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PS12 반도체 회로 부품 판매점

Quad Power Sequencing Controller



Supertex 로고
Supertex
PS12 데이터시트, 핀배열, 회로
www.DataSheet4U.com
PS12
Quad Power Sequencing Controller
Features
Power supply sequencer with four outputs
Power-up and power-down sequencing
Six programmable delays
Maximum 90V supply voltage
Input voltage window comparator
Low power supply current (500µA typical)
16-Lead SOIC Package
Applications
Reduction of transient current demand and
protection of sensitive loads
Telecom and networking systems
High voltage MEMS and display driver supplies
Typical Application Circuit
+12V
General Description
Many systems require that their power supplies are enabled
and disabled sequentially in order to reduce transient current
demand on the power bus, or to avoid damage to components
having multiple supply voltages such as microprocessors,
ASICs, MEMS drivers, etc.
The PS12 incorporates a power-up delay timer, a window
voltage comparator, 4 open drain enable outputs, and 6
enable delay timers. The enable delays are individually
programmable for both the power-up (ABCD) and the power-
down (DCBA) sequence.
Power-up and power-down are controlled by a window
comparator formed by the ON and OV voltage comparators.
VIN voltage within the window initiates power-up; VIN voltage
outside of the window maintains or initiates power-down. The
power-up sequence may be interrupted while in progress. The
power-down sequence, once initiated, cannot be interrupted
until it is brought to completion.
R1
3
ON
R2
4
OV
R3
2
CPUD
PUD
TAB
5
15
VIN
1
VEE
PS12NG
TBC
6
TCD
7
TDC
8
TCB
9
11
PSA
12
PSB
13
PSC
PSD
TBA
14
10
RAB
RBC
RCD
RDC
RCB
RBA
ENA
+12V
CONVERTER
ENA
+5V
CONVERTER
ENA
+3.3V
CONVERTER
ENA
+1.8V
CONVERTER
OUT
OUT
OUT
OUT


PS12 데이터시트, 핀배열, 회로
PS12
Ordering Information
Device
Package Option
16-Lead SOIC
PS12
PS12NG-G
-G indicates package is RoHS compliant (‘Green’)
Absolute Maximum Ratings
Parameter
Value
VIN1
-0.3V...+100V
PSA...PSD1
-0.3V...+100V
ON, OV1
-0.3V...+8V
ESD (all pins except VIN, PSA...PSD)2
±2kV
Operating ambient temperature
-40OC...+85OC
Operating junction temperature
-40OC...+125OC
Storage temperature
-65OC...+150OC
Absolute Maximum Ratings are those values beyond which damage to the device may
occur. Functional operation under these conditions is not implied. Continuous operation
of the device at the absolute rating level may affect device reliability. All voltages are
referenced to device ground.
Notes:
1. Referenced to VEE
2. HBM, 1.5kΩ, 100pF
Thermal Resistance
Package
16-Lead SOIC
θja
65K/W to 120K/W
(PCB Layout dependent)
Pin Configuration
VEE 1
PUD 2
ON 3
OV 4
TAB 5
TBC 6
TCD 7
TDC 8
16 NC
15 VIN
14 PSD
13 PSC
12 PSB
11 PSA
10 TBA
9 TCB
16-Lead SOIC
(top view)
Pin Configuration
Top Marking
PS12NG
YWW LLLLLLLL
Bottom Marking
CCCCCCCCC AAA
Y = Last Digit of Year Sealed
WW = Week Sealed
L = Lot Number
C = Country of Origin
A = Assembler ID*
= “Green” Packaging
*May be part of top marking
Block Diagram
PS12
ON
PU 1.20V
PD 1.00V
OV
PD 1.20V
PU 1.00V
VIN
INTERNAL
VOLTAGE REGULATOR
CONTROL
LOGIC
PSA
PSB
PSC
PSD
12 µA
1.20 V
PUD
CPUD
VEE
TAB TBC TCD TDC TCB TBA
RAB RBC RCD RDC RCB RBA
2




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제조업체: Supertex

( supertex )

PS12 controller

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