STEVAL-ISA048V2 STMicroelectronics, STEVAL-ISA048V2 Datasheet

BOARD EVAL BASED ON ST8R00W

STEVAL-ISA048V2

Manufacturer Part Number
STEVAL-ISA048V2
Description
BOARD EVAL BASED ON ST8R00W
Manufacturer
STMicroelectronics
Datasheets

Specifications of STEVAL-ISA048V2

Mfg Application Notes
ST8R00 AppNote
Main Purpose
DC/DC, Step Up
Outputs And Type
1, Non-Isolated
Voltage - Output
8V
Current - Output
1A
Voltage - Input
4 ~ 6V
Regulator Topology
Boost
Frequency - Switching
1.2MHz
Board Type
Fully Populated
Utilized Ic / Part
ST8R00W
Product
Power Management Modules
Silicon Manufacturer
ST Micro
Silicon Core Number
ST8R00W
Kit Application Type
Power Management - Voltage Regulator
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
497-6377
Features
Description
The ST8R00 family of low quiescent current,
synchronous PWM step-up DC-DC converters
offer high efficiency even in light load conditions.
The ST8R00 accepts a positive input voltage from
4 to 6V and provides an output voltage in the 6 to
12V range.
The ST8R00 is developed in two versions: Burst
mode and Continuous mode. The Burst mode
version functions in discontinuous mode, allowing
the device to maintain the regulated voltage in no
load conditions by turning off the internal
switches. The Continuous mode version,
Order codes
1. Burst mode at light load
2. Full PWM mode
May 2007
Very low supply current: 500µA (typ)
Output voltage adjustable from 6V to 12V
Output voltage accuracy: ±2%
Output current up to 1A
Low ripple voltage: 5mV (typ)
Synchronous rectification
High 90% efficiency: V
Few external components
Very small DFN8 (4x4mm) package
Part number
ST8R00W
ST8R00
Micropower 1A synchronous step-up DC-DC converter
(1)
(2)
O
= 9V (typ)
ST8R00WPUR
ST8R00PUR
Package
Rev. 1
ST8R00W, guarantees the lowest switching ripple
when the device is used at light load conditions.
The high switching frequency and internally
limited peak inductor current permit the use of
small, low-cost inductors. Only three external
components are required: an inductor and two
ceramic capacitors.
The ST8R00 is suitable for use in equipment
where low noise, low ripple and low supply current
are required. The ST8R00 is available in a very
small DFN8 4x4mm package.
DFN8 4x4mm
Output voltages
ADJ
ADJ
ST8R00
www.st.com
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STEVAL-ISA048V2 Summary of contents

Page 1

Micropower 1A synchronous step-up DC-DC converter Features ■ Very low supply current: 500µA (typ) ■ Output voltage adjustable from 6V to 12V ■ Output voltage accuracy: ±2% ■ Output current ■ Low ripple voltage: 5mV (typ) ■ ...

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Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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Block diagram Figure 1. Schematic diagram Thermal Thermal INH INH Inhibit Inhibit REF REF LX LX PGND PGND PWM Control PWM Control PGND PGND GND GND OUT OUT FB FB 3/19 ...

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Pin configuration Figure 2. Pin connections (top view) Table 1. Pin description Pin n° Symbol PGND 3 GND INH OUT EXP pad GND 4/19 Name and function Switching ...

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Typical application circuit 3 Figure 3. Application circuit =10µF =10µ L=4.7µH L=4.7µ OUT OUT INH INH ST8R00 ST8R00 FB FB GND GND PGND PGND ...

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Maximum ratings Table 2. Absolute maximum ratings Symbol V Output voltage O V Input voltage I V Inhibit voltage INH V LX pin voltage pin output current LX T Storage temperature range STG T Operating junction ...

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Electrical characteristics Table 5. Electrical characteristics for the ST8R00 ( -25°C to 125° Symbol Parameter V Output voltage O V Start-up voltage START-UP V Input voltage range I V Feedback voltage FB V Feedback voltage ...

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Table 6. Electrical characteristics for the ST8R00W ( -25°C to 125° Symbol Parameter V Output voltage O V Start-up voltage START-UP V Input voltage range I V Feedback voltage FB V Feedback voltage FB_OFF I Feedback ...

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Typical characteristics (L = 4.7µ Figure 4. Voltage feedback vs temperature 1.3 1.3 1.28 1.28 1.26 1.26 1.24 1.24 1.22 1.22 1.2 1.2 1.18 1.18 1.16 1.16 1.14 1.14 1.12 1.12 1.1 1.1 -75 ...

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Figure 10. Inhibit voltage vs temperature =4V, V =4V, V from 0 to 2V, I from 0 to 2V, I =50mA =50mA I I INH INH O O 2.5 2 1.5 1 ...

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Figure 16. Internal leakage current vs temperature 0.1 0.1 0.09 0.09 0.08 0.08 0.07 0.07 0.06 0.06 0.05 0.05 0.04 0.04 0.03 0.03 0.02 0. =5V, V =5V, V =2V, V =2V, V =4V, No Inductor ...

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Figure 22. Output voltage vs input voltage (for ST8R00W) 12.00 12.00 125°C 125°C 10.00 10.00 25°C 25°C 8.00 8.00 0°C 0°C -25°C -25°C 6.00 6.00 4.00 4.00 2.00 2. INH INH 0.00 0.00 0 ...

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Figure 28. Load transient V =V =5V, I =from 10mA to 500mA I INH O Figure 30. INH transient V =6, V from 0V to 2V, I =1A I INH O Figure 29. Line transient ...

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Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner ...

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DFN8 (4x4) Mechanical Data mm. Dim. Min. Typ. A 0.80 0. 0.02 A3 0.20 b 0.23 0.30 D 3.90 4.00 D2 2.82 3.00 E 3.90 4.00 E2 2.05 2.20 e 0.80 L 0.40 0.50 inch. Max. Min. Typ. ...

Page 16

Figure 32. DFN8 (4x4) Footprint Recommended Data 16/19 ...

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Tape & Reel QFNxx/DFNxx (4x4) Mechanical Data mm. Dim. Min. Typ 12 4.35 Bo 4. Max. Min. 330 13.2 0.504 0.795 101 3.898 14 inch. Typ. ...

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Revision history Table 7. Revision history Date Revision 23-May-2007 1 18/19 Changes Initial release. ...

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... 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 time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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