UCC28C40

UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45 UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45 SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010 BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLER FEATURES DESCRIPTION UCC38C4x family is a high-performance currentmode PWM controller. It is an enhanced BiCMOS version with pin-for-pin compatibility to the industry standard UC384xA family and UC384x family of PWM controllers. In addition, lower startup voltage versions of 7 V are offered as UCC38C40 and UCC38C41. Providing necessary features to control fixed frequency, peak current-mode power supplies, this family offers the following performance advantages. The device offers high-frequency operation up to 1 MHz with low start-up and operating currents, thus minimizing start-up loss and low operating power consumption for improved efficiency. The device also features a very fast current-sense-to-output delay time of 35 ns and a ±1 A peak output current capability with improved rise and fall times for driving large external MOSFETs directly. The UCC38C4x family is offered in 8-pin packages, MSOP (DGK), SOIC (D) and PDIP (P). D Enhanced Replacement for UC3842A Family D D D D D D D D D D With Pin-to-Pin Compatibility 1-MHz Operation 50-μA Standby Current, 100-μA Maximum Low Operating Current of 2.3 mA at 52 kHz Fast 35-ns Cycle-by-Cycle Overcurrent Limiting ±1-A Peak Output Current Rail-to-Rail Output Swings with 25-ns Rise and 20-ns Fall Times ±1% Initial Trimmed 2.5-V Error Amplifier Reference Trimmed Oscillator Discharge Current New Under Voltage Lockout Versions MSOP-8 Package Minimizes Board Space APPLICATIONS D Switch-Mode Power Supplies D dc-to-dc Converters D Board Mount Power Modules FUNCTIONAL BLOCK DIAGRAM VREF 8 5.0 V VREF UVLO 7 + + VDD 5 VREF GOOD LOGIC GND RT/CT 4 OSC (NOTE) 2.5 V + ERROR AMP 2R R T S 1V R Q Q 6 OUT FB 2 COMP 1 CS 3 Note: Toggle flip--flop used only in UCC38C41, UCC38C44, and UCC38C45. UDG--99139 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2003 -- 2010, Texas Instruments Incorporated www.ti.com 1 UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45 UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45 SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010 recommended operating conditions MIN Input voltage, VDD Output voltage range, VOUT Average output current, IOUTW Reference output current, IOUT(ref)W Operating junction temperature, TJW ¶ MAX 18 18 200 --20 UNIT V V mA mA °C --40 105 It is not recommended that the device operate under conditions beyond those specified in this table for extended periods of time. absolute maximum ratings over operating free-air temperature (unless otherwise noted)}w Supply voltage (VDD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 V (MAX ICC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA Output current, IOUT peak . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1 A Output energy, capacitive load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 μJ Voltage rating (COMP, CS, FB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . --0.3 V to 6.3 V (OUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . --0.3 V to 20 V (RT/CT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . --0.3 V to 6.3 V (VREF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Error amplifier output sink current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA Total Power Dissipation at TA = 25°C: D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 °C/W DGK package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120°C/W P package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C/W Operating junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . --55°C to 150°C Storage temperature range Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . --65°C to 150°C Lead Temperature (Soldering, 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C ‡ Stresses beyond 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 beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. § All voltages are with respect to ground. Currents are positive into and negative out of the specified terminals. Consult the Packaging Section of the Databook for thermal limitations and considerations of the package. AVAILABLE OPTIONS TA = TJ MAXIMUM DUTY CYCLE UVLO ON/OFF 14.5V / 9.0V 100% --40°C to 105°C 4 0 to 1 0 5 50% 8.4V / 7.6V 7.0V / 6.6V 14.5V / 9.0V 8.4V / 7.6V 7.0V / 6.6V 14.5V / 9.0V 100% 0°C to 70°C to 70 50% † SOIC-8 SMALL OUTLINE (D){ UCC28C42D UCC28C43D UCC28C40D UCC28C44D UCC28C45D UCC28C41D UCC38C42D UCC38C43D UCC38C40D UCC38C44D UCC38C45D UCC38C41D PDIP-8 PLASTIC DIP (P) UCC28C42P UCC28C43P UCC28C40P UCC28C44P UCC28C45P UCC28C41P UCC38C42P UCC38C43P UCC38C40P UCC38C44P UCC38C45P UCC38C41P MSOP-8 SMALL OUTLINE (DGK){ UCC28C42DGK UCC28C43DGK UCC28C40DGK UCC28C44DGK UCC28C45DGK UCC28C41DGK UCC38C42DGK UCC38C43DGK UCC38C40DGK UCC38C44DGK UCC38C45DGK UCC38C41DGK 8.4V / 7.6V 7.0V / 6.6V 14.5V / 9.0V 8.4V / 7.6V 7.0V / 6.6V D (SOIC--8) and DGK (MSOP--8) packages are available taped and reeled. Add R suffix to device type (e.g. UCC28C42DR) to order quantities of 2500 devices per reel. Tube quantities are 75 for D packages (SOIC--8) and 80 for DGK package (MSOP--8), and 50 for P package (PDIP-8). 2 www.ti.com UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45 UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45 SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010 electrical characteristics VDD = 15 V (See Note 1), RT = 10 kΩ, CT = 3.3 nF, CVDD = 0.1μF and no load on the outputs, TA = - °C to 105°C for the UCC28C4x and TA = 0°C to 70°C for the UCC38C4x, -40 TA = TJ (unless otherwise noted) PARAMETER Reference Section Output voltage, initial accuracy Line regulation Load regulation Temperature stability Total output variation Output noise voltage Long term stability Output short circuit Oscillator Section Initial accuracy Voltage stability Temperature stability Amplitude Discharge current Discharge current Error Amplifier Section Feedback input voltage, initial accuracy Feedback input voltage, total variation Input bias current Open-loop voltage gain (AVOL) Unity gain bandwidth Power supply rejection ratio (PSRR) Output sink current Output source current High-level output voltage (VOH) Low-level output voltage (VOL) Current Sense Section Gain Maximum input signal Power supply rejection ratio (PSRR) Input bias current CS to output delay COMP to CS offset NOTE: NOTE: NOTE: NOTE: NOTE: 1. 2. 3. 4. 5. VCS = 0 V Adjust VDD above the start threshold before setting at 15 V. Ensured by design. Not production tested. Output frequencies of the UCC38C41, UCC38C44 and the UCC38C45 are half the oscillator frequency. Oscillator discharge current is measured with RT = 10 kΩ to VREF. Parameter measured at trip point of latch with VFB = 0 V. ΔV COM , 0V ≼ V ≼ 900mV NOTE: 6. Gain is defined as ACS = CS ΔV CS See Note 5, 6 VFB < 2.4 V VDD = 12 V to 18 V, See Note 2, 5 2.85 0.9 3.00 1.0 70 –0.1 35 1.15 –2.0 70 3.15 1.1 V/V V dB μA ns V VCOMP = 2.5 V, VCOMP = 2.5 V, VFB = 5.0 V VOUT = 2 V to 4 V See Note 2 VDD = 12 V to 18 V VFB = 2.7 V, VFB = 2.3 V, VFB = 2.7 V, VFB = 2.7 V, VCOMP = 1.1 V VCOMP = 5V RLOAD = 15 k to GND RLOAD = 15 k to VREF 65 1.0 60 2 –0.5 5 14 –1.0 6.8 0.1 1.1 TA = 25°C 2.475 2.45 2.500 2.50 –0.1 90 1.5 2.525 2.55 –2.0 V V μA dB MHz dB mA mA V V TA = 25°C, VDD = 12 V to 18 V TMIN to TMAX, TA = 25°C, RT/CT = 2 V, See Note 2 RT/CT = 2 V, See Note 4 See Note 4 7.7 7.2 RT/CT Pin peak-to-peak See Note 3 50.5 53 0.2% 1% 1.9 8.4 8.4 9.0 9.5 55 1.0% 2.5% V mA mA kHz TA = 25°C VDD = 12 V to 18 V 1mA to 20mA See Note 2 See Note 2 10 Hz to 10 kHz, 1000 hours, TA = 25°C, TA = 125°C, See Note 2 See Note 2 –30 4.82 50 5 –45 25 –55 IOUT = 1mA 4.9 5.0 0.2 3 0.2 5.1 20 25 0.4 5.18 V mV mV mV/°C V μV mV mA TEST CONDITIONS MIN TYP MAX UNITS www.ti.com 3 UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45 UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45 SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010 electrical characteristics VDD = 15 V (See Note 1), RT = 10 kΩ, CT = 3.3 nF, CVDD = 0.1μF and no load on the outputs, TA = - °C to 105°C for the UCC28C4x and TA = 0°C to 70°C for the UCC38C4x, -40 TA = TJ (unless otherwise noted) PARAMETER Output Section VOUT low (RDS(on) pull-down) VOUThigh (RDS(on) pull-up) Rise tIme Fall time Undervoltage Lockout Section UCC38C42, UCC38C44 Start threshold Start threshold UCC38C43, UCC38C45 UCC38C40, UCC38C41 UCC38C42, UCC38C44 Minimum operating voltage Minimum operating voltage PWM Section Maximum duty cycle M a x i m u m d u ty c y c l e Minimum duty cycle Current Supply Section Start-up current (ISTART-UP) Operating supply current (IDD) NOTE 1: VDD = Undervoltage lockout start threshold (--0.5 V) VFB = VCS = 0 V 50 2.3 100 3.0 μA mA UCC38C42, UCC38C43, UCC38C40, VFB < 2.4 V UCC38C44, UCC38C45, UCC38C41, VFB < 2.4 V VFB > 2.6 V 94% 47% 96% 48% 0% UCC38C43, UCC38C45 UCC38C40, UCC38C41 13.5 7.8 6.5 8 7.0 6.1 14.5 8.4 7.0 9 7.6 6.6 15.5 9.0 7.5 10 8.2 7.1 V ISINK = 200 mA ISOURCE = 200 mA TA = 25°C, TA = 25°C, CLOAD = 1 nF CLOAD = 1 nF 5.5 10 25 20 15 25 50 40 Ω ns ns TEST CONDITIONS MIN TYP MAX UNITS Adjust VDD above the start threshold before setting at 15 V. PDIP (P) or SOIC (D) PACKAGE (TOP VIEW) MSOP (DGK) PACKAGE (TOP VIEW) COMP FB CS RT/CT 1 2 3 4 8 7 6 5 VREF VDD OUT GND COMP FB CS RT/CT 1 2 3 4 8 7 6 5 VREF VDD OUT GND 4 www.ti.com UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45 UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45 SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010 pin assignments COMP: This pin provides the output of the error amplifier for compensation. In addition, the COMP pin is frequently used as a control port by utilizing a secondary-side error amplifier to send an error signal across the secondary-primary isolation boundary through an opto-isolator. CS: The current sense pin is the non-inverting input to the PWM comparator. This is compared to a signal proportional to the error amplifier output voltage. A voltage ramp can be applied to this pin to run the device with a voltage mode control configuration. FB: This pin is the inverting input to the error amplifier. The non-inverting input to the error amplifier is internally trimmed to 2.5 V ±1%. GND: Ground return pin for the output driver stage and the logic level controller section. OUT: The output of the on-chip drive stage. OUT is intended to directly drive a MOSFET. The OUT pin in the UCC38C40, UCC38C42 and UCC38C43 is the same frequency as the oscillator, and can operate near 100% duty cycle. In the UCC38C41, UCC38C44 and the UCC38C45, the frequency of OUT is one-half that of the oscillator due to an internal T flipflop. This limits the maximum duty cycle to < 50%. RT/CT: Timing resistor and timing capacitor. The timing capacitor should be connected to the device ground using minimal trace length. VDD: Power supply pin for the device. This pin should be bypassed with a 0.1-μF capacitor with minimal trace lengths. Additional capacitance may be needed to provide hold up power to the device during startup. VREF: 5-V reference. For stability, the reference should be bypassed with a 0.1-μF capacitor to ground using the minimal trace length possible. www.ti.com 5 UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45 UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45 SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010 APPLICATION INFORMATION This device is a pin-for-pin replacement of the bipolar UC3842 family of controllers, the industry standard PWM controller for single-ended converters. Familiarity with this controller family is assumed. The UCC28C4x/UCC38C4x series is an enhanced replacement with pin-to-pin compatibility to the bipolar UC284x/UC384x and UC284xA/UC384xA families. The new series offers improved performance when compared to older bipolar devices and other competitive BiCMOS devices with similar functionality. Note that these improvements discussed below generally consist of tighter specification limits that are a subset of the older product ratings, maintaining drop-in capability. In new designs these improvements can be utilized to reduce the component count or enhance circuit performance when compared to the previously available devices. advantages This device increases the total circuit efficiency whether operating off-line or in dc input circuits. In off-line applications the low start-up current of this device reduces steady state power dissipation in the startup resistor, and the low operating current maximizes efficiency while running. The low running current also provides an efficiency boost in battery operated supplies. low voltage operation Two members of the UCC38C4x family are intended for applications that require a lower start-up voltage than the original family members. The UCC38C40 and UCC38C41 have a turn-on voltage of 7.0 V typical and exhibit hysteresis of 0.4 V for a turn-off voltage of 6.6 V. This reduced start-up voltage enables use in systems with lower voltages, such as 12-V battery systems which are nearly discharged. high speed operation The BiCMOS design allows operation at high frequencies that were not feasible in the predecessor bipolar devices. First, the output stage has been redesigned to drive the external power switch in approximately half the time of the earlier devices. Second, the internal oscillator is more robust with less variation as frequency increases. In addition, the current sense to output delay has been reduced by a factor of three, to 45ns typical. These features combine to provide a device capable of reliable high frequency operation. The UCC38C4x family oscillator is true to the curves of the original bipolar devices at lower frequencies yet extends the frequency programmability range to at least 1MHz. This allows the device to offer pin to pin capability where required yet capable of extending the operational range to the higher frequencies typical of latest applications. When the original UC3842 was released in 1984 most switching supplies operated between 20kHz and 100kHz. Today, the UCC38C4x can be used in designs cover a span roughly ten times higher than those numbers. start/run current improvements The start--up current is only 60 μA typical, a significant reduction from the bipolar device’s ratings of 300uA (UC384xA). For operation over the temperature range of --40 to 85°C the UCC28C4x devices offer a maximum startup current of 100 μA, an improvement over competitive BiCMOS devices. This allows the power supply designer to further optimize the selection of the startup resistor value to provide a more efficient design. In applications where low component cost overrides maximum efficiency the low run current of 2.3 mA, typical, may allow the control device to run directly through the single resistor to (+) rail, rather than needing a bootstrap winding on the power transformer, along with a rectifier. The start/run resistor for this case must also pass enough current to allow driving the primary switching MOSFET, which may be a few milliamps in small devices. 6 www.ti.com UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45 UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45 SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010 APPLICATION INFORMATION ± 1% initial reference voltage The BiCMOS internal reference of 2.5 V has an enhanced design and utilizes production trim to allow initial accuracy of ±1% at room temperature and ± 2% over the full temperature range. This can be used to eliminate an external reference in applications that do not require the extreme accuracy afforded by the additional device. This is very useful for nonisolated dc-to-dc applications where the control device is referenced to the same common as the output. It is also applicable in offline designs that regulate on the primary side of the isolation boundary by looking at a primary bias winding, or perhaps from a winding on the output inductor of a buck-derived circuit. reduced discharge current variation The original UC3842 oscillator did not have trimmed discharged current, and the parameter was not specified on the datasheet. Since many customers attempted to use the discharge current to set a crude deadtime limit the UC3842A family was released with a trimmed discharge current specified at 25°C. The UCC28C4x/UCC38C4x series now offers even tighter control of this parameter, with approximately ±3% accuracy at 25°C, and less than 10% variation over temperature using the UCC28C4x devices. This level of accuracy can enable a meaningful limit to be programmed, a feature not currently seen in competitive BiCMOS devices. The improved oscillator and reference also contribute to decreased variation in the peak to peak variation in the oscillator waveform, which is often used as the basis for slope compensation for the complete power system. soft-start The following diagram provides a typical soft-start circuit for use with the UCC38C42. The values of R and C should be selected to bring the COMP pin up at a controlled rate, limiting the peak current supplied by the power stage. After the soft-start interval is complete the capacitor continues to charge to VREF, effectively removing the PNP transistor from circuit considerations. The optional diode in parallel with the resistor forces a soft-start each time the PWM goes through UVLO and the reference (VREF) goes low. Without the diode,the capacitor otherwise remains charged during a brief loss of supply or brown-out, and no soft-start is enabled upon reapplication of VIN. VREF UCC38C42 COMP 8 1 GND 5 Figure 1 UDG--01072 www.ti.com 7 UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45 UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45 SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010 APPLICATION INFORMATION oscillator synchronization The UCC38C4x oscillator has the same synchronization characteristics as the original bipolar devices. Thus, the information in the Application Note U--100A, UC3842/3/4/5 Provides Low-Cost Current-Mode Control, (TI Literature No. SLUA143) still applies. The application note describes how a small resistor from the timing capacitor-to-ground can offer an insertion point for synchronization to an external clock, (see Figures 2 and 3). Figure 2 shows how the UCC38C42 can be synchronized to an external clock source. This allows precise control of frequency and dead time with a digital pulse train. 8 RT 4 CT UCC38C42 PWM RT / CT VREF SYNCHRONIZATION CIRCUIT INPUT 24 Ω UDG--01069 Figure 2. Oscillator Synchronization Circuit CLOCK INPUT UPPER THRESHOLD LOW HIGH LOW LOWER THRESHOLD PWM OUT ON . OFF . ON . OUTPUT A VCT (ANALOG) UPPER THRESHOLD VCT VSYNC (DIGITAL) LOWER THRESHOLD COMBINED UDG--01070 Figure 3. Synchronization to an External Clock 8 www.ti.com UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45 UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45 SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010 APPLICATION INFORMATION precautions The absolute maximum supply voltage is 20 V, including any transients that may be present. If this voltage is exceeded, device damage is likely. This is in contrast to the predecessor bipolar devices, which could survive up to 30 V. Thus, the supply pin should be decoupled as close to the ground pin as possible. Also, since no clamp is included in the device, the supply pin should be protected from external sources which could exceed the 20 V level. Careful layout of the printed board has always been a necessity for high frequency power supplies. As the device switching speeds and operating frequencies increase the layout of the converter becomes increasingly important. This 8-pin device has only a single ground for the logic and power connections. This forces the gate drive current pulses to flow through the same ground that the control circuit uses for reference. Thus, the interconnect inductance should be minimized as much as possible. One implication is to place the device (gate driver) circuitry close to the MOSFET it is driving. Note that this can conflict with the need for the error amplifier and the feedback path to be away from the noise generating components. circuit applications Figure 4 shows a typical off-line application. F1 T1 AC INPUT 100 Vac -- 240 Vac EMI FILTER REQUIRED RT1 + BR1 R11 C1A C18 R12 D6 C5 C53 C54 R55 SEC COMMON R6 IC2 1 2 3 4 UCC38C44 COMP FB CS RT/CT REF 8 VCC 7 OUT 6 GND 5 K IC3 A R R54 UDG--01071 C13 R16 Q1 IC2 C50 R50 C51 R52 R53 R50 C12 R10 C3 D2 D51 C52 L50 R56 C55 D50 12 V OUT 5V OUT Figure 4. Typical Off-Line Application Figure 5 shows the forward converter with synchronous rectification. This application provides 48 V to 3.3 V at 10 A with over 85% efficiency and uses the UCC38C42 as the secondary-side controller and UCC3961 as the primary-side startup control device. www.ti.com 9 10 L1 4.7uH 3r3V C2 C18 T1 4700pF + Q4 + 0.1uF R21 10 Q3 PWRGND R1 32.4k C25 R27 R26 4.7 D1 R2 1.2k Q1 R4 1.5k 76.8k R3 2.4k R28 100 1 2 3 C22 4.7nF R23 402 4 BAR74 D5 R5 R19 20 4.7 0.047uF + C1 470uF 470uF C19 470uF C20 C17 4700pF C21 1nF R7 10k D2 R20 10 SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010 VinP VinN D3 R8 R9 0.33 5.1k U1 1 OVS ucc3961 SD 12 R10 1k R16 C23 21.5k 680pF 1 9 R17 20k C16 5.6nF 2 St 13 Q2 R6 4.7 UVS 10nF 2 14 BAR74 U4 TPS2832 IN BOOT PGND DT Vcc HIDR BTLO LODR 8 7 6 5 C26 2uF APPLICATION INFORMATION UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45 UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45 Figure 5. Forward Converter with Synchronous Rectification Using the UCC38C42 as the Secondary-Side Controller www.ti.com 3 SS 11 C9 C8 1uF 0.1uF Vdd 4 FB 10 Out 5 Rt PGnd 6 Ref 8 C6 C7 470pF R24 20k R14 20k 40% 1 R13 2 4 300 C10 2.7nF T2 3 R25 20k C11 1500pF R12 200 C12 3300pF 100pF R15 50k 4 3 CS CS FB 7 AGnd Vs C3 C4 0.22uF C24 0.1uF U2 COMP REF 8 R22 0.22uF Vcc UCC38C4x OUT 7 100 C13 R11 46.4k C5 0.1uF 6 C14 1uF Rt/Ct GND 5 D6 + C15 1uF BZX84C15LT1 R18 7.5k UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45 UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45 SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010 TYPICAL CHARACTERISTICS OSCILLATOR FREQUENCY vs TIMING RESISTANCE AND CAPACITANCE 10 M IDISCH - Oscillator Discharge Current - mA CT = 220 pF CT = 470 pF 9.5 OSCILLATOR DISCHARGE CURRENT vs TEMPERATURE 9.0 1M f - Frequency - Hz - CT = 1 nF 100 k 8.5 8.0 10 k CT = 4.7 nF CT = 2.2 nF 1k 1k 10 k RT - Timing Resistance - Ω 100 k 7.5 7.0 -50 -25 0 25 50 75 100 125 TJ - Temperature - °C - Figure 6 ERROR AMPLIFIER FREQUENCY RESPONSE 100 90 80 70 60 Gain - (dB) 50 40 30 20 10 0 1 10 100 1k 10 k 100 k 1M PHASE MARGIN GAIN 200 180 160 Phase Margin - (°) 140 120 100 80 60 40 20 0 10 M Figure 7 COMP to CS OFFSET VOLTAGE (with CS = 0) vs TEMPERATURE 1.8 1.6 1.4 1.2 COMP to CS 1.0 0.8 0.6 0.4 0.2 0.0 f - Frequency - Hz - -50 -25 0 25 50 75 100 125 TJ - Temperature - °C - Figure 8 Figure 9 www.ti.com 11 UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45 UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45 SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010 TYPICAL CHARACTERISTICS REFERENCE VOLTAGE vs TEMPERATURE 5.05 VEAREF - Error Amplifier Reference Voltage - V 5.04 VREF - Reference Voltage - V 5.03 5.02 5.01 5.00 4.99 4.98 4.97 4.96 4.95 -50 -25 0 25 50 75 100 125 2.55 2.54 2.53 2.52 2.51 2.50 2.49 2.48 2.47 2.46 2.45 -50 -25 0 25 50 75 100 125 ERROR AMPLIFIER REFERENCE VOLTAGE vs TEMPERATURE TJ - Temperature - °C - TJ - Temperature - °C - Figure 10 REFERENCE SHORT-CIRCUIT CURRENT vs TEMPERATURE -35 ISC - Reference Short Circuit Current - mA IBIAS - Error Amplifier Input Bias Current - nA -37 -39 -41 -43 -45 -47 -49 -51 -53 -55 -50 -25 0 25 50 75 TJ - Temperature - °C 100 125 200 150 100 50 0 -50 -100 -150 -200 Figure 11 ERROR AMPLIFIER INPUT BIAS CURRENT vs TEMPERATURE -50 -25 0 25 50 75 TJ - Temperature - °C - 100 125 Figure 12 Figure 13 12 www.ti.com UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45 UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45 SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010 TYPICAL CHARACTERISTICS UNDERVOLTAGE LOCKOUT vs TEMPERATURE (UCC38C42 & UCC38C44) 9.0 8.8 VUVLO - UVLO Voltage - V 8.6 8.4 8.2 8.0 7.8 7.6 7.4 7.2 -50 -25 0 25 50 75 100 125 7.0 -50 -25 0 UVLO OFF 25 50 75 TJ - Temperature - °C Figure 15 100 125 UVLO ON UNDERVOLTAGE LOCKOUT vs TEMPERATURE (UCC38C43 & UCC38C45) 16 15 14 VUVLO - UVLO Voltage - V 13 12 11 10 9 8 7 6 UVLO ON UVLO OFF TJ - Temperature - °C - Figure 14 UNDERVOLTAGE LOCKOUT vs TEMPERATURE (UCC38C40 & UCC38C41) 7.3 7.2 7.1 VUVLO - UVLO Voltage - V 7.0 6.9 6.8 6.7 6.6 6.5 6.4 6.3 -50 -25 0 25 50 75 100 UVLO OFF UVLO ON 125 TJ - Temperature - °C Figure 16 www.ti.com 13 UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45 UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45 SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010 TYPICAL CHARACTERISTICS SUPPLY CURRENT vs OSCILLATOR FREQUENCY 25 SUPPLY CURRENT vs TEMPERATURE 3.0 2.9 IDD - Supply Current - mA - 20 1-nF LOAD IDD - Supply Current - mA - 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 NO LOAD 15 10 NO LOAD 5 0 2.0 0k 200 k 400 k 600 k f - Frequency - Hz 800 k 1M -50 -25 0 25 50 75 100 125 TJ - Temperature - °C - Figure 17 OUTPUT RISE TIME AND FALL TIME vs TEMPERATURE 10% to 90% VDD = 12 V tr (1 nF) 100 Figure 18 MAXIMUM DUTY CYCLE vs OSCILLATOR FREQUENCY 40 35 Output Rise and Fall TIme - ns - CT = 220 pF 90 30 Duty Cycle - % tf (1 nF) 80 25 20 70 CT = 1 nF 15 60 10 -50 -25 0 25 50 75 100 125 50 0 500 1000 1500 2000 2500 TJ - Temperature - °C f - Frequency - kHz - Figure 19 Figure 20 14 www.ti.com UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45 UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45 SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010 TYPICAL CHARACTERISTICS MAXIMUM DUTY CYCLE vs TEMPERATURE UCC38C40 UCC38C42 UCC38C43 98 Maximum Duty Cycle - % 50 UCC38C41 UCC38C44 UCC38C45 100 MAXIMUM DUTY CYCLE vs TEMPERATURE Output Rise and Fall TIme - ns 0 25 50 75 100 125 49 96 48 94 47 92 46 90 -50 -25 45 -50 -25 0 25 50 75 100 125 TJ - Temperature - °C - Figure 21 CURRENT SENSE THRESHOLD VOLTAGE vs TEMPERATURE 70 65 tD - CD to OUT Delay Time - ns 1.05 60 55 50 45 40 35 0.90 30 TJ - Temperature - °C Figure 22 1.10 CS TO OUT DELAY TIME vs TEMPERATURE VCS_th - Current Sense Threshold - V - 1.00 0.95 -50 -25 0 25 50 75 100 125 -50 -25 0 25 50 75 100 125 TJ - Temperature - °C TJ - Temperature - °C - Figure 23 Figure 24 www.ti.com 15 UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45 UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45 SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010 Revision History Revision SLUS458D to SLUS458E, 10/2010 1) Updated Operating Juction Temperature in the Recommended Operating Conditions Table, from --55 to 150 to --40 to 105. 2) Updated Available Options Table heading from TA to TA = TJ. 16 www.ti.com PACKAGE OPTION ADDENDUM www.ti.com 18-Apr-2011 PACKAGING INFORMATION Orderable Device UCC28C40D UCC28C40DG4 UCC28C40DGK UCC28C40DGKG4 UCC28C40DGKR UCC28C40DGKRG4 UCC28C40DR UCC28C40DRG4 UCC28C40P UCC28C40PG4 UCC28C41D UCC28C41DG4 UCC28C41DGK UCC28C41DGKG4 UCC28C41DGKR UCC28C41DGKRG4 UCC28C41DR Status (1) Package Type Package Drawing SOIC SOIC MSOP MSOP MSOP MSOP SOIC SOIC PDIP PDIP SOIC SOIC MSOP MSOP MSOP MSOP SOIC D D DGK DGK DGK DGK D D P P D D DGK DGK DGK DGK D Pins 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 Package Qty 75 75 80 80 2500 2500 2500 2500 50 50 75 75 100 100 2500 2500 2500 Eco Plan (2) Lead/ Ball Finish MSL Peak Temp (3) Samples (Requires Login) ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAU N / A for Pkg Type CU NIPDAU N / A for Pkg Type CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAU Level-2-260C-1 YEAR CU NIPDAU Level-2-260C-1 YEAR CU NIPDAU Level-1-260C-UNLIM Addendum-Page 1 PACKAGE OPTION ADDENDUM www.ti.com 18-Apr-2011 Orderable Device UCC28C41DRG4 UCC28C41P UCC28C41PG4 UCC28C42D UCC28C42DG4 UCC28C42DGK UCC28C42DGKG4 UCC28C42DGKR UCC28C42DGKRG4 UCC28C42DR UCC28C42DRG4 UCC28C42P UCC28C42PG4 UCC28C43D UCC28C43DG4 UCC28C43DGK UCC28C43DGKG4 UCC28C43DGKR Status (1) Package Type Package Drawing SOIC PDIP PDIP SOIC SOIC MSOP MSOP MSOP MSOP SOIC SOIC PDIP PDIP SOIC SOIC MSOP MSOP MSOP D P P D D DGK DGK DGK DGK D D P P D D DGK DGK DGK Pins 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 Package Qty 2500 50 50 75 75 100 100 2500 2500 2500 2500 50 50 75 75 80 80 2500 Eco Plan (2) Lead/ Ball Finish MSL Peak Temp (3) Samples (Requires Login) ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CU NIPDAU N / A for Pkg Type CU NIPDAU N / A for Pkg Type CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAU N / A for Pkg Type CU NIPDAU N / A for Pkg Type CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-2-260C-1 YEAR CU NIPDAU Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR Addendum-Page 2 PACKAGE OPTION ADDENDUM www.ti.com 18-Apr-2011 Orderable Device UCC28C43DGKRG4 UCC28C43DR UCC28C43DRG4 UCC28C43P UCC28C43PG4 UCC28C44D UCC28C44DG4 UCC28C44DGK UCC28C44DGKG4 UCC28C44DGKR UCC28C44DGKRG4 UCC28C44DR UCC28C44DRG4 UCC28C44P UCC28C44PG4 UCC28C45D UCC28C45DG4 UCC28C45DGK Status (1) Package Type Package Drawing MSOP SOIC SOIC PDIP PDIP SOIC SOIC MSOP MSOP MSOP MSOP SOIC SOIC PDIP PDIP SOIC SOIC MSOP DGK D D P P D D DGK DGK DGK DGK D D P P D D DGK Pins 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 Package Qty 2500 2500 2500 50 50 75 75 80 80 2500 2500 2500 2500 50 50 75 75 100 Eco Plan (2) Lead/ Ball Finish MSL Peak Temp (3) Samples (Requires Login) ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAU N / A for Pkg Type CU NIPDAU N / A for Pkg Type CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAU N / A for Pkg Type CU NIPDAU N / A for Pkg Type CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAUAG Level-2-260C-1 YEAR Addendum-Page 3 PACKAGE OPTION ADDENDUM www.ti.com 18-Apr-2011 Orderable Device UCC28C45DGKG4 UCC28C45DGKR UCC28C45DGKRG4 UCC28C45DR UCC28C45DRG4 UCC28C45P UCC28C45PG4 UCC38C40D UCC38C40DG4 UCC38C40DGK UCC38C40DGKG4 UCC38C40DGKR UCC38C40DGKRG4 UCC38C40DR UCC38C40DRG4 UCC38C40P UCC38C40PG4 UCC38C41D Status (1) Package Type Package Drawing MSOP MSOP MSOP SOIC SOIC PDIP PDIP SOIC SOIC MSOP MSOP MSOP MSOP SOIC SOIC PDIP PDIP SOIC DGK DGK DGK D D P P D D DGK DGK DGK DGK D D P P D Pins 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 Package Qty 100 2500 2500 2500 2500 50 50 75 75 80 80 2500 2500 2500 2500 50 50 75 Eco Plan (2) Lead/ Ball Finish MSL Peak Temp (3) Samples (Requires Login) ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAU N / A for Pkg Type CU NIPDAU N / A for Pkg Type CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAU N / A for Pkg Type CU NIPDAU N / A for Pkg Type CU NIPDAU Level-1-260C-UNLIM Addendum-Page 4 PACKAGE OPTION ADDENDUM www.ti.com 18-Apr-2011 Orderable Device UCC38C41DG4 UCC38C41DGK UCC38C41DGKG4 UCC38C41DR UCC38C41DRG4 UCC38C41P UCC38C41PG4 UCC38C42D UCC38C42DG4 UCC38C42DGK UCC38C42DGKG4 UCC38C42DGKR UCC38C42DGKRG4 UCC38C42DR UCC38C42DRG4 UCC38C42P UCC38C42PG4 UCC38C43D Status (1) Package Type Package Drawing SOIC MSOP MSOP SOIC SOIC PDIP PDIP SOIC SOIC MSOP MSOP MSOP MSOP SOIC SOIC PDIP PDIP SOIC D DGK DGK D D P P D D DGK DGK DGK DGK D D P P D Pins 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 Package Qty 75 100 100 2500 2500 50 50 75 75 100 100 2500 2500 2500 2500 50 50 75 Eco Plan (2) Lead/ Ball Finish MSL Peak Temp (3) Samples (Requires Login) ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAU N / A for Pkg Type CU NIPDAU N / A for Pkg Type CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAU N / A for Pkg Type CU NIPDAU N / A for Pkg Type CU NIPDAU Level-1-260C-UNLIM Addendum-Page 5 PACKAGE OPTION ADDENDUM www.ti.com 18-Apr-2011 Orderable Device UCC38C43DG4 UCC38C43DGK UCC38C43DGKG4 UCC38C43DGKR UCC38C43DGKRG4 UCC38C43DR UCC38C43DRG4 UCC38C43P UCC38C43PG4 UCC38C44D UCC38C44DG4 UCC38C44DGK UCC38C44DGKG4 UCC38C44DGKR UCC38C44DGKRG4 UCC38C44DR UCC38C44DRG4 UCC38C44P Status (1) Package Type Package Drawing SOIC MSOP MSOP MSOP MSOP SOIC SOIC PDIP PDIP SOIC SOIC MSOP MSOP MSOP MSOP SOIC SOIC PDIP D DGK DGK DGK DGK D D P P D D DGK DGK DGK DGK D D P Pins 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 Package Qty 75 80 80 2500 2500 2500 2500 50 50 75 75 80 80 2500 2500 2500 2500 50 Eco Plan (2) Lead/ Ball Finish MSL Peak Temp (3) Samples (Requires Login) ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAU N / A for Pkg Type CU NIPDAU N / A for Pkg Type CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAU N / A for Pkg Type Addendum-Page 6 PACKAGE OPTION ADDENDUM www.ti.com 18-Apr-2011 Orderable Device UCC38C44PG4 UCC38C45D UCC38C45DG4 UCC38C45DGK UCC38C45DGKG4 UCC38C45DGKR UCC38C45DGKRG4 UCC38C45DR UCC38C45DRG4 UCC38C45P UCC38C45PG4 Status (1) Package Type Package Drawing PDIP SOIC SOIC MSOP MSOP MSOP MSOP SOIC SOIC PDIP PDIP P D D DGK DGK DGK DGK D D P P Pins 8 8 8 8 8 8 8 8 8 8 8 Package Qty 50 75 75 80 80 2500 2500 2500 2500 50 50 Eco Plan (2) Lead/ Ball Finish MSL Peak Temp (3) Samples (Requires Login) ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) Green (RoHS & no Sb/Br) CU NIPDAU N / A for Pkg Type CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAUAG Level-2-260C-1 YEAR CU NIPDAU Level-1-260C-UNLIM CU NIPDAU Level-1-260C-UNLIM CU NIPDAU N / A for Pkg Type CU NIPDAU N / A for Pkg Type (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Addendum-Page 7 PACKAGE OPTION ADDENDUM www.ti.com 18-Apr-2011 Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. OTHER QUALIFIED VERSIONS OF UCC28C41, UCC28C43, UCC28C45 : • Automotive: UCC28C41-Q1 • Enhanced Product: UCC28C43-EP, UCC28C45-EP NOTE: Qualified Version Definitions: • Automotive - Q100 devices qualified for high-reliability automotive applications targeting zero defects • Enhanced Product - Supports Defense, Aerospace and Medical Applications Addendum-Page 8 PACKAGE MATERIALS INFORMATION www.ti.com 28-Jan-2011 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing MSOP SOIC MSOP SOIC MSOP SOIC MSOP SOIC MSOP SOIC MSOP SOIC MSOP SOIC SOIC MSOP SOIC MSOP DGK D DGK D DGK D DGK D DGK D DGK D DGK D D DGK D DGK 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 330.0 330.0 330.0 330.0 330.0 330.0 330.0 330.0 330.0 330.0 330.0 330.0 330.0 330.0 330.0 330.0 330.0 330.0 12.4 12.4 12.4 12.4 12.4 12.4 12.4 12.4 12.4 12.4 12.4 12.4 12.4 12.4 12.4 12.4 12.4 12.4 5.3 6.4 5.3 6.4 5.3 6.4 5.3 6.4 5.3 6.4 5.3 6.4 5.3 6.4 6.4 5.3 6.4 5.3 B0 (mm) 3.4 5.2 3.4 5.2 3.4 5.2 3.4 5.2 3.4 5.2 3.4 5.2 3.4 5.2 5.2 3.4 5.2 3.4 K0 (mm) 1.4 2.1 1.4 2.1 1.4 2.1 1.4 2.1 1.4 2.1 1.4 2.1 1.4 2.1 2.1 1.4 2.1 1.4 P1 (mm) 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 W Pin1 (mm) Quadrant 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 Q1 Q1 Q1 Q1 Q1 Q1 Q1 Q1 Q1 Q1 Q1 Q1 Q1 Q1 Q1 Q1 Q1 Q1 UCC28C40DGKR UCC28C40DR UCC28C41DGKR UCC28C41DR UCC28C42DGKR UCC28C42DR UCC28C43DGKR UCC28C43DR UCC28C44DGKR UCC28C44DR UCC28C45DGKR UCC28C45DR UCC38C40DGKR UCC38C40DR UCC38C41DR UCC38C42DGKR UCC38C42DR UCC38C43DGKR 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 28-Jan-2011 Device Package Package Pins Type Drawing SOIC MSOP SOIC MSOP SOIC D DGK D DGK D 8 8 8 8 8 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 330.0 330.0 330.0 330.0 330.0 12.4 12.4 12.4 12.4 12.4 6.4 5.3 6.4 5.3 6.4 B0 (mm) 5.2 3.4 5.2 3.4 5.2 K0 (mm) 2.1 1.4 2.1 1.4 2.1 P1 (mm) 8.0 8.0 8.0 8.0 8.0 W Pin1 (mm) Quadrant 12.0 12.0 12.0 12.0 12.0 Q1 Q1 Q1 Q1 Q1 UCC38C43DR UCC38C44DGKR UCC38C44DR UCC38C45DGKR UCC38C45DR 2500 2500 2500 2500 2500 *All dimensions are nominal Device UCC28C40DGKR UCC28C40DR UCC28C41DGKR UCC28C41DR UCC28C42DGKR UCC28C42DR UCC28C43DGKR UCC28C43DR UCC28C44DGKR UCC28C44DR UCC28C45DGKR UCC28C45DR Package Type MSOP SOIC MSOP SOIC MSOP SOIC MSOP SOIC MSOP SOIC MSOP SOIC Package Drawing DGK D DGK D DGK D DGK D DGK D DGK D Pins 8 8 8 8 8 8 8 8 8 8 8 8 SPQ 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 Length (mm) 346.0 340.5 346.0 340.5 346.0 340.5 346.0 340.5 346.0 340.5 346.0 340.5 Width (mm) 346.0 338.1 346.0 338.1 346.0 338.1 346.0 338.1 346.0 338.1 346.0 338.1 Height (mm) 29.0 20.6 29.0 20.6 29.0 20.6 29.0 20.6 29.0 20.6 29.0 20.6 Pack Materials-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 28-Jan-2011 Device UCC38C40DGKR UCC38C40DR UCC38C41DR UCC38C42DGKR UCC38C42DR UCC38C43DGKR UCC38C43DR UCC38C44DGKR UCC38C44DR UCC38C45DGKR UCC38C45DR Package Type MSOP SOIC SOIC MSOP SOIC MSOP SOIC MSOP SOIC MSOP SOIC Package Drawing DGK D D DGK D DGK D DGK D DGK D Pins 8 8 8 8 8 8 8 8 8 8 8 SPQ 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 Length (mm) 346.0 340.5 340.5 346.0 340.5 346.0 340.5 346.0 340.5 346.0 340.5 Width (mm) 346.0 338.1 338.1 346.0 338.1 346.0 338.1 346.0 338.1 346.0 338.1 Height (mm) 29.0 20.6 20.6 29.0 20.6 29.0 20.6 29.0 20.6 29.0 20.6 Pack Materials-Page 3 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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