PTB48511 | DigiCamel IC Datasheet

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Technical content

Features

Dual Complementary Outputs
Input Voltage Range:

36 V to 75 V

On/Off Enable for Sequencing
1500 VDC Isolation
Over-Current Protection
Over Voltage Protection (PTB48511 only)
Over-T emperature Shutdown
Under-Voltage Lockout
T emp Range: –40 to +100 °C
Industry Standard Outline
Fixed Frequency Operation
Synchronizes with PTB48500
Powers line driver ICs for AC-7 and other xDSL chipsets
Safety Approvals: EN60950 UL/cUL60950

Description

The PTB4851x series of isolated DC/DC converter modules produce a complementary pair of regulated supply voltages for powering line-driver ICs in xDSL telecom applications. The mod- ules operate from a standard telecom (-48 V) central office (CO) supply and can provide up to a 72 W of power in a balanced load configuration. The A-suffix module (±5 V) is designed to power the line driver ICs for the AC-7 ADSL chipset. Other voltage options will power other analog applications requiring a complementary supply with relatively balanced loads. Both the PTB48510 and PTB48511 include an “on/off” enable control, output current limit, over-temperature protection, and input under-voltage lockout (UVLO). The PTB48511 adds output over-voltage protection (OVP). The control inputs, “Enable” and “Sync In,” are compatible with the “EN Out” and “Sync Out” signals of the PTB48500 DC/DC converter. This allows the power-up and switching fre- quency of the PTB4851x modules to be directly controlled from a PTB48500. T ogether the PTB48500 and PTB4851xA converters meet all the system power and sequencing requirements of the AC-7 ADSL chipset. The PTB4851x uses double-sided surface mount technology contruction. The package size is based on the industry standard outline and does not require a heatsink. Both through-hole and surface mount pin configurations are available. PTB4851x +Vin Enable –Vin –VOUT COM 6 L O A D –V OUT +V IN –V IN COM Sync In ±V o Adj 7 +V OUT +V OUT L O A D SL TS219C - FEBRUARY 2004 - REVISED OCTOBER 2004

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Ordering Information

Code Description Pkg Ref. (2) AH Horiz. T/H (ERK) AS SMD, Standard (3) (ERL) Output Voltage (PTB4851x❒xx) Code V oltage A ±5 V B ±12 V C± 1 5 V (4) Notes: (1) Output Over-Voltage Protection. (2) Reference the applicable package reference drawing for the dimensions and PC board layout (3) “Standard” option specifies 63/37, Sn/Pb pin solder material. (4) ±15-V output is not available with the PTB48511 Pin Descriptions +Vin: The positive input supply for the module with respect to –Vin. When powering the module from a –48 V telecom central office supply, this input is connected to the primary system ground. –Vin: The negative input supply for the module, and the 0 VDC reference for the ‘Enable*’, and ‘Sync In’ signals. When the module is powered from a +48-V supply, this input is connected to the 48-V Return. +Vout: The positive output supply voltage, which is ref- erenced to the ‘COM’ node. The voltage at ‘+Vout’ has the same magnitude, but is the complement to that at ‘-V out’. –Vout: The negative output supply voltage, which is ref- erenced to the ‘COM’ node. The voltage at ‘-V out’ has the same magnitude, but is the c omplement to that at ‘+V out’. COM: The secondary return reference for the module’s regulated output voltages. This node is dc isolated from the input supply pins. ±Vo Adjust: Using a single resistor, this pin allows the magnitude of both ‘+V out’ and ‘–Vout’ to be adjusted together, either higher or lower than their preset value. If not used, this pin should be left open circuit. Enable*: This is an open-collector (open-drain) negative logic input that enables the module output. This pin is referenced to -Vin. A logic ‘0’ at this pin enables the module’s outputs, and a high impedance disables the outputs. If this feature is not used the pin should be con- nected to –V in. Note: C onnecting this input directly to the “EN Out” pin of the PTB4850x enables the output voltages from both converters (PTB4850x and PTB4851x) to power up in sequence. Sync In: This pin is used when the PTB4851x and PTB4850x DC/DC converter modules are used together. Connect- ing this pin to the ‘ Sync Out ’ of the PTB4850x module allows the PTB4851x to be synchronized to the same switch conversion frequency as the PTB4850x. PTB48510, PTB48511 Environmental and General Specifications (Unless otherwise stated, all voltages are with respect to –V in) Characteristics Symbols Conditions Min Typ Max Units Input Voltage Range V in Over output load range 36 48 75 VDC Isolation Voltage Input–output/input–case 1500 — — V Capacitance Input to output — 1500 — pF Resistance Input to output 10 — — M Ω Operating T emperature Range T a Over Vin Range –40 — +85 °C Over-T emperature Protection OTP Shutdown threshold — 115 (i) — °CHysterisis — 10 — Solder Reflow T emperature T reflow Surface temperature of module body or pins 235 (ii) °C Storage T emperature T s — –40 — 125 °C Mechanical Shock Per Mil-STD-883D, Method 2002.3 T/H — 500 — G’s1 msec, ½ Sine, mounted SMD — 250 — Mechanical Vibration Mil-STD-883D, Method 2007.2 T/H — 10 — G’s20-2000 Hz SMD — 5 — Weight — — 28 — grams Flammability — Meets UL 94V-O Notes: (i) This parameter is guaranteed be design (ii) During reflow of SMD package version do not elevate peak temperature of the module, pins or internal components above the s tated maximum. Dual Complementary-Output DC/DC Converter for DSL SL TS219C - FEBRUARY 2004 - REVISED OCTOBER 2004 Base Pt. No. (PTB4851❒xxx) Order Prefix Description PTB48510xxx Basic Model PTB48511xxx Adds Output OVP (1)

For technical support and further information visit http://power.ti.com PTB48510A, PTB48511A Dual Complementary-Output DC/DC Converter for DSL Specifications (Unless otherwise stated, T a =25°C, Vin =48 V , Cin =0 µF, ±Co =0 µF, |+Io | = |–Io |, and |±Io | =0.5 |±Io |max) PTB4851xA Characteristic Symbol Conditions Min Typ Max Units Output Power P o T otal output power from ±Vo 0— 6 5 (1) W Output Current |±Io | Over Vin range, |+Io | – |–Io | ≤ 0.1 A 0 — 6.5 (2) A Output Load Imbalance |+Io | – |–Io || +Io | ≥0.1 A, |–Io | ≥ 0.1 A 0 — 1 (3) A Output Voltage |±Vo | Inlcudes set-point, line, |+Io | – |–Io | ≤ 0.1 A 4.75 (2) 5 5.25 (2) V –40 ≤Ta ≤+85°C T emperature Variation ∆Regtemp –40 ≤Ta ≤ +85°C, |±Io | =0.1 A +V o —± 1— %Vo–Vo —± 1— Line Regulation ∆Regline Over Vin range, balanced load ±V o — ±0.1 ±0.4 %V o Load Regulation ∆Regload Over ±Io range, balanced load ±V o — ±0.2 ±0.4 %V o Efficiency η —8 6—% Vo Ripple (pk-pk) ±V r 20 MHz bandwidth, — 20 30 (4) mVppCo =10 µF tantalum capacitor T ransient Response t tr 0.1 A/µs load step, 50% to 75% ±Iomax — 30 — µs ∆Vtr |±Vo | over/undershoot — ±1.0 — %V o Over Current Threshold I otrip V in =36 V 6.8 7.5 10 Areset followed by auto-recovery Over-Voltage Threshold |±Vo | trip Outputs latched off (5) PTB48510 N/A — N/A VPTB48511 5.9 — 7 Short Circuit Current Continuous over-current trip, |±Io |pk — 12.5 — A Output Voltage Adjust Range |±Vo | adj |+Vo | and |–Vo | adjust simulataneously 3.5 — 5.5 V Switching Frequency ƒ s Over Vin and Io ranges 440 470 (6) 500 kHz Under-Voltage Lockout V inon V in increasing — 33 — V Vinoff V in decreasing — 32 — On/Off Enable (pin 3) Referenced to –V in (pin 4) Input High Voltage V IH +3.6 — +75 (7) V Input Low Voltage V IL –0.2 — +0.8 Input Low Current I IL ——– 1m A Standby Input Current I in standby pin 3 open circuit — 2 — mA Start-up Time t on |±Io | =1 A, |±Vo | rising 0 to 0.95 |±Vo | typ 6 1 02 2m s Internal Input Capacitance C in —3 —µ F External Output Capacitance ±C o Capacitance from either output to COM (pin 6) 0 — 5,000 (8) µF Reliability MTBF Per Bellcore TR-332 PTB48510A 2.7 — — 106 Hrs50% stress, Ta =40°C, gnd benign PTB48511A 2.5 — — Notes: (1) See Safe Operating Area curves or contact the factory for the appropriate derating. (2) Under balanced load conditions, load current flowing out of +V o is balanced to within ±0.1 A of that flowing into –V o. (3) A load imbalance is the difference in current flowing from +V o to –Vo. The module can operate with a higher imbalance but with reduced specifications. (4) Output voltage ripple is measured with a 10 µF tantalum capacitor connected from +V o (pin 5) or –V o (pin 8), to COM (pin 6). (5) If the over-voltage threshold is exceeded by either regulated output the module will shut down, turning both outputs off. Th is is a latched condition, which can only by reset by removing and then re-applying the module’s input power. (6) This is the free-running frequency. The module can be made to synchronize with the PTB48500 when both modules are used toget her in a system. (7) The On/Off Enable (pin 3) has an internal pull-up and may be controlled with an open-collector (or open-drain) transistor . T he input is diode protected and may be connected to +V in. The open-circuit voltage is 5 V max. If it is left open circuit the converter will operate when input power is applied. (8) Electrolytic capacitors with very low equivalent series resistance (ESR) may induce instability when used on the output. Con sult the factory before using capacitors with organic, or polymer-aluminum type electrolytes. SL TS219C - FEBRUARY 2004 - REVISED OCTOBER 2004

For technical support and further information visit http://power.ti.com Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the converter. Note B: Under a balanced load, current flowing out of +Vo is equal to that flowing into –Vo. Note C: SOA curves represent the conditions at which internal components are at or below the manufacturer’s maximum operating temperatures. Derating limits apply to modules soldered directly to a 4 in. × 4 in. double-sided PCB with 1 oz. copper. Typical Characteristics PTB4851xA Characteristic Data @V IN =48 V (See Notes A) Efficiency vs Load Current (See Note B) Power Dissipation vs Load Current (See Note B) Safe Operating Area PTB4851xA (See Note C) Balanced Load, V IN =48 VDC (See Note B) PTB48510A, PTB48511A Cross Regulation, ∆|+VO| vs |–IO|, with |+IO| = 1 A SL TS219C - FEBRUARY 2004 - REVISED OCTOBER 2004 65-W Complementary-Output DC/DC Converter for DSL 0123456 |± Iout| (A) Ambient Temperature (°C) 400LFM 200LFM 100LFM Nat Conv Airflow Cross Regulation, ∆ |–VO| vs |+IO|, with |–IO| = 1 A 100 0123456 |±IOUT | (Balanced) A Efficiency - % 0123456 |±IOUT | (Balanced) A Pd - Watts -300 -200 -100 100 200 300 0123456 Load Current |–IO | - A Cross Regulation |+Io| - mV -300 -200 -100 100 200 300 0123456 Load Current |+IO | - A Cross Regulation |–Io| - mV

For technical support and further information visit http://power.ti.com PTB48510B, PTB48511B Dual Complementary-Output DC/DC Converter for DSL SL TS219C - FEBRUARY 2004 - REVISED OCTOBER 2004 Specifications (Unless otherwise stated, T a =25°C, Vin =48 V , Cin =0 µF, ±Co =0 µF, |+Io | = |–Io |, and |±Io | =0.5 |±Io |max) PTB4851xB Characteristic Symbol Conditions Min Typ Max Units Output Power P o T otal output power from ±Vo 0— 7 2 (1) W Output Current |±Io | Over Vin range, |+Io | – |–Io | ≤ 0.1 A 0 — 3 (2) A Output Load Imbalance |+Io | – |–Io || +Io | ≥0.1 A, |–Io | ≥ 0.1 A 0 — 1 (3) A Output Voltage |±Vo | Inlcudes set-point, line, |+Io | – |–Io | ≤ 0.1 A 11.6 (2) 12 12.4 (2) V –40 ≤Ta ≤+85°C T emperature Variation ∆Regtemp –40 ≤Ta ≤ +85°C, |±Io | =0.1 A ±V o —± 1—% V o Line Regulation ∆Regline Over Vin range, balanced load ±V o — ±0.05 ±0.5 %V o Load Regulation ∆Regload Over ±Io range, balanced load ±V o — ±0.1 ±1 %V o Efficiency η —8 9—% Vo Ripple (pk-pk) ±V r 20 MHz bandwidth, — 20 80 (4) mVppCo =10 µF tantalum capacitor T ransient Response t tr 0.1 A/µs load step, 50% to 75% ±Iomax — 30 — µs ∆Vtr |±Vo | over/undershoot — ±1 — %V o Over Current Threshold I otrip V in =36 V 3.3 3.8 5 Areset followed by auto-recovery Over-Voltage Threshold |±Vo | trip Outputs latched off (5) PTB48510A N/A — N/A VPTB48511A 14 15.8 17 Short Circuit Current Continuous over-current trip, |±Io |pk —6 —A Output Voltage Adjust Range |±Vo | adj |+Vo | and |–Vo | adjust simulataneously 6.5 — 13.4 V Switching Frequency ƒ s Over Vin and Io ranges 440 480 (6) 520 kHz Under-Voltage Lockout V inon V in increasing — 33 — V Vinoff V in decreasing — 32 — On/Off Enable (pin 3) Referenced to –V in (pin 4) Input High Voltage V IH +3.6 — +75 (7) V Input Low Voltage V IL –0.2 — +0.8 Input Low Current I IL ——– 1m A Standby Input Current I in standby pin 3 open circuit — 2 — mA Start-up Time t on |±Io | =1 A, |±Vo | rising 0 to 0.95 |±Vo | typ 6 1 21 8m s Internal Input Capacitance C in —3 —µ F External Output Capacitance ±C o Capacitance from either output to COM (pin 6) 0 — 3,000 (8) µF Reliability MTBF Per Bellcore TR-332 PTB48510B 2.8 — — 106 Hrs50% stress, Ta =40°C, gnd benign PTB48511B 2.5 — — Notes: (1) See Safe Operating Area curves or contact the factory for the appropriate derating. (2) Under balanced load conditions, load current flowing out of +V o is balanced to within ±0.1 A of that flowing into –V o. (3) A load imbalance is the difference in current flowing from +V o to –Vo. The module can operate with a higher imbalance but with reduced specifications. (4) Output voltage ripple is measured with a 10 µF tantalum capacitor connected from +V o (pin 5) or –V o (pin 8), to COM (pin 6). (5) If the over-voltage threshold is exceeded by either regulated output the module will shut down, turning both outputs off. Th is is a latched condition, which can only by reset by removing and then re-applying the module’s input power. (6) This is the free-running frequency. The module can be made to synchronize with the PTB48500 when both modules are used toget her in a system. (7) The On/Off Enable (pin 3) has an internal pull-up and may be controlled with an open-collector (or open-drain) transistor . T he input is diode protected and may be connected to +V in. The open-circuit voltage is 5 V max. If it is left open circuit the converter will operate when input power is applied. (8) Electrolytic capacitors with very low equivalent series resistance (ESR) may induce instability when used on the output. Con sult the factory before using capacitors with organic, or polymer-aluminum type electrolytes.

For technical support and further information visit http://power.ti.com Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the converter. Note B: Under a balanced load, current flowing out of +Vo is equal to that flowing into –Vo. Note C: SOA curves represent the conditions at which internal components are at or below the manufacturer’s maximum operating temperatures. Derating limits apply to modules soldered directly to a 4 in. × 4 in. double-sided PCB with 1 oz. copper. Typical Characteristics PTB4851xB Characteristic Data @V IN =48 V (See Notes A) Efficiency vs Load Current (See Note B) Power Dissipation vs Load Current (See Note B) Safe Operating Area PTB4851xB (See Note C) Balanced Load, V IN =48 VDC (See Note B) PTB48510B, PTB48511B Cross Regulation, ∆ |+VO| vs |–IO|, with |+IO| = 1 A SL TS219C - FEBRUARY 2004 - REVISED OCTOBER 2004 Dual Complementary-Output DC/DC Converter for DSL Cross Regulation, ∆|–VO| vs |+IO|, with |–IO| = 1 A 0 0.5 1 1.5 2 2.5 3 |±Iout| (A) Ambient Temperature (°C) 400LFM 200LFM 100LFM Nat conv Airflow 100 00 . 511 . 522 . 53 |±IOUT | (Balanced) A Efficiency - % 00 . 511 . 522 . 53 |±IOUT | (Balanced Load) A Pd - Watts -400 -200 200 400 00 . 511 . 522 . 53 Load Current |–IO | - A Cross Regulation |+Vo| - mV -400 -200 200 400 00 . 511 . 522 . 53 Load Current |+IO | - A Cross Regulation |–Vo| - mV

For technical support and further information visit http://power.ti.com PTB48510C Dual Complementary-Output DC/DC Converter for DSL SL TS219C - FEBRUARY 2004 - REVISED OCTOBER 2004 Specifications (Unless otherwise stated, T a =25°C, Vin =48 V , Cin =0 µF, ±Co =0 µF, |+Io | = |–Io |, and |±Io | =0.5 |±Io |max) PTB48510C Characteristic Symbol Conditions Min Typ Max Units Output Power P o T otal output power from ±Vo 0— 6 6 (1) W Output Current |±Io | Over Vin range, |+Io | – |–Io | ≤ 0.1 A 0 — 2.2 (2) A Output Load Imbalance |+Io | – |–Io || +Io | ≥0.1 A, |–Io | ≥ 0.1 A 0 — 1 (3) A Output Voltage |±Vo | Inlcudes set-point, line, |+Io | – |–Io | ≤ 0.1 A 14.5 (2) 15 15.5 (2) V –40 ≤Ta ≤+85°C T emperature Variation ∆Regtemp –40 ≤Ta ≤ +85°C, |±Io | =0.1 A ±V o —± 1—% V o Line Regulation ∆Regline Over Vin range, balanced load ±V o — ±0.05 ±0.5 %V o Load Regulation ∆Regload Over ±Io range, balanced load ±V o — ±0.1 ±1 %V o Vo Ripple (pk-pk) ±V r 20 MHz bandwidth, — 50 100 (4) mVppCo =10 µF tantalum capacitor T ransient Response t tr 0.1 A/µs load step, 50% to 75% ±Iomax — 30 — µs ∆Vtr |±Vo | over/undershoot — ±1 — %V o Over Current Threshold I otrip V in =36 V 2.45 3 3.85 Areset followed by auto-recovery Short Circuit Current Continuous over-current trip, |±Io |pk — 4.5 — A Output Voltage Adjust Range |±Vo | adj |+Vo | and |–Vo | adjust simulataneously 7.2 — 16.7 V Switching Frequency ƒ s Over Vin and Io ranges 440 480 (5) 520 kHz Under-Voltage Lockout V inon V in increasing — 33 — V Vinoff V in decreasing — 32 — On/Off Enable (pin 3) Referenced to –V in (pin 4) Input High Voltage V IH +3.6 — +75 (6) V Input Low Voltage V IL –0.2 — +0.8 Input Low Current I IL ——– 1m A Standby Input Current I in standby pin 3 open circuit — 2 — mA Start-up Time t on |±Io | =1 A, |±Vo | rising 0 to 0.95 |±Vo | typ 6 1 21 8m s Internal Input Capacitance C in —3 —µ F External Output Capacitance ±C o Capacitance from either output to COM (pin 6) 0 — 3,000 (7) µF Reliability MTBF Per Bellcore TR-332 2.8 — — 10 6 Hrs50% stress, Ta =40°C, gnd benign Notes: (1) See Safe Operating Area curves or contact the factory for the appropriate derating. (2) Under balanced load conditions, load current flowing out of +V o is balanced to within ±0.1 A of that flowing into –V o. (3) A load imbalance is the difference in current flowing from +V o to –Vo. The module can operate with a higher imbalance but with reduced specifications. (4) Output voltage ripple is measured with a 10 µF tantalum capacitor connected from +V o (pin 5) or –V o (pin 8), to COM (pin 6). (5) This is the free-running frequency. The module can be made to synchronize with the PTB48500 when both modules are used toget her in a system. (6) The On/Off Enable (pin 3) has an internal pull-up and may be controlled with an open-collector (or open-drain) transistor . T he input is diode protected and may be connected to +V in. The open-circuit voltage is 5 V max. If it is left open circuit the converter will operate when input power is applied. (7) Electrolytic capacitors with very low equivalent series resistance (ESR) may induce instability when used on the output. Con sult the factory before using capacitors with organic, or polymer-aluminum type electrolytes.

For technical support and further information visit http://power.ti.com Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the converter. Note B: Under a balanced load, current flowing out of +Vo is equal to that flowing into –Vo. Note C: SOA curves represent the conditions at which internal components are at or below the manufacturer’s maximum operating temperatures. Derating limits apply to modules soldered directly to a 4 in. × 4 in. double-sided PCB with 1 oz. copper. Typical Characteristics PTB48510C Characteristic Data @V IN =48 V (See Notes A) Efficiency vs Load Current (See Note B) Power Dissipation vs Load Current (See Note B) Safe Operating Area PTB48510C (See Note C) Balanced Load, V IN =48 VDC (See Note B) PTB48510C Cross Regulation, ∆|+VO| vs |–IO|, with |+IO| = 1 A SL TS219C - FEBRUARY 2004 - REVISED OCTOBER 2004 Dual Complementary-Output DC/DC Converter for DSL Cross Regulation, ∆ |–VO| vs |+IO|, with |–IO| = 1 A 100 |±IOUT | (Balanced) A Efficiency - % |±IOUT | (Balanced) A Pd - Watts -300 -200 -100 100 200 300 Load Current |-IO | - A Cross Regulation |+VO | - mV -300 -200 -100 100 200 300 Load Current |+IO | - A Cross Regulation |-VO | - mV |±IOUT | (A) Ambient Temperature (°C) 400LFM 200LFM 100LFM Nat conv Airflow

For technical support and further information visit http://power.ti.com Adjusting the Output Voltages of the PTB4851x Series of DC/DC Converters The PTB48510 & PTB48511 DC/DC converters produce a balanced pair of complimentary output voltages. They are identified +V OUT and -V OUT, respectively. The mag- nitude of both output voltages can be adjusted together as a pair, higher or lower, by up to ±10% of their nominal. The adjustment method uses a single external resistor. The value of the resistor d etermines the adjustment magnitude, and its placement determines whether the magnitude is increased or decreased. The resistor values can be calculated using the appropriate formula (see below). The formula constants are given in T able 1-1. The placement of each resistor is as follows. Adjust Up:

3 T o increase the magnitude of both output

voltages, place a re sistor R1 between ±V o1 Adj (pin 7) and the -VOUT (pin 8) voltage rail; see Figure 1-1(a). Figure 1-1b PTB48510 & PTB48511 Calculation of Resistor Adjust Values The value of the adjust resistor is calculated using one of the following equations. Use the equation for R 1 to adjust up, or (R2) to adjust down. R1 [Adjust Up] = Vr Ro – Rs kΩ2 (Va – Vo ) (R2) [Adjust Down] = Ro (2 Va – Vr ) – Rs kΩ 2 (Vo – Va ) Where: V o = Magitude of the original ±V OUT Va = Magnitude of the adjusted voltage Vr = The reference voltage from T able 1-1 Ro = The resistance value in T able 1-1 Rs = The series resistance from T able 1-1Figure 1-1a Adjust Down: T o decrease the magnitude of both output voltages, add a resistor (R2), between V o Adj (pin 7) and the +VOUT (pin 5) voltage rail; see Figure 1-1(b). Notes: 1. A 0.05 W rated resistor may be used. The tolerance should be 1%, with a temperature stability of 100 ppm/°C or better. Place the resistor in either the R 1 or (R2) location, as close to the converter as possible. 2. Never connect capacitors to the ±V o Adj pin. Capacitance added to this pin can affect the stability of the regulated output. 3. The over-voltage protection (PTB48511x) is nominally set to 25% above the original output voltage set-point. Increasing the magnitude of the output voltages reduces the margin between the output voltage and the over- voltage (OV) protection threshold. This could make the module more sensitive to OV faults, as a result of random noise and load transients. Note: An OV fault is a latched condition that shuts down the converter’s outputs. The fault can only be cleared by cycling the Enable pin, or by momentarily removing input power to the module. R 1 Adjust Up +V OUT ±Vo Adj +V OUT PTB48510 –VOUT –VOUT COM 6 (R2) Adj Down +V OUT ±Vo Adj +V OUT PTB48510 –VOUT –VOUT COM 6 Table 1-1 ADJUSTMENT RANGE AND FORMULA PARAMETERS Series Pt. No. PTB4851xA PTB4851xB PTB48510C Vo(nom) 5 V 12 V 15 V Va(min) 3.5 V 6.5 V 7.2 V Va(max) 5.5 V 13.4 V 16.7 V Vr 2.495 V 2.495 V 2.495 V Ro (kΩ ) 7.5 18.2 22.1 Rs (kΩΩΩΩΩ ) 9.09 16.9 16.9

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Product Information

PTB48511 specifications and overview.

Summary

Dual Complementary-Output DC/DC Converter for DSL

Description

Dual Complementary-Output DC/DC Converter for DSL

Source title PTB48511 Datasheet(PDF) - Texas Instruments

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