PT5020 Series Positive Input/Negative Output Integrated Switching Regulator SLTS025B (Revised 12/19/2001) Features Description • Negative Output • Input Voltage Range: +4.75 to +7 Volts • Laser-Trimmed • Small Footprint • Soft Start • 5-Pin Mount Option (Suffixes L & M) The PT5020 series of integrated switching regulators (ISRs) convert a positive input voltage, typically +5V, to a negative output voltage for a wide range of analog and datacom applications. These Plus to Minus ISRs incorporate a “Buck-Boost” topology and are packaged in the 3-pin, single in-line pin (SIP) package configuration. Pin-Out Information Pin 1 Standard Application +V in 1 PT5020 –V out 3 2 C1 Function Vin 2 GND 3 Vout C2 100µF + COM COM C1 = Optional ceramic (1-5µF) C2 = Required Electrolytic (100µF) Ordering Information PT5021 o = -3.3 Volts PT5022 o = -5 Volts PT5023 o = -9 Volts PT5024 o = -12 Volts PT5025 o = -15 Volts PT5026 o = -5.2 Volts PT5027 o = -8.0 Volts PT5028 o = -6.5 Volts PT5029 o = -5.5 Volts PT5030 o = -6.0 Volts PT5031 o = -1.7 Volts PT Series Suffix (PT1234x ) Case/Pin Configuration Vertical Horizontal SMD Horizontal, 2-pin Tab SMD, 2-Pin Tab Order Suffix Package Code * N A C M L (EAD) (EAA) (EAC) (EAM) (EAL) * Previously known as package styles 100/110. (Reference the applicable package code drawing for the dimensions and PC board layout) NOTE: PT5020 ISRs are not Short-Circuit Protected. Specifications (Unless otherwise stated, T a =25°C, Vin =5V, I o =Iomax, C2 =100µF) PT5020 SERIES Characteristics Output Current Symbol Io Conditions Over Vin range Min Vo= –1.7V to –6.5V Vo= –9V Vo= –12V Vo= –15V Typ Max Units 0.25 (1) 0.10 (1) 0.10 (1) 0.10 (1) — — — — 1.0 0.60 0.50 0.30 A 4.75 — 7 (2) V Input Voltage Range Vin Over Io range Output Voltage Tolerance ∆Vo Over Vin Range Ta = -20°C to SOA limit (3) — ±1.5 ±3 %Vo Line Regulation Regline Over Vin range — ±0.5 ±1 %Vo Load Regulation Regload Iomin ≤ Io ≤ Iomax — ±0.5 ±1 %Vo Efficiency η Io =0.5 Iomax — 75 — % Vo Ripple (pk-pk) Vr 20MHz bandwidth — ±2 ±5 %Vo Transient Response ttr 25% load change Vo over/undershoot — — 500 3.0 — 5.0 µSec %Vo Current Limit Ilim — 150 — %Iomax Inrush Current Iir tir On start up — — 1.0 (3) 1.0 — — A mSec Switching Frequency ƒs Over Io range 0.8 500 1 650 1.2 800 MHz kHz Operating Temperature Range Ta — -20 — +85 (4) °C Thermal Resistance θja Free Air Convection (40-60LFM) — 50 — °C/W Storage Temperature Ts -40 — +125 °C Vo =1.7 to 8V Vo ≥8 V Mechanical Shock Per Mil-STD-883D, Method 2002.3 1 msec, Half Sine, mounted to a fixture — 500 — G’s Mechanical Vibration Per Mil-STD-883D, 20-2000 Hz Suffixes N, A, & C Suffixes L & M — — 5 20 — — G’s Weight Suffixes N, A, & C Suffixes L & M — — 4.5 6.5 (5) — — grams Notes: (1) (2) (3) (4) (5) The ISR will operate at no load with reduced specifications. For applications with input voltages greater than 7 VDC, use the PT78NR100 Series. The inrush current stated is above the normal input current for the associated output load. See Safe Operating Area curves or consult the factory for the appropriate derating The tab pins on the 5-pin mount package types (suffixes L & M) must be soldered. For more information see the applicable package outline drawing. For technical support and more information, see inside back cover or visit www.ti.com Typical Characteristics PT5020 Series Positive Input/Negative Output Integrated Switching Regulator PT5024 (-12VDC) PT5022 (-5VDC) (See Note A) Efficiency vs Output Current Efficiency vs Output Current 100 10 0 90 90 Vin Efficiency - % Efficiency - % (See Note A) 7.0V 6.5V 6.0V 5.5V 5.0V 4.75V 80 70 60 V in 80 7.0 V 6.5 V 6.0 V 5.5 V 5.0 V 4.7 5V 70 60 50 50 40 40 0 0 .1 0 .2 0 .3 0 .4 0 .5 0 0 .2 Iout-(Amps) 0 .4 0 .6 0 .8 1 Iout-(Amps) Ripple Voltage vs Output Current Ripple Voltage vs Output Current 10 0 160 140 V in 4 .7 5 V 5 .0 V 5 .5 V 6 .0 V 6 .5 V 7 .0 V 100 80 60 Ripple-(mV) Ripple-(mV) 80 120 40 Vin 4 .7 5V 5 .0 V 5 .5 V 6 .0 V 6 .5 V 7 .0 V 60 40 20 20 0 0 0 0.1 0.2 0.3 0.4 0 0.5 0.2 Iout-(Amps) Power Dissipation vs Output Current 0.6 0.8 1 Power Dissipation vs Output Current 2 2.5 1.5 2 Vin 4.75V 5.0V 5.5V 6.0V 6.5V 7.0V 1 PD-(Watts) PD-(Watts) 0.4 Iout-(Amps) Vin 4.75V 5.0V 5.5V 6.0V 6.5V 7.0V 1.5 1 0.5 0.5 0 0 0 0.1 0.2 0.3 0.4 0.5 0 0.2 Iout-(Amps) Safe Operating Area (VIN=5V) (See Note B) 0.6 0.8 1 Safe Operating Area (VIN=5V) (See Note B) 90 90 80 80 70 60 A i rfl o w 50 90 LFM 60 LFM 40 0 LFM 30 Ambient Temperature - (C°) Ambient Temperature - (C°) 0.4 Iout-(Amps) 70 Airflow 60 0 LFM 50 60 LFM 40 90 LFM 30 20 20 0 .0 0 .1 0 .2 0 .3 Maximum Output Current - (Amps) 0 .4 0 .5 0 0.2 0.4 0.6 0.8 1 Maximum Output Current - (Amps) 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: Thermal derating graphs are developed in free-air convection cooling, which corresponds to approximately 40–60LFM of airflow. For technical support and more information, see inside back cover or visit www.ti.com 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. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. 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