X3100PT-V XICOR [Xicor Inc.], X3100PT-V Datasheet
X3100PT-V
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X3100PT-V Summary of contents
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A N PPLICATION OTE Cell Li-Ion BATTERY PACKS Preliminary Preliminary Information Cell Li-Ion Battery Protection and Monitor IC FEATURE • Software Selectable Protection Levels and ...
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X3100/X3101 – Preliminary Information PRINCIPLES OF OPERATION The X3100 and X3101 provide two distinct levels of functionality and battery cell protection: First, in Normal mode, the device periodically checks each cell for an over-charge and over-discharge state, while continuously watching ...
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X3100/X3101 – Preliminary Information Cell Voltage Balancing Control (CB1-CB4): These outputs are used to switch external FETs in order to perform cell voltage balancing control. This function can be used to adjust individual cell voltages (e.g. during cell charging). CB1–CB4 ...
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X3100/X3101 – Preliminary Information —Load Monitor (LMON) In Over-current Protection mode, a small test current (7.5µA typ.) is passed out of this pin to sense the load resistance. The measured load resistance determines whether or not the X3100 or X3101 ...
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X3100/X3101 – Preliminary Information Figure 1. Typical Application Circuit REV 1.1.8 12/10/02 www.xicor.com Characteristics subject to change without notice ...
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X3100/X3101 – Preliminary Information ( the order of 1MΩ should be used to ensure that PU the charge FET is completely turned OFF when OVP/ LMON The capacitors on the CELL1 in a ...
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X3100/X3101 – Preliminary Information Figure 2. Power Up Timing (Initial Power Up or after Sleep Mode) V SLR VCC 0V V RGO 0V Voltage Regulator Output Status (Internal Signal) VRGS Over-current Detection Status (Internal Signal) OCDS Status Register Bit 0 ...
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X3100/X3101 – Preliminary Information CONFIGURATION REGISTER The X3100 and X3101 can be configured for specific user requirements using the Configuration Register. Table 1. Configuration Register Functionality Bit(s) Name 0-5 – (don’t care) Switch Cell Charge Enable 6 SWCEN threshold function ...
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X3100/X3101 – Preliminary Information Table 8. Cell Charging Threshold Voltage Selection. Configuration Register Bits VCE1 VCE0 Cell Number Selection The X3100 is designed to operate with four (4) Li-Ion battery cells. The ...
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X3100/X3101 – Preliminary Information Figure 4. Writing to Configuration Register Power Up Data Recalled from Shadow EEPROM to SRAM Configuration Register (SRAM=Old Value) WCFIG (New Value) Configuration Register (Sram=New Value) Store (New Value Shadow EEPROM Power Down Power ...
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X3100/X3101 – Preliminary Information Current Sense Gain (CSG1, CSG0) These bits set the gain of the current sense amplifier. These are x10, x25, x80 and x160. For more detail, see section “Current Monitor Function” on page 20. Table 14. Current ...
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X3100/X3101 – Preliminary Information Bit 1 of the status register simply indicates whether or not the X3100 or X3101 is in over-discharge protection mode. Bit 2 of the status register (CCES+OVDS) indicates the status of two conditions of the X3100 ...
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X3100/X3101 – Preliminary Information over-charge and over-discharge protection circuitry is on for approximately 2ms in each 125ms period. Over- current monitoring is continuous. In monitor mode (see page 20) over-charge and over-discharge monitoring is also continuous. Over-charge Protection The X3100 ...
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X3100/X3101 – Preliminary Information Table 20. Over-charge Protection Mode—Event Diagram Description Event — Discharge FET is ON (UVP/OCP=V — Charge FET is ON (OVP/LMON=V [0,1) — All cell voltages (V — The device is in normal operation mode (i.e. not ...
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X3100/X3101 – Preliminary Information Over-discharge Protection If V < for a time exceeding T CELL UV said over-discharge state (Figure 6). In this instance, the X3100 and X3101 automatically switch the discharge FET OFF ...
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X3100/X3101 – Preliminary Information Figure 6. Over-discharge Protection Mode—Event Diagram VCC VCELL V UV UVP/OCP OVP/LMON RGO Event 0 Note 1: If SWEN=0 and V < then OVP/LMON stays high and charging is prohibited. CELL CE Note 2: ...
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X3100/X3101 – Preliminary Information Table 22. Over-discharge Protection Mode—Event Diagram Description (Continued) Event While device is in sleep (in over-discharge protection) mode: — The power to ALL internal circuits is switched OFF limiting power consumption to less than 1µA. (2,3) ...
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X3100/X3101 – Preliminary Information Over-Current Protection In addition to monitoring the battery cell voltages, the X3100 and X3101 continually monitor the voltage VCS (VCS –VCS ) across the current sense resistor VCS > V for ...
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X3100/X3101 – Preliminary Information Figure 8. Over-Current Protection Mode—Event Diagram Normal Operation Mode VCS UVP/OCP Event 0 1 Table 24. Over-Current Protection Mode—Event Diagram Description Event — Discharge FET is ON (OCP=Vss). Battery ...
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X3100/X3101 – Preliminary Information Table 24. Over-Current Protection Mode—Event Diagram Description (Continued) Event — The device detects the load resistance has risen above 250k — Voltages P+ and VCS — The test current from pin OVP/LMON is stopped (I [3] ...
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X3100/X3101 – Preliminary Information of four input resistors to Op Amp OP1. The feedback resistors remain constant. This ratio of input to feedback resistors determines the gain. Putting external resistors in series with the inputs reduces the gain of the ...
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X3100/X3101 – Preliminary Information can be executed only after times t time) and t (power up to write time) respectively. PUW IDLock is a programmable locking mechanism which allows the user to lock data in different portions of the EEPROM ...
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X3100/X3101 – Preliminary Information Table 30. X3100/X3101 Instruction Set Instruction Instruction Name Format* WREN 0000 0110 WRDI 0000 0100 EEWRITE 0000 0010 EEREAD STAT 0000 0101 EEREAD 0000 0011 WCFIG 0000 1001 WCNTR 0000 1010 RDSTAT 0000 1011 SET IDL ...
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X3100/X3101 – Preliminary Information EEPROM Write Sequence (EEWRITE) Prior to any attempt to write data into the EEPROM of the X3100 or X3101, the “Write Enable” latch must first be set by issuing the WREN instruction (See Table 30 and ...
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X3100/X3101 – Preliminary Information Figure 13. EEPROM Page Write (EEWRITE) Operation Sequence SCK EEWRITE Instruction SCK Data Byte ...
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X3100/X3101 – Preliminary Information EEPROM Read Sequence (EEREAD) When reading from the X3100 or X3101 EEPROM memory first pulled LOW to select the device. The 8- bit EEREAD instruction is transmitted to the X3100 or X3101, followed by ...
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X3100/X3101 – Preliminary Information Write Configuration Register (WCFIG) The Write Configuration Register (WCFIG) instruction updates the static part of the Configuration Register. These new values take effect immediately, for example writing a new Over-discharge voltage limit. However, to make these ...
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X3100/X3101 – Preliminary Information Read Status Register (RDSTAT) The Read Status Register (RDSTAT) command returns the status of the X3100 or X3101. The Status Register contains three bits that indicate whether the voltage regulator is stabilized, and if there are ...
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X3100/X3101 – Preliminary Information ABSOLUTE MAXIMUM RATINGS Symbol Storage temperature Operating temperature DC output current Lead temperature (soldering 10 seconds) VCC Power supply voltage VCELL Cell voltage Terminal voltage (Pins: SCK, SI, SO, CS, AS0, AS1, AS2, VCS1, V TERM1 ...
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X3100/X3101 – Preliminary Information OPERATING CHARACTERISTICS X3100 (Over the recommended operating conditions unless otherwise specified) Description 5V regulated voltage 5VDC voltage regulator current limit V supply current ( supply current ( supply current ( ...
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X3100/X3101 – Preliminary Information Description Over-current mode detection voltage (Default in Boldface) Over-current mode detection time Over-current mode release time Load resistance over-current mode release condition Cell charge threshold voltage X3100 wake-up voltage (For Vcc above this voltage, the device ...
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X3100/X3101 – Preliminary Information OPERATING CHARACTERISTICS X3101 (Over the recommended operating conditions unless otherwise specified) Description 5V regulated voltage 5VDC voltage regulator current limit I V supply current ( supply current ( supply current (3) CC ...
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X3100/X3101 – Preliminary Information Description Over-current mode detection voltage (Default in Boldface) Over-current mode detection time Over-current mode release time Load resistance over-current mode release condition Cell charge threshold voltage X3100 wake-up voltage (For Vcc above this voltage, the device ...
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X3100/X3101 – Preliminary Information POWER-UP TIMING Symbol (6) t Power-up to SPI read operation (RDSTAT, EEREAD STAT) PUR (6) t Power-up to SPI write operation (WREN, WRDI, EEWRITE, WCFIG, SET IDL, WCNTR) PUW1 (6) t Power-up to SPI write operation ...
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X3100/X3101 – Preliminary Information A.C. CHARACTERISTICS (Over the recommended operating conditions, unless otherwise specified.) SERIAL INPUT TIMING Symbol Parameter f Clock frequency SCK t Cycle time CYC t CS lead time LEAD t CS lag time LAG t Clock HIGH ...
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X3100/X3101 – Preliminary Information Serial Output Timing Symbol Parameter f Clock Frequency SCK t Output Disable Time DIS t Output Valid from Clock LOW V t Output Hold Time HO (11) t Output Rise Time RO (11) t Output Fall ...
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X3100/X3101 – Preliminary Information Analog Output Response Time Symbol t AO Output Stabilization Time (Voltage Source Change) VSC t AO Output Stabilization Time (Current Sense Gain Change) CSGO Control Outputs Response Time (UVP/OCP, OVP/MON, CB4 CB3, CB2, CB1, ...
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X3100/X3101 – Preliminary Information TYPICAL OPERATING CHARACTERISTICS Norm al Operating Current 150 125 100 75 50 -20 Tem perature X3100/X3101 Over Charge Trip Voltage (Typical) 4.40 4.35 4.30 4.25 4.20 4.15 -25 Temperature (Deg C) 4.2V Setting 4.3V Setting X3101 ...
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X3100/X3101 – Preliminary Information .026 (.65) BSC .377 (9.60) .385 (9.80) .0075 (.19) .0118 (.30) 0° – 8° .020 (.50) .030 (.75) Detail A (20X) See Detail “A” NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) REV 1.1.8 12/10/02 ...
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X3100/X3101 – Preliminary Information ORDERING INFORMATION Device LIMITED WARRANTY Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Xicor, Inc. makes no warranty, express, statutory, implied ...