IK Semicon ILE4260-2 5-v low-drop voltage regulator Datasheet

TECHNICAL DATA
5-V Low-Drop Voltage Regulator
ILE 4260 is a 5-V low-drop fixed-voltage regulator in
P-TO220-5 package. The maximum input voltage is 42 V
(65 V≤ 400 ms). The device can produce an output current of
more than 500 mA. It is shortcircuit-proof and incorporates
temperature protection that disables the circuit at unpermissibly
high temperatures.
Due to the wide temperature range of – 40 to 150 °C, the
ILE 4260 is also suitable for use in automotive applications.
The IC regulates an input voltage VI in the range
6 < VI < 35 V to VQnominal =5.0 V. A reset signal is generated
for an output voltage of VQ < 4.75 V. The reset delay can be set
externally with a capacitor. If the output current is reduced below
10 mA, the regulator switches internally to standby and the reset
generator is turned off.
The standby current drops to max. 700 µA.
ILE4260-2
ILE4260S-2
ILE4260-2
I L E 4260S-2
I L E 4260-2
P-TO220-5-2
P-TO220-5-1
TA = -40° ÷ 125° C for all
packages
Features
• Low-drop voltage
• Very low quiescent current
• Low starting current consumption
• Integrated temperature protection
• Protection against reverse polarity
• Input voltage up to 42 V
• Overvoltage protection up to 65 V (≤ 400 ms)
• Short-circuit proof
• Suited for automotive electronics
• Wide temperature range
January, 2011, Rev. 01
ILE4260-2
Pin Configuration
(top view)
Pin Definitions and Functions (ILE 4260 and ILE 4260 S)
Pin No.
1
Symbol
VI
2
QVRES
3
4
5
GND
DRES
VQ
Function
Input; block directly to ground at the IC by a 470-nF capacitor
Reset output; open collector output controlled by the reset
delay
Ground
Reset delay; wired to ground with a capacitor
5-V output voltage; block to ground with a 22-µF capacitor
January, 2011, Rev. 01
ILE4260-2
Circuit Description
The control amplifier compares a reference voltage, which is kept highly accurate
by resistance adjustment, to a voltage that is proportional to the output voltage and
drives the base of the series transistor via a buffer. Saturation control as a function of
the load current prevents any over-saturation of the power element. If the output
voltage goes below 96% of its typical value, an external capacitor is discharged on pin
4 by the reset generator. If the voltage on the capacitor reaches the lower threshold
VST, a reset signal is issued on pin 2 and not cancelled again until the upper threshold
VDT is exceeded. For an output current of less than IQN Off = 10 mA the standby
changeover turns off the reset generator. The latter is turned on again when the output
current increases, the output voltage drops below 4.2 V or the delay capacitor is
discharged by external measures.
The IC also incorporates a number of internal circuits for protection against:
• Overload
• Overvoltage
• Overtemperature
• Reverse polarity
Block Diagram
January, 2011, Rev. 01
ILE4260-2
Absolute Maximum Ratings
Parameter
Input (Pin 1)
Input voltage
Limit Values
min
max
Symbol
Unit
Remarks
– 42
–
42
65
V
V
t ≤ 400 ms
–
1.6
A
–
–0.3
42
V
–
–
–
–
internally limited
IGND
–0.5
–
A
–
VD
ID
– 0.3
42
V
–
–
–
–
internally limited
– 5.25
VI
V
–
Current
VI – VQ
IQ
–
1.4
A
–
Temperature
Storage temperature
Tstg
– 50
150
°C
–
–
32
V
1)
– 40
165
°C
–
–
65
K/W
–
–
3
K/W
–
Input current
VI
VI
II
Reset Output (Pin 2)
Voltage
VR
Current
IR
Ground (Pin 3)
Current
Reset Delay (Pin 4)
Voltage
Current
Output (Pin 5)
Differential voltage
Operating Range
Input voltage
VI
Junction temperature Tj
Thermal Resistances
Junction ambient
Rthja
Junction case
Rthjc
1)
–
See diagram “Output Current versus Input Voltage”
* Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device.
These are stress ratings only and functional operation of the device at these or any other conditions beyond those
indicated under “recommended operating conditions” is not implied.
Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
January, 2011, Rev. 01
ILE4260-2
Characteristics
VI = 13.5 V; Tj = 25 °C; (unless otherwise specified)
Limit Values
Parameter
Symbol
min.
typ.
max.
Unit
Test Condition
Normal Operation
Output voltage
VQ
4.75
5.0
5.25
V
25 mA ≤ IQ ≤ 500 mA
6 V ≤ VI ≤ 28 V
– 40 °C ≤ Tj ≤ 125 °C
Short -circuit current
ISC
500
1000
–
mA
VI =17 V to 28 V;
VQ = 0 V
Current consumption
Iq = II – IQ
Iq
–
8.5
10
mA1)
6 V ≤ VI ≤ 28 V
IQ = 150 mA
Current consumption
Iq = II – IQ
Iq
–
50
65
mA1)
6 V ≤ VI ≤ 28 V
IQ = 500 mA
Current consumption
Iq = II – IQ
Iq
–
–
80
mA1)
VI ≤ 6 V IQ = 500 mA
Drop voltage
VDR
–
0.35
0.5
V
VI = 4.5 V; IQ = 0.5 A
Drop voltage
VDR
–
0.2
0.3
V
VI = 4.5 V; IQ = 0.15 A
Load regulation
∆VQ
–
15
35
mV
25mA≤ IQ ≤ 500 mA
Supply-voltage
regulation
∆VQ
–
15
50
mV
VI ≤ 6 V to 28 V;
IQ = 100 mA
Supply-voltage
regulation
∆VQ
–
5
25
mV
VI ≤ 6 V to 16 V;
IQ = 100 mA
Ripple rejection
SVR
–
54
–
dB
f = 100 Hz;
Vr = 0.5 Vpp
Temperature drift of
output voltage1)
αVQ
–
2× 10–4
–
1/°C
Quiscent current;
Iq = II – IQ
Iq
–
500
700
µA
10V ≤ VI ≤ 16 V;
IQ = 0mA
Quiscent current;
Iq = II – IQ
Iq
–
750
850
µA
10V ≤ VI ≤ 16 V;
IQ = 5mA
–
Standby Operation
January, 2011, Rev. 01
ILE4260-2
Characteristics (cont’d)
VI = 13.5 V; Tj = 25 °C; (unless otherwise specified)
Limit Values
Parameter
Symbol
min.
typ.
Unit
max.
Test Condition
Standby Off/Normal On
Current consumption
IqSOFF
–
1.0
1.2
mA
see test diagram
Current consumption
IqNON
–
1.7
2.2
mA
see test diagram
Current consumption
IqNOFF
–
1.55
2.00
mA
see test diagram
Current consumption
IqSON
–
850
1050
µA
see test diagram
Switching threshold
IQNOFF
7.5
10
12.5
mA
see test diagram
Switching hysteresis
∆IQ
2.25
3
4
mA
see test diagram
Reset Generator
Switching threshold
VRT
94
96
97
%
in % of VQ;
Normal Off/Standby On
IQ > 500mA;VI = 6 V
Saturation voltage
VR
–
0.25
0.40
V
IR = 3 mA;VI = 4.5 V
Reverse current
IR
–
–
1
µA
VR = 5 V
Charge current
ID
7
10
13
µA
–
Switching threshold
VST
0.9
1.1
1.3
V
–
Delay switching threshold
VDT
2.15
2.50
2.75
V
–
Delay time
tD
–
25
–
ms
CD = 100 nF
Delay time
tt
–
5
–
µs
CD = 100 nF
General Data
Turn-Off voltage
VIOFF
40
43
45
V
IQ < 1 mA
Turn-Off hysteresis
∆VI
–
3.0
–
V
–
Leakage current
IQS
–
500
–
µA
VQ = 0 V; VI = 45 V
Reverse output current
IQR
–
–
1.5
mA
VQ = 5 V; VI = open
1) See
diagram
January, 2011, Rev. 01
ILE4260-2
Application Circuit
Time Responce
January, 2011, Rev. 01
ILE4260-2
Time Response in Standby Condition
January, 2011, Rev. 01
ILE4260-2
Package Dimensions
P-TO220-5-2
P-TO220-5-1
January, 2011, Rev. 01
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