TPS65708_15 Datasheet, PDF (1/26 Pages) Texas Instruments – PMU for Embedded Camera Module

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TPS65708
SLVSAE1B – OCTOBER 2010 – REVISED SEPTEMBER 2015
TPS65708 PMU for Embedded Camera Module
1 Features
•1 Two 400-mA Step-Down Converters
• Up to 95% Efficiency
• V_IN Range for DC-DC Converters From
3.6 V to 6 V
• 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
• 2 General Purpose 200-mA LDOs
• LDOs Optionally Powered From Step-Down
Converters
• 7.5-mA PWM Dimmable Current Sink
• Available in a 16-Ball DSBGA (WCSP) With
0.5-mm Pitch
• Device Options:
– VDCDC1 = 3.3 V
– VDCDC2 = 1.8 V
– VLDO1 = 2.8 V
– VLDO2 = 1.2 V
– ISINK(PWM=1) = 7.5 mA
– SEQUENCING : DCDC1, LDO1, DCDC2,
LDO2
2 Applications
• Monitors
• Laptops
• Handheld Equipment
3 Description
The TPS65708 device is a power management unit
targeted for embedded camera modules or other
portable low-power consumer end equipment. The
device contains two high-efficiency step-down
converters, two low-dropout linear regulators, and a
7.5-mA current sink for driving a LED. The 2.25-MHz
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. The
TPS65708 device provides an output current of up to
400 mA on both DC-DC converters and up to 200 mA
on each of the LDOs. The enable signal to the DC-
DC converters and LDOs is generated internally by
the undervoltage lockout circuit.
The TPS65708 comes in a small 16-pin wafer chip-
scale package (WCSP) with 0.5-mm ball pitch.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS65708
DSBGA (16)
2.00 mm × 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
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
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.