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Protector
R2
100kW
OptionalBatteryMonitor/GasGauge
Pack+
Pack-
HDQ
1 2
3
4
5
V
C
C
V
SS
HDQ
SRN
SRP
GPIO
BAT
R3
5kW
bq26150
R1
0.02 W
0.01
Fm
bq26150
www.ti.com
SLUS641B –JANUARY 2005–REVISED NOVEMBER 2009
BATTERY PACK SECURITY AND AUTHENTICATION IC
FOR PORTABLE APPLICATIONS ( bqSECURE™)
Check for Samples: bq26150
1
FEATURES • Small 5-Pin SC 70 package
2
• Provides Authentication of Battery Packs
APPLICATIONS
Through a Programmable CRC With a 96-bit
• Cellular Phones
Unique Device ID
• PDA and Smart Phones
• 16 Bytes of User-Programmable Nonvolatile
• MP3 Players
Memory
• Digital Cameras
• 12.5 KV IEC ESD Protection on HDQ Input
• Internet Appliances
• Internal Time-Base Eliminates External Crystal
• Handheld Devices
Oscillator
• Low-Power Operating: <30 μA
• Single-Wire HDQ Interface
• Powered Directly From the Communication
Bus
• Pass-Through HDQ Version Supports Existing
Packs With Gas Gauges
DESCRIPTION
The bq26150 provides a method to authenticate battery packs, ensuring that only packs manufactured by
authorized sub-contractors are used in the end application. The bq26150 uses a 96-bit unique device ID, device
unique 16-bit seed, and a 16-bit device specific CRC to provide security. The device ID, CRC seed, and CRC
polynomial coefficients are stored securely in each bq26150 device, allowing the host to authenticate each pack.
The bq26150 communicates to the system over a simple one-wire, bidirectional serial interface. The 5 kbits/s
HDQ bus interfaces reduces communications overhead in the external microcontroller. The bq26150 also uses
the HDQ bus to charge an external capacitor that provides power to the bq26150.
TYPICAL APPLICATION
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2bqSECURE is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2005–2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
OBSOLETE DEVICE
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