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TPS54291PWPRTI ?N/a40avai4.5V to 18V Input, 1.5/2.5A Dual Synchronous Step-Down Converter 16-HTSSOP -40 to 145


TPS54291PWPR ,4.5V to 18V Input, 1.5/2.5A Dual Synchronous Step-Down Converter 16-HTSSOP -40 to 145Features 3 DescriptionThe TPS54290, TPS54291, and TPS54292 devices1• 4.5-V to 18-V Input Rangeare d ..
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TPS54291PWPR
4.5V to 18V Input, 1.5/2.5A Dual Synchronous Step-Down SWIFT?Converter
BOOT2
PGND2
BOOT1
SW1
PGND1
TPS54290
EN1
VINOUT2
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TPS54290, TPS54291, TPS54292

SLUS973A–OCTOBER 2009–REVISED NOVEMBER 2016
TPS5429x 1.5-A and 2.5-A Dual, Fully-Synchronous
Buck Converter With Integrated MOSFET Features
4.5-Vto 18-V Input Range Output Voltage Range 0.8Vto DMAX× VIN Fully Integrated Dual Buck: 1.5A and 2.5A Three Fixed Switching Frequency Versions: TPS54290: 300 kHz TPS54291: 600 kHz TPS54292: 1.2 MHz Integrated UVLO 0.8 VREF With 1% Accuracy (0°Cto 85°C) Internal Soft Start: TPS54290: 5.2 ms TPS54291: 2.6 ms TPS54292: 1.3 ms Dual PWM Outputs 180° Out-of-Phase Dedicated Enablefor Each Channel Current Mode Control for Simplified
Compensation External Compensation Pulse-by-Pulse Overcurrent Protection,
2.2-A and 3.8-A Overcurrent Limit Integrated Bootstrap Switch Thermal Shutdown Protectionat 145°C 16-Pin PowerPAD™ HTSSOP Package Applications Set-Top Boxes Digital TVs Powerfor DSP Consumer Electronics Description
The TPS54290, TPS54291, and TPS54292 devices
are dual-output, fully synchronous buck converters
capableof supporting applications witha minimal
numberof external components.It operates from
4.5-V to 18-V input supply voltage, and supports
output voltagesas lowas 0.8V andas highas 90% the input voltage.
Both high-side and low-side MOSFETs are integrated provide fully synchronous conversion with higher
efficiency. Channel1 can provide up to 1.5A
continuous current. Meanwhile, Channel2 supportsto 2.5A.
Current mode control simplifies the compensation.
The external compensation adds flexibility for
userto choose different typeof output capacitors.
180° out-of-phase operation reduces the ripple
current through the input capacitor, providing
benefitof reducing input capacitance, alleviating EMI
and increasing capacitor life.
Device Information(1)

(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Simplified Schematic
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