PT6900 Series 12 Watt 5V/3.3V Input Plus to Minus Voltage Converter SLTS041A (Revised 6/30/2000) * * * * * +5V/+3.3V Input Voltage Negative Output Remote Sense Adjustable Output Voltage 23-pin SIP Package The PT6900 is designed to supply regulated negative voltages for powering the latest ECL (-5.2V) and GaAs (-2.0V) ICs used in high-speed fiber optic communications. A 330F electrolytic capacitor is required on the input and output for proper operation. Please note that this product is not short-circuit protected. The PT6900 is a series of highperformance ISRs, that provide plus to minus voltage conversion, up to 12 watt in a 23-pin SIP package. Pin-Out Information Pin Function Standard Application V ADJ Remote Sense 2 3-7 +VIN 22 PT6900 + Cin 9-15 16-21 -V OUT 8 Cout + GND GND Remote Sense C in = Required 330F electrolytic C out = Required 330F electrolytic Ordering Information Pin Function +5V Input PT6904 = -2.0V PT6901 = -5.2V PT6902 PT6905 PT6903 = -1.5V 1 Do not connect 13 GND 2 Vout Adjust 14 GND 3 Vin 15 GND 4 Vin 16 Vout 5 Vin 17 Vout 6 Vin 18 Vout 7 Vin 19 Vout 8 Remote Sense GND 20 Vout +3.3V Input PT Series Suffix (PT1234X) 9 GND 21 Vout 10 GND 22 Remote Sense Vout 11 GND 23 Do not connect 12 GND Case/Pin Configuration Vertical Through-Hole Horizontal Through-Hole Horizontal Surface Mount N A C (For dimensions and PC board layout, see Package Styles 1100 and 1110.) Specifications PT6900 SERIES Characteristics (Ta= 25C unless noted) Symbols Output Current Io Conditions Ta = +25C, natural convection Vo = -2.0V / -1.5V Vin =5.0V Vo = -5.2V Vin =3.3V Vo = -2.0V Vo = -5.2V 0.1A Io I max Input Voltage Range Output Voltage Tolerance Vo Output Adjust Range Vo PT6901 PT6902/PT6903 PT6904/PT6905 Nominal Vin, Io = I max 0C Ta +60C Pin 14 to Vo or GND Vo = -2.0V Vo = -5.2V Vo = -1.5V Min Typ Max 0.1 (1) 0.1 (1) 0.1 (1) 0.1 (1) -- -- -- -- 6.0 3.5 5.0 2.5 4.5 3.1 Units (2) (2) A (2) (2) A -- -- 5.5 3.6 V Vo - 0.05 -- Vo + 0.05 V -1.4 -2.7 -1.2 -- -- -- -4.4 -6.5 -3.4 V Line Regulation Regline Over Vin range, I o =I max -- 0.5 1.0 % Load Regulation Regload Vin =V nom, 0.1 Io Imax -- 0.5 1.0 % Vo Ripple/Noise Vn Vin = V nom, Io =I max Transient Response with Cout = 330F ttr Vos Io step between 0.5xImax Vo over/undershoot Vo = -1.5V / -2.0V Vo = -5.2V and I max -- -- -- -- 40 50 200 200 -- -- -- -- Efficiency Vin =+5V, Io =0.5xImax Vo = -1.5V Vo = -2.0V Vo = -5.2V -- -- -- 65 70 77 -- -- -- % Vo = -2.0V Vo = -5.2V -- -- 67 75 -- -- % Vin = +3.3V, Io =0.5xImax mV Sec mV Switching Frequency o Over Vin and Io ranges 500 -- 600 kHz Absolute Maximum Operating Temperature Range Ta Over Vin Range 0 -- +85 (2) C -40 -- +125 C Vertical/Horizontal -- 28/33 -- grams Storage Temperature Ts Weight -- Notes: (1) ISR-will operate down to no load with reduced specifications. (2) See SOA curves or contact the factory for the approrpiate derating. For technical support and more information, see inside back cover or visit www.ti.com/powertrends Vout Typical Characteristics PT6900 Series 12 Watt 5V/3.3V Input Plus to Minus Voltage Converter 5.0V Input Voltage 3.3V Input Voltage (See Note A) Efficiency vs Output Current (See Note A) Efficiency vs Output Current 90 90 80 70 PT6902 PT6901 PT6903 60 Efficiency - % Efficiency - % 80 PT6905 PT6904 70 60 50 40 50 0 1 2 3 4 5 0 6 1 2 Iout (A) Power Dissipation vs Output Current 4 5 Power Dissipation vs Output Current 8 8 6 6 PT6902 PT6901 PT6903 4 Pd - Watts Pd - Watts 3 Iout (A) 2 PT6905 PT6904 4 2 0 0 0 1 2 3 4 5 6 0 1 2 Iout (A) 3 4 5 Iout (A) Ripple vs Output Current Ripple vs Output Current 50 40 40 30 PT6902 PT6901 PT6903 20 Ripple - mV Ripple - mV 30 PT6905 PT6904 20 10 10 0 0 0 1 2 3 4 5 6 0 1 2 Iout (A) Safe Operating Area, PT6901 (Vin =5.0V) (See Note B) 4 5 Safe Operating Area, PT6902 (Vin =5.0V) 90 90 80 80 70 Airflow 200LFM 120LFM 60LFM N at co nv 60 50 40 Ambient Temperature ( C) Ambient Temperature ( C) 3 Iout (A) 70 (See Note B) Airflow 200LFM 120LFM 60LFM Nat conv 60 50 40 30 30 20 20 0 1 2 3 Iout (A) 4 5 6 0 0.5 1 1.5 2 2.5 3 3.5 4 Iout (A) Note A: All data listed in the above graphs has been developed from actual products tested at 25C. This data is considered typical data for the DC-DC Converter. Note B: SOA curves represent operating conditions at which internal components are at or below manufacturer's maximum operating temperatures For technical support and more information, see inside back cover or visit www.ti.com/powertrends Application Notes PT6900/6910 Series The negative output voltage of the Power Trends PT6900 Series ISRs may be adjusted higher or lower than the factory trimmed pre-set voltage with the addition of a single external resistor. Table 1 gives the allowable adjustment range for each model in the series as Va (min) and Va (max). Figure 1 22 Vo(sense) Refer to Figure 1 and Table 2 for both the placement and value of the required resistor, either (R1) or R2 as appropriate. Notes: 1. Only a single 1% resistor is required in either the (R1) or R2 location. Do not use (R1) and R2 simultaneously. Place the resistor as close to the ISR as possible. 2. Never connect capacitors from Vo adjust to either GND, Vout, or the Sense pins. Any capacitance added to the Vo adjust pin will affect the stability of the ISR. 3. If the sense pins are not being used, the resistors (R1) and R2 can be connected to Vout and GND respectively. 4. An increase in the output voltage must be accompanied by a corresponding reduction in the maximum output current. The revised maximum output current must be reduced to the equivalent of 12Watts. i.e. Iout (max) = 12 Va PT6900 +Vin GND Vo(adj) 9 - 15 2 -Vo 16 - 21 Vout(-) GND(sense) 8 (R1) (Down) + Adjust Up: An increase in the output voltage is obtained by adding a resistor R2, between pin 2 (Vo adjust) and pin 8 (Remote Sense GND). Adjust Down: Add a resistor (R1), between pin 2 (Vo adjust) and pin 22 (Remote Sense Vo). 3-7 +Vin C in R2 (Up) + Adjusting the Output Voltage of the PT6900/PT6910 Positive to Negative Converter Series C out L O A D COM COM The respective values of (R1) [adjust down], and R2 [adjust up], can also be calculated using the following formulas. (R1) = R2 = 24.9 (Va - Vr) - Rs k (Vo - Va) 24.9 Vr - Rs (Va - Vo) k Where: Vo Va Vr Rs = Original output voltage = Adjusted output voltage = Reference voltage in Table 1 = The resistance given in Table 1 Adc, where Va is the adjusted output voltage. Table1 PT6900/PT6910 ADJUSTMENT RANGE AND FORMULA PARAMETERS Series Pt # 5.0V Bus 3.3V Bus PT6903/13 PT6901/11 PT6904/14 PT6902/12 PT6905/15 Vo (nom) Va (min) -1.5V -2.0V -5.2V -1.2V -1.4V -2.7V Va (max) Vr -3.4V -4.5V -6.5V -1.0V -1.0V -0.92V ) Rs (k 12.7 10.0 17.4 For technical support and more information, see inside back cover or visit www.ti.com/powertrends Application Notes continued PT6900/6910 Series Table 2 PT6900/PT6910 ADJUSTMENT RESISTOR VALUES Series Pt # 5.0V Bus 3.3V Bus Vo (nom) Va (req'd) PT6903/13 PT6901/11 PT6904/14 -2.0Vdc -1.5Vdc PT6902/12 PT6905/15 -5.2Vdc Series Pt # 5.0V Bus 3.3V Bus Vo (nom) Va (req'd) PT6903/13 -1.5Vdc PT6901/11 PT6904/14 -2.0Vdc PT6902/12 PT6905/15 -5.2Vdc -1.2 (3.9)k -3.9 3.1k (39.7)k -1.3 (24.7)k -4.0 2.5k (46.5)k -1.4 (86.9)k (6.6)k -4.1 1.9k (54.6)k (14.9)k -4.2 1.3k (64.3)k (76.1)k -1.5 -1.6 236.0k (27.4)k -4.3 0.8k -1.7 112.0k (48.1)k -4.4 0.4k (90.9)k -1.8 70.3k (89.6)k -4.5 0.0k (106.0)k -1.9 49.6k (214.0)k -4.6 (135.0)k -2.0 37.1k -4.7 (171.0)k -2.1 28.8k 239.0k -4.8 (224.0)k -2.2 22.9k 115.0k -4.9 (313.0)k -2.3 18.4k 73.0k -5.0 (491.0)k -2.4 15.0k 52.3k -5.1 (1020.0)k -2.5 12.2k 39.8k -5.2 -2.6 9.9k 31.5k -5.3 212.0k -2.7 8.1k 25.6k (0.3)k -5.4 97.1k -2.8 6.5k 21.1k (2.1)k -5.5 59.0k -2.9 5.1k 17.7k (4.0)k -5.6 39.9k -3.0 3.9k 14.9k (6.1)k -5.7 28.4k -3.1 2.9k 12.6k (8.5)k -5.8 20.8k -3.2 2.0k 10.8k (11.0)k -5.9 15.3k -3.3 1.1k 9.2k (13.8)k -6.0 11.2k -3.4 0.4k 7.8k (16.9)k -6.1 8.1k -3.5 6.6k (20.4)k -6.2 5.5k -3.6 5.6k (24.3)k -6.3 3.4k -3.7 4.7k (28.7)k -6.4 1.7k -3.8 3.8k (33.8)k -6.5 0.2k R1 = (Blue) R2 = Black For technical support and more information, see inside back cover or visit www.ti.com/powertrends PACKAGE OPTION ADDENDUM www.ti.com 20-Aug-2011 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/ Ball Finish MSL Peak Temp NRND SIP MODULE EJH 23 10 TBD Call TI Level-1-215C-UNLIM PT6902C NRND SIP MODULE EJK 23 8 TBD Call TI Level-1-215C-UNLIM NRND 10 SIP MODULE EJH 23 TBD Call TI Level-1-215C-UNLIM PT6903A OBSOLETE SIP MODULE EJJ 23 TBD Call TI Call TI PT6903C OBSOLETE SIP MODULE EJK 23 TBD Call TI Call TI PT6903N OBSOLETE SIP MODULE EJH 23 TBD Call TI Call TI PT6904A OBSOLETE SIP MODULE EJJ 23 TBD Call TI Call TI PT6904C OBSOLETE SIP MODULE EJK 23 TBD Call TI Call TI PT6904N OBSOLETE SIP MODULE EJH 23 TBD Call TI Call TI EJH 23 TBD Call TI Level-1-215C-UNLIM PT6905N NRND SIP MODULE 10 Samples (Requires Login) PT6901N PT6902N (3) (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. 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. Addendum-Page 1 PACKAGE OPTION ADDENDUM www.ti.com 20-Aug-2011 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. 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