SP6123

8-Pin Synchronous Buck Step-Down Controller

Description

The SP6123 is a fixed frequency, voltage mode, synchronous PWM controller designed to work from a single 5V or 3.3V input supply, providing excellent AC and DC regulation for high efficiency power conversion. Requiring only few external components, the SP6123 packaged in an 8-pin NSOIC, is especially suited for low voltage applications where cost, small size and high efficiency are critical. The operating frequency is internally set to 300kHz (SP6123) or 500kHz (SP6123A), allowing small inductor values and minimizing PC board space. The SP6123 drives an all N-channel synchronous power MOSFET stage for improved efficiency and includes an accurate 0.8V reference for low output voltage applications.

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Features

  • Optimized for single supply, 3V to 5.5V applications
  • High efficiency: greater than 95% possible
  • Accurate fixed 300kHz (SP6123) or 500kHz (SP6123A) frequency operation
  • Fast transient response
  • Internal soft-start circuit
  • Accurate 0.8V reference allows low output voltages
  • Resistor programmable output voltage
  • Loss-less current limit with high side RDS(ON) sensing
  • Hiccup mode current limit protection
  • Dual N-channel MOSFET synchronous driver
  • Quiescent current: 500µA, 30µA in shutdown
  • 8-Pin surface mount package
  • Frequency for SP6123A is 500kHz

Application

Design Tools

Simulation Models
Reference Designs

Packaging

Pkg Code Details Quantities Dimensions PDF
NSOIC8
  • JEDEC Reference: MS-012
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 128.4ºC/W (std); 96.8ºC/W (fused)
  • Bulk Pack Style: Tube
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 2500
  • Quantity per Tube: 98
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 330 x 12 x 8
  • Tape & Reel Unit Orientation: Pin 1 at sprocket hole.
  • Dimensions: mm
  • Length: 4.90
  • Width: 3.90
  • Thickness: 1.65 max
  • Lead Pitch: 1.27

Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
SP6123ACN NSOIC8 0 70 OBS
SP6123ACN/TR NSOIC8 0 70 OBS
SP6123ACN-L NSOIC8 0 70 OBS
SP6123ACN-L/TR NSOIC8 0 70 Active
SP6123ACY 0 70 OBS
SP6123AEN NSOIC8 0 70 OBS
SP6123AEN/TR NSOIC8 0 70 OBS
SP6123AEN-L NSOIC8 -40 85 OBS
SP6123AEN-L/TR NSOIC8 0 70 OBS
SP6123AEY 0 70 OBS
SP6123CN NSOIC8 0 70 OBS
SP6123CN/TR NSOIC8 0 70 OBS
SP6123CN-L NSOIC8 0 70 OBS
SP6123CN-L/TR NSOIC8 0 70 Active
SP6123CY 0 70 OBS
SP6123CY/TR 0 70 OBS
SP6123EN NSOIC8 -40 85 OBS
SP6123EN/TR NSOIC8 -40 85 OBS
SP6123EN-L NSOIC8 -40 85 OBS
SP6123EN-L/TR NSOIC8 -40 85 OBS
SP6123EY 0 70 OBS
SP6123EY/TR 0 70 OBS
SP6123EB Board -40 85 Active
Show obsolete parts
Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
Distribution Date Description File
02/23/2017 Qualification of alternate assembly subcon, ANST, China. PCN 16-1149-02-01 ANST-1033.pdf
02/15/2017 Qualification of alternate assembly subcon, ANST. PCN 16-1149-02 ANST-1033.pdf
07/26/2016 Product discontinuation notification. Discontinued. PDN 16-0626-01-1033.pdf
04/13/2016 Qualification of alternate assembly subcon, JCET. PCN 16-0207-02 JCET-1033.pdf
07/02/2013 Qualification of an alternate qualified assembly supplier, ASE Chung-Li (Taiwan) for the 8L NSOIC package using copper wire bonding. Material change and alternate assembly supplier qualified. PCN_12-1107-01-1033.pdf
03/23/2010 Alternate qualified assembly supplier Capacity enhancement PCN_10-0311-01-1033.pdf
12/07/2009 Enhancement of NSOIC 8, NSOIC14 and NSOIC16 packages to Green (halogen-free) via Mold Compound & Die Attach Material. Enhance packages to be Green (halogen-free). PCN_09-0911-01-1033.pdf
02/28/2007 Product Obsolescence Letter and Discontinuation Notification. Discontinued. POL_022807-1033.pdf
06/26/2006 Announcing transfer of certain Power Management and Interface Products from Hillview fabrication and facility to wafer foundary Silan. See attached Product List Power Management and Interface products as listed are being transfer to external wafer foundry, due to cessation of operations of the sipex Hillview Fabrication manufacturing site PCN-06-0130-40a-1033.pdf
02/02/2006 Announcing transfer of certain Power Management and Interface Products from Hillview fabrication and facility to wafer foundary Silan. See attached Product List Power Management and Interface products as listed are being transfer to external wafer foundry, due to cessation of operations of the sipex Hillview Fabrication manufacturing site PCN-06-0130-40-1033.pdf