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SIP12503DMP-T1-E3 Datasheet(PDF) 4 Page - Vishay Siliconix

Part # SIP12503DMP-T1-E3
Description  500-mA - Adjustable Boost Converter for Single or Dual Cell
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Manufacturer  VISHAY [Vishay Siliconix]
Direct Link  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

SIP12503DMP-T1-E3 Datasheet(HTML) 4 Page - Vishay Siliconix

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Document Number: 73579
S09-1454-Rev. B, 03-Aug-09
Vishay Siliconix
SiP12503
PIN CONFIGURATION AND TRUTH TABLE
PIN FUNCTIONS
XSHD (Pin 1)
XSHD is a logic-level shutdown control pin. When XSHD is
low, the IC’s switching is disabled, and an antiringing switch
is connected between LX and VIN. When XSHD is high, the
IC is working in normal operation.
VIN (Pin 2)
VIN is the pin connected to battery input voltage. At start-up,
SiP12503 is powered from the voltage at the VIN pin. Once
VOUT exceeds VIN, the SiP12503 is powered from VOUT.
This increases the drive to the gate of the internal power
switch, to allow higher maximum output currents and higher
converter efficiency.
VOUT (Pin 3)
VOUT is the output of the boost converter and also the power
source for the IC.
FB (Pin 4)
FB is the output voltage feedback pin via an external resistor
divider. The feedback voltage is nominally 0.6 V.
GND (Pin 5)
GND is the ground pin for signal and power ground.
LX (Pin 6)
LX connects to the drain of the internal power MOSFET
(boost switch). Externally, the LX pin should be connected to
the boost inductor and Schottky diode. If the inductor current
falls to zero, or XSHD is low, an internal antiringing switch is
short from LX to VIN to minimize EMI.
2
3
6
5
4
1
PowerPAK MLP33-6
Top View
FB
GND
LX
VOUT
VIN
XSHD
ORDERING INFORMATION
Part Number
Temperature Range
Marking
SiP12503DMP-T1-E3
- 40 °C to 85 °C
2503
PIN DESCRIPTION
Pin Number
Name
Function
1
XSDH
Logic controlled shutdown Input, XSHD = high: normal operation, XSHD = low: shutdown
2
VIN
Input voltage
3
VOUT
Output of the boost converter and power source for the IC-battery
4
FB
Output voltage feedback pin
5
GND
Signal and power ground
6
LX
Switch pin


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