Product overview
Description
The STEVAL-ISA078V1 demonstration board is a high efficiency monolithic synchronous step-down regulator capable of delivering up to 800 mA of continuous output current and of regulating the output voltage from 0.6 V up to VINthanks to the 100% duty cycle operation capability.
The input voltage ranges from 2 V to 5.5 V.
The control loop architecture is based on a constant frequency peak current mode, while high efficiency at light loads is achieved by a low consumption functionality.
The very low quiescent current (25 μA) and shutdown current (0.2 μA) means that the device is very suitable for supplying battery-powered equipment like PDAs, hand-held terminals, DSCs (digital still cameras) and cellular phones.
The switching frequency is internally set at 600 kHz, but the device can be externally synchronized up to 1.4 MHz. An internal reference voltage of 0.6 V (typ.) allows the device to regulate a minimum output voltage of the same low value.
The low MOSFET RDS(on)ensures high efficiency at high output current.
Additional beneficial features are: hysteretic UVLO, OVP, constant current short-circuit protection, Power Good and thermal shutdown.
The MSOP8 package allows significant space savings on the board.
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All features
- 2 V to 5.5 V battery input range
- High efficiency: up to 95%
- Extremely low quiescent current
- 1 μA max. shutdown supply current
- 800 mA max. output current
- Adjustable output voltage from 0.6 V
- Low dropout operation: up to 100% duty cycle
- ± 1% output voltage accuracy
- 600 MHz switching frequency externally synchronizable up to 1.4 MHz
- Short-circuit protection
- RoHS compliant
All resources
Resource title | Version | Latest update |
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Board Manufacturing Specifications (1)
Resource title | Version | Latest update | ||
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ZIP | 2.1 | 01 Aug 2015 | 01 Aug 2015 |
Bill of Materials (1)
Resource title | Version | Latest update | ||
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1.0 | 01 Aug 2015 | 01 Aug 2015 |
Schematic Pack (1)
Resource title | Version | Latest update | ||
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1.0 | 01 Aug 2015 | 01 Aug 2015 |
Quality and Reliability
Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | WEEE Compliant | Material Declaration** |
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STEVAL-ISA078V1 | NRND | CARD | Industrial | Ecopack2 | - | |
STEVAL-ISA078V1
Package:
CARDMaterial Declaration**:
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Supplier | Core Product | Board production status | |
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STEVAL-ISA078V1 | | | distributors No availability of distributors reported, please contact our sales office |
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STEVAL-ISA078V1 NRND
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors