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Document Number: 73578

S09-1456-Rev. B, 03-Aug-09

Vishay Siliconix

SiP12502

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

IC is working in normal operation.

power switch, to allow higher maximum output currents and

higher converter efficiency.

source for the IC.

PGOOD (Pin 4)

PGOOD is the open-drain output pin of the power good

higher than 90 % of its regulation voltage, PGOOD will go

high. Its hysteresis is 2 %.

GND (Pin 5)

GND is the ground pin for signal and power ground.

LX (Pin 6)

LX is 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

2

3

6

5

4

1

PowerPAK MLP33-6

Top View

XSHD

GND

LX

PGOOD

ORDERING INFORMATION

Part Number

Voltage Output

Temperature Range

Marking

SiP12502DMP-20-E3

2.0 V

- 40 °C to 85 °C

502A

SiP12502DMP-33-E3

3.3 V

502E

SiP12502DMP-50-E3

5.0 V

502G

PIN DESCRIPTION

Pin Number

Name

Function

1

XSDH

Logic controlled shutdown input, XSHD = high: normal operation, XSHD = low: shutdown

2

Input voltage

3

Output of the boost converter and power source for the IC battery

4

PGOOD

Power good comparator output

5

GND

Signal and power ground

6

LX

Switch pin