1100" to "xxxx 1100"Go
• Changed Register #4 Reset state from "0000 0000" to "1111 1000"Go
• Changed Bit B7, B6, B5, B4, B3 FUNCTION description from "(default 0)" to "(default 1)"Go
• Changed Register #4 Footnote (1) text from "...current is 500ma...." to " .....current is external.."Go
• Changed TS_EN description from "When set to a ‘1' the TS function is disabled ....." to "When set to a ‘0’, the TS function is disabled..."Go
• Added text to TS_STAT description for clarification.Go
• Changed Register #7, Bit B3 FUNCTION description from "...if TERM is true or EN_PTM is true..." to "if TERM is true or Force PTM s true..."Go

Changes from B Revision (May 2013) to C Revision

• Deleted PREVIEW status note from devices bq24250YFF, bq24251YFF, bq24251RGE, and bq24253RGE Go

Changes from A Revision (March 2013) to B Revision

• Added PREVIEW status to devices in the Ordering Information table, except the bq24250RGER and bq24250RGETGo

Changes from * Revision (October 2012) to A Revision

• Changed From: Product Brief To: Full data sheetGo
• Added Typical Characteristics graphsGo
• Changed Equation (3)Go
• Changed text in the F/S Mode Protocol section from "...to either transmit data to the slave (R/W bit 1) or receive data from the slave (R/W bit 0" to "...to either transmit data to the slave (R/W bit 0) or receive data from the slave (R/W bit 1)" for clarification.Go