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Электронный компонент: IL2931

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IL2931 SERIES
1
LOW DROPOUT VOLTAGE REGULATORS
The LM2931 series consists of positive fixed and
adjust-
able output voltage regulators that are specifically designed to maintain
proper regulation with an extremely low input-to-output voltage
differential. These devices are capable of supplying output currents in
excess of 100 mA and feature a low bias current of 0.4 mA at 10 mA
output.
Designed primarily to survive in the harsh automotive
environment, these devices will protect all external load circuitry from
battery jump starts, and excessive line transients during load dump.
This series also includes internal current limiting, thermal shutdown,
and additionally, is able to withstand temporary power-up with mirror-
image insertion.
Due to the low dropout voltage and bias current specifications,
the LM2931 series is ideally suited for battery powered industrial and
consumer equipment where an extension of useful battery life is
desirable. The `C' suffix adjustable output regulators feature an output
inhibit pin which is extremely useful in microprocessor-based systems.
Input-to-Output Voltage Differential of Less Then 0.6 V at 100mA
Output Current in Excess of 100 mA
Low Bias Current
60 V Load Dump Protection
-50 V Reverse Transient Protection
Internal Current Limiting with Thermal Shutdown
Temporary Mirror-Image Protection
Ideally Suited for Battery Powered Equipment
Ordering Information
Maximum Ratings
Rating Symbol
Value
Unit
Input Voltage Continuos
Vin
40
Vdc
Transient Input Voltage (r
100 ms)
Vin(r) 60 Vpk
Transient Reverse Polarity Input Voltage
1,0% Duty Cycle, r
100 ms
-Vin(r) -50 Vpk
Power Dissipation Case TO-220AA (TO-92)
TA = +25
C
Thermal Resistance Junction to Ambient
Thermal Resistance Junction to Case
PD
R
JA
R
JC
Internally Limited
178
83
Watts
C/W
C/W
Power Dissipation Case TO-220AB
TA = +25
C
Thermal Resistance Junction to Ambient
Thermal Resistance Junction to Case
PD
R
JC
R
JC
Internally Limited
65
5.0
Watts
C/W
C/W
Tested Operating Junction Temperature Range
TJ
-40 to +125
C
Storage Temperature Range
Tstg
-65 to +150
C
TO-226AA /
TO-92
Pin 1. Output
2.Ground
3.Input
Pin 1. Input
2. Ground
3. Output
(Heatsink
surface connected
to Pin 2.)
TO-220 AB
o
**
100F
in
*
0.1F
Vout
Vin
IL2931
Standard application
Output
Package
Case
Device Voltage
Tolerance
Number
Il2931-5
5.0 V
+5%
TO-226AA/TO92, TO-220AB
Il2931-9
9.0 V
+5%
TO-226AA/TO92, TO-220AB
IL2931 SERIES
2
IL2931-5
Electrical characteristics
(Vin = 14V, Io = 10mA, Co = 100
F, Co(ESR) = 0.3 , TJ = +25 C Note 1, unless otherwise noted)
Characteristic
Symbol
Min
Typ
Max
Unit
Fixed Output
Output Voltage
V
in
= 14 V, Io = 10 mA, T
J
= 25
C
V
in
= 6.0 to 26 V, I
o
100mA, T
J
= -40 to 125
C
V
o
4.75
4.5
5.0
-
5.25
5.5
Vcd
Line Regulation
V
in
= 9.0 V to 16 V
V
in
= 6.0 V to 26 V
Reg
line
-
-
2.0
4.0
10
30
mV
Load Regulation(Io = 5.0 mA to 100 m A)
Reg
load
- 14 50 mV
Output Impedance
I
o
= 10 mA,
I
o
= 1.0 mA, f = 100 Hz to 10 kHz
Zo - 200 - m
Bias Current
V
in
= 14 V, I
o
= 100 mA, TJ = 25
C
V
in
= 6.0 V to 26 V, I
o
= 10 mA, T
J
= -40 to +125
C
I
B
-
-
5.8
0.4
30
1.0
mA
Output Noise Voltage (f = 10 Hz to 100 rHzZ)
V
n
- 700 -
Vrms
Long -Term Stability
S
-
20
-
mV/kHz
Ripple Rejection (f = 120 Hz)
RR
60
90
-
dB
Dropout Voltage
Io=10A
Io=100A
V
in
-V
o
-
0.015
0.06
0.2
0.6
V
Over -Voltage Shutdown Threshold
V
th(ov)
26 29.5 40 V
Output Voltage with Reverse Polarity Input
(Vin = -15 V)
-V
o
-0.3 0 - V
IL2931-9
Electrical characteristics
(Vin = 16V, Io = 10 mA)
Characteristic
Symbol
Min
Typ
Max
Unit
Fixed Output
Output Voltage
V
in
= 16 V, I
o
= 10 mA, TJ = 25
C
V
in
=10 to 26 V, I
o
100mA, T
J
= -40 to +125
C
V
o
8.55
8.1
9.0
-
9.45
9.9
Vcd
Line Regulation
V
in
= 9.0 V to 16 V
V
in
= 6.0 V to 26 V
Reg
line
-
-
4.0
8.0
20
60
mV
Load Regulation(Io = 5.0 mA to 100 m A)
Reg
load
- 30 100 mV
Output Impedance
I
o
= 10 mA,
I
o
= 1.0 mA, f = 100 Hz to 10 kHz
Z
o
- 200 - m
Bias Current
V
in
= 14 V, I
o
= 100 mA, T
J
= 25
C
V
in
= 6.0 V to 26 V, I
o
= 10 mA, T
J
= -40 to +125
C
I
B
-
-
5.8
0.4
30
1.0
mA
Output Noise Voltage (f = 10 Hz to 100 rHzZ)
V
n
- 700 -
Vrms
Long -Term Stability
S
-
20
-
mV/kHz
Ripple Rejection (f = 120 Hz)
RR
60
90
-
dB
Dropout Voltage
Io=10A
Io=100A
V
in
-V
o
-
0.015
0.06
0.2
0.6
V
Over - Voltage Shutdown Threshold
V
th(ov)
26 29.5 40 V
Output Voltage with Reverse Polarity Input
(V
in
= -15 V)
-V
o
-0.3 0 - V

Note
:
1. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambied as possible.