Features. High Efficiency Dual Output. (See Ordering Information)

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1 PT69 Series 6- Dual Output -V/.-V Input Integrated Switching Regulator SLTSB Revised (4/8/) eatures High Efficiency Dual Output (See Ordering Information) Ideal Power Source for DSPs V/.V Input 6 Rated (Both Outputs) Internal Power-up Sequencing Single On/Off Control Independent djust/trim Remote Sensing (Vo & Vo ) Soft-Start Short-Circuit Protection (coordinated shutdown) 7-pin Space-Saving Package Solderable Copper Case Description The PT69 Excalibur power modules are a series of high-efficiency dual-output regulators, housed in a solderable spacesaving package. The dual output is ideal for DSP applications that require a second voltage source for a processor core. Both outputs from the PT69 regulator modules are rated to deliver a full 6 load current simultaneously, and are internally sequenced to comply with the power-up requirements of popular DSP ICs. Each output can be independently adjusted with a single external resistor, and incorporates an output sense to compensate for voltage drop between the regulator and load. short-circuit load fault at either output will result in the coordinated shutdown of both voltages. Ordering Information PT694o =./. Volts PT694o =./.8 Volts PT694o =./. Volts PT6944o =./. Volts o =./.8 Volts o =./. Volts o =./. Volts -Denotes models that will also operate off.v input bus. PT Series Suffix (PT4x) Case/Pin Order Package Configuration Suffix Code Vertical N (ENE) Horizontal (EN) SMD C (ENG) (Reference the applicable package code drawing for the dimensions and PC layout) Pin-Out Information Pin unction STBY* Vo djust Vo Sense 4 Vo Vo 6 Vo 7 GND 8 GND 9 GND GND GND GND V in 4 V in Pin unction V in 6 V in 7 GND 8 GND 9 GND GND GND GND Vo 4 Vo Vo 6 Vo Sense 7 Vo djust STBY* pin: Open = Outputs enabled Ground = Outputs disabled Standard pplication STBY* Vo Sense Vo Sense Vo V IN 6 PT69 Vo C IN µ 7 7 Co µ Co µ L O D L O D C in = Req d µ * electrolytic GND GND Co /Co = Req d µ * electrolytic *µ for Oscon or low ESR tantalum (see application notes)

2 PT69 Series 6- Dual Output -V/.-V Input Integrated Switching Regulator General Specifications (Unless otherwise stated, T a = C, V in =V, C in =µ, Co =µ, Co =µ, and Io /Io =Iomax) PT69 Series Characteristic Symbol Conditions Min Typ Max Units Output Current I o () T a = C, natural convection. () 6 T a = C, LM airflow. () 6 Input Voltage Range V in Over I o Range Vo.V.. Vo >.V 4.. V Set Point Voltage Tolerance V o tol ±. ± %V o Temperature Variation Reg temp T a 8 C, I o =I o min ±. %V o Line Regulation Reg line Over V in range ± ± mv Load Regulation Reg load Over I o range ± ± mv Total Output Voltage Variation V otot Includes set-point, line, load, V o =.V ±4 ± T a 8 C V o =.V ± ±7 V o =.8V ±8 ±4 mv V o =.V ± ±4 V o =.V ± ±6 Efficiency η V in =V, Io = Io =4 PT694 9 PT694 9 PT694 PT6944 % V o Ripple (pk-pk) V r MHz bandwidth mv pp Transient Response t tr /µs load step, % to % I omax µs V tr V o over/undershoot ± mv Short Circuit Threshold I sc(pk) Reset followed by auto-recovery () Switching requency ƒ o Over V in range khz STBY* (Pin ) Referenced to GND (pin 7) Input High Voltage V IH Open (4) Input Low Voltage V IL..4 V Input Low Current I IL -. m Quiescent Current I in standby pin to GND m External Output Capacitance Both outputs TBD µ Operating Temperature Range T a Over V in Range () 8 (6) C Storage Temperature T s C Mechanical Shock Per Mil-STD-88D, Method. msec, ½ Sine, mounted TBD G s Mechanical Vibration Mil-STD-88D Method 7., - Hz Vertical Horizontal TBD (7) TBD (7) G s Weight Vertical/Horizontal 4 grams lammability Meets UL 94V-O Notes: () The outputs, Vo and Vo, have similar characteristics. The applicable performance parameters are defined according to output voltage. () The minimum output current applies to each output. The module will operate at no load with reduced specifications. () short-circuit load fault at either output causes the module to continuously reset, affecting both outputs. (4) The STBY* control (pin ) has an internal pull-up, and if it is left open circuit the module will operate when input power is applied. The open-circuit voltage is approximately the input voltage, V in. Refer to the application notes for interface considerations. () or operating temperatures below C, Cin, Co, and Co must have stable characteristics. Use either tantalum or Oscon capacitors. (6) See Safe Operating rea curves for the specific output voltage combination, or contact the factory for the appropriate derating. (7) Only the case pins on through-hole pin configurations (N & ) must be soldered. or more information see the applicable package outline drawing. Input/Output Capacitors: The PT69 series requires a µ electrolytic capacitor at the input and both outputs for proper operation (µ for Oscon or low ESR tantalum). In addition, the input capacitance must be rated for a minimum of.rms ripple current. or transient or dynamic load applications, additional capacitance may be required. Refer to the application notes for more information.

3 PT69 Series 6- Dual Output -V/.-V Input Integrated Switching Regulator Performance Characteristics; V in =V (See Note ) Performance Characteristics; V in =.V (See Note ) 9 Efficiency vs. Io & Io Load Currents 9 Efficiency vs. Io & Io Load Currents Efficiency - % 8 7 PT694 PT694 PT694 PT6944 Efficiency - % Iout () [Both Outputs ] Vo Ripple vs. Io & Io Load Currents Vo Ripple vs. Io & Io Load Currents Vo Ripple - mv PT694 PT694 PT694 PT6944 Vo Ripple - mv Vo Ripple vs. Io & Io Load Currents Vo Ripple vs. Io & Io Load Currents Vo Ripple - mv PT694 PT694 PT694 PT944 Vo Ripple - mv Power Dissipation Vs. Io & Io Load Currents Power Dissipation vs. Io & Io Load Currents 4 4 Pd - Watts Pd - Watts Note : Characteristic data has been developed from actual products tested at C. This data is considered typical data for the Converter.

4 PT69 Series 6- Dual Output -V/.-V Input Integrated Switching Regulator Safe Operating rea Curves; V in =V (See Note B) Safe Operating rea Curves; V in =.V/V (See Note B) PT694 (.V/.V) (.V/.8V) LM LM LM LM LM LM Iout () [Both outputs] PT694 (.V/.8V) (.V/.V) LM LM LM LM LM LM PT694 (.V/.V) (.V/.V) LM LM LM LM LM LM PT6944 (.V/.V) LM LM LM 4 6 Note B: SO curves represent the conditions at which internal components are at or below the manufacturer s maximum operating temperatures

5 pplication Notes PT69 Series Operating eatures of the PT69 Series of Dual-Output Voltage Regulators Over-Current Protection The PT69 series of regulators incorporate independent current limit protection at both outputs (Vo & Vo ) with a periodic shutdown of both outputs. pplying a load current, in excess of the current limit threshold to either output, results in the shutdown of both voltages after a short period; typically ms. ollowing shutdown the module periodically attempts to recover by executing a soft start power-up at intervals of approximately ms. If the overcurrent fault persists, each attempted restart will result in a corresponding over-current trip and shutdown. During the ms period prior to each successive shutdown, the output with the load fault may not reach full regulation. Power-Up Voltage Sequencing The output voltages from the PT69 series regulators are independently regulated, and internally sequenced to meet the power-up requirements of popular microprocessors and DSP chipsets. igure shows the output voltage waveforms of a PT694 (.V/.8V) after either input power is applied, or the regulator is enabled. In this example turning Q off in igure, removes the low-voltage signal at pin and enables the regulator. ollowing a delay of about ms, Vo and Vo rise together until the lower voltage, Vo, reaches its regulation voltage. Vo then continues to rise until both outputs reach full regulation. The total powerup time is less than ms, and is relatively independent of load, temperature, and output capacitance. The turn-off of Q corresponds to the rise in V STBY. The waveforms were measured with a V input voltage, and with resistive loads of 4 at both the Vo and Vo outputs. Standby Control The output voltages from the PT69 may be disabled using the regulator s Standby control. The standby function is provided by the STBY* control (pin ). If pin is left open-circuit the regulator operates normally, and provides a regulated output at both Vo (pins 4 6) and Vo (pins ) whenever a valid input source voltage is applied to V in (pins 6) with respect to GND (pins 7- & 7 ). pplying a low-impedance sink to ground at pin, simultaneously disables both regulated outputs. This places the regulator in standby mode, and reduces the input current drawn by the ISR to typically m. The Standby control may also be used to maintain both regulator outputs at zero volts during the period that input power is applied. The standby pin is ideally controlled using an open-collector (or open-drain) discrete transistor (See igure ). The open-circuit voltage is the input voltage, V in. igure V Sns V Sns 4 6 Vo Vo V in 6 Vin PT69 Vo Vo Inhibit COM C IN Q BSS8 STBY* V dj V dj 7 Co Co COM igure V (V/Div) V (V/Div) Vstby (V/Div) Notes:.The standby control input is Not compatible with TTL or other devices that incorporate a totem-pole output drive. Use only a true open-collector device, preferably a discrete bipolar transistor (or MOSET). To ensure the regulator output is disabled, the control pin must be pulled to less than.4vdc with a low-level.m sink to ground. Do not use an an external pull-up resistor. The control pin has its own internal pull-up. dding an external pull-up could disable the over-current protection. The open-circuit voltage of the STBY* pin is the input voltage, V in. HORIZ SCLE (ms/div)

6 Notes PT69 Series Capacitor Recommendations for the Dual-Output PT69 Regulator Series Input Capacitor: The recommended input capacitance is determined by. ampere minimum ripple current rating and µ minimum capacitance (µ for Oscon or low ESR tantalum). Ripple current and <mω equivalent series resistance (ESR) values are the major considerations, along with temperature, when designing with different types of capacitors. Tantalum capacitors have a recommended minimum voltage rating of twice the maximum DC voltage C ripple. This is necessary to insure reliability for input voltage bus applications Output Capacitors: Co /Co The ESR of the required capacitors, Co & Co must not be greater than mω. Electrolytic capacitors have poor ripple performance at frequencies greater than khz but excellent low frequency transient response. bove the ripple frequency, ceramic capacitors are necessary to improve the transient response and reduce any high frequency noise components apparent during higher current excursions. Preferred low ESR type capacitor part numbers are identified in Table. Tantalum Capacitors Tantalum type capacitors can be used for the output but only the VX TPS series, Sprague 9D/94/9 series or Kemet T49/T series. These capacitors are recommended over many other tantalum types due to their higher rated surge, power dissipation, and ripple current capability. s a caution the TJ series by VX is not recommended. This series has considerably higher ESR, reduced power dissipation, and lower ripple current capability. The TJ series is less reliable than the VX TPS series when determining power dissipation capability. Tantalum or Oscon types are recommended for applications where ambient temperatures fall below C. Capacitor Table Table identifies the characteristics of capacitors from a number of vendors with acceptable ESR and ripple current (rms) ratings. The number of capacitors required at both the input and output buses is identified for each capacitor type. This is not an extensive capacitor list. Capacitors from other vendors are available with comparable specifications. Those listed are for guidance. The RMS ripple current rating and ESR (Equivalent Series Resistance at khz) are critical parameters necessary to insure both optimum regulator performance and long capacitor life. Table : Input/Output Capacitors Capacitor Vendor/ Component Series Working V oltage Value(µ ) Capacitor (ESR) Equivalent Series Resistance Characteristics 8 C Maximum Ripple Current(Irms) Physical Size(mm) Quantity Input Bus Output Bus Vendor Number Panasonic C V µ µ µ.6ω.6ω.7ω m m m.x.x 8x. N/R EEUCE6S EEUCV9S EEUCC United Chemi-Con LXV/S/ LXZ 6V V V µ 4µ µ µ.ω.ω.ω. Ω m m m m 8x x x. x. N/R LXZ6VBM8XLL LXZB47MXLL SM SM Nichicon PL/ PM V µ µ 4µ.48Ω.6 Ω.46Ω m m 4m 6x.x 8x UPLV6MHH6 UPLVMHH6 UPMH47MHH6 Panasonic C (Surface Mtg) V 6V µ µ µ.4ω.6ω.ω m m 6m x6..x6 x. N/R EEVCLQ EEVCVLQ EEVCCP Oscon- SS SV V V V µ µ µ.ω.ω.4 Ω >m >m m.x..x..x. SSM SVM SVM SV= Surface Mount VX Tantalum TPS V V V µ µ µ. Ω. Ω.9Ω >m >m >m 7.Lx 4.Wx 4.H TPSV7MR TPSV7MR TPSV7MR Kemet T/ T49 V V µ µ.ω.7ω =.Ω m >m 7.Lx.7W x 4.H TX7MS T49X7MS Sprague 94D V V µ µ.4ω.6ω m >m 7.Lx 6.Wx 4.H 4D7XRT 94D7XDT N/R Not recommended. The voltage rating does not meet the minimum operating limits.

7 pplication Notes PT69 Series djusting the Output Voltages of the PT69 Dual-Output ISRs Each output voltage from the PT69 series of integrated switching regulators (ISRs) can be independently adjusted higher or lower than the factory trimmed pre-set voltage. The voltages, Vo and Vo may each be adjusted either up or down using a single external resistor. Table gives the adjustment range for both Vo and Vo for each model in the series as V a (min) and V a (max). Note that Vo must always be lower than Vo. Vo djust Up: To increase the output, add a resistor R between pin (Vo djust) and pins 7- (GND). Vo djust Down: dd a resistor (R ), between pin (Vo djust) and pin (Vo Sense). Vo djust Up: dd a resistor R 4 between pin 7 (Vo djust) and pins 7 (GND). Vo djust Down: dd a resistor (R ) between pin 7 (Vo djust) and pin 6 (Vo Sense). Refer to igure and Table for both the placement and value of the required resistor. The adjust up and adjust down resistor values can also be calculated using the following formulas. Be sure to select the correct formula parameter from Table for the output and model being adjusted. (R ) or (R ) = R or R 4 = (V a.9 ) Rs kω V o V a 9 V a V o R s kω Where: V o = Original output voltage, (Vo or Vo ) V a = djusted output voltage R s = The series resistance from Table Notes:.Use only a single % resistor in either the (R ) or R location to adjust Vo, and in the (R ) or R 4 location to adjust Vo. Place the resistor as close to the module as possible..vo must always be at least.v lower than Vo..When adjusting Vo higher than the factory pre-set output voltage the minimum input voltage must be revised as follows. Vo =.V: V in (min) = (Vo )V or 4.V, whichever is greater. Vo =.V: Vo =.V is the maximum output voltage allowed for operation off a.v input bus. If Vo is adjusted above.v, the input voltage must be a minimum of 4.V. 4.Vo and Vo may be adjusted down to an alternative bus voltage by making, (R ) or (R ) respectively, a zero ohm link. Refer to the Table footnotes for guidance..never connect capacitors to either the Vo djust or Vo djust pins. ny capacitance added to these control pins will affect the stability of the respective regulated output. igure Vo Sense Vo Sense 6 V IN 6 Vin V Sns V Sns PT69 Vo Vo 4 6 Vo Vo V dj V dj (R) (R) C IN Co Co L O D L O D R R4 GND GND

8 pplication Notes PT69 Series Table DJUSTMENT RNGE ND ORMUL PRMETERS Vo Bus Vo Bus () Series Pt # PT694/4/4/44 /47/48 PT694 PT694/46 PT694/47 PT6944/48 dj. Resistor (R)/R (R)/R (R)/R4 (R)/R4 (R)/R4 (R)/R4 V o(nom).v.v.v.8v.v.v Va(min).V *.8V *.8V *.V *.V *.V Va(max).V.V.V.V.4V.V R s (kω) Ref. Note 4: * (R) = Zero-ohm link (R) = Zero-ohm link Table DJUSTMENT RESISTOR VLUES Vo Bus Series Pt # PT694/4/4/44 /47/48 dj. Resistor (R)/R (R)/R V o(nom).v.v V a(req d).8 (.).8 (.6)kΩ.9 (.7)kΩ.9 (6.)kΩ. (9.)kΩ. (.6)kΩ. (7.)kΩ. (.7)kΩ. (.)kω. (4.)kΩ. (7.)kΩ. (8.7)kΩ.4 (7.)kΩ.4 (97.)kΩ. (.)kω. (.)kω 67.kΩ #.6 (4.)kΩ 77.kΩ #.6 (6.9)kΩ 47.kΩ #.7 (.)kω.kω #.7 (.6)kΩ.kΩ #.8 (8.)kΩ.8 (.)kω.9 (.)kω.9 (8.6)kΩ. (.)kω. (.)kω. (.)kω..4.kω..kω.6.kω.7.kω R /R = (Blue), R /R 4 = Black # See Note Vo Bus Series Pt # PT694 PT694/46 PT694/47 PT6944/48 dj. Resistor (R)/R4 (R)/R4 (R)/R4 (R)/R4 V o(nom).v.8v.v.v V a(req d). (.6)kΩ. (.)kω. (4.)kΩ.kΩ. (.)kω.6kω. (.)kω.6kω.4 (.)kω.6kω.4 (.)kω 6.6kΩ. (.)kω.kω. (6.)kΩ.kΩ.6 (.)kω.kω.6 (.)kω.kω.7 (.)kω.kω.7 (.)kω 6.kΩ.8 (.)kω 9.6kΩ.8 (.6)kΩ.kΩ.7kΩ.9 (.7)kΩ.kΩ.kΩ.9 (6.)kΩ.kΩ.kΩ. (9.)kΩ.kΩ 8.kΩ. (.6)kΩ 6.kΩ 6.4kΩ. (7.)kΩ.kΩ.kΩ. (.7)kΩ.7kΩ.9kΩ. (.)kω.kω.9kω. (4.)kΩ.kΩ. (7.)kΩ.kΩ. (8.7)kΩ.6kΩ.4 (7.)kΩ.kΩ.4 (97.)kΩ.. 67.kΩ.6 77.kΩ.6 47.kΩ.7.kΩ.7.kΩ.8 7.kΩ.8.7kΩ.9 9.kΩ.9 7.kΩ..kΩ..kΩ

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