TC4626MJA

TC4626/TC4627 Power CMOS Drivers With Voltage Tripler Features • • • • • • Power Driver With On Board Voltage Booster Low IDD – 8.5V, Figure 3-1 Peak Output Current — 1.5 13 15 — A 20 25 Ω — — — 0.025 V V Ω IOUT = 10mA, VDD = 5V C & E Version (TA = 70°C or 85°C) M Version (TA = 125°C) IOUT = 10mA, VDD = 5V C & E Version (TA = 70°C or 85°C) M Version (TA = 125°C) Logic 1, High Input Voltage Logic 0, Low Input Voltage Input Current 2.4 — -10 — — — — 0.8 1 V V µA 0V ≤ VIN ≤ VBOOST Power Supply Current Supply Voltage — 4.0 — — 2.5 6.0 mA V VIN = LOW or HIGH Parameter Min Typ Max Units Test Conditions Electrical Characteristics: Over operating temperature range, VDD = 5V, C1 = C2 = C3 10µF unless otherwise noted. Parameter Min Typ Max Units Test Conditions 2002 Microchip Technology Inc. DS21426B-page 3 © TC4626/TC4627 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: Pin No. (8-Pin PDIP, CERDIP) 1 2 3 4 5 6 7 8 PIN FUNCTION TABLE Symbol C1C1+ C2 GND OUT VBOOST IN VDD Ground. Description Pin No. (16-Pin SOIC Wide) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol C1NC C1+ NC C2 NC NC GND OUT NC VBOOST NC IN NC NC VDD No connect. No connect. No connect. No connect. No connect. No connect. Ground. No connect. No connect. Description © DS21426B-page 4 2002 Microchip Technology Inc. TC4626/TC4627 3.0 APPLICATIONS INFORMATION INVERTING DRIVER SWITCHING TIME VBOOST FIGURE 3-1: FIGURE 3-2: NONINVERTING DRIVER SWITCHING TIME VBOOST C3 10µF 6 Input C1 10µF 1 3 C2 10µF 7 2 C1+ C15 0.1µF Ceramic C3 10µF 6 7 2 C1 10µF 1 C1+ C15 0.1µF Ceramic Output CL = 1000pF Input Output CL = 1000pF C2 TC4626 4 8 VDD = 5V 3 C2 10µF C2 TC4627 4 8 VDD = 5V +5V Input 0V VBOOST Output 0V Input: 100kHz, square wave, tRISE = tFALL ≤ 10nsec 10% 10% tD1 tF 90% 90% +5V Input 90% tD2 0V tR 90% 10% 90% 90% VBOOST tD1 Output tD2 tR tF 10% 10% 0V 10% Input: 100kHz, square wave, tRISE = tFALL ≤ 10nsec 2002 Microchip Technology Inc. DS21426B-page 5 © TC4626/TC4627 3.1 BOOSTER FUNCTION The voltage booster is an unregulated voltage tripler circuit. The tripler consists of three sets of internal switches and three external capacitors. S1a and S1b charge capacitor C1 to V DD potential. S2a and S2b add C1 potential to VDD input to charge C2 to 2 x VDD. S3a and S3b add C1 potential to C2 to charge C3 to 3 x VDD. The position of the switches is controlled by the internal 4 phase clock. FIGURE 3-3: VOLTAGE BOOSTER 6 + C3 S3a 3 + C2 S2a 2 x VDD S3b 3 x VDD, VBOOST 6 (4 to 6V) VDD 8 S1a 2 S2b + C1 1 S1b GND 4 FIGURE 3-4: POSITION OF SWITCHES Pin 1 & 2 Waveforms 3 x VDD Pin 2 Voltage 2 x VDD VDD 2 x VDD Pin 1 Voltage VDD 0 On S1 Off S2 On Off S3 On Off © DS21426B-page 6 2002 Microchip Technology Inc. TC4626/TC4627 4.0 Note: TYPICAL CHARACTERISTICS The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. TC4626 VOH vs. Frequency 16 14 12 10 2200pF 8 6 4 2 0 1000pF 470pF VS = 5V TA = -55°C TC4626 VOH vs. Frequency 14 12 470pF VS = 5V TA = 25°C VOUT HI (Volts) VOUT HI (Volts) 10 8 6 2200pF 4 2 0 1000pF 5 500 1,000 1,500 2,000 2,500 3,000 3,500 FREQUENCY (kHz) 10 500 1,000 1,500 2,000 2,500 3,000 3,500 FREQUENCY (kHz) TC4626 VOH vs. Frequency 14 12 VS = 5V TA = 125°C 100 Delay Time vs. Temperature Input = 0-5V; TR & TF