RH3080MK DICE/DWF
Adjustable 0.9A Single
Resistor Low Dropout
Regulator
Features
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DescriPtion
The RH3080 is a 0.9A low dropout linear regulator with a
unique architecture featuring a precision current source
and voltage follower which allows the output to be pro-
grammed to any voltage between zero and 36V. Multiple
regulators can be paralleled to increase total output current
and spread heat over a system PC board with no need for
heat sinking. The pass transistor collector can be brought
out independently of the circuit supply voltage to allow
dropout voltage to approach the saturation limit of the pass
transistor. A 2.2µF capacitor on the output with an ESR of
less than 0.5Ω is adequate to ensure stability. Applications
with large output load transients require a larger output
capacitor value to minimize output voltage change. Input
circuitry ensures output safe operating area current limit-
ing and thermal shutdown protection. The rated output
current of an RH3080-based part is fixed by internal wire
length/resistance. Linear Technology dice element evalu-
ations are based on parts rated for 0.9A output current.
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Outputs May Be Paralleled for Higher Current and
Heat Spreading
Single Resistor Sets Output Voltage
Output Adjustable to 0V
10µA SET Pin Current: 1% Initial Accuracy
Total Ionizing Dose (TID) Tolerance, per TM1019.8,
MIL-STD-883 up to:
200kRad (Si), per Condition A, at 50Rads(Si)/sec
100kRad (Si), per Condition D, at 10mRads(Si)/sec
ELDRS Pass 100kRad(Si)
Displacement Damage Defects (DDD) Up to 1E12
Neutrons/cm
2
Single Event Latchup (SEL) Threshold Linear Energy
Transfer (LET) ≥110MeV.cm
2
/mg at T
CASE
= 100°C
MIL-PRF-38535 Class V Compliant
Dice Pinout
PAD FUNCTION
2
1
absolute MaxiMuM ratings
(Note 1) (All voltages relative to V
OUT
)
1.
2.
3.
4.
5.
IN
OUT
SENSE
SET
V
CONTROL
2
1
DIE CROSS REFERENCE
5
3
LTC
®
Finished
Part Number
Order
Part Number
V
CONTROL
Pin Voltage ....................................40V, –0.3V
IN Pin Voltage ................................................40V, –0.3V
SET Pin Current (Note 6) ..................................... ±10mA
SET Pin Voltage (Relative to OUT, Note 6) .............±0.3V
Output Short-Circuit Duration .......................... Indefinite
Operating Junction Temperature Range
(Notes 2, 10) .......................................... –55°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
4
RH3080MK RH3080MK DICE
RH3080MK RH3080MK DWF*
Please refer to
LT
®
3080
standard product
data sheet for other applicable product
information.
*DWF = DICE in wafer form.
44mils x 75mils
Backside metal: Alloyed gold layer
Backside potential: OUT
Tie SENSE to OUT
rh3080mkfb
1
RH3080MK DICE/DWF
table 1. Dice/DWF electrical test liMits
PARAMETER
SET Pin Current (Note 6)
Output Offset Voltage (V
OUT
– V
SET
)
Load Regulation, I
SET
Load Regulation, V
OS
Line Regulation, I
SET
Line Regulation, V
OS
Minimum Load Current (Note 3)
V
CONTROL
Dropout Voltage (Note 4)
V
IN
Dropout Voltage (Note 4)
V
CONTROL
Pin Current (Note 5)
CONDITIONS
V
IN
= 1V, V
CONTROL
= 2V, I
LOAD
= 1mA
V
IN
= 1V, V
CONTROL
= 2V, I
LOAD
= 1mA
I
LOAD
= 1mA to 100mA
I
LOAD
= 1mA to 100mA
V
IN
= 1V to 26V, V
CONTROL
= 2V to 26V, I
LOAD
= 1mA
V
IN
= 1V to 26V, V
CONTROL
= 2V to 26V, I
LOAD
= 1mA
V
IN
= 10V, V
CONTROL
= 10V
V
IN
= 26V, V
CONTROL
= 26V
V
IN
= 1V, I
LOAD
= 0.1A
V
CONTROL
= 2V, I
LOAD
= 0.1A
V
IN
= 1V, V
CONTROL
= 2V, I
LOAD
= 0.1A
T
A
= 25°C (Notes 2, 5, 8, 9, 12)
MIN
9.9
–5
–15
–1.0
–0.45
–0.05
MAX
10.1
5
15
1.0
0.45
0.05
0.4
0.9
1.4
0.17
5.3
UNITS
µA
mV
nA
mV
nA/V
mV/V
mA
mA
V
V
mA
table 2. electrical characteristics
PARAMETER
SET Pin Current (Note 6)
Output Offset Voltage (V
OUT
– V
SET
)
Load Regulation, I
SET
Load Regulation, V
OS
Line Regulation, I
SET
(Note 11)
Line Regulation, V
OS
(Note 11)
Minimum Load Current (Notes 3, 11)
V
CONTROL
Dropout Voltage (Note 4)
V
IN
Dropout Voltage (Note 4)
V
CONTROL
Pin Current (Note 5)
Current Limit
Error Amplifier RMS Output Noise
(Note 7)
Reference Current RMS Output Noise
(Note 7)
CONDITIONS
V
IN
= 1V, V
CONTROL
= 2V, I
LOAD
= 1mA
V
IN
= 1V, V
CONTROL
= 2V, I
LOAD
= 1mA
I
LOAD
= 1mA to 0.9A
I
LOAD
= 1mA to 0.9A
V
IN
= 1V to 26V, V
CONTROL
= 2V to 26V,
I
LOAD
= 1mA
V
IN
= 1V to 26V, V
CONTROL
= 2V to 26V,
I
LOAD
= 1mA
V
IN
= 10V, V
CONTROL
= 10V
V
IN
= 26V, V
CONTROL
= 26V
V
IN
= 1V, I
LOAD
= 0.1A
V
IN
= 1V, I
LOAD
= 0.5A
V
IN
= 1V, I
LOAD
= 0.9A
V
CONTROL
= 2V, I
LOAD
= 0.1A
V
CONTROL
= 2V, I
LOAD
= 0.5A
V
CONTROL
= 2V, I
LOAD
= 0.8A
V
IN
= 1V, V
CONTROL
= 2V, I
LOAD
= 0.1A
V
IN
= 1V, V
CONTROL
= 2V, I
LOAD
= 0.9A
V
IN
= 5V, V
CONTROL
= 5V, V
SET
= 0V,
V
OUT
= –0.1V
I
LOAD
= 0.9A, 10Hz ≤ f ≤100kHz, C
OUT
= 10µF,
C
SET
= 0.1µF
10Hz ≤ f ≤100kHz
(Preirradiation) (Notes 2, 9, 12)
T
A
= 25°C
MIN
9.9
–5
–15
–1.0
–0.45
–0.05
MAX
10.1
5
15
1.0
0.45
0.05
0.4
0.9
1.4
1.5
1.5
0.17
0.27
0.45
5.3
22
0.9
TYP = 40
TYP = 1
SUB- –55°C < T
A
< 125°C SUB-
GROUP
MIN
MAX GROUP
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0.9
9.8
–6
–30
–1.5
–0.6
–0.06
10.2
6
30
1.5
0.6
0.06
0.6
1
1.5
1.7
0.2
0.6
6.3
30
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
UNITS
µA
mV
nA
mV
nA/V
mV/V
mA
mA
V
V
V
V
V
V
mA
mA
A
µV
RMS
nA
RMS
rh3080mkfb
2
RH3080MK DICE/DWF
table 3. electrical characteristics
PARAMETER
Output Offset Voltage
(V
OUT
– V
SET
)
Load Regulation, I
SET
Load Regulation, V
OS
Line Regulation, I
SET
Line Regulation, V
OS
Minimum Load Current
(Note 3)
V
CONTROL
Dropout
Voltage (Note 4)
V
IN
Dropout Voltage
(Note 4)
CONTROL Pin Current
(Note 5)
Current Limit
Error Amplifier RMS
Output Noise (Note 7)
Reference Current RMS
Output Noise (Note 7)
CONDITIONS
V
IN
= 1V, V
CONTROL
= 2V, I
LOAD
= 1mA
I
LOAD
= 1mA to 0.9A
I
LOAD
= 1mA to 0.9A
V
IN
= 1V to 26V, V
CONTROL
= 2V to 26V,
I
LOAD
= 1mA
V
IN
= 1V to 26V, V
CONTROL
= 2V to 26V,
I
LOAD
= 1mA
V
IN
= 10V, V
CONTROL
= 10V
V
IN
= 26V, V
CONTROL
= 26V
V
IN
= 1V, I
LOAD
= 0.1A
V
IN
= 1V, I
LOAD
= 0.9A
V
CONTROL
= 2V, I
LOAD
= 0.1A
V
CONTROL
= 2V, I
LOAD
= 0.8A
V
IN
= 1V, V
CONTROL
= 2V, I
LOAD
= 0.1A
V
IN
= 1V, V
CONTROL
= 2V, I
LOAD
= 0.9A
V
IN
= 5V, V
CONTROL
= 5V, V
SET
= 0V,
V
OUT
= –0.1V
I
LOAD
= 0.9A, 10Hz ≤ f ≤100kHz,
C
OUT
= 10µF, C
SET
= 0.1µF
10Hz ≤ f ≤100kHz
0.9
TYP = 40
TYP = 1
SET Pin Current (Note 6) V
IN
= 1V, V
CONTROL
= 2V, I
LOAD
= 1mA
9.8
–8
–15
–0.8
10.2
8
15
0.8
(Postirradiation) (Notes 2, 9, 12)
10KRads(Si) 20KRads(Si) 50KRads(Si) 100KRads(Si) 200KRads(Si)
MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX UNITS
9.8
–8
–15
–1.3
–0.8
10.2
8
15
1.3
0.8
9.8
–8
–25
–0.9
–0.1
10.3
8
25
0.9
0.1
0.4
0.9
1.55
1.55
0.23
0.53
5.3
22
0.9
TYP = 40
TYP = 1
0.9
TYP = 40
TYP = 1
9.8
–9
–25
–1.4
–0.9
–0.15
10.4
9
25
1.4
0.9
0.15
0.4
0.9
1.6
1.6
0.25
0.55
5.3
22
0.9
TYP = 40
TYP = 1
9.8
–10
–25
–1.5
–1
–0.2
10.5
10
25
1.5
1
0.2
0.4
0.9
1.65
1.65
0.3
0.6
5.3
22
µA
mV
nA
mV
nA/V
mV/V
mA
mA
V
V
V
V
mA
mA
A
µV
RMS
nA
RMS
–1.25 1.25
–1.35 1.35
–0.06 0.06 –0.08 0.08
0.4
0.9
1.5
1.5
0.2
0.5
5.3
22
0.9
TYP = 40
TYP = 1
0.4
0.9
1.5
1.5
0.21
0.51
5.3
22
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
Unless otherwise specified, all voltages are with respect to V
OUT
.
The RH3080MK DICE is tested and specified under pulse load conditions
such that T
J
≈ T
A
.
Note 3:
Minimum load current is equivalent to the quiescent current of
the part. Since all quiescent and drive current is delivered to the output
of the part, the minimum load current is the minimum current required to
maintain regulation.
Note 4:
Dropout results from either of minimum control voltage,
V
CONTROL
, or minimum input voltage, V
IN
, both specified with respect
to V
OUT
. These specifications represent the minimum input-to-output
differential voltage required to maintain regulation.
Note 5:
The V
CONTROL
pin current is the drive current required for the
output transistor. This current tracks output current with roughly a 1:60
ratio. The minimum value is equal to the quiescent current of the device.
Note 6:
SET pin is clamped to the output with diodes. These devices only
carry current under transient overloads.
Note 7:
Adding a small capacitor across the reference current resistor
lowers output noise. Adding this capacitor bypasses the resistor shot
noise and reference current noise; output noise is then equal to error
amplifier noise (see LT3080 data sheet and Application Note AN83).
Note 8:
Dice are probe tested at 25°C to the limits shown in Table 1.
Except for high current tests, dice are tested under low current conditions
which assure full load current specifications when assembled.
Note 9: Dice that are not qualified by Linear Technology with a can
sample are guaranteed to meet specifications of Table 1 only. Dice
qualified by Linear Technology with a can sample meet specifications
in all tables.
Note 10:
This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature exceeds the maximum operating junction temperature when
overtemperature protection is active. Continuous operation above the
specified maximum operating junction temperature may impair device
reliability.
Note 11:
Current limit may decrease to zero at input-to-output differential
voltages (V
IN
– V
OUT
) greater than 26V. Operation at voltages for both IN
and V
CONTROL
is allowed up to a maximum of 36V as long as the difference
between input and output voltage is below the specified differential (V
IN
– V
OUT
) voltage. Line and load regulation specifications are not applicable
when the device is in current limit.
Note 12:
Please refer to LT3080 standard product data sheet for Typical
Performance Characteristics, Pin Functions, Applications Information and
Typical Applications.
rh3080mkfb
3
RH3080MK DICE/DWF
table 4. Post burn-in enDPoints anD Delta liMit
requireMents
T
A
= 25°C
PARAMETER
SET Pin Current (Note 6)
CONDITIONS
V
IN
= 1V, V
CONTROL
= 2V, I
LOAD
= 1mA
ENDPOINT LIMITS
MIN
MAX
9.9
10.2
DELTA LIMITS
MIN
MAX
–0.1
0.1
UNITS
µA
table 5. electrical test requireMents
MIL-STD-883 TEST REQUIREMENTS
Final Electrical Test Requirements (Method 5004)
Group A Test Requirements (Method 5005)
Group B and D for Class S,
End Point Electrical Parameters (Method 5005)
*PDA applies to subgroup 1. See PDA Test Notes.
SUBGROUP
1*, 2, 3
1, 2, 3
1, 2, 3
PDA Test Notes
The PDA is specified as 5% based on failures from Group A, Subgroup 1,
tests after cooldown as the final electrical test in accordance with method
5004 of MIL-STD-883. The verified failures of Group A, Subgroup 1, after
burn-in divided by the total number of devices submitted for burn-in in that
lot shall be used to determine the percent for the lot.
Linear Technology Corporation reserves the right to test to tighter limits
than those given.
total Dose bias circuit
3V
4
C
IN
1µF
3
IN
OUT
CASE
1
NC
C
OUT
10µF
R
LOAD
499
V
CONTROL
SET
2
R
SET
49.9k
burn-in circuit
V
A
4
2
3
5
1
499
TO-3 4-LEAD
1. NC
2. SET
3. V
CONTROL
4. IN
5. OUT = CASE
+
+
10µF
16V
TANT
1µF
100V
TANT
3
2
4
5
1
49.9k
V
C
BOTTOM VIEW
V
A
= V5 = 38V TO 40V
V
C
= GROUND
T
A
= 125°C
T
JMAX
= 135°C
THERMAL SHUTDOWN = 160 ±10°C
DUT CURRENT = 1mA
rh3080mkfb
4
RH3080MK DICE/DWF
tyPical PerForMance characteristics
SET Pin Current
10.20
10.15
SET PIN CURRENT (µA)
OFFSET VOLTAGE (mV)
10.10
10.05
10.00
9.95
9.90
9.85
9.80
0
100
50
150
TOTAL DOSE (KRADS)
200
RH3080 G01
Offset Voltage (V
OUT
-V
SET
)
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
0
100
50
150
TOTAL DOSE (KRADS)
200
RH3080 G02
Minimum Load Current
0.8
MINIMUM LOAD CURRENT (mA)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
100
50
150
TOTAL DOSE (KRADS)
200
RH3080 G03
I
L
= 1mA
V
IN,CONTROL
– V
OUT
= 26V
V
IN,CONTROL
– V
OUT
= 10V
Dropout Voltage (Minimum
V
CONTROL
Pin Voltage)
1.6
1.4
MINIMUM CONTROL VOLTAGE
(V
CONTROL
– V
OUT
) (V)
1.2
1.0
0.8
0.6
0.4
0.2
0
0
100
50
150
TOTAL DOSE (KRADS)
200
RH3080 G04
Dropout Voltage
(Minimum IN Voltage)
200
MINIMUM IN VOLTAGE (V
IN
– V
OUT
) (mV)
175
150
125
100
75
50
25
0
0
100
50
150
TOTAL DOSE (KRADS)
200
RH3080 G05
Current Limit
2.0
CHANGE IN CURRENT LIMIT (%)
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
0
100
50
150
TOTAL DOSE (KRADS)
200
RH3080 G06
I
L
= 100mA
I
L
= 100mA
rh3080mkfb
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
5
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