TPS65708 Datasheet, PDF (1/22 Pages) Texas Instruments – PMU for Embedded Camera Module

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TPS65708
SLVSAE1A – OCTOBER 2010 – REVISED FEBRUARY 2011
PMU for Embedded Camera Module
Check for Samples: TPS65708
FEATURES
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• Two 400mA Step-Down Converters
• Up to 95% Efficiency
• V_IN Range for DCDC Converters From
3.6V to 6V
• 2.25MHz Fixed Frequency Operation
• Power Save Mode at Light Load Current
• Output Voltage Accuracy in PWM mode ±1.5%
• 100% Duty Cycle for Lowest Dropout
• 180° Out of Phase Operation
• 2 General Purpose 200mA LDOs
• LDOs Optionally Powered From Step-Down
Converters
• 7.5mA PWM Dimmable Current Sink
• Available in a 16-Ball WCSP with 0.5mm Pitch
APPLICATIONS
• Monitors
• Laptops
• Handheld Equipment
DESCRIPTION
TPS65708 is a power management unit targeted for
embedded camera modules or other portable
low-power consumer end equipment. It contains two
high-efficiency step-down converters, two low-dropout
linear regulators, and a 7.5mA current sink for driving
a LED. The 2.25MHz step-down converter enters a
low-power mode at light load for maximum efficiency
across the widest possible range of load currents. For
low-noise applications, the devices can be forced into
fixed frequency PWM mode using the MODE pin. The
device allows the use of small inductors and
capacitors to achieve a small solution size.
TPS65708 provides an output current of up to 400mA
on both DCDC converters and up to 200mA on each
of the LDOs. The enable signal to the dcdc
converters and LDOs is generated internally by the
undervoltage lockout circuit.
The TPS65708 comes in a small 16-ball wafer
chip-scale package (WCSP) with 0.5mm ball pitch.
APPLICATION CIRCUIT
VCC
VIN1
PGND1
MODE
VIN2
PGND2
VINLDO1
VINLDO2
PWM
TPS65708
DCDC1
400 mA
L1 ^{1.5 mH}
FB1
Vout1
10 mF
DCDC2
400 mA
L2 ^{1.5 mH}
FB2
Vout2
10 mF
LDO1
200 mA
LDO2
200 mA
VLDO1
2.2 mF
VLDO2
2.2 mF
V(USB)
ISINK
Vout3
Vout4
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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