PS501

Output Current :
Packaging :
Battery Type : Li-Ion, Li-Poly
Maximum Operating Temperature : + 85 C
Minimum Operating Temperature : - 20 C
Package / Case : SSOP-28
Output Voltage : 0.6 V
Operating Supply Voltage : 5.6 V to 18 V


Features:

• Single chip solution for rechargeable battery management
• Footprint compatible with PS401
• SMBus 1.1 and SBData 1.1 compatible
• Precise capacity reporting for Lithium Ion and Lithium Polymer battery chemistries
• Embedded PowerSmart^® patented algorithms contained in customizable on-chip 16-Kbyte Flash memory
• User configurable and "learned" parameters
stored in on-chip 256 x 8 EEPROM
• Algorithms and parameters fully field reprogrammable via SMBus interface
• Integrating sigma-delta A/D converter with 9 to 16-bit programmable resolution which accurately measures:
- Current through sense resistor
- High-voltage (18V) battery cells directly connected to VCELL inputs
- Temperature measurement from on-chip sensor or optional external thermistor
• Integrated precision silicon time base
• Twelve individually programmable input/output pins that can be assigned as charge control I/O, secondary safety function I/O, SOC LED output or general purpose I/O
- Two of the twelve I/Os are high voltage, capable for direct drive of Charge and Safety FETs
• On-chip regulator generates precision digital and analog supply voltages directly from pack voltage
• Supports direct connection to 2 to 4-cell Lithium packs
• Flexible power operating modes:
- Run: Continuous operation
- Sample: Periodic measurements at programmable intervals
- Sleep: Shutdown mode due to low voltage. Power consumption less than 25 A.
- Shelf-Sleep: Shuts off PS501 power consumption for pack storage with automatic wake-up on pack insertion. Power consumption is less than 1 A.
• Integrated Reset Control
- Power-on Reset
- Watchdog Timer Reset
- Brown-out Detection Reset

Pinout




Description

The PS501 is a a fully field reprogrammable single chip solution for rechargeable battery management. Figure 1-1 is an internal block diagram highlighting the major architectural elements described below.