L5970D STMicroelectronics, L5970D Datasheet
L5970D
Specifications of L5970D
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L5970D Summary of contents
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... CERAMIC 220pF October 2007 step down switching regulator 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 250mΩ) as switching element to minimize the size of the external components ...
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... Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6 Application ideas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 8 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2/16 L5970D ...
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... L5970D 1 Pin settings 1.1 Pin connection Figure 2. Pin connection (top view) 1.2 Pin description Table 1. Pin description N° Type 1 OUT 2 SYNC 3 INH 4 COMP VREF 7 GND 8 VCC OUT 1 8 SYNC 2 7 INH 3 6 COMP 4 5 D98IN955 Regulator output. Master/slave synchronization. A logical signal (active high) disables the device. If INH not used the pin must be grounded ...
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... TOT T Operating junction temperature range J T Storage temperature range STG 2.2 Thermal data Table 3. Thermal data Symbol R Maximum thermal resistance junction-ambient thJA 1. Package mounted on board 4/16 Parameter ≤ 60°C A Parameter L5970D Value Unit int. limit -0. -0 0.75 W -40 to 150 °C -55 to 150 ° ...
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... L5970D 3 Electrical characteristics Table 4. Electrical characteristics ( T = 25° 12V, unless otherwise specified Symbol Operating input V CC voltage range Mosfet on R DS(on) Resistance Maximum limiting I l current f Switching frequency s Duty cycle Dynamic characteristics (see test circuit ). V Voltage feedback 5 h Efficiency DC characteristics Total operating ...
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... I = 3mA source no load 1.65V sync 5mA REF V = 4.4V to 36V 0mA REF V = 4.4V to 36V 5mA REF from -40 to 125°C. Specification over the -40 to +125 T J L5970D Min Typ Max Unit 1 1.5 mA µA 2 2 REF 0.74 V 0.11 0.25 mA 0.21 ...
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... L5970D 4 Typical characteristics Figure 3. Junction temperature vs output current Tj(°C) 130 120 110 100 Vcc=5V 90 Tamb=25° 0.2 0.4 0.6 Figure 5. Junction temperature vs output current Tj(°C) 130 120 110 100 Vcc=12V 90 Tamb=25° 0.2 0.4 0.6 Figure 7. Junction temperature vs output current Tj(°C) ...
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... Figure 12. Efficiency vs output current 50 100 150 Tj (°C) Vo=2.5V 0.4 0.5 0.6 0.7 0.8 0 (A) junction temperature 260 250 240 Vcc = 12V 230 Vo = 3.3V 220 - 100 Tj ( Vo=3. Vo=2. Vo=1. Vcc= 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Io (A) L5970D 150 0.8 0.9 1 ...
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... Figure 14. Demo board application circuit VIN = 4.4V to 25V C1 10µF 25V CERAMIC Table 5. Component list Reference VREF 3.3V 6 VCC 8 L5970D SYNC. 2 COMP INH. GND 22nF C3 R3 220pF 4.7K Part number GRM32DR61E106KA12L 10µF, 25V POSCAP 10TPB100M 100µF, 10V C1206C221J5GAC 220pF, 5%, 50V ...
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... Application circuit Figure 15. PCB layout (component side) Figure 16. PCB layout (bottom side) Figure 17. PCB layout (front side) 10/16 L5970D ...
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... N1/N2=2 Lp=22uH VOUT=3.3V D1 0.5A STPS25L25U C4 100uF 10V L1 33uH OUT 1 D1 STPS2L25U VOUT=-12V/0.3A 2. INH 100uF 24k 16V L1 D2 33uH STPS2L25U VOUT=12V/0.3A 24k C4 M1 100uF STN4NE03L 16V 2.7k OUT VCC 8 1 L5970D COMP SYNC VREF GND INH C5 47uF 10V 11/16 ...
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... These packages have a Lead-free second level interconnect . The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK trademark. ECOPACK specifications are available at: 12/16 www.st.com L5970D ...
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... L5970D Table 6. SO-8 mechanical data Dim ( ddd 1. Dimensions D does not include mold flash, protru-sions or gate burrs. Mold flash, potrusions or gate burrs shall not exceed 0.15mm (.006inch) in total (both side). Figure 22. Package dimensions mm. Min Typ Max 1.35 1.75 0.10 0.25 1.10 1.65 ...
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... Order codes 8 Order codes Table 7. Order codes Part number L5970D L5970D013TR 14/16 Package Packaging SO8 SO8 Tape and reel L5970D Tube ...
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... L5970D 9 Revision history Table 8. Revision history Date 26-Jan-2007 16-Mar-2007 16-Oct-2007 Revision 14 Updated Table 5 on page 9 15 Mechanical data typo 16 Updated Section 5: Application circuit on page 9 Revision history Changes 15/16 ...
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... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 16/16 Please Read Carefully: © 2007 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com L5970D ...