TC54VC3802EZB

TC54 Voltage Detector Features: General Description: • ±2.0% Detection Thresholds • Small Packages: 3-Pin SOT-23A, SOT-89, and TO-92 • Low Current Drain: 1 µA, typical • Wide Detection Range: 1.1V to 6.0V • Wide Operating Voltage Range: 0.7V to 10V The TC54 series are CMOS voltage detectors especially well-suited for battery-powered applications because of their extremely low 1 µA operating current and small surface-mount packaging. Each part is lasertrimmed to the desired threshold voltage, which can be specified from 1.4V to 6.0V with a 2% tolerance. The TC54 is available with either an open-drain or complementary output stage. During operation, the output (VOUT) remains in the logic-high state as long as VIN is greater than the specified threshold voltage (VDET –). When VIN falls below VDET –, the output is driven to a logic-low. VOUT remains low until VIN rises above VDET – by an amount VHYST, when it resets to a logichigh state. Applications: • • • • • Battery Voltage Monitoring Microprocessor Reset System Brown-Out Protection Switching Circuit in Battery Backup Level Discriminator Package Types Functional Block Diagram TC54VC only 3-Pin SOT-89 3-Pin SOT-23A VIN VIN 3 VIN TC54 VOUT – 1 VOUT + TC54 2 3 VOUT VIN VSS 2 VSS 1 3-Pin TO-92 VREF 123 VSS TC54VN has open-drain output. TC54VC has complementary (push-pull) output. VOUT VIN VSS Note: 3-Pin SOT-23A is equivalent to the EIAJ SC-59. Device Features Output Device Reset Delay Std. Trip Points(1) (typical) Type State TC54VN Open-Drain Active Low No 1.4V, 2.1V, 2.7V, 2.9V TC54VC Push-Pull Active Low No 3.0V, 4.2V, 4.3V Note 1: Custom Trip Points available. Minimum order requirement. Information available upon request.  2001-2014 Microchip Technology Inc. DS20001434K-page 1 TC54 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings † Input Voltage ...................................................................+12V Output Current ..............................................................50 mA Output Voltage: CMOS................(VSS – 0.3V) to (VIN + 0.3V) Open-Drain.....................(VSS – 0.3V) to 12V Power Dissipation (TA  70°C): 3-Pin SOT-23A .......................................................240 mW 3-Pin SOT-89..........................................................500 mW 3-Pin TO-92 ............................................................300 mW Operating Temperature Range........................-40°C to +85°C Storage Temperature Range .........................-65°C to +150°C † Notice: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. DC CHARACTERISTICS Electrical Specifications: Unless otherwise noted, TA = +25°C. Parameter Symbol Min. Typ. Max. Units Operating Voltage VIN 0.7 — 10.0 V 0.7 — 6.0 V (VDET –)  1.6V (VDET –) < 1.6V Quiescent Current ISS — 0.8 2.7 µA VIN = 2.0V — 0.9 3.0 VIN = 3.0V — 1.0 3.2 VIN = 4.0V Threshold Voltage (Note 1) Hysteresis Voltage Output Current Tempco of (VDET –) Delay Time Note 1: 2: Test Conditions — 1.1 3.6 1.37 1.4 1.43 2.06 2.1 2.14 TC54VX21 2.65 2.7 2.75 TC54VX27 2.84 2.9 2.96 TC54VX29 2.94 3.0 3.06 TC54VX30 4.12 4.2 4.28 TC54VX42 4.21 4.3 4.39 TC54VX43 N.M-2% N.M N.M+2% 28 70 112 42 105 168 VDET = 2.1V (typical) 54 135 216 VDET = 2.7V (typical) 58 145 232 VDET = 2.9V (typical) 60 150 240 VDET = 3.0V (typical) 84 210 336 VDET = 4.2V (typical) 86 215 344 VDET = 4.3V (typical) Q-60% Q Q+60% 3.0 7.7 — 5.0 10.1 — VOL = 0.5V, VIN = 3.0V 6.0 11.5 — VOL = 0.5V, VIN = 4.0V 7.0 13.0 — VOL = 0.5V, VIN = 5.0V — -10.0 -2.0 TC (VDET –) — ±100 — tDLY — — 0.2 VDET – VHYST IOUT VIN = 5.0V V TC54VX14 TC54VXNM (Note 2) mV VDET = 1.4V (typical) VDET = (20*Q)V (typical) (Note 2) mA VOL = 0.5V, VIN = 2.0V TC54VC Only: VOH = VIN – 2.1V, VIN = 8.0V ppm/°C -40°C  TA  85°C ms VDET –  VOUT inversion For other voltage options, please contact your regional Microchip sales office. Represents all other custom Threshold Voltage options. DS20001434K-page 2  2001-2014 Microchip Technology Inc. TC54 TEMPERATURE SPECIFICATIONS Electrical Characteristics: Unless otherwise indicated, all limits are specified for: VDD =+1.8V to +5.5V, VSS = GND. Parameters Sym. Min. Typ. Max. Units Operating Temperature Range TA -40 — +85 °C Storage Temperature Range TA -65 — +150 °C Thermal Resistance, 3L-SOT-23A JA — 308 — °C/W Thermal Resistance, 3L-SOT-89 JA — 131.7 — °C/W Thermal Resistance, 3L-TO-92 JA — 146 — °C/W Conditions Temperature Ranges Thermal Package Resistances VDET –+VHYST VDET VDD tDLY OUTPUT FIGURE 1-1: VOH Timing Diagram.  2001-2014 Microchip Technology Inc. DS20001434K-page 3 TC54 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: PIN FUNCTION TABLE TC54 Symbol 2.1 SOT-89 TO-92 1 1 1 VOUT Digital Output 3 2 2 VIN Analog Input 2 3 3 VSS Ground Terminal — Tab — VIN Analog Input Digital Output (VOUT) VOUT goes low when VIN drops below VDET – and returns high when VIN rises above VDET – + VHYST. (See Figure 3-1). 2.2 Description SOT-23A 2.3 Ground Terminal (VSS) VSS provides the negative reference for the analog input voltage. Typically, the circuit ground is used. Analog Input (VIN) VIN can be used for power supply monitoring or a voltage level that requires monitoring. DS20001434K-page 4  2001-2014 Microchip Technology Inc. TC54 3.0 DETAILED DESCRIPTION In normal steady-state operation when VIN > VDET –, the output will be at a logic-high (see Figure 3-1). In the case of the TC54VN, this is an open-drain condition. If the input falls below VDET –, the output will pull down (Logic 0) to VSS. Generally, VOUT can pull down to within 0.5V of VSS at rated output current and input voltage. (See Section 1.0 “Electrical Characteristics”). VIN The output (VOUT) will stay valid until the input voltage falls below the minimum operating voltage (VINMIN) of 0.7V. Below this minimum operating voltage, the output is undefined. During power-up (or anytime VIN has fallen below VINMIN), VOUT will remain undefined until VIN rises above VINMIN. When this occurs, the output will become valid. VOUT will be in its Active-low state, while VINMIN < VIN < VDET+ (therefore, VDET + = VDET – + VHYST). If the input rises above VDET+, the output will assume its Inactive state (high for TC54VC, open-drain for TC54VN). VDET + VHYST Release Voltage or Reset Voltage Detect Voltage VDET – Minimum Operating Voltage Ground Level VOUT Output Voltage Ground Level FIGURE 3-1: Timing Diagram.  2001-2014 Microchip Technology Inc. DS20001434K-page 5 TC54 4.0 APPLICATIONS INFORMATION 4.1 Modifying the Trip Point, VDET – Although the TC54 has a pre-programmed VDET –, it is sometimes necessary to make adjustments during prototyping. This can be accomplished by connecting an external resistor divider to a TC54, which has a VDET – lower than that of VSOURCE (Figure 4-1). To maintain detector accuracy, the bleeder current through the divider should be significantly higher than the 1 µA operating current required by the TC54. A reasonable value for this bleeder current is 100 µA (100 times the 1 µA required by the TC54). For example, if VDET – = 2V and the desired trip point is 2.5V, the value of R1 + R2 is 25 k (2.5V/100 µA). The value of R1 + R2 can be rounded to the nearest standard value and plugged into the equation of Figure 4-1 to calculate values for R1 and R2. 1% tolerance resistors are recommended. 4.2 Other Applications Low operating power and small physical size make the TC54 series ideal for many voltage detector applications, such as those shown in Figures 4-2, 4-3 and 4-4. Figure 4-2 shows a low-voltage gate drive protection circuit that prevents the overheating of the logic-level MOSFET due to insufficient gate voltage. When the input signal is below the threshold of the TC54VN, its output grounds the gate of the MOSFET. Figure 4-3 and Figure 4-4 show the TC54 in conventional voltage monitoring applications. 4.3V 270 VCC VIN RL VOUT TC54VX VSOURCE MTP3055EL VSS R2 VIN R1 TC54 VOUT VSS FIGURE 4-2: Protection. MOSFET Low Drive + VIN – TC54VX V SOURCE  VOUT R 1 -------------------- = V DET R +R 1 2 BATLOW VSS Where: VSOURCE = Voltage to be monitored VDET – = Threshold Voltage setting of TC54 Note: FIGURE 4-3: Battery Voltage Monitor. In this example, VSOURCE must be greater than (VDET –) VIN FIGURE 4-1: Modify Trip-point of the TC54 using External Resistor Divider. + Pwr. Sply. TC54VX VOUT Power Good – VSS FIGURE 4-4: DS20001434K-page 6 Power Good Monitor.  2001-2014 Microchip Technology Inc. TC54 5.0 PACKAGING INFORMATION 5.1 Package Marking Information 3-Lead SOT-23A Example C302 2NN 3-Lead SOT-89 Example XXXYYWW @NNN 3-Lead TO-92 Example XXXXXX XXXXXX XXXXXX YWWNNN Legend: XX...X Y YY WW NNN e3 * Note: E3 31 54VN 3002 1256 Customer-specific information Year code (last digit of calendar year) Year code (last 2 digits of calendar year) Week code (week of January 1 is week ‘01’) Alphanumeric traceability code Pb-free JEDEC® designator for Matte Tin (Sn) This package is Pb-free. The Pb-free JEDEC designator ( e3 ) can be found on the outer packaging for this package. In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information.  2001-2014 Microchip Technology Inc. DS20001434K-page 7 TC54 3-Pin SOT-23A 3-Pin TO-92 3-Pin SOT-89 2 4 1 2 3 4 1 2 3 4 1 5 6 7 8 3 1 , 2 and 3 1 represents output configuration (CMOS or Nch) and first integer of voltage Ex: CMOS 3.x = 2 ) 3 4 D Symbol Output Voltage B CMOS 1. C CMOS 2. D CMOS 3. E CMOS 4. F CMOS 5. H CMOS I CMOS = 54X (fixed) represents output configuration (CMOS or N-Ch) Ex: CMOS 3.x = C Symbol 5 Output C CMOS N N-Channel represents first integer of detect voltage Symbol Voltage 6. 2 2. 7. 3 3. 4 4. 5 5. 6 6. Symbol Output Voltage L N-Channel 1. M N-Channel 2. N N-Channel 3. P N-Channel 4. R N-Channel 5. S N-Channel 6. T N-Channel 7. 6 represents first decimal of detect voltage Symbol Voltage Symbol Voltage 0 .0 5 .5 1 .1 6 .6 2 .2 7 .7 represents first decimal of output voltage (0-9) 3 .3 8 .8 Ex: CMOS 3.x = 4 .4 9 .9 D 4 Symbol Voltage Symbol Voltage 0 .0 6 .6 1 .1 7 .7 2 .2 8 .8 3 .3 9 .9 4 .4 5 .5 and 4 represent assembly lot code DS20001434K-page 8 7 8 represents the output delay time Symbol Delay Time 0 No Delay represents the device accuracy Symbol Accuracy 1 ±1.0% (custom) 2 ±2.0% (standard)  2001-2014 Microchip Technology Inc. TC54 /HDG3ODVWLF6PDOO2XWOLQH7UDQVLVWRU&%>627$@ 1RWH )RUWKHPRVWFXUUHQWSDFNDJHGUDZLQJVSOHDVHVHHWKH0LFURFKLS3DFNDJLQJ6SHFLILFDWLRQORFDWHGDW KWWSZZZPLFURFKLSFRPSDFNDJLQJ D e1 e 2 1 E E1 N b A φ c A2 L A1 8QLWV 'LPHQVLRQ/LPLWV 1XPEHURI3LQV 0,//,0(7(56 0,1 120 0$; 1  /HDG3LWFK H %6& 2XWVLGH/HDG3LWFK H 2YHUDOO+HLJKW $  ± 0ROGHG3DFNDJH7KLFNQHVV $  ±  6WDQGRII $  ±  2YHUDOO:LGWK (  ±  0ROGHG3DFNDJH:LGWK (  ±  2YHUDOO/HQJWK '  ±  )RRW/HQJWK /  ±  )RRW$QJOH  ƒ ± ƒ /HDG7KLFNQHVV F  ±  %6&  /HDG:LGWK E  ±  1RWHV  'LPHQVLRQV'DQG(GRQRWLQFOXGHPROGIODVKRUSURWUXVLRQV0ROGIODVKRUSURWUXVLRQVVKDOOQRWH[FHHGPPSHUVLGH  'LPHQVLRQLQJDQGWROHUDQFLQJSHU$60(