TPS65530A Datasheet, PDF (1/32 Pages) Texas Instruments – FULLY INTEGRATED 8-CHANNEL DC/DC CONVERTER FOR DIGITAL STILL CAMERAS

TPS65530A
www.ti.com............................................................................................................................................................ SLVS835C – APRIL 2008 – REVISED APRIL 2009
FULLY INTEGRATED 8-CHANNEL DC/DC CONVERTER FOR DIGITAL STILL CAMERAS
FEATURES
1
•2 8-Channel DC/DC Converter and
Low Dropout (LDO)
• Integrated Power MOSFET Switch Except CH8
– Boost (CH5/7)
– Buck (CH1/3)
– Buck-Boost (CH2/4)
– Invert (CH6)
• Low-Power Suspend Mode (Sleep Mode)
• Power ON/OFF Sequence (CH1/2/3 and CH5/6)
• LED-Back Light Brightness Control (CH7)
• Fixed Switching Frequency (CH1–4: 1.5 MHz,
CH5–8: 750 kHz)
• Fixed Max Duty Cycle Internally
• Soft Start
• Undervoltage Lockout (UVLO)
• Protection
– Thermal Shutdown (TSD)
– Overvoltage Protection (OVP)
– Overcurrent Protection (OCP) Except CH8
• Supply Voltage Range: 1.5 V to 5.5 V
• Operating Temperature Range: –25°C to 85°C
• 6 × 6 mm, 0.4-mm Pitch, 48-Pin QFN Package
APPLICATIONS
• Digital Still Cameras (DSCs)
• Portable Electronics Equipment
DESCRIPTION/
ORDERING INFORMATION
The TPS65530A is a fully integrated 8-channel
switching dc/dc converter, and seven channels have
integrated power FET.
CH2/4 are configured for H bridge for buck-boost
topology and single inductor supports. These
channels achieve higher efficiency in spite of
input/output voltage conditions.
CH7 has a brightness control and drives white LED
by constant current. Also, CH7 supports overvoltage
protection (OVP) for open load.
CH1/2/3 have a power ON/OFF sequence suitable for
a digital still camera (DSC) system. CH5/6 have a
power ON/OFF sequence, depending on the CCD.
Power ON/OFF for CCD block (CH5/6) is selectable
by the input voltage level at the SEQ56 pin. CH4 and
CH7 have individual ON/OFF sequences.
The TPS65530A high switching frequency is
achieved by an integrated power MOSFET switch. It
reduces external parts dynamically. Shutdown current
consumption is less than 1 µA as a typical value.
T_A
–25°C to 85°C
QFN
ORDERING INFORMATION
PACKAGE ^{(1) (2)}
ORDERABLE PART NUMBER
Reel of 250
TPS65530ARSLT
Reel of 2500
TPS65530ARSLR
TOP-SIDE MARKING
TPS65530A
(1) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
(2) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
1
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.
PowerPAD is a trademark of Texas Instruments.
2
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.
Copyright © 2008–2009, Texas Instruments Incorporated