ST662AC_10 STMICROELECTRONICS [STMicroelectronics], ST662AC_10 Datasheet

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ST662AC_10

Manufacturer Part Number
ST662AC_10
Description
DC-DC converter from 5 V to 12 V, 0.03 Afor Flash memory programming supply
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
Features
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.
1. Automotive Grade products.
August 2010
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)
Device summary
ST662ABD-TRY
ST662ABD-TR
ST662ACD-TR
Order codes
(1)
DC-DC converter from 5 V to 12 V, 0.03 A
Doc ID 5068 Rev 8
for Flash memory programming supply
SO-8 (tape and reel)
SO-8 (tape and reel)
SO-8 (tape and reel)
Package
SO-8
ST662AB
ST662AC
www.st.com
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ST662AC_10 Summary of contents

Page 1

Features ■ Output voltage ± ■ Supply voltage range: 4 5.5 V ■ Guaranteed output current ■ Very low quiescent current: 100 µA ■ Logic controlled electronic shutdown: 1 µA ...

Page 2

Contents Contents 1 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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

Page 4

Pin configuration 2 Pin configuration Figure 2. Pin connections (top view) Table 2. Pin description Pin n° Symbol 1 C1- Negative terminal for the first charge pump capacitor 2 C1+ Positive terminal for the first charge pump capacitor 3 C2- ...

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 ...

Page 6

Electrical characteristics 4 Electrical characteristics Refer to the test circuits, V specified. Typical value are referred at T Table 5. Electrical characteristics 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 (I ...

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 ...

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 ...

Page 12

Application circuit 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 ...

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, ...

Page 14

How to increase output current or output voltage capability 8 How to increase output current or output voltage capability Current capability is limited by R connecting in parallel two or more ST662A devices; each one of them can supply 30 ...

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 ...

Page 16

Package mechanical data 9 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 ...

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 ...

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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 ...

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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 ...

Page 20

Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any ...

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