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기능 Radiation Hardended Ultra Low Dropout Fixed Positive Linear Regulator
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IRUH330118AK 데이터시트, 핀배열, 회로
www.DataSheet4U.com
PD-97530A
IRUH330118AK
Radiation Hardended Ultra Low Dropout
IRUH330118AP
Fixed Positive Linear Regulator
+3.3VIN to +1.8VOUT @3.0A
Product Summary
Part Number
IO
VIN VOUT
IRUH330118AK
IRUH330118AP
3.0A
3.3V
1.8V
8-LEAD FLAT PACK
Description
The IRUH330118 is a space qualified, ultra low dropout
linear regulator designed specifically for applications
requiring high reliability, low noise and radiation hardness.
Absolute Maximum Ratings
Features
n Silicon On Insulator (SOI) CMOS Regulator
IC, CMOS Latch-Up Immune,
Inherently Rad Hard
n Total Dose Capability up to 300Krads(Si)
(Condition A); Tested to 500Krad (Si)
n ELDRS up to 100Krad(Si) (Condition D)
n SEU Immune up to LET = 80 MeV*cm2/mg
n Space Level Screened
n Fast Transient Response
n Timed Latch-Off Over-Current Protection
n Internal Thermal Protection
n On/Off Control via Shutdown Pin, Power
Sequencing Easily Implemented
n Isolated Hermetic 8-Lead Flat Pack
Ensures Higher Reliability
n This part is also available in MO-078 Package
as IRUH330118BK / IRUH330118BP
Parameter
Symbol
Min.
Max.
Units
Power Dissipation @ TC = 125°C
Maximum Output Current @ Maximum
Power Dissipation with no Derating
PD - 25 W
IO
-
See Fig 4
A
Non-Operating Input Voltage
Operating Input Voltage
Ground
Shutdown Pin Voltage
Output Pin Voltage
Operating Case Temperature Range
Storage Temperature Range
Maximmum Junction Temperature
Lead Temperature (Soldering 10sec)
Pass Transistor Thermal Resistance, Junction to Case
VIN
VIN
GND
VSHDN
VOUT
TO
TS
TJ
TL
RTHJC
-0.3 +8.0
2.9 6.4
-0.3 0.3 V
-0.3 VIN + 0.3
-0.3 VIN + 0.3
-55 +140
-65 +150
-
+150
°C
- +300
- 1.0 °C/W
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1
08/02/10




IRUH330118AK pdf, 반도체, 판매, 대치품
IRUH330118AK
IRUH330118AP
Application Information
Input
Voltage
0.1uF and 1uF
Ceramic;
Two 100uF
Low ESR
Tantalum
VIN VOUT
IRUH3301xxxx VSENSE
SHDN
GND
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Output
Voltage
0.1uF and 1uF
Ceramic;
Two 100uF
Low ESR
Tantalum
Fig. 1. Typical Regulator Circuit; Note the SHDN Pin is hardwired in the “ON” position.
The VSENSE Pin is connected as noted in the “General Layout Rules” section.
Over-Current & Over-Temperature Protection
The IRUH3301 series provides over-current protection by means of a timed latch function. Drive
current to the internal PNP pass transistor is limited by an internal resistor (Rb in Fig. 3) between
the base of the transistor and the control IC drive FET. If an over-current condition forces the
voltage across this resistor to exceed 0.5V (nom), the latch feature will be triggered. The time-to-
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10ms. If the over-current
is set the drive current to
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latch will remain set until one of the following actions occur:
1. The SHDN Pin voltage is brought above 1.2V and then lowered below 0.8V.
2. The VIN Pin voltage is lowered below 1.7V.
If the junction temperature of the regulator IC exceeds 140°C nominal, the thermal shutdown circuit
will set the internal latch and disable the drive current to the PNP pass transistor as described
above. After the junction temperature falls below a nominal 125°C, the latch can be reset using
either of the actions described above.
Under-Voltage Lock-Out
The under-voltage lock-out (UVLO) function prevents operation when VIN is less than 1.7V
(nominal). There is a nominal 100mV hysteresis about this point.
Input Voltage Range
The device functions fully when VIN is greater than 2.8V. It enters into under-voltage lock-out at VIN
< 1.7V (nominal). When 1.7V (nominal) < VIN < 2.8V, VOUT will track VIN and overshoot may occur.
A larger output capacitor should be used to slow down the VOUT rise rate for slow VIN ramp
applications.
Shutdown (SHDN)
The regulator can be shutdown by applying a voltage of >1.2V to the SHDN Pin. The regulator will
restart when the SHDN Pin is pulled below the shutdown threshold of 0.8V. If the remote shutdown
feature is not required, the SHDN Pin should be connected to GND.
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IRUH330118AK 전자부품, 판매, 대치품
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IRUH330118AK
IRUH330118AP
VOut
0.500%
0.250%
0.000%
-0.250%
-0.500%
1
10 100 1000 10000 100000
Total Dose (Rad (Si))
ELDRS
TID
Fig. 5. Change in Output Voltage vs. Total Ionizing Dose Radiation Exposure at Both High and Low Dose Rates
105
95
85
75
65
55
45
35
25
15
5
-5
0.1
PSRR (Typical)
1
10
100
1000
10000
Freq (KHz)
Recomended Setup without Part
Iout=100mA & 1.6A, 1.8Vout, 3.3Vin
Fig. 6. Typical Power Supply Ripple Rejection at 100mA and 1.6A using recommended layout
and capacitors. Results above 10KHz are influenced by testing setup and layout.
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IRUH330118AK

Radiation Hardended Ultra Low Dropout Fixed Positive Linear Regulator

International Rectifier
International Rectifier
IRUH330118AP

Radiation Hardended Ultra Low Dropout Fixed Positive Linear Regulator

International Rectifier
International Rectifier

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