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Semtech - High Efficiency 700mA Current-Mode Synchronous Buck DC/DC Regulator

Numéro de référence TS30111
Description High Efficiency 700mA Current-Mode Synchronous Buck DC/DC Regulator
Fabricant Semtech 
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TS30111 fiche technique
TS30111
High Efficiency 700mA Current-Mode
Synchronous Buck DC/DC Regulator, 1MHz
TRIUNE PRODUCTS
Features
• Fixed output voltage choices: 1.5V, 1.8V, 2.5V, 3.3V, and 5V
Adjustable version output voltage range: 0.8V to 5V
• Wide input voltage range 4.5V to 16V (18V Abs Max)
• 1MHz +/- 10% fixed switching frequency
• Continuous output current: 700mA
• High efficiency – up to 90%
• Current mode PWM control with PFM mode for improved
light load efficiency
• Voltage supervisor for VOUT reported at the PG pin
• Input supply under voltage lockout
• Soft start for controlled startup with no overshoot
• Full protection for over-current, over-temperature, and
VOUT over-voltage
• Less than 10uA in standby mode
• Low external component count
Summary Specification
• Junction operating temperature -40 °C to 125 °C
• Packaged in a 16pin QFN (3x3)
Description
The TS30111 is a DC/DC synchronous switching regulator with
fully integrated power switches, internal compensation, and
full fault protection. The switching frequency of 1MHz enables
the use of small filter components resulting in minimal board
space and reduced BOM costs.
The TS30111 utilizes current mode feedback in normal
regulation PWM mode. When the regulator is placed in
standby (EN is low), the device draws less than 10uA quiescent
current.
The TS30111 integrates a wide range of protection circuitry
including input supply under-voltage lockout, output voltage
soft start, current limit, and thermal shutdown.
The TS30111 includes supervisory reporting through the
PG (Power Good) open drain output to interface other
components in the system.
Applications
• On-card switching regulators
• Set-top box, DVD, LCD, LED supply
• Industrial power supplies
Typical Applications
VCC
CBYPASS
EN
Adjustable Output
VCC
BST
VSW
FB
EN
PG
CBST
LOUT
RTOP
RBOT
VOUT
COUT
VOUT
10 kohm
(optional)
PG
VCC
EN
Fixed Output
VCC
BST
VSW
FB
EN
PG
VOUT
VOUT
10 kohm
(optional)
PG
TS30111
Final Datasheet
June 2, 2015
Rev 1.0
www.semtech.com
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