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Pin Descriptions
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PI2211
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Pin Name
BUS
VCC
UV/EN
OV
CSP
CSN
DRN
SRC
GDR
PWRGD
GND
SEL
RACC
TIMER
SOAS
SOAR
SOAT
-
TAB
Pin
Number
7
6
20
19
8
10
9
12
11
21
13, 14, 15
16
24
23
22
4
3
1, 2, 5, 17,
18
TAB
Description
Bus input power.
Positive supply input. Derived internally from BUS for voltages > 4.5Vdc, externally from VAUX for
lower BUS voltages.
BUS voltage sense for under-voltage fault. An enable or disable for the controller.
BUS voltage sense for over-voltage fault.
Current sense positive location input.
Current sense negative location input.
MOSFET drain sense .
MOSFET source sense.
MOSFET gate drive.
Power good indicator.
Controller ground reference.
Programming option for SOA programming with external resistors.
Internal current programming resistor.
Programmable delay timer to inhibit the start of the controller.
SOA current programming resistor.
SOA thermal programming resistor.
SOA transient response programming resistor.
No connects, pins are to be left floating.
No electrical connection; receiving footprint is required to achieve a R θ J-A of 46°C/W. Can be
electrically connected to PI2211 GND only.
Ordering Information
Part Number
PI2211-00-QAIG
Description
24 lead QFN package
Picor Corporation · picorpower.com
PI2211
Rev 1.0, Page 2 of 26
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