L5970 STMICROELECTRONICS [STMicroelectronics], L5970 Datasheet
L5970
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L5970 Summary of contents
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... CERAMIC 220pF May 2003 DESCRIPTION The L5970D is a step down monolithic power switching regulator capable to deliver output voltages from 1.2V to 35V. The device uses an internal P-Channel D-MOS transistor (with a typical Rdson of 250m ) as switching element to minimize the size of the ex- ternal components ...
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... L5970D PINS CONNECTION (Top View) PINS FUNCTION N. Name 1 OUT Regulator Output. 2 SYNC Master/slave synchronization. 3 INH A logical signal (active high) disables the device. If INH not used the pin must be grounded. When it is open an internal pull-up disable the device. 4 COMP E/A output for frequency compensation. ...
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... CC ( 0.74V sync V = 2.33V sync I = 3mA source no load 1.65V sync 5mA REF V = 4.4V to 36V 0mA REF V = 4.4V to 36V 5mA REF L5970D Min. Typ. Max 0.25 0.5 * 1.5 1.87 2.25 * 212 250 280 225 250 275 0 100 1.220 1.235 1.25 * 1.198 1.235 1.272 ...
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... L5970D Figure 1. Junction Temperature vs. Output Current (SO8) *) Tj(°C) 130 120 110 100 Vcc=5V 90 Tamb=25° 0.2 0.4 0.6 0.8 1 Io(A) Figure 2. Junction Temperature vs. Output Current (SO8) *) Tj(°C) 130 120 110 100 Vcc=12V 90 Tamb=25° 0.2 0.4 0.6 0.8 1 Io(A) Figure 3. Junction Temperature vs. Output Current (SO8) *) Tj(° ...
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... Vcc = 12V 1.4 1.2 - (°C) Figure 8. Shutdown Current vs.Junction Temperature Ishd ( Vcc = 12V - (°C) Figure 9. Switching Frequency vs.Junction Temperature Fsw (KHz) 260 250 240 230 220 100 150 -50 100 150 L5970D Vcc = 12V 100 Tj (C) 150 5/10 ...
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... Vo=3. Vo=2. Vo=1. Vcc= 0.1 0.2 0.3 0.4 0.5 0.6 Io (A) 6/10 VREF 6 1 VCC 8 L5970D SYNC COMP INH. GND R3 4.7K D03IN1437 Part Number Description 10 F, 25V 100 F, 10V 220pF, 5%, 50V 22nF, 10%, 50V 5.6K, 1%, 0.1W 0603 3.3K, 1%, 0.1W 0603 4.7K, 1%, 0.1W 0603 2A, 25V Figure 12. Efficiency vs. Output Current ...
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... Figure 13. PCB layout (component side) Figure 14. PCB layout (bottom side) Figure 15. PCB layout (front side) 42mm 34mm L5970D 7/10 ...
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... C4 SYNC VREF GND INH 22nF R3 4.7k 3.3V OUT STPS2L25U L5970 GND INH 3.3V OUT VCC VCC 8 1 L5970D COMP COMP INH SYNC VREF GND D2 VOUT1=5V 1N4148 30mA N1/N2=2 Lp=22uH VOUT=3.3V 0. 100uF 47uF 10V 10V L1 33uH D1 STPS2L25U VOUT=-12V/0 ...
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... D and F do not include mold flash or protrusions. Mold flash or potrusions shall not exceed 0.15mm (.006inch). inch MIN. TYP. MAX. 0.069 0.010 0.065 0.033 0.019 0.010 0.020 0.197 0.244 0.050 0.150 0.15 0.157 0.050 0.024 OUTLINE AND MECHANICAL DATA SO8 L5970D 9/10 ...
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... L5970D Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice ...