IL33269
L
OW
D
ROPOUT
P
OSITIVE
F
IXED AND
A
DJUSTABLE
V
OLTAGE
R
EGULATORS
The IL33269 series are low dropout, medium current, fixed and
adjustable, positive voltage regulators specifically designed for
use in low input voltage applications. These devices offer the
circuit designer an economical solution for precision voltage
regulation, while keeping power losses to a minimum.
The regulator consists of a 1.0V dropout composite PNP-NPN
pass transistor, current limiting, and thermal shutdown.
TO-220 AB
Pin 1. Gnd/ Adj
2. Vin
3. Vout
(H eatsink
surface connected
to Pin 2.)
F
EATURES
• 3.3 V, 5.0 V, 12V and Adjustable Versions
•
1.0 V Dropout
• Output Current in Excess of 800 mA
• Thermal Protection
• Short Circuit Protection
• Output Trimmed to 1.0% Tolerance
• No Minimum Load Requirement for Fixed Voltage Output Devices
Device type/nominal output
voltage
IL33269-3.3
IL33269-5
IL33269-12
3.3 V
5V
12 V
MAXIMUM RATINGS
Rating
Power Supply input Voltage
Power Dissipation and Thermal Characteristics
T
A
= +25
°C
Thermal Resistance, Junction to Air
Thermal Resistance, Junction to Case
Operating Junction Temperature Range
Storage Temperature
Symbol
Vin
P
D
θ
JA
θ
JC
T
J
Tstg
-40 to +150
-55 to +150
Value
20
Unit
V
W
C/W
o
C/W
°C
°C
o
1
IL33269
ELECTRICAL CHARACTERISTICS (C
O
=
10 nF,TA=25°C, for min/max values T
J
=-40
o
C to+125
o
C,
unless otherwise noted.)
Characteristic
Output Voltage (Iout - 10 mA, T
J
= 25°C)
3.3 Suffix (Vcc=5.3V)
5.0 Suffix (Vcc=7V)
12 Suffix (Vcc=14V)
Output Voltage (Line, Load and Temperature)
(1.25 V
≤
Vjn - Vout
≤15
V, Iout = 500 mA)
(1.35 V
≤
Vin -Vout
≤10
V, Iout = 800 mA)
3.3 Suffix
5.0 Suffix
12 Suffix
Reference Voltage (Iout = 10 mA, Vjn-Vout = 2.0
V, T
J
= 25°C) Adjustable
Reference Voltage (Line, Load and Temperature)
(Note 1)
(1.25 V≤Vin- Vout
≤
15 V, Iout - 500 mA)
(1.35 V
≤
Vin -Vout≤£10 V, Iout - 600 mA)
Adjustable
Line Regulation
(Iout
=
10 mA, Vin = [Vout+1.5 V] to Vin=20 V, T
J
=
25
o
C)
Load Regulation (Vin=Vout+3.0V, Iout=10mA to
800 mA, T
J
=
25
o
C)
Dropout Voltage
(Iout = 500 mA)
(Iout
=
800 mA)
Ripple Rejection
(10 Vpp, 120 Hz Sinewave; Iout = 500 mA)
Current Limit (Vin - Vout = 10 V)
Quiescent Current (Fixed Output)
Minimum Required Load Current Fixed Output
Adjustable
Adjustment Pin Current
Symbol
VQ
Min
3.27
4.95
11.86
Vo
3.23
4.9
11.76
1.235
1.225
3.3
5.0
12
1.25
1.25
3.37
5.1
12.24
1.265
1.275
Typ
3.3
5.0
12
Max
3.33
5.05
12.12
V
Unit
V
Vrei
Vrel
V
V
Reg
line
Beg
load
Vin-Vout
RR
I
Limit
I
Q
I
Load
I
Adj
-
-
-
55
600
-
8.0
-
-
-
1.0
1.1
-
-
5.5
-
-
0.3
0.5
1.25
1.35
-
-
8.0
0
120
%
%
V
dB
mA
mA
mA
nA
2
