BQ40Z60_16 Datasheet, PDF (1/47 Pages) Texas Instruments – Programmable Battery Management Unit

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bq40z60
SLUSAW3C – DECEMBER 2014 – REVISED JULY 2015
bq40z60 Programmable Battery Management Unit
1 Features
•1 Fully Integrated 2-Series to 4-Series Cell Li-Ion or
Li-Polymer Battery Management Unit
• Input Voltage Range on Pack+: 2.5 V to 25 V
• Battery Charger Efficiency > 92%
• Battery Charger Operation Range: 4 V to 25 V
• Battery Charger, 1-MHz Synchronous Buck
Controller for External NFETs
– Soft Start to Limit In-Rush Current
– Current Limit Protection for External Switches
– Programmable Charging
– Supports JEITA/Enhanced Charging Modes
• Fuel Gauging
– High Resolution 16-Bit Integrator for Coulomb
Counter
– ADC, 16-Bit for Precision V, I, and T
Measurements with 16-Channel Multiplexer
– Support for Simultaneous CC and ADC
Sampling (Power Conversion)
– Supports Two-Wire SMBus v2.0 Interface with
Accelerated 400-kHz Programming Option
– SHA-1 Hash Message Authentication Code
(HMAC) Responder for Increased Battery Pack
Security
– Split Key (2 × 64) Stored in Secure Memory
– Supports Field Updates
• AFE Protection
– Programmable Current Protection
– Overcurrent in Discharge
– Short-Circuit Current in Charge
– Short-Circuit Current in Discharge
• N-FET High-Side Protection FET Drive
• Support for Four LEDs
• Thermistor inputs for NTC
• Compact 32-Pin QFN Package (RHB)
2 Applications
• Notebooks, Ultrabooks, Netbooks, Tablets,
UMPCs
• Medical and Test Equipment
• Portable Instrumentation
3 Description
The Texas Instruments bq40z60 device is a
Programmable Battery Management Unit that
integrates battery charging control output, gas
gauging, and protection for completely autonomous
operation of 2-series to 4-series cell Li-Ion and Li-
Polymer battery packs. The architecture enables
internal communication between the fuel gauging
processor and battery charger controller to optimize
the charging profile based on the external load
conditions and power path source management
during load transients and adaptor current limitations
in the system. The charging current efficiency is
scalable for power transfer based on the external
components, such as the NFETs, inductor, and
sensing resistor.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
bq40z60
VQFN (32)
5.00 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Simplified Schematic
Power
Adapter
FUSE
SMBD
SMBC
ALERT/BTP
SYSPRES
SMBD
SMBC
ALERT/BTP
SYSPRES
Pack–
AFEFUSE
DSG
CHG
BAT
VC4
VC3
VC2
VC1
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.