LATCH -UP CURRENT LIMITER
0.8V TO 5.5V INPUT - UP TO 2A
F A S T S W I T C H - O F F T I M E , 2 A D J U S TA B L E T H R E S H O L D S
R A D I AT I O N H A R D E N E D D E S I G N
3DPM0168-2
K E Y F E AT U R E S
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Latch-up protection from 0.8V to 5.5V and up to 2A
Very fast switch-off time (10µs max)
Very low Voltage drop across the LCL
Adjustable Run & Standby threshold currents
Active threshold current selection via an external signal
Automatic reconnection or through ON/OFF command
Adjustable delay for automatic reconnection
Protection Status signal for system supervision
Space Qualified Technology
Radiation Hardened design
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TID > 50 krad(Si)
SEL LET > 80MeV.cm2/mg
SET Immune > 80MeV.cm2/mg
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Temperature Range -40°C / +115°C
Compact Size and Low Weight
20-pin SOP pitch 1.27mm
ITAR Free Product - Worldwide delivery guaranty
Size: 15 x 15 x 12 mm
Mass: 6.5 g
PRODUCT OVERVIEW
Advanced high performance semiconductor devices can be sensitive to Single Event Latch-Up (SEL)
effects when exposed to radiation in a space environment. Even though SEL is a very rare event, it can
lead to device destruction and therefore must be mitigated to ensure the reliability and success of the
mission. Therefore, mission critical space applications that may be susceptible to SEL, should include
protection devices such as a Latch-Up current Limiter (LCL).
The 3DPM0168-2 LCL Module monitors the power
supply line of radiation sensitive devices and switches
them off instantaneously in case of “radiation induced
SEL” or high-current events in order to protect the
device from over current and overheating.
The LCL Module offers two adjustable threshold
currents: to control device Run & Standby currents and
two operating modes: Automatic reconnection with
adjustable delay or reconnection through ON/OFF
command.
Featuring specific radiation effect mitigation techniques
and utilizing space design derating rules, the
3DPM0168-2 Latch-up Current Limiter is an ITAR Free
product and features a SEL/SEE LETth of 80
MeV.cm2/mg and a TID of 50krad (Si).
The LCL is the best solution for power lines protection for advanced high performance electronics such
as ASICs, FPGAs (Actel, Xilinx,…) and memory banks in space applications: science and deep space
missions, Earth observation, navigation, launchers and manned space vehicles.
RELIAB LE M INIATURIZATI O N TECHNOLOGI E S FOR ELECTRONIC S
PIN DESCRIPTION
PIN
DESCRIPTION
Vin
Input voltage used to power the LCL output load
Vout
Protected voltage provided to the sensitive load
GND
Ground pin
ON/OFF
External command to switch ON (high level) or OFF (low level) the LCL
Prot_Status
Digital signal which reflects the current LCL status (Low=LCL not tripped, High=LCL tripped)
Run/Stb
External command to select the RUN protection current (high level) or the STANDBY protection current (low level)
Vaux
Auxiliary supply used to power the internal control circuit. Minimum Vaux voltage is 3.3V. When above 5.5V,
a serial resistance must be inserted in series with Vaux pin. Can be connected to Vin when Vin is between 3.3V and 5.5V
Lim_Run
Used to adjust the RUN protection level. Adjustment performed by connecting an external resistor between the pin and Lim_Stb pin
Lim_Stb
Used to adjust the STANDBY protection level. Adjustment performed by connecting an external resistor between this pin and
ground
Adj_Restart
Used to adjust the automatic reconnection delay. Adjustment performed by connecting an external capacitor between
this pin and ground. Use a short to inhibit the automatic reconnection mode
PRODUCT PERFORMANCES
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
VOLTAGE & CURRENT
Input Voltage
Vin
Output Current
Iout
Voltage drop @ 1A
Vdrop
Capacitive load
Cload
Auxiliary Supply
Vaux
TEMPERATURE RANGES
0.8
95
3.2
5.5
V
2000
mA
C : Commercial (0°C to 70°C)
110
mV
I : Industrial (-40°C to +85°C)
10
µF
S : Specific (-40°C to +115°C)
5.5
V
COMMANDS
ON Voltage threshold (Vaux=3.3V)
Von
OFF Voltage threshold (Vaux=3.3V)
Voff
Hysteresis (Vaux=3.3V)
Hys
2.32
0.53
V
1.05
V
0.96
V
QUALITY GRADES
N : Commercial
B : Industrial
VOLTAGE & CURRENT
S : Space
Standby threshold Current
Ith1
100
Ith2
mA
Run threshold Current
Ith2
Ith1
2000
mA
Delay for automatic reconnection
Tdelay
0.5
300
ms
Current threshold accuracy (Ith=1A)
Iacc
-8
8
%
Timing delay accuracy
Tacc
-25
25
%
Swith ON time (dV/dT)
SwonT
Swith OFF time
SwonT
3
16
mV/µs
10
µs
ORDERING INFORMATION
Quality Grade
Options
Part Number – X X – X00X
Temperature Range
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