RH1084 [Linear]
5A Low Dropout Positive Adjustable Regulator; 5A低压差正可调稳压器
| 型号： | RH1084 |
| 厂家： | 
Linear |
| 描述： | 5A Low Dropout Positive Adjustable Regulator |
| 文件： | 总4页 (文件大小：62K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
RH1084
5A Low Dropout
Positive Adjustable Regulator
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DESCRIPTIO
AB OLU E AXI U RAT GS
S T
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The RH1084 positive adjustable regulator is designed to
provide 5A with higher efficiency than currently available
devices. All internal circuitry is designed to operate down
to 1V input-to-output differential and the dropout voltage
is fully specified as a function of load current. Dropout is
guaranteed at a maximum of 1.5V at maximum output
current, decreasing at lower load currents. On-chip trim-
mingadjuststheoutputvoltageto1%.Currentlimitisalso
trimmed, minimizing the stress on both the regulator and
power source circuitry under overload conditions.
Power Dissipation.............................. Internally Limited
Input-to-Output Voltage Differential......................... 25V
Operating Junction Temperature Range
Control Section ............................. – 55°C to 150°C
Power Transistor ............................ – 55°C to 200°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
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PRECONDITIONI G
The RH1084 is pin compatible with older 3-terminal regu-
lators. A 10μF output capacitor is required on these new
device. However, thisisusuallyincludedinmostregulator
designs.
100% Thermal Limit Burn-In
, LTC and LT are registered trademarks of Linear Technology Corporation.
The wafer lots are processed to Linear Technology
Corporation’s in-house Class S flow-to-yield circuits
usable in stringent military applications.
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PACKAGE I FOR ATIO
BUR -I CIRCUIT
BOTTOM VIEW
RH1084
IN
OUT
12.5V
ADJ
121Ω
V
ADJ
IN
1k
CASE
IS OUTPUT
–12.5V
2
1
CAPACITOR(S) NOT SHOWN
RH1084 BI
K PACKAGE
2-LEAD TO-3 METAL CAN
Note: For ordering information contact LTC.
1
RH1084
(Preirradiation)
TABLE 1: ELECTRICAL CHARACTERISTICS
–55°C ≤ TJ ≤ 150°C
T = 25
°
C
SUB-
SUB-
GROUP
J
PARAMETER
CONDITIONS
= 10mA, (V – V ) = 3V
NOTES MIN TYP MAX GROUP
MIN TYP MAX
UNITS
Reference Voltage
I
1.238 1.250 1.262
1
V
V
OUT
IN
OUT
10mA ≤ I
≤ I
,
FULL LOAD
1.5V ≤ (V – V ) ≤ 25V
5
1.225
1.270
1.225 1.250 1.270
2,3
OUT
IN
OUT
Line Regulation
Load Regulation
I
= 10mA, 1.5V ≤ (V – V ) ≤ 15V
1,2
0.015 0.2
0.5
1
1
0.035 0.2
0.050 0.5
2,3
2,3
%
%
LOAD
IN
OUT
15V ≤ (V – V ) ≤ 25V
IN
OUT
(V – V ) = 3V,
10mA ≤ I
1,2,5
3,5
0.1
0.3
1
0.2
0.4
2,3
%
IN
OUT
≤ I
OUT
FULL LOAD
Dropout Voltage
Current Limit
ΔV = 1%, I
= I
OUT FULL LOAD
1.5
1
1.3
1.5
2,3
V
REF
(V – V ) = 5V
(V – V ) = 25V
5.5
0.3
1
1
5.5
0.3
6.5
0.6
2,3
2,3
A
A
IN
OUT
IN
OUT
Minimum Load Current
Thermal Regulation
Ripple Rejection
(V – V ) = 25V
10
1
4
4
5.0
10
2,3
mA
%/W
dB
IN
OUT
T = 25°C, 30ms Pulse
A
0.003 0.015
75
f = 120Hz, C
= 25μF,
5
60
60
75
5,6
ADJ
C
= 25μF Tantalum,
= I
OUT
OUT
I
, (V – V ) = 3V
FULL LOAD
IN
OUT
Adjust Pin Current
T = 25°C
55
120
5
1
1
120
5
2,3
2,3
μA
μA
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Adjust Pin Current
Change
10mA ≤ I
≤ I
OUT
,
5
4
0.2
OUT
FULL LOAD
1.5V ≤ (V – V ) ≤ 25V
IN
Temperature Stability
Long Term Stability
RMS Output Noise
0.5
0.3
%
%
%
T = 125°C, 1000 Hrs
A
T = 25°C, 10Hz ≤ f ≤ 10kHz
A
0.003
(% of V
)
OUT
Thermal Resistance
Control Circuitry
Power Transistor
4
4
0.75
2.3
°C/W
°C/W
Total Dose Bias Circuit
12.5V
RH1084
V
OUT
ADJ
150Ω
RH1084 BC
–12.5V
2
RH1084
TABLE 1A: ELECTRICAL CHARACTERISTICS (Postirradiation) TA = 25°C unless otherwise noted.
20KRAD(Si)
MIN MAX
1.23
50KRAD(Si)
MIN MAX MIN
100KRAD(Si)
MAX
200KRAD(Si)
MIN MAX UNITS
10KRAD(Si)
PARAMETER
CONDITIONS
= 10mA (V – V ) = 3V
MIN
MAX
Reference Voltage (Note 5)
I
1.234
1.210
1.258
1.257 1.225
1.275 1.215
1.253 1.22
1.275 1.210
1.247 1.205
1.275 1.203
1.241
1.275
V
V
OUT
IN
OUT
10mA ≤ I
≤ I
FULL LOAD
1.275 1.219
OUT
1.5V ≤ (V – V ) ≤ 15V
IN
OUT
Line Regulation (Notes 1, 2)
I
= 10mA
OUT
1.5V ≤ (V – V ) ≤ 15V
0.2
0.5
0.21
0.5
0.23
0.5
0.25
0.5
0.3
0.5
%
%
IN
OUT
15V ≤ (V – V ) ≤ 25V
IN
OUT
Load Regulation (Notes 1, 2, 5) (V – V ) = 3V
0.3
0.3
0.3
0.35
0.4
%
IN
OUT
10mA ≤ I
≤ I
FULL LOAD
OUT
Dropout Voltage (Note 3)
Current Limit
ΔV = 1%, I
= FULLLOAD
OUT
1.5
1.55
1.65
1.8
2.0
V
REF
(V – V
) = 5V
5.5
0.3
5.5
0.3
5.4
0.3
5.25
0.3
5.0
0.3
A
A
IN
OUT
OUT
(V – V
IN
) = 25V
Minimum Load Current
Adjust Pin Current
(V – V
) = 25V
10
120
5
10
120
5
10
120
5
10
120
5
10
120
5
mA
μA
μA
IN
OUT
Adjust Pin Current Change
(Note 5)
10mA ≤ I
1.5V ≤ (V – V ) ≤ 15V
≤ I
OUT FULL LOAD
IN
OUT
Note 1: See thermal regulation specifications for changes in output voltage
due to heating effects. Line and load regulation are measured at a constant
junction temperature by low duty cycle pulse testing.
Note 3: Dropout voltage is specified over the full output current range of
the device. Test points and limits are shown on the Dropout Voltage curve
in the LT®1084 data sheet.
Note 2: Line and load regulation are guaranteed up to the maximum power
dissipation of 45W for RH1084. Power dissipation is determined by the
input/output differential voltage and the output current. Guaranteed
maximum power dissipation will not be available over the full input/output
voltage range.
Note 4: Guaranteed by design, characterization, or correlation to other
tested parameters.
Note 5: I
is defined in the Current Limit curves in the standard
FULL LOAD
data sheet. For compliance with 883 revision C current density
specifications, the RH1084 is rated to 3A.
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TABLE 2: ELECTRICAL TEST REQUIRE E TS
PDA Test Notes
MIL-STD-883 TEST REQUIREMENTS
SUBGROUP
1*,2,3,4,5,6
1,2,3,4,5,6
1
The PDA is specified as 5% based on failures from group A, subgroup 1,
tests after cooldown in accordance with method 5004 of MIL-STD-883
Class B. 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 defective for the lot.
Linear Technology Corporation reserves the right to test to tighter limits
than those given.
Final Electrical Test Requirements (Method 5004)
Group A Test Requirements (Method 5005)
Group C and D End Point Electrical Parameters
(Method 5005)
* PDA Applies to subgroup 1. See PDA Test Notes.
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 represen-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
3
RH1084
TYPICAL PERFORMANCE CHARACTERISTICS
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Reference Voltage
Ripple Rejection
Current Limit
1.26
1.25
1.24
1.23
1.22
105
100
95
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
10mA ≤ Δ ≤ I
≤ I
OUT
(V – V ) = 3V
(V – V ) = 5V
OUT
IN
OUT
FULL LOAD
OUT
IN
1.5V ≤ (V – V ) ≤ 15V
I
= I
OUT FULL LOAD
IN
90
85
80
75
70
65
1
10
100
1000
1
10
100
1000
1
10
100
1000
TOTAL DOSE – KRADS (Si)
TOTAL DOSE – KRADS (Si)
TOTAL DOSE – KRADS (Si)
RH1084 G01
RH1084 G02
RH1084 G03
Current Limit
Line Regulation
Load Regulation
0.10
0.05
0
0.9
0.8
0.7
0.6
0.5
0.3
0.2
0.1
0
(V – V ) = 3V
(V – V ) = 25V
OUT
IN
1.5V ≤ (V – V ) ≤ 15V
OUT
IN
OUT
IN
10mA ≤I
≤ 5A
I
= 10mA
OUT
OUT
–0.05
–0.10
–0.1
1
10
100
1000
1
10
100
1000
1
10
100
1000
TOTAL DOSE – KRADS (Si)
TOTAL DOSE – KRADS (Si)
TOTAL DOSE – KRADS (Si)
RH1084 G06
RH1084 G04
RH1084 G05
Dropout Voltage
Adjust Pin Current
Minimum Load Current
1.8
1.6
1.4
1.2
1.0
80
70
60
50
40
4
3
2
1
0
I
= 5A
(V – V ) = 3V
(V – V ) = 25V
OUT
IN
OUT
L
IN
OUT
10mA ≤ I ≤ I
FULL LOAD
1
10
100
1000
1
10
100
1000
1
10
100
1000
TOTAL DOSE – KRADS (Si)
TOTAL DOSE – KRADS (Si)
TOTAL DOSE – KRADS (Si)
RH1084 G07
RH1084 G08
RH1084 G09
I.D. No. 66-11-1084
LT/LT 0705 REV C PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
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●
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© LINEAR TECHNOLOGY CORPORATION 1996
(408) 432-1900 FAX: (408) 434-0507
www.linear.com
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