RS53419 REED | Alldatasheet

Document overview

  • Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
  • PDF pages: 8

Technical content

Features

  • Constant-On-Time Control with fast transient response
  • Input Voltage Range: 2.85V to 26V with external bias, or 4.2V to 26V with internal bias
  • Output Voltage Range: 0.5V to 5.5V for RS53419L, 0.6V to 5.5V for RS53419H. 90% max duty cycle
  • 15A continuous output current
  • Excellent load and line regulations with 0.6% voltage accuracy
  • Differential Remote Sensing
  • Mode Selection Between Pulse Skip and CCM at Light Load
  • Programmable soft-start time
  • Programmable Switch Valley Current Limit
  • Adjustable Switching Frequency: 300kHz, 500kHz, 800kHz and 1000kHz
  • Non-latch OCP, UVP, UVLO and OTP. Latch- off OVP
  • 3mm x 4mm 21-Pin QFN Package
  • RoHS compliant and Green

Applications

  • Laptop/desktop computer
  • Industrial applications
  • Networking system
  • Gaming Consoles and Graphic Cards
  • TV Power

Description

The RS53419 is a high-power density, fully integrated synchronous buck converter. It has a wide input voltage range, and can support up to 15A continuous output current at defined conditions. LDO is integrated internally, which is very suitable for single input supply conditions. External bias is optional for maximiz ing efficiency. A d ifferential sensing scheme and an internal feedback reference voltage achieve ±1% tolerance over full temperature range and, in conjunction, they perform an excellent line and load regulation. Switching frequency can be easily adjusted from 300kHz, 500kHz, 800kHz, to 1000kHz. The RS53419 uses Constant-On-Time control scheme with fast transient response. Pure MLCC output capacitors can be used to save space and cost. RS53419 has full protection features including OCP, NOCP, OVP, UVP and over temperature protection (OTP). The RS53419 is available in a 3mm x 4mm 21 -Pin QFN package. Typical Application Circuit FB VOUT CFF COUT RTN SW L REF CSS1 CIN CVCC VIN VCC RPOOD PGOOD RCSRMODE CS MODE EN CBOOT BST CSS2 ON OFF PGND AGND VIN RS53419

Reed Semiconductor Corp. All rights reserved. Package Reference Top View BST AGND CS MODE REF RTN FB EN PGOOD VCC PGND PGND PGND PGND PGND PGND PGND PGND VIN SW VIN QFN-21 (3x4mm)

Reed Semiconductor Corp. All rights reserved. Part Number and Order Information Part Number VREF Package MSL Shipping Method Package Marking RS53419LR 0.5V QFN-21 Level-1 5000u Tape & Reel R3419L RS53419HR 0.6V 5000u Tape & Reel R3419H Top Marking RSYYWW PPPPPP LLLLLS Line 1

  • RS: Prefix of Reed Semiconductor (RS is replaced by RE for engineering lot)
  • YY: Year code
  • WW: Week code Line 2
  • PPPPPP: Truncated part number Line 3
  • LLLLL: Lot code
  • S: Assembly site code

Reed Semiconductor Corp. All rights reserved. Pin Description Pin Number Name Description

1 BST

Bootstrap connection. A capacitor connected between SW and BST is required to form a floating supply across the high-side switch driver. Use 0.1uF to 1uF value for boot capacitor. 2 AGND Signal logic ground. A Kelvin connection to PGND is required. 3 CS Current limit setting. Connect a resistor to AGND to set the inductor valley current limit trip point. 4 MODE Operation mode selection. Connect a resistor to AGND to set switching frequency and DCM/FCCM operation. 5 REF Connect a capacitor to PGND to set soft start time. 6 RTN Output remote sense return. 7 FB Output remote sense feedback. Use the external resistor divider from the output to AGND tapped to FB to set output voltage. Place the resistor divider close to FB in layout. 8 EN Enable pin. Drive EN high to initiate VCC internal LDO and soft start. Do not float this pin. 9 PGOOD Power good output with open drain. 10, 21 VIN Supply voltage. Input to the power stage and internal LDO. Place input capacitor close to VIN pin in layout. 11~18 PGND System Ground. Power ground of the power stage. 19 VCC Internal LDO output. Use 1uF or larger value for VCC capacitor. Place VCC capacitor close to VCC pin in layout. 20 SW Switch node of power stage. Use a wide copper plane to connect SW pin to inductor.

Reed Semiconductor Corp. All rights reserved. PACKAGE DIMENSION TOP VIEW BOTTOM VIEW SIDE VIEW

Reed Semiconductor Corp. All rights reserved. RECOMMENDED LAND PATTERN

Reed Semiconductor Corp. All rights reserved. TAPE AND REEL INFORMATION PKG type (mm) Reel Diameter (mm) Reel Width W1(mm) A0(mm) B0(mm) K0(mm) P1(mm) W(mm) Quad Note: All the data is nominal A0 Pocket width B0 Pocket length K0 Pocket thickness W1 Reel Width W Inner width of the carrier tape P1 Pitch between pocket centers Pocket thickness W1 Reel Width W Inner width of the carrier tape P1 Pitch between pocket centers

Reed Semiconductor Corp. All rights reserved. PIZZA BOX DIMENSION PKG type (mm) Units/box Length(mm) Width(mm) Height(mm) 3x4 5000 355 340 50 Note: All the data is nominal