TPS657052_1 Datasheet, PDF (1/24 Pages) Texas Instruments – PMU for Embedded Camera Module

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PMU for Embedded Camera Module
Check for Samples: TPS657052, TPS657051
TPS657052
TPS657051
SLVSA08 – FEBRUARY 2010
FEATURES
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• Two 400mA Step-Down Converters
• Up to 92% Efficiency
• V_IN Range for DCDC Converter From 3.3V to 6V
• 2.25 MHz 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
• 1 General Purpose 200mA LDO
• V_IN Range for LDO From 1.7V to 6.0V
• Available in a 16 Ball WCSP With 0.5mm Pitch
APPLICATIONS
• Digital Cameras
• Portable Media Players
• Handheld Equipment
10 mF
VCC
VIN1
MODE
EN1
PGND
VIN2
EN2
PGND
TPS 657051/52
DCDC1
400 mA
2.2 μH
L1
FB1
CLK0°
2.25 MHz
Oscillator
CLK180°
DCDC2
400 mA
2.2 μH
L2
FB2
10uF
10 mF
Vout1
Vout2
DESCRIPTION
TPS657051/52 are small power management units
targeted for embedded camera module or other
portable low power consumer end equipments. It
contains two high efficient step down converters, a
low dropout linear regulator and additional supporting
functions. 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 sized solution.
TPS657051/52 provides an output current of up to
400mA on both DCDC converters and integrates one
200mA LDO with different output settings. The LDO
operates with an input voltage range between 1.7V
and 6.0V allowing it to be supplied from the output of
the step-down converter or directly from the system
voltage.
The TPS657051/52 comes in a small 16-ball wafer
chip scale package (WCSP) with 0.5mm ball pitch.
VINLDO
ENLDO
AGND
LDO
200 mA
VLDO
Vout3
2.2 mF
Figure 1. Application Circuit
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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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