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UCD7242TIN/a32avaiDigital Dual Synchronous Buck Power Driver
UCD7242RSJRTIN/a8avaiDigital Dual Synchronous Buck Power Driver 32-VQFN-HR -40 to 125
UCD7242RSJTTEXASN/a16303avaiDigital Dual Synchronous Buck Power Driver 32-VQFN-HR -40 to 125


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UCD7242-UCD7242RSJR-UCD7242RSJT
Digital Dual Synchronous Buck Power Driver
BP3GND MON VIN
PWM-B
SRE-B
FLT-B DISGG -BMON
BST-B
BSW-B
SW-B
PGND
PWM-A
SRE-A
FLT-A -AMON
BST-A
BSW-A
SW-A
PGNDGG
UCD7242
www.ti.com
SLUS962B –JANUARY 2010–REVISED AUGUST 2012
Digital Dual Synchronous-Buck Power Driver
Checkfor Samples: UCD7242
1FEATURES APPLICATIONS Fully Integrated Power Switches With Drivers • Digitally-Controlled Synchronous-Buck Power
for Dual Synchronous Buck Converters Stages Full Compatibility WithTI Fusion Digital Power • High Current Dual-Phase VRM/EVRD
Supply Controllers, Such as the UCD92xx Regulators for Desktop, Server, Telecom and
Family Notebook Processors Wide Input Voltage Range: 4.75Vto 18V
Operational Downto 2.2V Input With an
External Bias Supply Upto 10A Output Current per Channel Operationalto2 MHz Switching Frequency High Side Current Limit With Current Limit
Flag Onboard Regulated6V Driver Supply From VIN Thermal Protection Temperature Sense Output– Voltage
Proportionalto Chip Temperature UVLO and OVLO Circuits Ensure Proper Drive
Voltage Rated From –40°Cto 125°C Junction
Temperature RoHS Compliant Accurate On-Die Current Sensing (±5%)
system readyto drive two independent buck power supplies (see Figure 1). side MOSFETs, drivers, current sensing circuitry and necessary protection functionsto facilitate efficiency. Driver circuits the high-side low-side NMOS synchronous gates are drivento +6.25V byan internally regulated VGG be disabledto permit the userto gate drive conversion input voltage rangeof 2.2V
lockout (UVLO) logic before allowing chip operation. pin controls whetheror not the low-side MOSFETis turned on when high the part operatesin continuous conduction for PWM signalto control both the high-side gate cross conduction. When low, mode the low-side MOSFETis always held off.
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