ST5R33DEMOBOARD STMicroelectronics, ST5R33DEMOBOARD Datasheet
ST5R33DEMOBOARD
Specifications of ST5R33DEMOBOARD
Available stocks
Related parts for ST5R33DEMOBOARD
ST5R33DEMOBOARD Summary of contents
Page 1
MICROPOWER VFM STEP-UP DC/DC CONVERTER VERY LOW SUPPLY CURRENT I REGULATED OUTPUT VOLTAGE I WIDE RANGE OF OUTPUT VOLTAGE I AVAILABLE (2.5V, 2.8V, 3.0V, 3.3V, 5.0V) OUTPUT VOLTAGE ACCURACY ±5% I OUTPUT CURRENT UP TO 100mA I LOW RIPPLE AND ...
Page 2
ST5R00 SERIES Table 1: Absolute Maximum Ratings Symbol V Output Voltage OUT V Input Voltage Pin Voltage Pin Output Current LX P Power Dissipation at 25°C TOT T Storage Temperature Range STG T Operating ...
Page 3
OPERATION The ST5Rxx architecture is built around a VFM CONTROL logic core: switching frequency is set through a built in oscillator: T time is fixed (Typ. 5ms) while T ON output, a logic signal coming from the comparison made by ...
Page 4
ST5R00 SERIES Figure 5: Typical Demoboard Note: drawing not in scale. Table 4: Electrical Characteristics For ST5R25 (V = 1.5V 10mA 25°C, unless otherwise specified. For external components value, unless IN OUT A otherwise notes, refer ...
Page 5
Table 6: Electrical Characteristics For ST5R30 (V = 1.8V 10mA 25°C, unless otherwise specified. For external components value, unless IN OUT A otherwise notes, refer to the typical operating circuit.) Symbol Parameter V Output Voltage OUT ...
Page 6
ST5R00 SERIES TYPICAL PERFORMANCE CHARACTERISTICS (the following plots are referred to the typical application circuit and, unless otherwise noted Figure 6: Output Voltage vs Output Current Figure 7: Output Voltage vs Output Current Figure 8: Output Voltage vs ...
Page 7
Figure 12: Efficiency vs Output Current Figure 13: Efficiency vs Output Current Figure 14: Maximum Oscillator Frequency vs Temperature Figure 15: Maximum Oscillator Frequency vs Temperature Figure 16: Oscillator Duty Cycle (@ MAX Freq.) vs Temperature Figure 17: Oscillator Duty ...
Page 8
ST5R00 SERIES Figure 18: LX Switching Current Limit vs Temperature Figure 19: LX Switching Current Limit vs Temperature Figure 20: Start-up Voltage (V Temperature 8/15 Figure 21: Start-up Voltage (V Temperature Figure 22: Start-up Voltage (V Output Current - V ...
Page 9
Figure 24: Minimum Input Voltage vs Output Current Figure 25: Minimum Input Voltage vs Output Current Figure 26: Internal Switch R DSON Temperature Figure 27: Internal Switch R Temperature Figure 28: Hold-on Voltage vs Temperature vs Figure 29: Hold-on Voltage ...
Page 10
ST5R00 SERIES Figure 30: No Load Input Current vs Temperature APPLICATION INFORMATION PC LAYOUT AND GROUNDING HINTS The ST5R00 high frequency operation makes PC layout important for minimizing ground bounce and noise. Place external components as close as possible to ...
Page 11
DIODE SELECTION A Schottky diode with an high switching speed and a very low Forward Voltage (V may cause lost power as heat in the diode, with a decrease of the Efficiency. Moreover, since the Output Voltage pin is also ...
Page 12
ST5R00 SERIES DIM. MIN. A 0.90 A1 0.00 A2 0.90 b 0.35 C 0.09 D 2. 2.60 L 0.10 12/15 SOT23-5L MECHANICAL DATA mm. TYP MAX. 1.45 0.10 1.30 0.50 0.20 3.00 1.75 0.95 3.00 0.60 ...
Page 13
Tape & Reel SOT23-xL MECHANICAL DATA mm. DIM. MIN. TYP A C 12.8 13 3.13 3.23 Bo 3.07 3.17 Ko 1.27 1.37 Po 3.9 P 3.9 MAX. MIN. 180 13.2 0.504 0.795 2.362 14.4 ...
Page 14
ST5R00 SERIES Table 9: Revision History Date Revision 14-Jun-2005 6 14/15 Description of Changes The SOT-89 package has been removed, mistake on Fig ==> LX, on Tables Output Noise Voltage ==> Efficiency. ...
Page 15
... 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. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics ...