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ST1S03

Features: 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 50-100s TYPICAL EFFICIENCY: > 70% OVER ALL OPERATING CONDITIONS 1.5A OUTPUT CURRENT CAPABILITY NOT SWITCHING QUIESCENT CURRENT...

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SeekIC No. : 004506335 Detail

ST1S03: Features: 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 50-100s TYPICAL EFFICIENCY: &...

ST1S03 Data Sheet

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Part Number:
ST1S03
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

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 50-100s
TYPICAL EFFICIENCY: > 70% OVER ALL OPERATING CONDITIONS
1.5A OUTPUT CURRENT CAPABILITY
NOT SWITCHING QUIESCENT CURRENT: MAX 2.5mA OVER TEMPERATURE RANGE
SWITCH VDS: MAX 350mV @ISW=750mA
USES TINY CAPACITORS AND INDUCTORS
 AVAILABLE IN DFN 3x3 EXPOSED PAD


Pinout

Connection Diagram


Specifications

Symbol
Parameter
Value
Unit
VI_SW
 Positive Power Supply Voltage
-0.3 to 16
V
VI_SW
 Positive Power Supply Voltage
-0.3 to 16
V
SWITCH
Voltage
 Max Voltage of output pin
-0.3 to 16
V
VFB
 Feedback Voltage
2.5
V
IVFB
 Common mode input voltage
±1
mA
TJ
 Max Junction Temperature
150
°C
TSTG
 Storage Temperature Range
-25 to 150
°C
TLEAD
 Lead Temperature (Soldering) 10 Sec.
300
°C
Absolute Maximum Ratings are those beyond which damage to the device may occur. Functional operation under these condition is not implied.


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 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.




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