Synchronous Step-Down Converter


The SP6652 is a high efficiency, synchronous buck regulator ideal for portable applications using one Li-ion cell, with up to 1A of output current. The 1.4MHz switching frequency and PWM control loop are optimized for a small value inductor and ceramic output capacitor for space constrained portable designs. The input voltage range of 2.7V to 5.5V, excellent transient response, output accuracy and ability to transition into 100% duty cycle operation extending the battery life makes the SP6652 a superior choice for a wide range of portable power applications. A logic level shutdown control, external clock synchronization and forced-PWM or automatic control inputs are provided. Other features include soft-start, overcurrent protection and 140°C over temperature shutdown.

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  • 1A output current
  • 1.4MHz constant frequency operation
  • 97% efficiency possible
  • 0.5µA (maximum) shutdown current
  • Adjustable output down to 0.75V
  • No external FETs or Schottky diode required
  • Uses small value inductors and ceramic output capacitors
  • Low dropout operation: 100% duty cycle
  • Soft-start and thermal shutdown protection
  • Easy frequency synchonization
  • Small (3mm x 3mm) 10-pin DFN or MSOP package


Design Tools

Reference Designs


Pkg Code Details Quantities Dimensions PDF
  • JEDEC Reference: n/a
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 81.2ºC/W
  • Bulk Pack Style: Canister
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 3000
  • Quantity per Tube: n/a
  • 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: 2.5
  • Width: 2.4
  • Thickness: 0.9
  • Lead Pitch: 0.5
  • JEDEC Reference: MO-187
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 214.0ºC/W
  • Bulk Pack Style: Tube
  • Quantity per Bulk Pack:
  • Quantity per Reel: 2500
  • Quantity per Tube: 50
  • 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: 3
  • Width: 3
  • Thickness: 0.85
  • Lead Pitch: 0.50
DFN10 3x3 OPT1
  • JEDEC Reference:
  • MSL Pb-Free:
  • MSL SnPb Eutectic:
  • ThetaJA:
  • Bulk Pack Style:
  • Quantity per Bulk Pack:
  • Quantity per Reel:
  • Quantity per Tube:
  • Quantity per Tray:
  • Reel Size (Dia. x Width x Pitch):
  • Tape & Reel Unit Orientation:
  • Dimensions: mm
  • Length: 3
  • Width: 3
  • Thickness: 0.9
  • Lead Pitch:

Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
SP6652ER DFN10 -40 85 OBS
SP6652ER/TR DFN10 -40 85 OBS
SP6652ER-L DFN10 COL -40 85 OBS Suggested:
SP6652ER-L/TR DFN10 3x3 OPT1 -40 85 EOL Suggested:
SP6652EU MSOP10 -40 85 OBS
SP6652EU/TR MSOP10 0 70 OBS
SP6652EU-ES MSOP10 -40 85 OBS
SP6652EU-L MSOP10 -40 85 OBS Suggested:
SP6652EU-L/TR MSOP10 -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
07/11/2017 Product Discontinuation Notification PDN_17-0623-01-1033.pdf
01/27/2017 Qualification of alternate assembly subcon, ANST, China. PCN 16-1145-04-01 ANST-1033.pdf
07/26/2016 Product discontinuation notification. Discontinued. PDN 16-0626-01-1033.pdf
10/04/2013 Addition of an alternate qualified assembly site, UTAC Thailand, for assembly using copper or gold wire bonding. Material change and alternate assembly site. PCN_13-0522-04-1033.pdf
08/29/2011 Material change: Mold compound and die attach material are changed and the listed parts will be fully Green (halogen-free). Migrating to green environment and material standardization. PCN_11-0810-01-1033.pdf
02/28/2007 Product Obsolescence Letter and Discontinuation Notification. Discontinued. POL_022807-1033.pdf