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Si9168

Features: ` Voltage Mode Control` 5-V to 10-V Input Voltage Range for VDD` 5-V to 12.6-V Input Voltage Range for VS Boost` Programmable PWM/PSM Control Up to 2-MHz Switching Frequency in PWM Synchronous Rectification in PWM Less than 350-A IDD in PSM` Very High Efficiencies In Buck or Boost Modes...

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SeekIC No. : 004490914 Detail

Si9168: Features: ` Voltage Mode Control` 5-V to 10-V Input Voltage Range for VDD` 5-V to 12.6-V Input Voltage Range for VS Boost` Programmable PWM/PSM Control Up to 2-MHz Switching Frequency in PWM Synchr...

Si9168 Data Sheet

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Part Number:
Si9168
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/12/25

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Product Details

Description



Features:

` Voltage Mode Control
` 5-V to 10-V Input Voltage Range for VDD
` 5-V to 12.6-V Input Voltage Range for VS Boost
` Programmable PWM/PSM Control
Up to 2-MHz Switching Frequency in PWM
Synchronous Rectification in PWM
Less than 350-A IDD in PSM
` Very High Efficiencies In Buck or Boost Modes
` Low Dropout Operation at 100% Duty Cycle In Buck
Mode
` Integrated UVLO and POR
` Integrated Soft-Start
` Synchronization
` Logic Controlled Micropower Shutdown Current <2 A
` Fast Line and Load Transient Response
` Available in 16-Lead TSSOP Package




Application

` Cellular Telephones
` Wireless Modems
` Portable Instruments
` Notebook and Palmtop Computers
` PDA's
` Battery Operated Devices




Pinout

Connection Diagram




Specifications

Voltages Referenced to AGND
VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.2 V
VSSVDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 V
PWM/PSM, SYNC, SD, VREF, ROSC, COMP, FB, Mode
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to VDD + 0.3 V
VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.3 V to VS + 0.3 V
PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.3V
Voltages Referenced to PGND
VS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.2 V
DH, DL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to VS + 0.3 V
Peak Output Current (DH, DL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 A
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65 to 150
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Power Dissipation (Package)a
16-Pin TSSOP (Q Suffix)b . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 925 mW
Thermal Impedance (JA)
16-Pin TSSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135/W
Notes
a. Device mounted with all leads soldered or welded to PC board.
b. Derate 7.4 mW/ above 25.




Description

The Si9168 is a synchronous buck or boost controller for 2-cell Li+ battery operated portable communication devices. Designed for use with external high-frequency MOSFETs, the Si9168 is ideal for providing power to various power amplifiers such as TDMA, CDMA, GSM, or PCS. For ultra-high efficiency, converters are designed to operate in synchronous rectified PWM mode under full load, while transforming into externally controlled pulse skipping mode (PSM) under light load conditions. All these features are provided by Si9168 without sacrificing system integration requirements of fitting these circuits into ever demanding smaller space. The Si9168 is capable of switching up to 2 MHz to minimize the size of the output inductor and capacitor, in order to decrease the overall converter footprint. The programmability to design a buck or boost converter with this IC makes it convenient to power either the high voltage (7.2-V) or low voltage (4-V) PAs.

The Si9168 is available in TSSOP-16 pin package and specified to operate over the industrial temperature range of 25 to 85.






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