M61040FP

M61040FP Smart Battery Protection and Monitoring IC REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Description The M61040FP is intended to be used as SB: Smart Battery. All functions needed for SB are packed to this M61040FP. The combination use with microcomputer such as M37515 will give various functions such as a detection or calculation of SB remaining capacity. Over current detection circuit dedicated in M61040FP will give safety FET on/off control independent from microcomputer control. The amp gain of charge/discharge current detection circuit is controlled by microcomputer, therefore the accuracy of SB's remaining capacity detection becomes better than before. The reset circuit and the linear regulator for VCC/Vref of microcomputer are dedicated in M61040FP. So this will help easy design of power circuit design of SB. Features • • • • • Built-in high gain op-amps for monitoring charge/discharge current Built-in over current detection circuit for FET protection All FETs are controlled by microcomputer Various powers saving function to reduce total power dissipation High input voltage device (absolute maximum rating: 33 V) Application Smart battery system Block Diagram VIN12 CFOUT PFOUT DFOUT CIN VCC Vreg Vref Series Regulator Regulator ON/OFF and Over current detection circuit Delay circuit Reset Reset circuit VIN1 CK DI CS Battery cell Serial to Parallel conversion circuit voltage detection VIN2 + − Gain selector circuit VIN3 ANALOG OUT Multi-plexer circuit Offset control + − VIN4 Battery cell 1-4 voltage analog output Charge/Discharge current detection circuit GND VIN11 VIN10 REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 1 of 24 M61040FP Pin Arrangement M61040FP VCC CFOUT PFOUT DFOUT VIN1 VIN2 VIN3 VIN4 VIN12 GND 1 2 3 20 Vreg 19 Vref 18 Reset 17 DI 16 CK 15 CS 14 ANALOG OUT 13 CIN 12 VIN11 11 VIN10 4 5 6 7 8 9 10 (Top view) Outline: 20P2X-A Pin Description Pin No. 5 6 7 8 9 13 11 12 1 10 20 19 18 14 4 2 17 16 15 3 Pin Name VIN1 VIN2 VIN3 VIN4 VIN12 CIN VIN10 VIN11 VCC GND Vreg Vref RESET ANALOG OUT DFOUT CFOUT DI CK CS PFOUT Functions Battery 1 + voltage input Battery 1 – voltage and battery 2 + voltage input Battery 2 – voltage and battery 3 + voltage input Battery 3 – voltage and battery 4 + voltage input Monitoring charger is connected or not Connect capacitor for over current detection delay Charge/discharge current monitor input and connects charge/discharge current sense resistor Charge/discharge current monitor input and connects charge/discharge current sense resistor Power source pin. Power from charger or battery Ground Linear-regulator output for microcomputer Vreg voltage output for Vreg of microcomputer, Max 200 µA/5 V Reset signal output to RESET of microcomputer Various analog signal outputs to AD-input of microcomputer Discharge FET-drive output. The driver is turned off when over current detected. Charge FET-drive output. The driver is turned off by microcomputer. Input of 6-bit length serial data from microcomputer Input of shift clock from microcomputer. DI's input data is latched by low-to-high edge of this CK During low signal input to this CS, data input to DI is enabled. Pre-charge FET-drive output. The driver is turned off by microcomputer. REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 2 of 24 M61040FP Absolute Maximum Ratings Item Absolute maximum rating Supply voltage Power dissipation Operating temperature range Storage temperature range Symbol Vabs VCC Pd Topr1 Tstg Ratings 33 30 750 –20 to +85 –40 to +125 Unit V V mW °C °C Electrical Characteristics (Ta = 25°C, VCC = 14 V, unless otherwise noted) Item Total Supply voltage Supply current 1 Supply current 2 Supply current (at power save mode) Supply current (at power down mode) Regulator Output voltage Input and output voltage difference Linear regulation Load regulation Input voltage Reference voltage Output voltage Load stability Over current inhibit detection voltage 1 Over current inhibit detection voltage 2 Over current inhibit detection delay time 1 Over current inhibit detection delay time 2 Battery voltage detection Input offset voltage Voltage gain 1 Output source current Output sink current Detection voltage of battery cell Voff1 Gamp1 Isource1 Isink1 Vref-Voff1 31 0.99 150 150 4.45 208 1.0 — — — 385 1.01 — — — mV — µA µA V 5 5 10 10 5, 6 Tvch 150 250 350 µs 8 Tvcl Vch Vcc 3 × 0.6 7 Vcc 3 10 Vcc 3 × 1.4 15 V ms 8 5 Load short detection CICT = 0.01 µF ∆Vout10 ∆Vout20 VIN0 Vref ∆Vout21 Vcl — — — 4.818 — VCL – 0.02 100 30 — 4.85 5 0.2 200 45 30 4.917 45 VCL + 0.02 mV mV V V mV V 4 4 8 3 3 VCC = 6.2 to 24 V, Iout = 20 mA VCC = 6.2 V, Iout = 50 µA to 20 mA VCC voltage Iout = 200 µA VCC = 6.2 V, Iout = 50 to 200 µA Over current detection Vreg Vdif0 5.145 — 5.2 0.3 5.295 0.8 V V 3 3 Iout = 20 mA Iout = 20 mA Ipd — — 0.5 µA 7 Symbol VCC Isup1 Isup2 Ips Min — 105 65 35 Typ — 200 120 60 Max 30 280 165 85 Unit V µA µA µA 7 7 7 Voltage monitor, V/R, reset ON, current monitor ON Voltage monitor, V/R, reset ON, current monitor OFF Regulator ON, non-loading, reset circuit ON, others OFF All operation stop, VIN12 = GND Circuit Test Conditions REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 3 of 24 M61040FP Item Charge/ discharge current detection Input offset voltage Voltage gain 21 Voltage gain 22 Voltage gain 23 Output source current Output sink current Interface DI input H voltage DI input L voltage CS input H voltage CS input L voltage CK input H voltage CK input L voltage Reset Detection voltage1 Release voltage1 Conditioning circuit VIN1 resistor VIN2 resistor VIN3 resistor VIN4 resistor Symbol Voff2 Gain21 Gain22 Gain23 Isource2 Isink2 VDIH VDIL VCSH VCSL VCKH VCKL Vdet– Vdet+ RINV1 RINV2 RINV3 RINV4 Min 0.2 38.4 96 192 150 150 3.5 0 3.5 0 3.5 0 3.045 4.16 4.4 4.4 4.4 4.4 Typ 2 40 100 200 — — — — — — — — 3.25 4.2 12 12 12 12 Max 3.8 41.6 104 208 — — Vreg 0.5 Vreg 0.5 Vreg 0.5 3.475 4.27 27 27 27 27 Unit V V V V µA µA V V V V V V V V kΩ kΩ kΩ kΩ Circuit 5 5 5 5 9 9 1 1 1 1 1 1 2 2 6 6 6 6 Test Conditions Gain = 200 selected Reference period CK TSDI THDI DI TSCS CS THCS Figure 1 Interface Timing REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 4 of 24 M61040FP Operation Description M61040 is developed for intelligent Li-ion battery pack such as SB in SBS. M61040 is suitable for smart battery. • SBS: Smart Battery System introduced by Intel and Duracell • SB: Smart Battery which contains 3 or 4 series Li-ion battery cells. All analog circuits are included to M61040. Therefore pair using with microcomputer such as M37515 and small additional parts will give various functions such as battery remaining capacity detection. All functions are described as follows: 1. Voltage detection circuit of each Li-ion battery cells M61040 can output each battery cell's voltage of 3 or 4 series connection. Built-in buffer amplifier is monitoring each battery voltage. Microcomputer can adjust the offset voltage. 2. Charge/discharge current detection circuit In SBS, remaining capacity check function (Gas-gage function) is necessary. To calculate accurate remaining capacity, microcomputer must get charge/discharge current periodically. Accurate charge/discharge current of external sense register is monitored by built-in amp. The charge/discharge current is converted to voltage value through the accurate sense resistor. Output gain can be controlled by microcomputer. Off-set voltage can be set lower by external parts, therefore dynamic range of microcomputer's A to D converter will widen. 3. Over current detection circuit M61040 contains over current detection circuit. The discharging FET is turned off to stop discharging and it continues for the over current detection delay time (tIOV1) or longer, if the discharging current becomes equal to or higher than a specified value. It is necessary for safety of Li-ion battery pack. Delay time is set by external capacity connected to CIN. Also the voltage of CIN shows detection or NOT detection of over current. Over current detection is controlled independently by this M61040's built-in hardware NOT by microcomputer's software control. 4. Series regulator, reference voltage M61040 contains low drop out series regulator. Microcomputer in SB does not need any additional voltage regulator, Max 20 mA/5 V. Also M61040 gives very accurate reference voltage as 4.85 V for Vref voltage for microcomputer's A to D converter. 5. Reset circuit for microcomputer Vreg output voltage is checked by reset circuit of M61040. Therefore, lower voltage of Vreg issues RESET signal to stop mull-function of microcomputer. Also, lower voltage after long time's left issues RESET signal to stop mullfunction of microcomputer. This function is useful for safety of long time's left battery. When charger is connected to SB, this circuit will check Vreg voltage, so if Vreg voltage is NOT enough high, this circuit remains low as for RESET signal to microcomputer. 6. Power save function M61040FP contains power save function to control several supply current. The function and control method are shown as table 1. The function of battery voltage detection circuit, charge/discharge detection circuit, over current detection circuit can be stopped as the need arises. Table 1 Control Method Software control (through serial I/F) Battery Voltage Detection Circuit Charge/Discharge Detection Circuit Each function can be ON/OFF separately. Over Current Detection Circuit REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 5 of 24 M61040FP  Enter power down mode Microcomputer issues shot-down command to M61040 after microcomputer detects that battery voltage is too low. After this command, the DFOUT pin is set to "high" and the VIN12 pin is pulled down by internal resistor to be set "low" and series regulator are turned off. In the power down mode, the M61040 operation is impossible. And CFOUT, DFOUT and PFOUT pins are set to "high". (In this situation, both charging and discharging are forbidden.) At this time, supply current becomes Max 1.0 µA, so drops of battery voltage is prevented. VIN12 9 1 VCC 2 CFOUT 3 PFOUT 4 DFOUT GND level in discharging Vreg 20 Vref 19 Series Regulator Control signal from I/F circuit VIN1 5 M61040FP RESET 18 Regulator ON/OFF control reset circuit CK 16 DI 17 CS 15 Serial to Parallel conversion circuit Figure 2 Function after Detecting Over-discharge  Resume from power down mode After entering power down mode, the series regulator will begin operation when charger is connected (VIN12 pin is high). The RESET will output low to high signal when Vreg is over reset level voltage. Microcomputer will begin operation and send command to resume M61040 from power down mode. 7. Conditioning circuit M61040 have a discharge circuit of each cells. It is available for drop of cell voltage for safety purpose. And to shorten the difference voltage among the cells. It can extend the battery pack life. REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 6 of 24 M61040FP Measurement Circuit CFOUT VCC 14 V VIN1 VIN2 VIN3 VIN4 GND VIN10 VIN11 TEST0 PFOUT DFOUT VIN12 VREG VREF RESET IDI ICK ICS 5V M61040FP DI CK CS ANALOG OUT TEST1 CIN A A A Circuit 1 CFOUT VCC VIN1 VIN2 VIN3 VIN4 GND VIN10 VIN11 TEST0 PFOUT DFOUT VIN12 VREG VREF RESET 1 MΩ V M61040FP DI CK CS ANALOG OUT V TEST1 CIN Circuit 2 CFOUT VCC VIN1 PFOUT DFOUT VIN12 VREG VREF RESET 4.7 µF V VIN2 VIN3 VIN4 GND VIN10 VIN11 TEST0 TEST1 M61040FP V fl DI CK CS ANALOG OUT CIN Circuit 3 REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 7 of 24 M61040FP 4.7 µF CFOUT PFOUT DFOUT VIN12 VREG VCC VIN1 VIN2 VIN3 VIN4 GND VIN10 VIN11 TEST0 TEST1 M61040FP 5V VREF RESET DI CK CS ANALOG OUT CIN V fl Circuit 4 V CFOUT PFOUT DFOUT VIN12 VREG VREF RESET VCC V1 V2 V3 V4 VIN1 VIN2 VIN3 VIN4 GND VIN10 VIN11 M61040FP 4.7 µF DI CK CS ANALOG OUT Data Input 0.5 V↔3.5 V V TEST0 TEST1 CIN V fl Circuit 5 I1 V1 A CFOUT VCC PFOUT DFOUT VIN12 VREG VREF RESET M61040FP DI CK CS ANALOG OUT TEST0 TEST1 CIN Data Input 0.5 V↔3.5 V I2 A VIN1 VIN2 VIN3 4.7 µF V2 I3 A VIN4 GND VIN10 V3 I4 A VIN11 V4 Circuit 6 REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 8 of 24 M61040FP Measuring Ipd: ON Except above : OFF Ipd, Ips, Isup2, Isup1 CFOUT PFOUT DFOUT VIN12 VREG VREF RESET M61040FP DI CK CS ANALOG OUT TEST0 TEST1 CIN Measuring Ipd: ON Except above : OFF A VCC VIN1 VIN2 VIN3 VIN4 GND VIN10 VIN11 Data Input 0 V↔5 V Circuit 7 V CFOUT PFOUT DFOUT VIN12 VREG VREF RESET M61040FP DI CK CS ANALOG OUT TEST0 TEST1 CIN VCC 14 V VIN1 VIN2 VIN3 VIN4 GND VIN10 VIN11 V 4.7 µF Circuit 8 CFOUT PFOUT DFOUT VIN12 VREG VREF RESET VCC 14 V VIN1 VIN2 VIN3 VIN4 GND VIN10 VIN11 TEST0 TEST1 M61040FP 4.7 µF DI CK CS ANALOG OUT CIN Data Input 0.5 V↔3.5 V Isink A Isource Circuit 9 REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 9 of 24 M61040FP CFOUT PFOUT DFOUT VIN12 VREG VREF RESET VCC V1 V2 V3 V4 VIN1 VIN2 VIN3 VIN4 GND VIN10 VIN11 TEST0 TEST1 M61040FP 4.7 µF DI CK CS ANALOG OUT CIN Data Input 0.5 V↔3.5 V Isink A Isource Circuit 10 REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 10 of 24 M61040FP Block Diagram Description (1) Battery voltage detection circuit The M61040 battery voltage detection circuit is shown in figure 3. This circuit is composed of switch, buffer amplifier, reference voltage section and logic circuit. Microcomputer selects detecting voltage before logic circuit controls the connection of switches. This connection decides which cell voltage (Vbat1, Vbat2, Vbat3, Vbat4) should be output from analog out pin. Besides offset voltage can be output. In power down mode, supply current in this block is close to zero because all switches are off. Note: Regard 50 µs as the standard of settling time by voltage change in this block. VIN1 5 S11 Vat1 VIN2 S22 6 Vat2 S21 Switch Control VIN3 S32 7 Logic Circuit From Serial to Parallel conversion circuit Vat3 S31 VIN4 S42 8 − + Vat4 S41 To Multiplexer circuit VIN10 S02 GND Vref 11 S01 Figure 3 Battery Voltage Detection Circuit REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 11 of 24 M61040FP (2) Charge/discharge current detection circuit The charge/discharge current detection circuit is shown in figure 4. This circuit is composed of offset voltage adjustment circuit, buffer amplifier and resistor network. The pre-amplifier amplifies the voltage of sense resistance to the voltage based on GND. The voltage gain can be selected by microcomputer commands. Buffer amplifier does an impedance translation between input and output. From Serial to Parallel conversion circuit Vreg = 5.2 V To Multiplexer circuit AMP3 + R R AMP4 AMP1 AMP2 R RC1 + RD1 AMP1 From Serial to Parallel conversion circuit RC3 RC2 RD2 12 VIN11 Rsence Charge current Monitor RC3 RC2 R − + Offset voltage Adjustment circuit Figure 4 Charge/Discharge Current Detection Circuit The offset voltage can be compensated by adjustment circuit. The function in detecting discharge current is shown in figure 5. The differential voltage of sense resistor is input to + (plus) terminal of AMP 1 when discharge current is flowing in sense resistor. Selecting high voltage gain by microcomputer's command is capable of monitoring very little discharge current accurately. The differential voltage of sense resistor is input to – (minus) terminal of AMP 2 when charge current is flowing in sense resistor. The methods of detecting in charging are the same as in discharging except that AMP2 reverses input voltage before outputting. Note: Regard 500 µs as the standard of settling time by voltage change in this block. Vb = Idis • Rsens • Gain + AMP2 From I/F circuit − RC1 Va = Idis • Rsens • Gain 11 VIN10 Charge current Icha Discharge current Idis Figure 5 Charge/Discharge Current Detection REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 12 of 24 − RD1 − − + Discharge current Monitor RD2 RD3 VIN11 12 Rsence VIN10 11 GND 10 RD3 + − M61040FP (3) Over current detection circuit The over current detection circuit is shown in figure 6. This circuit is composed of comparator, reference voltage and delay circuit. It can be got high accuracy over current detection by adjusting detection voltage with sense resistor. Microcomputer can detect the over current status through monitoring "CIN" pin. Besides this block contains load-short detection circuit. This circuit detects load-short with VIN12 pin and protects faster than over current detection. VIN12 9 4 DFOUT To Microcomputer 13 CIN Delay circuit − + Battery Vref1 VIN11 12 VIN10 11 Rsense Figure 6 Over Current Detection Circuit (4) Voltage regulator and reference voltage Voltage regulator and reference circuit are shown in figure 7. Pch MOS transistor is used for output driver. The output voltage can be adjusted by M61040 itself. So the external resistor is not required. Note: There is a diode put between VCC and Vreg terminal to prevent the invert current from damaging this IC when VCC voltage is higher than Vreg voltage. So please always keep Vreg voltage lower than VCC + 0.3 V. Set a condenser on output to suppress input changes or load changes. VCC 1 VREF1 − + M1 Vreg 20 ON/OFF R1 VREF2 − M1 R2 + ON/OFF R3 19 Vref R4 Serial to Parallel conversion circuit Figure 7 Voltage Regulator Circuit REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 13 of 24 M61040FP (5) Reset circuit The M61040 reset circuit is shown in figure 8. This circuit is composed of comparator, reference voltage section and breeder resistor. The reset output is Nch open drain structure so the reset delay time depends on external CR value. The reset circuit monitors Vreg output to prevent microcomputer abnormal operation when VCC voltage goes down abnormally. Vreg R1 + − R2 RESET Vref1 Rh GND Figure 8 Reset Circuit REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 14 of 24 M61040FP (6) Conditioning circuit The M61040 conditioning circuit is shown in figure 9. This circuit is composed of switch, resistor and logic circuit. According to the serial data from microcomputer, the logic circuit can individually control the switches (S60, S61 ... etc.) to do individual cell discharge to a select voltage. This circuit is capable of making all sells discharge at the same time. VIN1 5 S60 V1 R60 VIN2 6 S61 V2 R61 VIN3 7 S62 V3 Switch Control Logic circuit R62 VIN4 8 S63 V4 Serial to Parallel conversion circuit R63 GND 10 Figure 9 Conditioning Circuit REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 15 of 24 M61040FP Digital Data Format MSB DI CK D5 D4 D3 D2 D1 D0 Last First LSB 6-bit shift resister CS Address Decoder Latch Latch MPX Latch MPX Latch MPX FET, VR Latch MPX *1 Latch MPX *2 MPX Offset adjustment Vreg, Vref Multiplexer control control control Notes: *1 Charge, discharge current detection *2 Battery voltage output Figure 10 Serial to Parallel Conversion Circuit Data Timing Example LSB DI D0 D1 D2 D3 D4 D5 MSB CK CS Figure 11 Serial to Parallel Timing Chart REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 16 of 24 M61040FP Data Timing Table 2 Establishment Data Reset Battery voltage output Offset adjustment Charge/discharge current detection FET control Multiplexer select Conditioning circuit Regulator over current control D5 0 0 0 0 1 1 1 1 Address D4 0 0 1 1 0 0 1 1 D3 0 1 0 1 0 1 0 1 D2 — — — — — — — — Data D1 — — — — — — — — D0 — — — — — — — — Contents Refer to table 3 Refer to table 4 Refer to table 5 Refer to table 6 Refer to table 7 Refer to table 8 Refer to table 9 Table 3 Battery Voltage Output D2 0 0 0 0 1 1 1 1 Note: D1 0 0 1 1 0 0 1 1 D0 0 1 0 1 0 1 0 1 Output Voltage V1 V2 V3 V4 Connect to VIN2 Connect to VIN3 Connect to VIN4 Connect to VIN10 Offset voltage output Offset voltage output Offset voltage output Offset voltage output Detail V1 battery voltage output when system reset Table 4 Offset Voltage Control Section of Discharge Current Monitor Amplifier D2 0 0 0 0 1 1 1 1 Note: D1 0 0 1 1 0 0 1 1 D0 0 1 0 1 0 1 0 1 No offset (0 V) 1V 2.1 V 3.1 V 3.7 V 1V 1V 1V Output Offset Voltage Value No offset voltage when system reset Table 5 Charge and Discharge Current Detection D2 0 0 0 0 1 1 1 1 Note: D1 0 0 1 1 0 0 1 1 D0 0 1 0 1 0 1 0 1 Mode AMP stop, resistor open Gain × 40 output Gain × 100 output Gain × 200 output AMP stop, resistor open Offset output (× 40) Offset output (× 100) Offset output (× 200) Output AMP operation stop, current save AMP operation stop, current save Amplifier operation is stopped when system reset REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 17 of 24 M61040FP Table 6 FET Regulator Control D2 0 0 0 0 1 1 1 1 Note: D1 0 0 1 1 0 0 1 1 D0 0 1 0 1 0 1 0 1 CFOUT Terminal High High High High Low Low Low Low FET Connection Terminal DFOUT Terminal High High Low Low High High Low Low PFOUT Terminal High Low High Low High Low High Low CFOUT, DFOUT and PFOUT are high when system reset. (Over current detection is disable when DFOUT is high.) Table 7 Multiplexer Control D2 0 0 0 0 1 1 1 1 Note: D1 0 0 1 1 0 0 1 1 D0 0 1 0 1 0 1 0 1 Output Open output (floating) select Open output (floating) select Open output (floating) select Open output (floating) select Charge current output select Discharge current output select Battery voltage output select GND output select Multiplexer output is floating when system reset Table 8 Conditioning Circuit D2 0 0 0 0 1 1 1 1 Note: D1 0 0 1 1 0 0 1 1 D0 0 1 0 1 0 1 0 1 Output Open V1 conditioning (short VIN1 and VIN2) V2 conditioning (short VIN2 and VIN3) V3 conditioning (short VIN3 and VIN4) V4 conditioning (short VIN4 and GND) V1 to V4 conditioning (discharge all cells) Open Open Conditioning circuit is floating when system reset Table 9 Regulator, Over Current Detection Control D2 0 0 0 0 1 1 1 1 Note: D1 0 0 1 1 0 0 1 1 D0 0 1 0 1 0 1 0 1 Regulator ON OFF (GND output) *1 ON ON Don't care Don't care Don't care Don't care Output Over Current Detection Circuit ON *1 Capacity delay terminal L fix Capacity delay terminal H fix Don't care Don't care Don't care Don't care The regulator output is enable when system reset. 1. All functions of M61040 are stooped. But if the charger is connected then M61040 will not enter power down mode. REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 18 of 24 M61040FP Timing Chart Discharge Sequence Battery Voltage (V) 5 4 3 2 1 0 0.15 0.1 0.05 0 −0.05 −0.1 −0.15 20 15 10 5 0 20 Vbat4 reaches the over-charge voltage. From low voltage (Vbat1, Vbat2, Vbat3, Vbat4) Charge Period VIN11 (V) Discharging Charging CFOUT (V) Command from Microcomputer Off in initializing Charge Start Command from Microcomputer Charge Stop PFOUT (V) 15 10 5 0 20 Off in initializing Command from Microcomputer Pre-charge Start Command from Microcomputer Pre-charge stop DFOUT (V) 15 10 Off in initializing 5 0 Charge Start Command from Microcomputer Supply Voltage (V) 20 15 10 5 0 5 VIN12 pin VDD pin VIN1 pin Vreg, RESET Vreg Charger connected RESET Microcomputer starts operations. Gain 200 Pre-charge current Monitor Gain 40 Bat4 Monitor 0 ANALOG OUT (V) 5 Charge current Monitor 0 Bat1 Monitor Bat3 Bat2 Monitor Monitor Note: Testing in constant voltage REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 19 of 24 M61040FP Discharge Sequence Battery Voltage (V) 5 4 3 2 1 0 0.15 0.1 0.05 0 −0.05 −0.1 −0.15 20 From high voltage (Vbat1, Vbat2, Vbat3, Vbat4) Discharge Period Self discharge period Vbat4 reaches the over-discharge voltage. VIN11 (V) Discharge Discharge Start Discharge Stop Charge CFOUT (V) 15 10 5 0 Command from Microcomputer Command from Microcomputer 20 PFOUT (V) 15 10 5 0 20 Command from Microcomputer Command from Microcomputer DFOUT (V) 15 10 5 0 Discharge stop Off in power-down mode Command from Microcomputer Supply Voltage (V) 20 15 10 5 0 5 RESET VIN12 pin: Pulled down to GND in discharge forbidden VDD pin VIN1 pin Vreg, RESET Vreg System stop Command from Microcomputer 0 ANALOG OUT (V) 5 Gain 200 Gain 40 Bat1 Bat2 Bat3 Monitor Monitor Monitor Bat4 Monitor 0 Discharge current Monitor REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 20 of 24 M61040FP Over Current Detection Sequence Battery Voltage (V) 5 4 3 2 1 0 0.4 0.3 0.2 0.1 0 −0.1 −0.2 −0.3 −0.4 20 Vbat1 = Vbat2 = Vbat3 = Vbat4 Rash Current Generation Discharge Over-current Generation Rash Current Generation Over-current Generation Load Short VIN11 (V) Load Short Charge CFOUT (V) Discharge Stop Discharge Stop 15 10 5 0 20 PFOUT (V) Discharge Stop Discharge Stop 15 10 5 0 20 DFOUT (V) Discharge Stop Discharge Stop 15 10 5 0 Supply Voltage (V) 20 15 10 5 0 5 RESET V CC VIN12 pin VDD pin VIN1 pin Vreg, RESET ANALOG OUT (V) 0 5 Gain 40 Discharge current Monitor 0 REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 21 of 24 M61040FP Application Circuit D1 CFET D2 PFET RPF1 CVCC RCF1 RIN12 RPF2 + terminal RCF2 DFET RPF3 VCC VIN12 VDD CREF CFOUT PFOUT DFOUT VIN1 RIN1 VCC COUT VIN1 CIN1 Battery 1 VREG Vref RRESET RIN2 VREF M61040FP VIN2 CIN2 Battery 2 VIN2 2nd Protect RESET RESET CRESET RIN3 VIN3 CIN3 Battery 3 VIN3 DGND AGND − terminal REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 22 of 24 M37515 CREG RIN4 ADIN1 RCK ANALOG OUT CK CS RCS VIN4 CIN4 Battery 4 VIN4 CK CS DI ADIN2 RDI GND DI CIN VIN11 RIN11 VIN10 GND CT CICT CIN11 RSENCE M61040FP Table 10 Fixed Number Symbol D1 D2 DFET CFET PFET RCF1 RCF2 RPF1 RPF2 RPF3 RIN1 CIN1 RIN2 CIN2 RIN3 CIN3 RIN4 CIN4 CICT RIN12 CVCC RSENCE RIN11 CIN11 CREG CREF RRESET CRSET RCK RCS RDI Components Diode Diode Pch MOSFET Pch MOSFET Nch MOSFET Resistor Resistor Resistor Resistor Resistor Resistor Capacitor Resistor Capacitor Resistor Capacitor Resistor Capacitor Capacitor Resistor Capacitor Sensing resistor Resistor Capacitor Capacitor Capacitor Resistor Capacitor Resistor Resistor Resistor Purpose Supply voltage Supply voltage Discharge control Charge control Precharge control Pull down resistor Current limit Pull down resistor Precharge current control Current limit Measure for ESD Measure for ripples of power supply Measure for ESD Measure for ripples of power supply Measure for ESD Measure for ripples of power supply Measure for ESD Measure for ripples of power supply Set up delay time Measure for ESD Measure for ripples of power supply Charge/discharge current monitor Measure for ripples of power supply Measure for ripples of power supply Eliminate the voltage noise Eliminate the voltage noise Set up delay time Set up delay time Pull down resistor Pull down resistor Pull down resistor Recommend — — — — — 1 MΩ 100 kΩ 1 MΩ 1 kΩ 100 kΩ 10 Ω 0.22 µF 1 kΩ 0.22 µF 1 kΩ 0.22 µF 1 kΩ 0.22 µF 0.01 µF 10 kΩ 0.22 µF 20 mΩ 100 Ω 0.1 µF 4.7 µF 4.7 µF 47 kΩ 0.1 µF — — — Min — — — — — 100 kΩ — 100 kΩ — — — — — — — — — — — 300 Ω — — — — 0.47 µF — 10 k Ω — 100 kΩ 100 kΩ 100 kΩ Max — — — — — 3 MΩ 1 MΩ 3 MΩ — 1 MΩ 1 kΩ 1.0 µF 10 k Ω 1.0 µF 10 k Ω 1.0 µF 10 k Ω 1.0 µF 0.47 µF 200 kΩ — — 1 kΩ 1.0 µF — — 3 MΩ — — — — — — It is necessary that you adjust a delay time for MCU. — — — Please set up same value as RIN2, CIN2 Please set up same value as RIN2, CIN2 — — — — — — N.B. Please take care the maximum power dissipation. Please take care the maximum power dissipation. — — — — — — — — — REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 23 of 24 M61040FP Package Dimensions 20P2X-A Note: Please contact Renesas Technology Corp. for further details. REJ03F0237-0200 Rev.2.00 Mar 18, 2008 Page 24 of 24 Sales Strategic Planning Div. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Notes: 1. This document is provided for reference purposes only so that Renesas customers may select the appropriate Renesas products for their use. Renesas neither makes warranties or representations with respect to the accuracy or completeness of the information contained in this document nor grants any license to any intellectual property rights or any other rights of Renesas or any third party with respect to the information in this document. 2. Renesas shall have no liability for damages or infringement of any intellectual property or other rights arising out of the use of any information in this document, including, but not limited to, product data, diagrams, charts, programs, algorithms, and application circuit examples. 3. You should not use the products or the technology described in this document for the purpose of military applications such as the development of weapons of mass destruction or for the purpose of any other military use. When exporting the products or technology described herein, you should follow the applicable export control laws and regulations, and procedures required by such laws and regulations. 4. All information included in this document such as product data, diagrams, charts, programs, algorithms, and application circuit examples, is current as of the date this document is issued. Such information, however, is subject to change without any prior notice. Before purchasing or using any Renesas products listed in this document, please confirm the latest product information with a Renesas sales office. Also, please pay regular and careful attention to additional and different information to be disclosed by Renesas such as that disclosed through our website. (http://www.renesas.com ) 5. Renesas has used reasonable care in compiling the information included in this document, but Renesas assumes no liability whatsoever for any damages incurred as a result of errors or omissions in the information included in this document. 6. When using or otherwise relying on the information in this document, you should evaluate the information in light of the total system before deciding about the applicability of such information to the intended application. Renesas makes no representations, warranties or guaranties regarding the suitability of its products for any particular application and specifically disclaims any liability arising out of the application and use of the information in this document or Renesas products. 7. With the exception of products specified by Renesas as suitable for automobile applications, Renesas products are not designed, manufactured or tested for applications or otherwise in systems the failure or malfunction of which may cause a direct threat to human life or create a risk of human injury or which require especially high quality and reliability such as safety systems, or equipment or systems for transportation and traffic, healthcare, combustion control, aerospace and aeronautics, nuclear power, or undersea communication transmission. If you are considering the use of our products for such purposes, please contact a Renesas sales office beforehand. Renesas shall have no liability for damages arising out of the uses set forth above. 8. Notwithstanding the preceding paragraph, you should not use Renesas products for the purposes listed below: (1) artificial life support devices or systems (2) surgical implantations (3) healthcare intervention (e.g., excision, administration of medication, etc.) (4) any other purposes that pose a direct threat to human life Renesas shall have no liability for damages arising out of the uses set forth in the above and purchasers who elect to use Renesas products in any of the foregoing applications shall indemnify and hold harmless Renesas Technology Corp., its affiliated companies and their officers, directors, and employees against any and all damages arising out of such applications. 9. You should use the products described herein within the range specified by Renesas, especially with respect to the maximum rating, operating supply voltage range, movement power voltage range, heat radiation characteristics, installation and other product characteristics. Renesas shall have no liability for malfunctions or damages arising out of the use of Renesas products beyond such specified ranges. 10. Although Renesas endeavors to improve the quality and reliability of its products, IC products have specific characteristics such as the occurrence of failure at a certain rate and malfunctions under certain use conditions. Please be sure to implement safety measures to guard against the possibility of physical injury, and injury or damage caused by fire in the event of the failure of a Renesas product, such as safety design for hardware and software including but not limited to redundancy, fire control and malfunction prevention, appropriate treatment for aging degradation or any other applicable measures. Among others, since the evaluation of microcomputer software alone is very difficult, please evaluate the safety of the final products or system manufactured by you. 11. In case Renesas products listed in this document are detached from the products to which the Renesas products are attached or affixed, the risk of accident such as swallowing by infants and small children is very high. You should implement safety measures so that Renesas products may not be easily detached from your products. Renesas shall have no liability for damages arising out of such detachment. 12. This document may not be reproduced or duplicated, in any form, in whole or in part, without prior written approval from Renesas. 13. Please contact a Renesas sales office if you have any questions regarding the information contained in this document, Renesas semiconductor products, or if you have any other inquiries. RENESAS SALES OFFICES Refer to "http://www.renesas.com/en/network" for the latest and detailed information. Renesas Technology America, Inc. 450 Holger Way, San Jose, CA 95134-1368, U.S.A Tel: (408) 382-7500, Fax: (408) 382-7501 Renesas Technology Europe Limited Dukes Meadow, Millboard Road, Bourne End, Buckinghamshire, SL8 5FH, U.K. Tel: (1628) 585-100, Fax: (1628) 585-900 Renesas Technology (Shanghai) Co., Ltd. Unit 204, 205, AZIACenter, No.1233 Lujiazui Ring Rd, Pudong District, Shanghai, China 200120 Tel: (21) 5877-1818, Fax: (21) 6887-7858/7898 Renesas Technology Hong Kong Ltd. 7th Floor, North Tower, World Finance Centre, Harbour City, Canton Road, Tsimshatsui, Kowloon, Hong Kong Tel: 2265-6688, Fax: 2377-3473 Renesas Technology Taiwan Co., Ltd. 10th Floor, No.99, Fushing North Road, Taipei, Taiwan Tel: (2) 2715-2888, Fax: (2) 3518-3399 Renesas Technology Singapore Pte. Ltd. 1 Harbour Front Avenue, #06-10, Keppel Bay Tower, Singapore 098632 Tel: 6213-0200, Fax: 6278-8001 Renesas Technology Korea Co., Ltd. Kukje Center Bldg. 18th Fl., 191, 2-ka, Hangang-ro, Yongsan-ku, Seoul 140-702, Korea Tel: (2) 796-3115, Fax: (2) 796-2145 http://www.renesas.com Renesas Technology Malaysia Sdn. Bhd Unit 906, Block B, Menara Amcorp, Amcorp Trade Centre, No.18, Jln Persiaran Barat, 46050 Petaling Jaya, Selangor Darul Ehsan, Malaysia Tel: 7955-9390, Fax: 7955-9510 © 2008. Renesas Technology Corp., All rights reserved. Printed in Japan. Colophon .7.2