ST662AB

Manufacturer Part NumberST662AB
DescriptionDC-DC CONVERTER FROM 5V TO 12V, 0.03A FOR FLASH MEMORY PROGRAMMING SUPPLY
ManufacturerSTMicroelectronics
ST662AB datasheet
 


Specifications of ST662AB

Output Voltage12 V ± 5 %Supply Voltage Range4.5 V to 5.5 V
Very Low Quiescent Current100 μALogic Controlled Electronic Shutdown1 μA
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Features
Output voltage: 12 V ± 5 %
Supply voltage range: 4.5 V to 5.5 V
Guaranteed output current up to 30 mA
Very low quiescent current: 100 µA
Logic controlled electronic shutdown: 1 µA
Just capacitors needed (no inductor)
Description
The ST662A is a regulated charge pump DC-DC
converter. It provides 12 V ± 5 % output voltage to
program byte-wide Flash memory, and can supply
30 mA output current from input as low as 4.75 V.
A logic controlled shut down pin that interfaces
directly with microprocessor reduces the supply
current to only 1 µA. The ST662AB is available as
Automotive Grade in SO-8 package. This device
is qualified according to the specification AEC-
Q100 of the Automotive market, in the
temperature range - 40 °C to 125 °C, and the
statistical tests PAT, SYL, SBL are performed.
Table 1.
Device summary
Order codes
ST662ABD-TR
ST662ABD-TRY
ST662ACD-TR
1. Automotive Grade products.
August 2010
DC-DC converter from 5 V to 12 V, 0.03 A
for Flash memory programming supply
(1)
Doc ID 5068 Rev 8
ST662AB
ST662AC
SO-8
Package
SO-8 (tape and reel)
SO-8 (tape and reel)
SO-8 (tape and reel)
www.st.com
1/20
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ST662AB Summary of contents

  • Page 1

    ... V. A logic controlled shut down pin that interfaces directly with microprocessor reduces the supply current to only 1 µA. The ST662AB is available as Automotive Grade in SO-8 package. This device is qualified according to the specification AEC- Q100 of the Automotive market, in the temperature range - 40 ° ...

  • Page 2

    ... Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7.1 ST662A output performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 8 How to increase output current or output voltage capability . . . . . . . 14 9 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2/20 Doc ID 5068 Rev 8 ST662AB, ST662AC ...

  • Page 3

    ... ST662AB, ST662AC 1 Application circuit Figure 1. Typical application circuit Doc ID 5068 Rev 8 Application circuit 3/20 ...

  • Page 4

    ... Active high C-MOS logic level shutdown input. SHDN is internally pulled SHDN Connect to GND for normal operation. In Shutdown mode the charge pumps are turned off and V 4/20 Name and function = V when in shutdown mode OUT OUT CC Doc ID 5068 Rev 8 ST662AB, ST662AC . CC ...

  • Page 5

    ... ST662AB, ST662AC 3 Maximum ratings Table 3. Absolute maximum ratings Symbol V DC input voltage to GND CC SHDN Shutdown voltage I Output current continuous O P Power dissipation D T Operating ambient temperature range OP T Storage temperature range STG Note: Absolute maximum ratings are those values beyond which damage to the device may occur. ...

  • Page 6

    ... Oscillator frequency O n Power efficiency switch impedance OUT Refer to the test circuits, V specified. Typical value are referred at T Table 6. Electrical characteristics for ST662AB-TRY (Automotive Grade) Symbol Parameter V Output voltage O I Quiescent current Q1 I Shutdown current Q2 I Shutdown pin current ...

  • Page 7

    ... ST662AB, ST662AC 5 Typical performance characteristics Figure 3. Output voltage vs. temperature ( mA) OUT Figure 5. Supply current vs. temperature Figure 7. SHDN pin current vs. temperature Typical performance characteristics Figure 4. Output voltage vs. temperature ( mA) OUT Figure 6. Supply current vs. supply voltage Figure 8. Output voltage vs. shutdown input Doc ID 5068 Rev 8 ...

  • Page 8

    ... Typical performance characteristics Figure 9. Output voltage vs. shutdown input voltage (No load) Figure 11. Test circuit 8/20 Figure 10. Output voltage vs. shutdown input voltage (I Doc ID 5068 Rev 8 ST662AB, ST662AC = 30 mA) OUT ...

  • Page 9

    ... ST662AB, ST662AC 6 Description The ST662 developed to provide regulated output 30 mA from voltage input as low as 4.75 without any inductors useful for a wide range of applications and its performances make it ideal for Flash memory programming supply. An evaluation kit is provided to facilitate the application. This include a single-side demo board designed for surface-mount components ...

  • Page 10

    ... Description Figure 13. Exiting shutdown 200 µA CC OUT 10/20 Figure 14. Entering shutdown 200 µA CC OUT Doc ID 5068 Rev 8 ST662AB, ST662AC ...

  • Page 11

    ... ST662AB, ST662AC 7 Application circuit Based on fast charge/discharge of capacitors, this circuit involves high di/dt values limited only switches. This implies a critical layout design due to the need to minimize ON inductive paths and place capacitors as close as possible to the device. A good layout design is strongly recommended for noise reason. For best performance, use very short connections to the capacitors and the values shown in C3 and C4 must have low ESR in order to minimize the output ripple ...

  • Page 12

    ... Figure 16. Electrical schematic Table 7. List of component Capacitor Charge pump C1 Charge pump C1 Input C3 Output C4 Decoupling C5 7.1 ST662A output performance Figure 17. Output voltage vs. output current 12/20 Type Ceramic Ceramic Electrolytic tantalum Electrolytic tantalum Ceramic Figure 18. Efficiency vs. output current Doc ID 5068 Rev 8 ST662AB, ST662AC Value (µF) 0.22 0.22 4.7 4.7 0.1 ...

  • Page 13

    ... ST662AB, ST662AC Figure 19. Load transient response ( mA) OUT 30mA CC OUT Figure 20. Load transient response ( mA) OUT V = 4.5 to 5.5V OUT Doc ID 5068 Rev 8 Application circuit 13/20 ...

  • Page 14

    ... List of component Capacitor C1A C2A C1B C2B 14/20 of internal switches possible to increase it ON Figure 22. The relevant output current capability is shown in Type Ceramic Ceramic Ceramic Ceramic Electrolytic Tantalum Electrolytic Tantalum Ceramic Doc ID 5068 Rev 8 ST662AB, ST662AC Figure 24 in Value (µF) 0.22 0.22 0.22 0. 0.22 ...

  • Page 15

    ... ST662AB, ST662AC Figure 22. Application circuit for output voltage greater than 12 V Figure 23. Output voltage for application with two device in parallel How to increase output current or output voltage capability Figure 24. Output voltage for application with output voltage greater than 12 V Doc ID 5068 Rev 8 ...

  • Page 16

    ... Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ® ECOPACK trademark. 16/20 Doc ID 5068 Rev 8 ST662AB, ST662AC ® ...

  • Page 17

    ... ST662AB, ST662AC Dim. Min. A 1.35 A1 0.10 A2 1.10 B 0.33 C 0.19 D 4. 5.80 h 0.25 L 0.40 k ddd SO-8 mechanical data mm. Typ. Max. 1.75 0.25 1.65 0.51 0.25 5.00 4.00 1.27 6.20 0.50 1.27 8° (max.) 0.1 Doc ID 5068 Rev 8 Package mechanical data inch. Min. Typ. 0.053 0.04 0.043 0.013 0.007 0.189 0.150 0.050 0.228 0.010 0.016 0016023/C Max. 0.069 0.010 0.065 ...

  • Page 18

    ... Package mechanical data Dim. Min 12 8.1 Bo 5.5 Ko 2.1 Po 3.9 P 7.9 18/20 Tape & reel SO-8 mechanical data mm. Typ. Max. 330 13.2 22.4 8.5 5.9 2.3 4.1 8.1 Doc ID 5068 Rev 8 ST662AB, ST662AC inch. Min. Typ. 12.992 0.504 0.795 2.362 0.319 0.216 0.082 0.153 0.311 Max. 0.519 0.882 0.335 0.232 0.090 0.161 0.319 ...

  • Page 19

    ... ST662AB, ST662AC 10 Revision history Table 9. Document revision history Date Revision 16-Jul-2007 5 07-Feb-2008 6 19-Feb-2008 7 03-Aug-2010 8 Device summary updated. Modified: Table 1 on page 1. Add new order code for Automotive grade products see Modified Features on page 1. Doc ID 5068 Rev 8 Revision history Changes Table 1 on page 1 ...

  • Page 20

    ... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 20/20 Please Read Carefully: © 2010 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Doc ID 5068 Rev 8 ST662AB, ST662AC ...