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ST1S03

1.5A, 1.5 MHZ ADJUSTABLE,

STEP-DOWN SWITCHING REGULATOR IN DFN6

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STEP-DOWN CURRENT MODE PWM

(1.5MHz) DC-DC CONVERTER

2% DC OUTPUT VOLTAGE TOLERANCE

INTERNAL SOFT START FOR START-UP

CURRENT LIMITIATION AND POWER ON

DELAY OF 50-100碌s

TYPICAL EFFICIENCY: > 70% OVER ALL

OPERATING CONDITIONS

1.5A OUTPUT CURRENT CAPABILITY

NOT SWITCHING QUIESCENT CURRENT:

MAX 2.5mA OVER TEMPERATURE RANGE

SWITCH V

DS

: MAX 350mV @ISW=750mA

USES TINY CAPACITORS AND INDUCTORS

AVAILABLE IN DFN 3x3 EXPOSED PAD

DFN6 (3x3)

DESCRIPTION

The ST1S03 is a step down DC-DC converter

optimized for powering low-voltage digital core in

HDD applications and, generally, to replace the

high current linear solution when the power

dissipation may cause an high heating of the

application environment. It provides up to 1.5A

over an input voltage range of 3V to 16V. An high

Figure 1: Schematic Diagram

switching frequency (1.5MHz) allows the use of

tiny surface-mount components: as well as the

resistor divider to set the output voltage value,

only an inductor, a schottky diode and two

capacitors are required. Besides, a low output

ripple is guaranteed by the current mode PWM

topology and by the use of low E.S.R. SMD

ceramic capacitors. The device is thermal

protected and current limited to prevent damages

due to accidental short circuit. The ST1S03 is

available in DFN6 package.

March 2005

Rev. 3

1/11

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ST1S03PM相關(guān)型號(hào)PDF文件下載

• 型號(hào)
  版本
  描述
  廠商
  下載
• ST1S03
  英文版
  1.5A, 1.5 MHZ ADJUSTABLE, STEP-DOWN SWITCHING REGULATOR IN D...
  
  ST1S03
• ST1S03
  英文版
  1.5A, 1.5 MHZ ADJUSTABLE, STEP-DOWN SWITCHING REGULATOR IN D...
  STMICROELECTRON...
  ST1S03
• ST1S06
  英文版
  Synchronous rectification with inhibit, 1.5A, 1.5 MHz fixed ...
  
  ST1S06
• ST1S09
  英文版
  2A, 1.5 MHz PWM step-down switching regulator with synchrono...
  
  ST1S09
• ST1S10
  英文版
  3 A, 900 kHz, monolithic synchronous step-down regulator
  
  ST1S10
• ST1S03A
  英文版
  1.5A, 1.5 MHz Adjustable, with inhibit function Step-down sw...
  
  ST1S03A
• ST1S06A
  英文版
  Synchronous rectification with inhibit, 1.5 A, 1.5 MHz fixed...
  
  ST1S06A
• ST1S03PM
  英文版
  1.5A, 1.5 MHZ ADJUSTABLE, STEP-DOWN SWITCHING REGULATOR IN D...
  
  ST1S03PM
• ST1S03PM
  英文版
  1.5A, 1.5 MHZ ADJUSTABLE, STEP-DOWN SWITCHING REGULATOR IN D...
  STMICROELECTRON...
  ST1S03PM
• ST1S03PU
  英文版
  1.5A, 1.5 MHz adjustable, step-down switching regulator in D...
  
  ST1S03PU
• ST1S06PM
  英文版
  Synchronous rectification with inhibit, 1.5A, 1.5 MHz fixed ...
  
  ST1S06PM
• ST1S06PU
  英文版
  Synchronous rectification with inhibit, 1.5A, 1.5 MHz fixed ...
  
  ST1S06PU
• ST1S06XX
  英文版
  Synchronous rectification with inhibit, 1.5 A, 1.5 MHz fixed...
  
  ST1S06XX
• ST1S09PU
  英文版
  2A, 1.5 MHz PWM step-down switching regulator with synchrono...
  
  ST1S09PU
• ST1S12GR
  英文版
  Synchronous rectification with enable, 0.7 A, 1.7 MHz fixed ...
  
  ST1S12GR
• ST1S12GR
  英文版
  Buck Switching Regulator IC Positive Adjustable 0.6V 1 Outpu...
  ST1S12GR
• ST1S12XX
  英文版
  Synchronous rectification with enable, 0.7 A, 1.7 MHz fixed ...
  
  ST1S12XX
• ST1S03_07
  英文版
  1.5A, 1.5 MHz adjustable, step-down switching regulator in D...
  
  ST1S03_07
• ST1S03_08
  英文版
  1.5 A, 1.5 MHz adjustable, step-down switching regulator
  
  ST1S03_08
• ST1S03PMR
  英文版
  暫無描述
  
  ST1S03PMR

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