LTC6803HG-1#3ZZTRPBF Linear Technology, LTC6803HG-1#3ZZTRPBF Datasheet
LTC6803HG-1#3ZZTRPBF
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LTC6803HG-1#3ZZTRPBF Summary of contents
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... For applications requiring individually addressable serial communications, see the LTC6803-2/LTC6803-4. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. SERIAL DATA ...
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LTC6803-1/LTC6803-3 ABSOLUTE MAXIMUM RATINGS + – Total Supply Voltage ( .................................75V – Input Voltage (Relative ............................................................ –0. C12 ........................................................ –0.3V to 75V Cn (Note 5) ......................... –0.3V to Min (8 • ...
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... LTC6803HG TEMP Full-Scale Voltage Range Range of Inputs Cn < 0.25% Gain Error 11, LTC6803IG Range of Inputs C0, C1 < 0.25% Gain Error, LTC6803IG Range of Inputs Cn < 0.5% Gain Error 11, LTC6803HG Range of Inputs C0, C1 < 0.5% Gain Error, LTC6803HG Error in Measurement of 125°C – 100k to V LOAD SPECIFICED TEMPERATURE RANGE – ...
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... LTC6803IG LTC6803HG + Current Into V Pin During Serial Communications, All Serial Port Pins at Logic “0” “0”, This Current is Added MODE S QS LTC6803IG LTC6803HG – + Current Out 43.2V, V Floating C12 (Note 8) V > 3V (Note 3) CELL Time Required to Measure 12 Cells Time Required to Measure 10 Cells ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER Voltage Mode Digital I/O V Digital Input Voltage High IH V Digital Input Voltage Low IL V Digital Output Voltage Low OL I Digital Input Current IN Current Mode ...
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LTC6803-1/LTC6803-3 TYPICAL PERFORMANCE CHARACTERISTICS + Cell 12 Measurement Error vs V 100 T = 25° 3.3V CELL 10 1 0.1 –0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6 0 – V (V) C12 680313 G04 ...
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TYPICAL PERFORMANCE CHARACTERISTICS ADC Normal Mode Rejection vs Frequency 0 –10 –20 –30 –40 –50 –60 –70 10 100 1k 10k 100k FREQUENCY (Hz) 680313 G13 Cell Input Bias Current During Standby and Hardware Shutdown 50 CELL INPUT = 3.6V ...
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LTC6803-1/LTC6803-3 TYPICAL PERFORMANCE CHARACTERISTICS V Output Voltage REF vs Temperature 3.070 3.068 3.066 3.064 3.062 3.060 3.058 5 REPRESENTATIVE UNITS 3.056 –50 – 100 TEMPERATURE (°C) 680313 G21 V Load Regulation REG 5 ...
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PIN FUNCTIONS To ensure pin compatibility with the LTC6802-1, the LTC6803-1 is configured such that the bottom cell input (C0) is connected internally to the negative supply voltage – The LTC6803-3 offers a unique pinout with an input ...
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LTC6803-1/LTC6803-3 PIN FUNCTIONS V (Pin 34 on LTC6803-1/ Pin 35 on LTC6803-3 ): Linear REG Voltage Regulator Output. This pin should be bypassed with a 1µF capacitor. The V pin is capable of supply- REG ing up to 4mA to ...
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BLOCK DIAGRAMS LTC6803-1 C12 5 S12 6 C11 – DIE TEMP LTC6803-3 C12 5 S12 6 C11 ...
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LTC6803-1/LTC6803-3 TIMING DIAGRAM SCKI SDI CSBI SDO OPERATION THEORY OF OPERATION The LTC6803 is a data acquisition IC capable of mea- suring the voltage of 12 series connected battery cells. An input multiplexer connects the batteries to a 12-bit delta-sigma ...
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OPERATION LTC6803 BATTERY CSBO CSBI POSITIVE SDOI SDO 350V SCKO SDI + SCKI V C12 V + MODE S12 GPIO2 C11 GPIO1 + S11 WDTB C10 TOS + S10 V REG REF S9 V TEMP2 ...
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LTC6803-1/LTC6803-3 OPERATION + when V = 44V. All circuits are turned off except the serial interface and the voltage regulator. For the lowest possible standby current consumption all SPI logic inputs should be set to logic 1 level. The LTC6803 ...
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OPERATION In some systems it may be desirable to allow discharging to continue during cell voltage measurements. The cell voltage ADC conversion commands STCVDC and STOWDC allow the discharge switches to remain on during cell voltage measurements. This feature allows ...
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LTC6803-1/LTC6803-3 OPERATION SERIAL PORT Overview The LTC6803 has an SPI bus compatible serial port. Several devices can be daisy chained in series. There are two sets of serial port pins, designated as low side and high side. The low side ...
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OPERATION Data Link Layer Clock Phase And Polarity: The LTC6803 SPI compatible interface is configured to operate in a system using CPHA = 1 and CPOL = 1. Consequently, data on SDI must be stable during the rising edge of ...
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LTC6803-1/LTC6803-3 OPERATION An example to calculate the PEC is listed in Table 1 and Figure 5. The PEC of the 1 byte data 0x01 is computed as 0xC7 after the last bit of the byte clocked in. For multiple byte ...
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OPERATION LTC6803-1/LTC6803-3 680313f 19 ...
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LTC6803-1/LTC6803-3 OPERATION CSBI SCKI SDI SDO Figure 6. Transmission Format (ADC Conversion and Poll) CSBI SCKI SDI SDO Figure 7. Transmission Format (PLADC Conversion or PLINT) Toggle Polling: Toggle polling allows a robust determina- tion both of device states and ...
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OPERATION Table 2. Protocol Key PEC Packet Error Code N Number of Bits ... Continuation of Protocol Table 3. Broadcast Poll Command 8 8 Command PEC Table 4. Broadcast Read Command PEC Data Byte Low Table 5. ...
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LTC6803-1/LTC6803-3 OPERATION Table 6. Command Codes and PEC Bytes (continued) COMMAND DESCRIPTION Start Open-Wire ADC Conversions and Poll Status Start Temperature ADC Conversions and Poll Status Poll ADC Converter Status Poll Interrupt Status Start Diagnose and Poll Status Read Diagnostic ...
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OPERATION Table 7. Configuration (CFG) Register Group REGISTER RD/WR BIT 7 CFGR0 RD/WR WDT CFGR1 RD/WR DCC8 CFGR2 RD/WR MC4I CFGR3 RD/WR MC12I CFGR4 RD/WR VUV[7] CFGR5 RD/WR VOV[7] Table 8. Cell Voltage (CV) Register Group REGISTER RD/WR BIT 7 ...
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LTC6803-1/LTC6803-3 OPERATION Table 10. Temperature (TMP) Register Group REGISTER RD/WR BIT 7 TMPR0 RD ETMP1[7] TMPR1 RD ETMP2[3] TMPR2 RD ETMP2[11] ETMP2[10] TMPR3 RD ITMP[7] TMPR4 RD NA Table 11. Packet Error Code (PEC) REGISTER RD/WR BIT 7 PEC RD ...
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OPERATION Table 13. Memory Bit Descriptions (continued) NAME DESCRIPTION MCxI Mask Cell x Interrupts CxV Cell x Voltage* CxUV Cell x Undervoltage Flag CxOV Cell x Overvoltage Flag ETMPx External Temperature Measurement* THSD Thermal Shutdown Status REV Revision Code ITMP ...
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LTC6803-1/LTC6803-3 OPERATION CSBI SCKI SDI 12) Read Cell Voltage Registers (12 Cell Mode) 1. Pull CSBI low 2. Send RDCV command and PEC 3. Read CVR00 byte of bottom device, then CVR01 (B), CVR02 (B), ...
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APPLICATIONS INFORMATION DIFFERENCE BETWEEN THE LTC6803-1 AND LTC6803-3 The only difference between the LTC6803-1 and the LTC6803-3 is the bonding of the V – V and C0 are separate signals on every LTC6803 die. In the LTC6803-1 package, the V ...
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LTC6803-1/LTC6803-3 APPLICATIONS INFORMATION + MUX + – Figure 10. Open Connection + ...
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APPLICATIONS INFORMATION discharge resistor to the cell, and the gate terminal to the S output pin, as illustrated in Figure 12. Si2351DS + 3. 680313 F12 Figure 12. External Discharge FET Connection (One Cell Shown) POWER DISSIPATION AND ...
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LTC6803-1/LTC6803-3 APPLICATIONS INFORMATION NEXT HIGHER GROUP OF 7 CELLS + + + + + + + NEXT LOWER GROUP OF 7 CELLS Figure 13. Monitoring 7 Cells with the LTC6803-1/LTC6803-3 Table 15. LTC6803-1/LTC6803-3 Failure Mechanism Effect Analysis SCENARIO EFFECT Cell ...
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APPLICATIONS INFORMATION situation might occur in a modular battery system during initial installation or a service procedure. The daisy-chain ports are protected from the reverse potential in this sce- nario by external series high voltage diodes required in the upper ...
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LTC6803-1/LTC6803-3 APPLICATIONS INFORMATION For sensors that require higher drive currents, a buffer op amp may be used as shown in Figure 17. Power for the sensor is actually sourced indirectly from the V pin in this case. Probe loads up ...
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APPLICATIONS INFORMATION ADDING CALIBRATION AND FULL-STACK MEASUREMENTS The general purpose V ADC inputs may be used to digi- TEMP tize any signals from with accuracy corresponding closely with that of the cell 1 ADC input. One useful ...
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LTC6803-1/LTC6803-3 APPLICATIONS INFORMATION the resistive loading on the cell group when the IC enters standby mode (i.e., when WDTB goes low). An LT6004 micropower operational amplifier section is shown for buffering the divider signal to preserve accuracy. This circuit has ...
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APPLICATIONS INFORMATION SUPPLY DECOUPLING IF BATTERY-STACK POWERED As shown in Figure 23, the LTC6803-3 can have filtering + – on both V and differential bypassing to the cell group potentials is recommended. The Zener suppresses overvoltages from ...
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LTC6803-1/LTC6803-3 APPLICATIONS INFORMATION Figure 25. Hardware Shutdown Circuit Reduces Total Supply Current of LTC6803 to Less Than 1nA INPUT 5V 90mA TYP 5V 10k 10µF 220pF 1µF 33.2k GND Figure 26. LTC6803 Powered by Isolated Power Supplies 36 TP0610K + ...
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APPLICATIONS INFORMATION the LTC6803-1 and LTC6803-3 were chosen to facilitate this physical separation. There is no more than 5.5V between any two adjacent pins. The package body is used to separate the highest voltage (e. g., 43.2V) from the low- ...
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LTC6803-1/LTC6803-3 APPLICATIONS INFORMATION Other advantages of delta-sigma converters are that they are inherently monotonic, meaning they have no missing codes, and they have excellent DC specifications. Converter Details The LTC6803’s ADC has a second order delta-sigma modulator followed by a ...
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... ONE ANOTHER WITHIN 0.08mm AT SEATING PLANE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... SDO* TO HOST µP OR SDI NEXT LTC6803-1 100 SCKI (SIGNAL NOT USED FOR INTER-IC COMMUNCATION) 10k NTC2 100 10nF 1/2 LT6004 2 – 10k 7 NTC1 1/2 LT6004 6 – 100 4 10nF 680313 TA02 LT 0211 • PRINTED IN USA LINEAR TECHNOLOGY CORPORA TION 2011 680313f ...