Electronic Components Datasheet Search |
|
UC1637-SP Datasheet(PDF) 3 Page - Texas Instruments |
|
|
UC1637-SP Datasheet(HTML) 3 Page - Texas Instruments |
3 / 12 page ELECTRICAL CHARACTERISTICS: PARAMETERS TEST CONDITIONS UC1637/UC2637 UC3637 UNITS MIN TYP MAX MIN TYP MAX Error Amplifier (Continued) Output Sink Current VPIN 17 = 0V -50 -20 -50 -20 mA Output Source Current VPIN 17 = 0V 5 11 5 11 mA High Level Output Voltage 13 13.6 13 13.6 V Low Level Output Voltage -14.8 -13 -14.8 -13 V PWM Comparators Input Offset Voltage VCM = 0V 20 20 mV Input Bias Current VCM = 0V 2 10 2 10 µA Input Hysteresis VCM = 0V 10 10 mV Common Mode range VS = ±5V to ±20V -VS+1 +VS-2 -VS+1 +VS-2 V Current Limit Input Offset Voltage VCM = 0V, TJ = 25°C 190 200 210 180 200 220 mV Input Offset Voltage T.C. -0.2 -0.2 mV/°C Input Bias Current -10 -1.5 -10 -1.5 µA Common Mode Range VS = ±2.5V to ±20V -VS +VS-3 -VS +VS-3 V Shutdown Shutdown Threshold (Note 4) -2.3 -2.5 -2.7 -2.3 -2.5 -2.7 V Hysteresis 40 40 mV Input Bias Current VPIN 14 = +VS to -VS -10 -0.5 -10 -0.5 µA Under-Voltage Lockout Start Threshold (Note 5) 4.15 5.0 4.15 5.0 V Hysteresis 0.25 0.25 mV Total Standby Current Supply Current 8.5 15 8.5 15 mA Output Section Output Low Level ISINK = 20mA -14.9 -13 -14.9 -13 V ISINK = 100mA -14.5 -13 -14.5 -13 Output High Level ISOURCE = 20mA 13 13.5 13 13.5 V ISOURCE = 100mA 12 13.5 12 13.5 Rise Time (Note 3) CL = Inf, TJ = 25°C 100 600 100 600 ns Fall Time (Note 3) CL = Inf, TJ = 25°C 100 300 100 300 ns Note 3: These parameters, although guaranteed over the recommended operating conditions, are not 100% tested in production. Note 4: Parameter measured with respect to +VS (Pin 6). Note 5: Parameter measured at +VS (Pin 6) with respect to -VS (Pin 5). Note 6: RT and CT referenced to Ground. UC1637 UC2637 UC3637 FUNCTIONAL DESCRIPTION Following is a description of each of the functional blocks shown in the Block Diagram. Oscillator The oscillator consists of two comparators, a charging and discharging current source, a current source set ter- minal, lSET and a flip-flop. The upper and lower threshold of the oscillator waveform is set externally by applying a voltage at pins +VTH and -VTH respectively. The +VTH ter- minal voltage is buffered internally and also applied to the lSET terminal to develop the capacitor charging current through RT. If RT is referenced to -VS as shown in Figure 1, both the threshold voltage and charging current will vary proportionally to the supply differential, and the oscil- lator frequency will remain constant. The triangle wave- form oscillators frequency and voltage amplitude is determined by the external components using the formulas given in Figure 1. Unless otherwise stated, these specifications apply for TA = -55°C to +125°C for the UC1637; -25°C to +85°C for the UC2637; and 0°C to +70°C for the UC3637: VS = +15V, -VS = - 15V, +VTH = 5V, -VTH = -5V, RT = 16.7k Ω, CT = 1500pF, TA=TJ. 3 |
Similar Part No. - UC1637-SP |
|
Similar Description - UC1637-SP |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |